fix: add autocomplete defintion for log level

fixes #102

.github/workflows/qodana.yml

@@ -0,0 +1,23 @@
+name: Qodana
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+
+jobs:
+  qodana:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      pull-requests: write
+      checks: write
+    steps:
+      - uses: actions/checkout@v5
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}  # to check out the actual pull request commit, not the merge commit
+          fetch-depth: 0  # a full history is required for pull request analysis
+      - name: 'Qodana Scan'
+        uses: JetBrains/qodana-action@v2024.1
+        env:
+          QODANA_TOKEN: ${{ secrets.QODANA_TOKEN }}

.github/workflows/release.yml

@@ -19,15 +19,17 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           fetch-depth: 0 # this is important, otherwise it won't checkout the full tree (i.e. no previous tags)
       - uses: actions/setup-go@v5
         with:
-          go-version: 1.23
+          go-version: 1.25
           cache: true
-      - uses: sigstore/cosign-installer@v3.6.0         # installs cosign
-      - uses: anchore/sbom-action/download-syft@v0.17.2 # installs syft
+      - uses: sigstore/cosign-installer@v3.9.2         # installs cosign
+      - uses: anchore/sbom-action/download-syft@v0.20.5 # installs syft
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
       - uses: docker/login-action@v3                   # login to ghcr
         with:
           registry: ghcr.io

.github/workflows/test.yml

@@ -10,12 +10,12 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.23'
+          go-version: '1.25'
 
       - name: Install dependencies
         run: go mod tidy
@@ -28,9 +28,23 @@ jobs:
           mv go-junit-report /usr/local/bin/
 
       - name: Run tests
-        run: go test -v 2>&1 ./... -coverprofile=coverage.txt | go-junit-report -set-exit-code > junit.xml
+        run: |
+          set -o pipefail
+          go test -v 2>&1 ./... -coverprofile=coverage.txt | tee test-results.txt
+      - name: Analyse test results
+        if: ${{ !cancelled() }}
+        run: go-junit-report < test-results.txt > junit.xml
+      - name: Upload test result artifact
+        if: ${{ !cancelled() }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: test-results
+          path: | 
+            test-results.txt
+            junit.xml
+          retention-days: 7
       - name: Upload results to Codecov
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v5
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
       - name: Upload test results to Codecov

.gitignore

@@ -102,4 +102,5 @@ fabric.properties
 .idea/httpRequests
 
 # Android studio 3.1+ serialized cache file
-.idea/caches/build_file_checksums.ser
+.idea/caches/build_file_checksums.ser
+*__debug_bin*

.goreleaser.yml

@@ -9,9 +9,9 @@ changelog:
   sort: asc
   filters:
     exclude:
-      - '^docs:'
-      - '^test:'
-      - '^chore:'
+      - "^docs:"
+      - "^test:"
+      - "^chore:"
   groups:
     - title: Features
       regexp: '^.*?feat(\([[:word:]]+\))??!?:.+$'
@@ -24,19 +24,24 @@ changelog:
       order: 2
 builds:
   - id: cbzoptimizer
-    main: main.go
+    main: cmd/cbzoptimizer/main.go
     goos:
       - linux
+      - darwin
+      - windows
     goarch:
       - amd64
       - arm64
+    ignore:
+      - goos: windows
+        goarch: arm64
     # ensures mod timestamp to be the commit timestamp
     mod_timestamp: "{{ .CommitTimestamp }}"
     flags:
       # trims path
       - -trimpath
     ldflags:
-      - -s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X meta.date={{ .CommitDate }}
+      - -s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X main.date={{ .CommitDate }}
     env:
       - CGO_ENABLED=0
 # config the checksum filename
@@ -61,11 +66,25 @@ sboms:
 # https://goreleaser.com/customization/docker
 dockers:
   - image_templates:
-      - "ghcr.io/belphemur/cbzoptimizer:latest"
-      - "ghcr.io/belphemur/cbzoptimizer:{{ .Version }}"
-    dockerfile: Dockerfile
+      - "ghcr.io/belphemur/cbzoptimizer:latest-amd64"
+      - "ghcr.io/belphemur/cbzoptimizer:{{ .Version }}-amd64"
+    use: buildx
     build_flag_templates:
       - "--pull"
+      - "--platform=linux/amd64"
+      - "--label=org.opencontainers.image.created={{.Date}}"
+      - "--label=org.opencontainers.image.name={{.ProjectName}}"
+      - "--label=org.opencontainers.image.revision={{.FullCommit}}"
+      - "--label=org.opencontainers.image.version={{.Version}}"
+      - "--label=org.opencontainers.image.source={{.GitURL}}"
+  - image_templates:
+      - "ghcr.io/belphemur/cbzoptimizer:latest-arm64"
+      - "ghcr.io/belphemur/cbzoptimizer:{{ .Version }}-arm64"
+    use: buildx
+    goarch: arm64
+    build_flag_templates:
+      - "--pull"
+      - "--platform=linux/arm64"
       - "--label=org.opencontainers.image.created={{.Date}}"
       - "--label=org.opencontainers.image.name={{.ProjectName}}"
       - "--label=org.opencontainers.image.revision={{.FullCommit}}"
@@ -98,4 +117,13 @@ docker_signs:
     args:
       - "sign"
       - "${artifact}"
-      - "--yes" # needed on cosign 2.0.0+
+      - "--yes" # needed on cosign 2.0.0+
+docker_manifests:
+  - name_template: "ghcr.io/belphemur/cbzoptimizer:{{ .Version }}"
+    image_templates:
+      - "ghcr.io/belphemur/cbzoptimizer:{{ .Version }}-amd64"
+      - "ghcr.io/belphemur/cbzoptimizer:{{ .Version }}-arm64"
+  - name_template: "ghcr.io/belphemur/cbzoptimizer:latest"
+    image_templates:
+      - "ghcr.io/belphemur/cbzoptimizer:latest-amd64"
+      - "ghcr.io/belphemur/cbzoptimizer:latest-arm64"

.idea/inspectionProfiles/Project_Default.xml

@@ -0,0 +1,10 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="GoDfaErrorMayBeNotNil" enabled="true" level="WARNING" enabled_by_default="true">
+      <methods>
+        <method importPath="github.com/belphemur/CBZOptimizer/converter" receiver="Converter" name="ConvertChapter" />
+      </methods>
+    </inspection_tool>
+  </profile>
+</component>

.vscode/launch.json

@@ -0,0 +1,17 @@
+{
+  // Use IntelliSense to learn about possible attributes.
+  // Hover to view descriptions of existing attributes.
+  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Optimize Testdata",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/cmd/cbzoptimizer",
+      "args": ["optimize", "${workspaceFolder}/testdata", "-l", "debug"],
+      "cwd": "${workspaceFolder}"
+    }
+  ]
+}

Dockerfile

@@ -1,21 +1,29 @@
 FROM alpine:latest
 LABEL authors="Belphemur"
+ARG APP_PATH=/usr/local/bin/CBZOptimizer
 ENV USER=abc
 ENV CONFIG_FOLDER=/config
 ENV PUID=99
-RUN mkdir -p "${CONFIG_FOLDER}" && adduser \
-    --disabled-password \
-    --gecos "" \
-    --home "$(pwd)" \
-    --ingroup "users" \
-    --no-create-home \
-    --uid "${PUID}" \
-    "${USER}" && \
-    chown ${PUID}:${GUID} "${CONFIG_FOLDER}"
 
-COPY CBZOptimizer /usr/local/bin/CBZOptimizer
+RUN mkdir -p "${CONFIG_FOLDER}" && \
+    adduser \
+        -S \
+        -H \
+        -h "${CONFIG_FOLDER}" \
+        -G "users" \
+        -u "${PUID}" \
+        "${USER}" && \
+        chown ${PUID}:users "${CONFIG_FOLDER}"
 
-RUN apk add --no-cache inotify-tools && chmod +x /usr/local/bin/CBZOptimizer
+COPY CBZOptimizer ${APP_PATH}
 
+RUN apk add --no-cache \
+    inotify-tools \
+    bash \
+    bash-completion && \
+    chmod +x ${APP_PATH} && \
+    ${APP_PATH} completion bash > /etc/bash_completion.d/CBZOptimizer
+
+VOLUME ${CONFIG_FOLDER}
 USER ${USER}
 ENTRYPOINT ["/usr/local/bin/CBZOptimizer"]

README.md

@@ -1,62 +1,165 @@
 # CBZOptimizer
 
-CBZOptimizer is a Go-based tool designed to optimize CBZ (Comic Book Zip) files by converting images to a specified format and quality. This tool is useful for reducing the size of comic book archives while maintaining acceptable image quality.
+CBZOptimizer is a Go-based tool designed to optimize CBZ (Comic Book Zip) and CBR (Comic Book RAR) files by converting images to a specified format and quality. This tool is useful for reducing the size of comic book archives while maintaining acceptable image quality.
+
+**Note**: CBR files are supported as input but are always converted to CBZ format for output.
 
 ## Features
 
-- Convert images within CBZ files to different formats (e.g., WebP).
+- Convert images within CBZ and CBR files to different formats (e.g., WebP).
+- Support for multiple archive formats including CBZ and CBR (CBR files are converted to CBZ format).
 - Adjust the quality of the converted images.
 - Process multiple chapters in parallel.
-- Option to override the original CBZ files.
+- Option to override the original files (CBR files are converted to CBZ and original CBR is deleted).
+- Watch a folder for new CBZ/CBR files and optimize them automatically.
+- Set time limits for chapter conversion to avoid hanging on problematic files.
 
 ## Installation
 
-1. Clone the repository:
-   ```sh
-   git clone https://github.com/belphemur/CBZOptimizer.git
-   cd CBZOptimizer
-   ```
+### Download Binary
 
-2. Install dependencies:
-   ```sh
-   go mod tidy
-   ```
+Download the latest release from [GitHub Releases](https://github.com/belphemur/CBZOptimizer/releases).
+
+### Docker
+
+Pull the Docker image:
+
+```sh
+docker pull ghcr.io/belphemur/cbzoptimizer:latest
+```
 
 ## Usage
 
 ### Command Line Interface
 
-The tool provides a CLI command to optimize CBZ files. Below is an example of how to use it:
+The tool provides CLI commands to optimize and watch CBZ/CBR files. Below are examples of how to use them:
+
+#### Optimize Command
+
+Optimize all CBZ/CBR files in a folder recursively:
 
 ```sh
-go run main.go optimize --quality 85 --parallelism 2 --override /path/to/cbz/files
+cbzconverter optimize [folder] --quality 85 --parallelism 2 --override --format webp --split
+```
+
+With timeout to avoid hanging on problematic chapters:
+
+```sh
+cbzconverter optimize [folder] --timeout 10m --quality 85
+```
+
+Or with Docker:
+
+```sh
+docker run -v /path/to/comics:/comics ghcr.io/belphemur/cbzoptimizer:latest optimize /comics --quality 85 --parallelism 2 --override --format webp --split
+```
+
+#### Watch Command
+
+Watch a folder for new CBZ/CBR files and optimize them automatically:
+
+```sh
+cbzconverter watch [folder] --quality 85 --override --format webp --split
+```
+
+Or with Docker:
+
+```sh
+docker run -v /path/to/comics:/comics ghcr.io/belphemur/cbzoptimizer:latest watch /comics --quality 85 --override --format webp --split
 ```
 
 ### Flags
 
 - `--quality`, `-q`: Quality for conversion (0-100). Default is 85.
 - `--parallelism`, `-n`: Number of chapters to convert in parallel. Default is 2.
-- `--override`, `-o`: Override the original CBZ files. Default is false.
+- `--override`, `-o`: Override the original files. For CBZ files, overwrites the original. For CBR files, deletes the original CBR and creates a new CBZ. Default is false.
+- `--split`, `-s`: Split long pages into smaller chunks. Default is false.
+- `--format`, `-f`: Format to convert the images to (e.g., webp). Default is webp.
+- `--timeout`, `-t`: Maximum time allowed for converting a single chapter (e.g., 30s, 5m, 1h). 0 means no timeout. Default is 0.
+- `--log`, `-l`: Set log level; can be 'panic', 'fatal', 'error', 'warn', 'info', 'debug', or 'trace'. Default is info.
 
-## Testing
+## Logging
 
-To run the tests, use the following command:
+CBZOptimizer uses structured logging with [zerolog](https://github.com/rs/zerolog) for consistent and performant logging output.
+
+### Log Levels
+
+You can control the verbosity of logging using either command-line flags or environment variables:
+
+**Command Line:**
 
 ```sh
-go test ./... -v
+# Set log level to debug for detailed output
+cbzconverter --log debug optimize [folder]
+
+# Set log level to error for minimal output
+cbzconverter --log error optimize [folder]
 ```
 
-## GitHub Actions
+**Environment Variable:**
 
-The project includes a GitHub Actions workflow to run tests on every push and pull request to the `main` branch. The workflow is defined in `.github/workflows/go.yml`.
+```sh
+# Set log level via environment variable
+LOG_LEVEL=debug cbzconverter optimize [folder]
+```
 
-## Contributing
+**Docker:**
 
-1. Fork the repository.
-2. Create a new branch (`git checkout -b feature-branch`).
-3. Commit your changes (`git commit -am 'Add new feature'`).
-4. Push to the branch (`git push origin feature-branch`).
-5. Create a new Pull Request.
+```sh
+# Set log level via environment variable in Docker
+docker run -e LOG_LEVEL=debug -v /path/to/comics:/comics ghcr.io/belphemur/cbzoptimizer:latest optimize /comics
+```
+
+### Available Log Levels
+
+- `panic`: Logs panic level messages and above
+- `fatal`: Logs fatal level messages and above
+- `error`: Logs error level messages and above
+- `warn`: Logs warning level messages and above
+- `info`: Logs info level messages and above (default)
+- `debug`: Logs debug level messages and above
+- `trace`: Logs all messages including trace level
+
+### Examples
+
+```sh
+# Default info level logging
+cbzconverter optimize comics/
+
+# Debug level for troubleshooting
+cbzconverter --log debug optimize comics/
+
+# Quiet operation (only errors and above)
+cbzconverter --log error optimize comics/
+
+# Using environment variable
+LOG_LEVEL=warn cbzconverter optimize comics/
+
+# Docker with debug logging
+docker run -e LOG_LEVEL=debug -v /path/to/comics:/comics ghcr.io/belphemur/cbzoptimizer:latest optimize /comics
+```
+
+## Requirements
+
+- For Docker usage: No additional requirements needed
+- For binary usage: Needs `libwebp` installed on the system for WebP conversion
+
+## Docker Image
+
+The official Docker image is available at: `ghcr.io/belphemur/cbzoptimizer:latest`
+
+## Troubleshooting
+
+If you encounter issues:
+
+1. Use `--log debug` for detailed logging output
+2. Check that all required dependencies are installed
+3. Ensure proper file permissions for input/output directories
+4. For Docker usage, verify volume mounts are correct
+
+## Support
+
+For issues and questions, please use [GitHub Issues](https://github.com/belphemur/CBZOptimizer/issues).
 
 ## License
 

cbz/cbz_creator.go

@@ -1,90 +0,0 @@
-package cbz
-
-import (
-	"archive/zip"
-	"fmt"
-	"github.com/belphemur/CBZOptimizer/manga"
-	"os"
-	"time"
-)
-
-func WriteChapterToCBZ(chapter *manga.Chapter, outputFilePath string) error {
-	// Create a new ZIP file
-	zipFile, err := os.Create(outputFilePath)
-	if err != nil {
-		return fmt.Errorf("failed to create .cbz file: %w", err)
-	}
-	defer zipFile.Close()
-
-	// Create a new ZIP writer
-	zipWriter := zip.NewWriter(zipFile)
-	err = zipWriter.SetComment("Created by CBZOptimizer")
-	if err != nil {
-		return err
-	}
-	defer zipWriter.Close()
-
-	// Write each page to the ZIP archive
-	for _, page := range chapter.Pages {
-		// Construct the file name for the page
-		var fileName string
-		if page.IsSplitted {
-			// Use the format page%03d-%02d for split pages
-			fileName = fmt.Sprintf("page_%04d-%02d%s", page.Index, page.SplitPartIndex, page.Extension)
-		} else {
-			// Use the format page%03d for non-split pages
-			fileName = fmt.Sprintf("page_%04d%s", page.Index, page.Extension)
-		}
-
-		// Create a new file in the ZIP archive
-		fileWriter, err := zipWriter.CreateHeader(&zip.FileHeader{
-			Name:     fileName,
-			Method:   zip.Store,
-			Modified: time.Now(),
-		})
-		if err != nil {
-			return fmt.Errorf("failed to create file in .cbz: %w", err)
-		}
-
-		// Write the page contents to the file
-		_, err = fileWriter.Write(page.Contents.Bytes())
-		if err != nil {
-			return fmt.Errorf("failed to write page contents: %w", err)
-		}
-	}
-
-	// Optionally, write the ComicInfo.xml file if present
-	if chapter.ComicInfoXml != "" {
-		comicInfoWriter, err := zipWriter.CreateHeader(&zip.FileHeader{
-			Name:     "ComicInfo.xml",
-			Method:   zip.Deflate,
-			Modified: time.Now(),
-		})
-		if err != nil {
-			return fmt.Errorf("failed to create ComicInfo.xml in .cbz: %w", err)
-		}
-
-		_, err = comicInfoWriter.Write([]byte(chapter.ComicInfoXml))
-		if err != nil {
-			return fmt.Errorf("failed to write ComicInfo.xml contents: %w", err)
-		}
-	}
-
-	if chapter.IsConverted {
-		convertedWriter, err := zipWriter.CreateHeader(&zip.FileHeader{
-			Name:     "Converted.txt",
-			Method:   zip.Deflate,
-			Modified: time.Now(),
-		})
-		if err != nil {
-			return fmt.Errorf("failed to create Converted.txt in .cbz: %w", err)
-		}
-
-		_, err = convertedWriter.Write([]byte(fmt.Sprintf("%s\nThis chapter has been converted by CBZOptimizer.", chapter.ConvertedTime)))
-		if err != nil {
-			return fmt.Errorf("failed to write Converted.txt contents: %w", err)
-		}
-	}
-
-	return nil
-}

cbz/cbz_loader.go

@@ -1,90 +0,0 @@
-package cbz
-
-import (
-	"archive/zip"
-	"bufio"
-	"bytes"
-	"fmt"
-	"github.com/araddon/dateparse"
-	"github.com/belphemur/CBZOptimizer/manga"
-	"io"
-	"path/filepath"
-	"strings"
-)
-
-func LoadChapter(filePath string) (*manga.Chapter, error) {
-	// Open the .cbz file
-	r, err := zip.OpenReader(filePath)
-	if err != nil {
-		return nil, fmt.Errorf("failed to open .cbz file: %w", err)
-	}
-	defer r.Close()
-
-	chapter := &manga.Chapter{
-		FilePath: filePath,
-	}
-
-	for _, f := range r.File {
-		if f.FileInfo().IsDir() {
-			continue
-		}
-		// Open the file inside the zip
-		rc, err := f.Open()
-		if err != nil {
-			return nil, fmt.Errorf("failed to open file inside .cbz: %w", err)
-		}
-
-		// Determine the file extension
-		ext := strings.ToLower(filepath.Ext(f.Name))
-
-		if ext == ".xml" && strings.ToLower(filepath.Base(f.Name)) == "comicinfo.xml" {
-			// Read the ComicInfo.xml file content
-			xmlContent, err := io.ReadAll(rc)
-			if err != nil {
-				rc.Close()
-				return nil, fmt.Errorf("failed to read ComicInfo.xml content: %w", err)
-			}
-			chapter.ComicInfoXml = string(xmlContent)
-		} else if ext == ".txt" && strings.ToLower(filepath.Base(f.Name)) == "converted.txt" {
-			textContent, err := io.ReadAll(rc)
-			if err != nil {
-				rc.Close()
-				return nil, fmt.Errorf("failed to read Converted.xml content: %w", err)
-			}
-			scanner := bufio.NewScanner(bytes.NewReader(textContent))
-			if scanner.Scan() {
-				convertedTime := scanner.Text()
-				chapter.ConvertedTime, err = dateparse.ParseAny(convertedTime)
-				if err != nil {
-					rc.Close()
-					return nil, fmt.Errorf("failed to parse converted time: %w", err)
-				}
-				chapter.IsConverted = true
-			}
-		} else {
-			// Read the file contents for page
-			buf := new(bytes.Buffer)
-			_, err = io.Copy(buf, rc)
-			if err != nil {
-				rc.Close()
-				return nil, fmt.Errorf("failed to read file contents: %w", err)
-			}
-
-			// Create a new Page object
-			page := &manga.Page{
-				Index:      uint16(len(chapter.Pages)), // Simple index based on order
-				Extension:  ext,
-				Size:       uint64(buf.Len()),
-				Contents:   buf,
-				IsSplitted: false,
-			}
-
-			// Add the page to the chapter
-			chapter.Pages = append(chapter.Pages, page)
-		}
-		rc.Close()
-
-	}
-
-	return chapter, nil
-}

cmd/cbzoptimizer/commands/optimize_command.go

@@ -0,0 +1,195 @@
+package commands
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+
+	utils2 "github.com/belphemur/CBZOptimizer/v2/internal/utils"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/constant"
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"github.com/thediveo/enumflag/v2"
+)
+
+var converterType constant.ConversionFormat
+
+func init() {
+	command := &cobra.Command{
+		Use:   "optimize [folder]",
+		Short: "Optimize all CBZ/CBR files in a folder recursively",
+		Long:  "Optimize all CBZ/CBR files in a folder recursively.\nIt will take all the different pages in the CBZ/CBR files and convert them to the given format.\nThe original CBZ/CBR files will be kept intact depending if you choose to override or not.",
+		RunE:  ConvertCbzCommand,
+		Args:  cobra.ExactArgs(1),
+	}
+	formatFlag := enumflag.New(&converterType, "format", constant.CommandValue, enumflag.EnumCaseInsensitive)
+	_ = formatFlag.RegisterCompletion(command, "format", constant.HelpText)
+
+	command.Flags().Uint8P("quality", "q", 85, "Quality for conversion (0-100)")
+	command.Flags().IntP("parallelism", "n", 2, "Number of chapters to convert in parallel")
+	command.Flags().BoolP("override", "o", false, "Override the original CBZ/CBR files")
+	command.Flags().BoolP("split", "s", false, "Split long pages into smaller chunks")
+	command.Flags().DurationP("timeout", "t", 0, "Maximum time allowed for converting a single chapter (e.g., 30s, 5m, 1h). 0 means no timeout")
+	command.PersistentFlags().VarP(
+		formatFlag,
+		"format", "f",
+		fmt.Sprintf("Format to convert the images to: %s", constant.ListAll()))
+	command.PersistentFlags().Lookup("format").NoOptDefVal = constant.DefaultConversion.String()
+
+	AddCommand(command)
+}
+
+func ConvertCbzCommand(cmd *cobra.Command, args []string) error {
+	log.Info().Str("command", "optimize").Msg("Starting optimize command")
+
+	path := args[0]
+	if path == "" {
+		log.Error().Msg("Path argument is required but empty")
+		return fmt.Errorf("path is required")
+	}
+
+	log.Debug().Str("input_path", path).Msg("Validating input path")
+	if !utils2.IsValidFolder(path) {
+		log.Error().Str("input_path", path).Msg("Path validation failed - not a valid folder")
+		return fmt.Errorf("the path needs to be a folder")
+	}
+	log.Debug().Str("input_path", path).Msg("Input path validated successfully")
+
+	log.Debug().Msg("Parsing command-line flags")
+
+	quality, err := cmd.Flags().GetUint8("quality")
+	if err != nil || quality <= 0 || quality > 100 {
+		log.Error().Err(err).Uint8("quality", quality).Msg("Invalid quality value")
+		return fmt.Errorf("invalid quality value")
+	}
+	log.Debug().Uint8("quality", quality).Msg("Quality parameter validated")
+
+	override, err := cmd.Flags().GetBool("override")
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to parse override flag")
+		return fmt.Errorf("invalid quality value")
+	}
+	log.Debug().Bool("override", override).Msg("Override parameter parsed")
+
+	split, err := cmd.Flags().GetBool("split")
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to parse split flag")
+		return fmt.Errorf("invalid split value")
+	}
+	log.Debug().Bool("split", split).Msg("Split parameter parsed")
+
+	timeout, err := cmd.Flags().GetDuration("timeout")
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to parse timeout flag")
+		return fmt.Errorf("invalid timeout value")
+	}
+	log.Debug().Dur("timeout", timeout).Msg("Timeout parameter parsed")
+
+	parallelism, err := cmd.Flags().GetInt("parallelism")
+	if err != nil || parallelism < 1 {
+		log.Error().Err(err).Int("parallelism", parallelism).Msg("Invalid parallelism value")
+		return fmt.Errorf("invalid parallelism value")
+	}
+	log.Debug().Int("parallelism", parallelism).Msg("Parallelism parameter validated")
+
+	log.Debug().Str("converter_format", converterType.String()).Msg("Initializing converter")
+	chapterConverter, err := converter.Get(converterType)
+	if err != nil {
+		log.Error().Str("converter_format", converterType.String()).Err(err).Msg("Failed to get chapter converter")
+		return fmt.Errorf("failed to get chapterConverter: %v", err)
+	}
+	log.Debug().Str("converter_format", converterType.String()).Msg("Converter initialized successfully")
+
+	log.Debug().Msg("Preparing converter")
+	err = chapterConverter.PrepareConverter()
+	if err != nil {
+		log.Error().Err(err).Msg("Failed to prepare converter")
+		return fmt.Errorf("failed to prepare converter: %v", err)
+	}
+	log.Debug().Msg("Converter prepared successfully")
+
+	// Channel to manage the files to process
+	fileChan := make(chan string)
+	// Channel to collect errors
+	errorChan := make(chan error, parallelism)
+
+	// WaitGroup to wait for all goroutines to finish
+	var wg sync.WaitGroup
+
+	// Start worker goroutines
+	log.Debug().Int("worker_count", parallelism).Msg("Starting worker goroutines")
+	for i := 0; i < parallelism; i++ {
+		wg.Add(1)
+		go func(workerID int) {
+			defer wg.Done()
+			log.Debug().Int("worker_id", workerID).Msg("Worker started")
+			for path := range fileChan {
+				log.Debug().Int("worker_id", workerID).Str("file_path", path).Msg("Worker processing file")
+				err := utils2.Optimize(&utils2.OptimizeOptions{
+					ChapterConverter: chapterConverter,
+					Path:             path,
+					Quality:          quality,
+					Override:         override,
+					Split:            split,
+					Timeout:          timeout,
+				})
+				if err != nil {
+					log.Error().Int("worker_id", workerID).Str("file_path", path).Err(err).Msg("Worker encountered error")
+					errorChan <- fmt.Errorf("error processing file %s: %w", path, err)
+				} else {
+					log.Debug().Int("worker_id", workerID).Str("file_path", path).Msg("Worker completed file successfully")
+				}
+			}
+			log.Debug().Int("worker_id", workerID).Msg("Worker finished")
+		}(i)
+	}
+	log.Debug().Int("worker_count", parallelism).Msg("All worker goroutines started")
+
+	// Walk the path and send files to the channel
+	log.Debug().Str("search_path", path).Msg("Starting filesystem walk for CBZ/CBR files")
+	err = filepath.WalkDir(path, func(filePath string, info os.DirEntry, err error) error {
+		if err != nil {
+			log.Error().Str("file_path", filePath).Err(err).Msg("Error during filesystem walk")
+			return err
+		}
+
+		if !info.IsDir() {
+			fileName := strings.ToLower(info.Name())
+			if strings.HasSuffix(fileName, ".cbz") || strings.HasSuffix(fileName, ".cbr") {
+				log.Debug().Str("file_path", filePath).Str("file_name", fileName).Msg("Found CBZ/CBR file")
+				fileChan <- filePath
+			}
+		}
+
+		return nil
+	})
+
+	if err != nil {
+		log.Error().Str("search_path", path).Err(err).Msg("Filesystem walk failed")
+		return fmt.Errorf("error walking the path: %w", err)
+	}
+	log.Debug().Str("search_path", path).Msg("Filesystem walk completed")
+
+	close(fileChan) // Close the channel to signal workers to stop
+	log.Debug().Msg("File channel closed, waiting for workers to complete")
+	wg.Wait() // Wait for all workers to finish
+	log.Debug().Msg("All workers completed")
+	close(errorChan) // Close the error channel
+
+	var errs []error
+	for err := range errorChan {
+		errs = append(errs, err)
+		log.Error().Err(err).Msg("Collected processing error")
+	}
+
+	if len(errs) > 0 {
+		log.Error().Int("error_count", len(errs)).Msg("Command completed with errors")
+		return fmt.Errorf("encountered errors: %v", errs)
+	}
+
+	log.Info().Str("search_path", path).Msg("Optimize command completed successfully")
+	return nil
+}

cmd/cbzoptimizer/commands/optimize_command_test.go

@@ -0,0 +1,174 @@
+package commands
+
+import (
+	"context"
+	"log"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/belphemur/CBZOptimizer/v2/internal/cbz"
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/internal/utils/errs"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/constant"
+	"github.com/spf13/cobra"
+)
+
+// MockConverter is a mock implementation of the Converter interface
+type MockConverter struct{}
+
+func (m *MockConverter) ConvertChapter(ctx context.Context, chapter *manga.Chapter, quality uint8, split bool, progress func(message string, current uint32, total uint32)) (*manga.Chapter, error) {
+	chapter.IsConverted = true
+	chapter.ConvertedTime = time.Now()
+	return chapter, nil
+}
+
+func (m *MockConverter) Format() constant.ConversionFormat {
+	return constant.WebP
+}
+
+func (m *MockConverter) PrepareConverter() error {
+	return nil
+}
+
+func TestConvertCbzCommand(t *testing.T) {
+	// Create a temporary directory for testing
+	tempDir, err := os.MkdirTemp("", "test_cbz")
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer errs.CaptureGeneric(&err, os.RemoveAll, tempDir, "failed to remove temporary directory")
+
+	// Locate the testdata directory
+	testdataDir := filepath.Join("../../../testdata")
+	if _, err := os.Stat(testdataDir); os.IsNotExist(err) {
+		t.Fatalf("testdata directory not found")
+	}
+
+	// Copy sample CBZ/CBR files from testdata to the temporary directory
+	err = filepath.Walk(testdataDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() {
+			fileName := strings.ToLower(info.Name())
+			if strings.HasSuffix(fileName, ".cbz") || strings.HasSuffix(fileName, ".cbr") {
+				destPath := filepath.Join(tempDir, info.Name())
+				data, err := os.ReadFile(path)
+				if err != nil {
+					return err
+				}
+				return os.WriteFile(destPath, data, info.Mode())
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatalf("Failed to copy sample files: %v", err)
+	}
+
+	// Mock the converter.Get function
+	originalGet := converter.Get
+	converter.Get = func(format constant.ConversionFormat) (converter.Converter, error) {
+		return &MockConverter{}, nil
+	}
+	defer func() { converter.Get = originalGet }()
+
+	// Set up the command
+	cmd := &cobra.Command{
+		Use: "optimize",
+	}
+	cmd.Flags().Uint8P("quality", "q", 85, "Quality for conversion (0-100)")
+	cmd.Flags().IntP("parallelism", "n", 2, "Number of chapters to convert in parallel")
+	cmd.Flags().BoolP("override", "o", false, "Override the original CBZ/CBR files")
+	cmd.Flags().BoolP("split", "s", false, "Split long pages into smaller chunks")
+	cmd.Flags().DurationP("timeout", "t", 0, "Maximum time allowed for converting a single chapter (e.g., 30s, 5m, 1h). 0 means no timeout")
+
+	// Execute the command
+	err = ConvertCbzCommand(cmd, []string{tempDir})
+	if err != nil {
+		t.Fatalf("Command execution failed: %v", err)
+	}
+
+	// Track expected converted files for verification
+	expectedFiles := make(map[string]bool)
+	convertedFiles := make(map[string]bool)
+
+	// First pass: identify original files and expected converted filenames
+	err = filepath.Walk(tempDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if info.IsDir() {
+			return nil
+		}
+		fileName := strings.ToLower(info.Name())
+		if strings.HasSuffix(fileName, ".cbz") || strings.HasSuffix(fileName, ".cbr") {
+			if !strings.Contains(fileName, "_converted") {
+				// This is an original file, determine expected converted filename
+				baseName := strings.TrimSuffix(info.Name(), filepath.Ext(info.Name()))
+				expectedConverted := baseName + "_converted.cbz"
+				expectedFiles[expectedConverted] = false // false means not yet found
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatalf("Error identifying original files: %v", err)
+	}
+
+	// Second pass: verify converted files exist and are properly converted
+	err = filepath.Walk(tempDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if info.IsDir() {
+			return nil
+		}
+		fileName := info.Name()
+
+		// Check if this is a converted file (should only be .cbz, never .cbr)
+		if strings.HasSuffix(fileName, "_converted.cbz") {
+			convertedFiles[fileName] = true
+			expectedFiles[fileName] = true // Mark as found
+			t.Logf("Archive file found: %s", path)
+
+			// Load the converted chapter
+			chapter, err := cbz.LoadChapter(path)
+			if err != nil {
+				return err
+			}
+
+			// Check if the chapter is marked as converted
+			if !chapter.IsConverted {
+				t.Errorf("Chapter is not marked as converted: %s", path)
+			}
+
+			// Check if the ConvertedTime is set
+			if chapter.ConvertedTime.IsZero() {
+				t.Errorf("ConvertedTime is not set for chapter: %s", path)
+			}
+			t.Logf("Archive file [%s] is converted: %s", path, chapter.ConvertedTime)
+		} else if strings.HasSuffix(fileName, "_converted.cbr") {
+			t.Errorf("Found incorrectly named converted file: %s (should be .cbz, not .cbr)", fileName)
+		}
+
+		return nil
+	})
+	if err != nil {
+		t.Fatalf("Error verifying converted files: %v", err)
+	}
+
+	// Verify all expected files were found
+	for expectedFile, found := range expectedFiles {
+		if !found {
+			t.Errorf("Expected converted file not found: %s", expectedFile)
+		}
+	}
+
+	// Log summary
+	t.Logf("Found %d converted files", len(convertedFiles))
+}

cmd/cbzoptimizer/commands/rootcmd.go

@@ -0,0 +1,135 @@
+package commands
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+
+	"github.com/rs/zerolog"
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/thediveo/enumflag/v2"
+)
+
+// Map zerolog levels to their textual representations
+var LogLevelIds = map[zerolog.Level][]string{
+	zerolog.PanicLevel: {"panic"},
+	zerolog.FatalLevel: {"fatal"},
+	zerolog.ErrorLevel: {"error"},
+	zerolog.WarnLevel:  {"warn", "warning"},
+	zerolog.InfoLevel:  {"info"},
+	zerolog.DebugLevel: {"debug"},
+	zerolog.TraceLevel: {"trace"},
+}
+
+// Global log level variable with default
+var logLevel zerolog.Level = zerolog.InfoLevel
+
+var rootCmd = &cobra.Command{
+	Use:   "cbzconverter",
+	Short: "Convert CBZ files using a specified converter",
+}
+
+func SetVersionInfo(version, commit, date string) {
+	rootCmd.Version = fmt.Sprintf("%s (Built on %s from Git SHA %s)", version, date, commit)
+}
+
+func getPath() string {
+	return filepath.Join(map[string]string{
+		"windows": filepath.Join(os.Getenv("APPDATA")),
+		"darwin":  filepath.Join(os.Getenv("HOME"), ".config"),
+		"linux":   filepath.Join(os.Getenv("HOME"), ".config"),
+	}[runtime.GOOS], "CBZOptimizer")
+}
+
+func init() {
+	configFolder := getPath()
+
+	viper.SetConfigName("config")
+	viper.SetConfigType("yaml")
+	viper.AddConfigPath(configFolder)
+	viper.SetEnvPrefix("CBZ")
+	viper.AutomaticEnv()
+
+	// Add log level flag (accepts zerolog levels: panic, fatal, error, warn, info, debug, trace)
+	ef := enumflag.New(&logLevel, "log", LogLevelIds, enumflag.EnumCaseInsensitive)
+	rootCmd.PersistentFlags().VarP(
+		ef,
+		"log", "l",
+		"Set log level; can be 'panic', 'fatal', 'error', 'warn', 'info', 'debug', or 'trace'")
+	ef.RegisterCompletion(rootCmd, "log", enumflag.Help[zerolog.Level]{
+		zerolog.PanicLevel: "Only log panic messages",
+		zerolog.FatalLevel: "Log fatal and panic messages",
+		zerolog.ErrorLevel: "Log error, fatal, and panic messages",
+		zerolog.WarnLevel:  "Log warn, error, fatal, and panic messages",
+		zerolog.InfoLevel:  "Log info, warn, error, fatal, and panic messages",
+		zerolog.DebugLevel: "Log debug, info, warn, error, fatal, and panic messages",
+		zerolog.TraceLevel: "Log all messages including trace",
+	})
+
+	// Add log level environment variable support
+	viper.BindEnv("log", "LOG_LEVEL")
+	viper.BindPFlag("log", rootCmd.PersistentFlags().Lookup("log"))
+
+	rootCmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {
+		ConfigureLogging()
+	}
+
+	// Ensure the configuration directory exists
+
+	err := os.MkdirAll(configFolder, os.ModePerm)
+	if err != nil {
+		panic(fmt.Errorf("fatal error config file: %w", err))
+	}
+	if err := viper.ReadInConfig(); err != nil {
+		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
+			err := viper.SafeWriteConfig()
+			if err != nil {
+				panic(fmt.Errorf("fatal error config file: %w", err))
+			}
+		} else {
+			panic(fmt.Errorf("fatal error config file: %w", err))
+		}
+	}
+}
+
+// Execute executes the root command.
+func Execute() {
+	if err := rootCmd.Execute(); err != nil {
+		log.Fatal().Err(err).Msg("Command execution failed")
+	}
+}
+func AddCommand(cmd *cobra.Command) {
+	rootCmd.AddCommand(cmd)
+}
+
+// ConfigureLogging sets up zerolog based on command-line flags and environment variables
+func ConfigureLogging() {
+	// Start with default log level (info)
+	level := zerolog.InfoLevel
+
+	// Check LOG_LEVEL environment variable first
+	envLogLevel := viper.GetString("log")
+	if envLogLevel != "" {
+		if parsedLevel, err := zerolog.ParseLevel(envLogLevel); err == nil {
+			level = parsedLevel
+		}
+	}
+
+	// Command-line log flag takes precedence over environment variable
+	// The logLevel variable will be set by the flag parsing, so if it's different from default, use it
+	if logLevel != zerolog.InfoLevel {
+		level = logLevel
+	}
+
+	// Set the global log level
+	zerolog.SetGlobalLevel(level)
+
+	// Configure console writer for readable output
+	log.Logger = log.Output(zerolog.ConsoleWriter{
+		Out:     os.Stderr,
+		NoColor: false,
+	})
+}

cmd/cbzoptimizer/commands/watch_command.go

@@ -1,18 +1,19 @@
-package cmd
+package commands
 
 import (
 	"fmt"
-	"github.com/belphemur/CBZOptimizer/converter"
-	"github.com/belphemur/CBZOptimizer/converter/constant"
-	"github.com/belphemur/CBZOptimizer/utils"
-	"github.com/pablodz/inotifywaitgo/inotifywaitgo"
-	"github.com/spf13/cobra"
-	"github.com/spf13/viper"
-	"github.com/thediveo/enumflag/v2"
-	"log"
 	"runtime"
 	"strings"
 	"sync"
+
+	utils2 "github.com/belphemur/CBZOptimizer/v2/internal/utils"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/constant"
+	"github.com/pablodz/inotifywaitgo/inotifywaitgo"
+	"github.com/rs/zerolog/log"
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/thediveo/enumflag/v2"
 )
 
 func init() {
@@ -21,8 +22,8 @@ func init() {
 	}
 	command := &cobra.Command{
 		Use:   "watch [folder]",
-		Short: "Watch a folder for new CBZ files",
-		Long:  "Watch a folder for new CBZ files.\nIt will watch a folder for new CBZ files and optimize them.",
+		Short: "Watch a folder for new CBZ/CBR files",
+		Long:  "Watch a folder for new CBZ/CBR files.\nIt will watch a folder for new CBZ/CBR files and optimize them.",
 		RunE:  WatchCommand,
 		Args:  cobra.ExactArgs(1),
 	}
@@ -32,9 +33,15 @@ func init() {
 	command.Flags().Uint8P("quality", "q", 85, "Quality for conversion (0-100)")
 	_ = viper.BindPFlag("quality", command.Flags().Lookup("quality"))
 
-	command.Flags().BoolP("override", "o", true, "Override the original CBZ files")
+	command.Flags().BoolP("override", "o", true, "Override the original CBZ/CBR files")
 	_ = viper.BindPFlag("override", command.Flags().Lookup("override"))
 
+	command.Flags().BoolP("split", "s", false, "Split long pages into smaller chunks")
+	_ = viper.BindPFlag("split", command.Flags().Lookup("split"))
+
+	command.Flags().DurationP("timeout", "t", 0, "Maximum time allowed for converting a single chapter (e.g., 30s, 5m, 1h). 0 means no timeout")
+	_ = viper.BindPFlag("timeout", command.Flags().Lookup("timeout"))
+
 	command.PersistentFlags().VarP(
 		formatFlag,
 		"format", "f",
@@ -50,7 +57,7 @@ func WatchCommand(_ *cobra.Command, args []string) error {
 		return fmt.Errorf("path is required")
 	}
 
-	if !utils.IsValidFolder(path) {
+	if !utils2.IsValidFolder(path) {
 		return fmt.Errorf("the path needs to be a folder")
 	}
 
@@ -61,6 +68,10 @@ func WatchCommand(_ *cobra.Command, args []string) error {
 
 	override := viper.GetBool("override")
 
+	split := viper.GetBool("split")
+
+	timeout := viper.GetDuration("timeout")
+
 	converterType := constant.FindConversionFormat(viper.GetString("format"))
 	chapterConverter, err := converter.Get(converterType)
 	if err != nil {
@@ -71,7 +82,7 @@ func WatchCommand(_ *cobra.Command, args []string) error {
 	if err != nil {
 		return fmt.Errorf("failed to prepare converter: %v", err)
 	}
-	log.Printf("Watching [%s] with [override: %t, quality: %d, format: %s]", path, override, quality, converterType.String())
+	log.Info().Str("path", path).Bool("override", override).Uint8("quality", quality).Str("format", converterType.String()).Bool("split", split).Msg("Watching directory")
 
 	events := make(chan inotifywaitgo.FileEvent)
 	errors := make(chan error)
@@ -100,16 +111,24 @@ func WatchCommand(_ *cobra.Command, args []string) error {
 	go func() {
 		defer wg.Done()
 		for event := range events {
-			log.Printf("[Event]%s, %v\n", event.Filename, event.Events)
+			log.Debug().Str("file", event.Filename).Interface("events", event.Events).Msg("File event")
 
-			if !strings.HasSuffix(strings.ToLower(event.Filename), ".cbz") {
+			filename := strings.ToLower(event.Filename)
+			if !strings.HasSuffix(filename, ".cbz") && !strings.HasSuffix(filename, ".cbr") {
 				continue
 			}
 
 			for _, e := range event.Events {
 				switch e {
 				case inotifywaitgo.CLOSE_WRITE, inotifywaitgo.MOVE:
-					err := utils.Optimize(chapterConverter, event.Filename, quality, override)
+					err := utils2.Optimize(&utils2.OptimizeOptions{
+						ChapterConverter: chapterConverter,
+						Path:             event.Filename,
+						Quality:          quality,
+						Override:         override,
+						Split:            split,
+						Timeout:          timeout,
+					})
 					if err != nil {
 						errors <- fmt.Errorf("error processing file %s: %w", event.Filename, err)
 					}
@@ -124,7 +143,7 @@ func WatchCommand(_ *cobra.Command, args []string) error {
 	go func() {
 		defer wg.Done()
 		for err := range errors {
-			log.Printf("Error: %v\n", err)
+			log.Error().Err(err).Msg("Watch error")
 		}
 	}()
 

cmd/cbzoptimizer/main.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"github.com/belphemur/CBZOptimizer/v2/cmd/cbzoptimizer/commands"
+)
+
+var (
+	version = "dev"
+	commit  = "none"
+	date    = "unknown"
+)
+
+func main() {
+	commands.SetVersionInfo(version, commit, date)
+
+	commands.Execute()
+}

cmd/optimize_command.go

@@ -1,128 +0,0 @@
-package cmd
-
-import (
-	"fmt"
-	"github.com/belphemur/CBZOptimizer/converter"
-	"github.com/belphemur/CBZOptimizer/converter/constant"
-	"github.com/belphemur/CBZOptimizer/utils"
-	"github.com/spf13/cobra"
-	"github.com/thediveo/enumflag/v2"
-	"os"
-	"path/filepath"
-	"strings"
-	"sync"
-)
-
-var converterType constant.ConversionFormat
-
-func init() {
-	command := &cobra.Command{
-		Use:   "optimize [folder]",
-		Short: "Optimize all CBZ files in a folder recursively",
-		Long:  "Optimize all CBZ files in a folder recursively.\nIt will take all the different pages in the CBZ files and convert them to the given format.\nThe original CBZ files will be kept intact depending if you choose to override or not.",
-		RunE:  ConvertCbzCommand,
-		Args:  cobra.ExactArgs(1),
-	}
-	formatFlag := enumflag.New(&converterType, "format", constant.CommandValue, enumflag.EnumCaseInsensitive)
-	_ = formatFlag.RegisterCompletion(command, "format", constant.HelpText)
-
-	command.Flags().Uint8P("quality", "q", 85, "Quality for conversion (0-100)")
-	command.Flags().IntP("parallelism", "n", 2, "Number of chapters to convert in parallel")
-	command.Flags().BoolP("override", "o", false, "Override the original CBZ files")
-	command.PersistentFlags().VarP(
-		formatFlag,
-		"format", "f",
-		fmt.Sprintf("Format to convert the images to: %s", constant.ListAll()))
-	command.PersistentFlags().Lookup("format").NoOptDefVal = constant.DefaultConversion.String()
-
-	AddCommand(command)
-}
-
-func ConvertCbzCommand(cmd *cobra.Command, args []string) error {
-	path := args[0]
-	if path == "" {
-		return fmt.Errorf("path is required")
-	}
-
-	if !utils.IsValidFolder(path) {
-		return fmt.Errorf("the path needs to be a folder")
-	}
-
-	quality, err := cmd.Flags().GetUint8("quality")
-	if err != nil || quality <= 0 || quality > 100 {
-		return fmt.Errorf("invalid quality value")
-	}
-
-	override, err := cmd.Flags().GetBool("override")
-	if err != nil {
-		return fmt.Errorf("invalid quality value")
-	}
-
-	parallelism, err := cmd.Flags().GetInt("parallelism")
-	if err != nil || parallelism < 1 {
-		return fmt.Errorf("invalid parallelism value")
-	}
-
-	chapterConverter, err := converter.Get(converterType)
-	if err != nil {
-		return fmt.Errorf("failed to get chapterConverter: %v", err)
-	}
-
-	err = chapterConverter.PrepareConverter()
-	if err != nil {
-		return fmt.Errorf("failed to prepare converter: %v", err)
-	}
-	// Channel to manage the files to process
-	fileChan := make(chan string)
-	// Channel to collect errors
-	errorChan := make(chan error, parallelism)
-
-	// WaitGroup to wait for all goroutines to finish
-	var wg sync.WaitGroup
-
-	// Start worker goroutines
-	for i := 0; i < parallelism; i++ {
-		wg.Add(1)
-		go func() {
-			defer wg.Done()
-			for path := range fileChan {
-				err := utils.Optimize(chapterConverter, path, quality, override)
-				if err != nil {
-					errorChan <- fmt.Errorf("error processing file %s: %w", path, err)
-				}
-			}
-		}()
-	}
-
-	// Walk the path and send files to the channel
-	err = filepath.WalkDir(path, func(path string, info os.DirEntry, err error) error {
-		if err != nil {
-			return err
-		}
-
-		if !info.IsDir() && strings.HasSuffix(strings.ToLower(info.Name()), ".cbz") {
-			fileChan <- path
-		}
-
-		return nil
-	})
-
-	if err != nil {
-		return fmt.Errorf("error walking the path: %w", err)
-	}
-
-	close(fileChan)  // Close the channel to signal workers to stop
-	wg.Wait()        // Wait for all workers to finish
-	close(errorChan) // Close the error channel
-
-	var errs []error
-	for err := range errorChan {
-		errs = append(errs, err)
-	}
-
-	if len(errs) > 0 {
-		return fmt.Errorf("encountered errors: %v", errs)
-	}
-
-	return nil
-}

cmd/optimize_command_test.go

@@ -1,121 +0,0 @@
-package cmd
-
-import (
-	"github.com/belphemur/CBZOptimizer/cbz"
-	"github.com/belphemur/CBZOptimizer/converter"
-	"github.com/belphemur/CBZOptimizer/converter/constant"
-	"github.com/belphemur/CBZOptimizer/manga"
-	"github.com/spf13/cobra"
-	"log"
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-	"time"
-)
-
-// MockConverter is a mock implementation of the Converter interface
-type MockConverter struct{}
-
-func (m *MockConverter) Format() constant.ConversionFormat {
-	return constant.WebP
-}
-
-func (m *MockConverter) ConvertChapter(chapter *manga.Chapter, quality uint8, progress func(string)) (*manga.Chapter, error) {
-	// Simulate conversion by setting the IsConverted flag
-	chapter.IsConverted = true
-	chapter.ConvertedTime = time.Now()
-	return chapter, nil
-}
-
-func (m *MockConverter) PrepareConverter() error {
-	return nil
-}
-
-func TestConvertCbzCommand(t *testing.T) {
-	// Create a temporary directory for testing
-	tempDir, err := os.MkdirTemp("", "test_cbz")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer os.RemoveAll(tempDir) // Clean up the temp directory when done
-
-	// Locate the testdata directory
-	testdataDir := filepath.Join("../testdata")
-	if _, err := os.Stat(testdataDir); os.IsNotExist(err) {
-		t.Fatalf("testdata directory not found")
-	}
-
-	// Copy sample CBZ files from testdata to the temporary directory
-	err = filepath.Walk(testdataDir, func(path string, info os.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-		if !info.IsDir() && strings.HasSuffix(strings.ToLower(info.Name()), ".cbz") {
-			destPath := filepath.Join(tempDir, info.Name())
-			data, err := os.ReadFile(path)
-			if err != nil {
-				return err
-			}
-			return os.WriteFile(destPath, data, info.Mode())
-		}
-		return nil
-	})
-	if err != nil {
-		t.Fatalf("Failed to copy sample files: %v", err)
-	}
-
-	// Mock the converter.Get function
-	originalGet := converter.Get
-	converter.Get = func(format constant.ConversionFormat) (converter.Converter, error) {
-		return &MockConverter{}, nil
-	}
-	defer func() { converter.Get = originalGet }()
-
-	// Set up the command
-	cmd := &cobra.Command{
-		Use: "optimize",
-	}
-	cmd.Flags().Uint8P("quality", "q", 85, "Quality for conversion (0-100)")
-	cmd.Flags().IntP("parallelism", "n", 2, "Number of chapters to convert in parallel")
-	cmd.Flags().BoolP("override", "o", false, "Override the original CBZ files")
-
-	// Execute the command
-	err = ConvertCbzCommand(cmd, []string{tempDir})
-	if err != nil {
-		t.Fatalf("Command execution failed: %v", err)
-	}
-
-	// Verify the results
-	err = filepath.Walk(tempDir, func(path string, info os.FileInfo, err error) error {
-		if err != nil {
-			return err
-		}
-		if info.IsDir() || !strings.HasSuffix(info.Name(), "_converted.cbz") {
-			return nil
-		}
-		t.Logf("CBZ file found: %s", path)
-
-		// Load the converted chapter
-		chapter, err := cbz.LoadChapter(path)
-		if err != nil {
-			return err
-		}
-
-		// Check if the chapter is marked as converted
-		if !chapter.IsConverted {
-			t.Errorf("Chapter is not marked as converted: %s", path)
-		}
-
-		// Check if the ConvertedTime is set
-		if chapter.ConvertedTime.IsZero() {
-			t.Errorf("ConvertedTime is not set for chapter: %s", path)
-		}
-		t.Logf("CBZ file [%s] is converted: %s", path, chapter.ConvertedTime)
-
-		return nil
-	})
-	if err != nil {
-		t.Fatalf("Error verifying converted files: %v", err)
-	}
-}

cmd/rootcmd.go

@@ -1,62 +0,0 @@
-package cmd
-
-import (
-	"fmt"
-	"github.com/spf13/cobra"
-	"github.com/spf13/viper"
-	"os"
-	"path/filepath"
-	"runtime"
-)
-
-var rootCmd = &cobra.Command{
-	Use:   "cbzconverter",
-	Short: "Convert CBZ files using a specified converter",
-}
-
-func SetVersionInfo(version, commit, date string) {
-	rootCmd.Version = fmt.Sprintf("%s (Built on %s from Git SHA %s)", version, date, commit)
-}
-
-func getPath() string {
-	return filepath.Join(map[string]string{
-		"windows": filepath.Join(os.Getenv("APPDATA")),
-		"darwin":  filepath.Join(os.Getenv("HOME"), ".config"),
-		"linux":   filepath.Join(os.Getenv("HOME"), ".config"),
-	}[runtime.GOOS], "CBZOptimizer")
-}
-
-func init() {
-	configFolder := getPath()
-
-	viper.SetConfigName("config")
-	viper.SetConfigType("yaml")
-	viper.AddConfigPath(configFolder)
-	viper.SetEnvPrefix("CBZ")
-	viper.AutomaticEnv()
-	err := os.MkdirAll(configFolder, os.ModePerm)
-	if err != nil {
-		panic(fmt.Errorf("fatal error config file: %w", err))
-	}
-	if err := viper.ReadInConfig(); err != nil {
-		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
-			err := viper.SafeWriteConfig()
-			if err != nil {
-				panic(fmt.Errorf("fatal error config file: %w", err))
-			}
-		} else {
-			panic(fmt.Errorf("fatal error config file: %w", err))
-		}
-	}
-}
-
-// Execute executes the root command.
-func Execute() {
-	if err := rootCmd.Execute(); err != nil {
-		fmt.Println(err)
-		os.Exit(1)
-	}
-}
-func AddCommand(cmd *cobra.Command) {
-	rootCmd.AddCommand(cmd)
-}

converter/converter_test.go

@@ -1,162 +0,0 @@
-package converter
-
-import (
-	"bytes"
-	"github.com/belphemur/CBZOptimizer/manga"
-	"image"
-	"image/jpeg"
-	"os"
-	"testing"
-)
-
-func TestConvertChapter(t *testing.T) {
-
-	testCases := []struct {
-		name           string
-		genTestChapter func(path string) (*manga.Chapter, error)
-	}{
-		{
-			name:           "All split pages",
-			genTestChapter: genBigPages,
-		},
-		{
-			name:           "No split pages",
-			genTestChapter: genSmallPages,
-		},
-		{
-			name:           "Mix of split and no split pages",
-			genTestChapter: genMixSmallBig,
-		},
-	}
-	// Load test genTestChapter from testdata
-	temp, err := os.CreateTemp("", "test_chapter_*.cbz")
-	if err != nil {
-		t.Fatalf("failed to create temporary file: %v", err)
-
-	}
-	defer os.Remove(temp.Name())
-	for _, converter := range Available() {
-		converter, err := Get(converter)
-		if err != nil {
-			t.Fatalf("failed to get converter: %v", err)
-		}
-		t.Run(converter.Format().String(), func(t *testing.T) {
-			for _, tc := range testCases {
-				t.Run(tc.name, func(t *testing.T) {
-					chapter, err := tc.genTestChapter(temp.Name())
-					if err != nil {
-						t.Fatalf("failed to load test genTestChapter: %v", err)
-					}
-
-					quality := uint8(80)
-
-					progress := func(msg string) {
-						t.Log(msg)
-					}
-
-					convertedChapter, err := converter.ConvertChapter(chapter, quality, progress)
-					if err != nil {
-						t.Fatalf("failed to convert genTestChapter: %v", err)
-					}
-
-					if len(convertedChapter.Pages) == 0 {
-						t.Fatalf("no pages were converted")
-					}
-
-					for _, page := range convertedChapter.Pages {
-						if page.Extension != ".webp" {
-							t.Errorf("page %d was not converted to webp format", page.Index)
-						}
-					}
-				})
-			}
-		})
-	}
-}
-
-func genBigPages(path string) (*manga.Chapter, error) {
-	file, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-
-	var pages []*manga.Page
-	for i := 0; i < 5; i++ { // Assuming there are 5 pages for the test
-		img := image.NewRGBA(image.Rect(0, 0, 300, 10000))
-		buf := new(bytes.Buffer)
-		err := jpeg.Encode(buf, img, nil)
-		if err != nil {
-			return nil, err
-		}
-		page := &manga.Page{
-			Index:     uint16(i),
-			Contents:  buf,
-			Extension: ".jpg",
-		}
-		pages = append(pages, page)
-	}
-
-	return &manga.Chapter{
-		FilePath: path,
-		Pages:    pages,
-	}, nil
-}
-
-func genSmallPages(path string) (*manga.Chapter, error) {
-	file, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-
-	var pages []*manga.Page
-	for i := 0; i < 5; i++ { // Assuming there are 5 pages for the test
-		img := image.NewRGBA(image.Rect(0, 0, 300, 1000))
-		buf := new(bytes.Buffer)
-		err := jpeg.Encode(buf, img, nil)
-		if err != nil {
-			return nil, err
-		}
-		page := &manga.Page{
-			Index:     uint16(i),
-			Contents:  buf,
-			Extension: ".jpg",
-		}
-		pages = append(pages, page)
-	}
-
-	return &manga.Chapter{
-		FilePath: path,
-		Pages:    pages,
-	}, nil
-}
-
-func genMixSmallBig(path string) (*manga.Chapter, error) {
-	file, err := os.Open(path)
-	if err != nil {
-		return nil, err
-	}
-	defer file.Close()
-
-	var pages []*manga.Page
-	for i := 0; i < 5; i++ { // Assuming there are 5 pages for the test
-		img := image.NewRGBA(image.Rect(0, 0, 300, 1000*(i+1)))
-		buf := new(bytes.Buffer)
-		err := jpeg.Encode(buf, img, nil)
-		if err != nil {
-			return nil, err
-		}
-		page := &manga.Page{
-			Index:     uint16(i),
-			Contents:  buf,
-			Extension: ".jpg",
-		}
-		pages = append(pages, page)
-	}
-
-	return &manga.Chapter{
-		FilePath: path,
-		Pages:    pages,
-	}, nil
-}

converter/webp/webp_converter.go

@@ -1,231 +0,0 @@
-package webp
-
-import (
-	"bytes"
-	"fmt"
-	"github.com/belphemur/CBZOptimizer/converter/constant"
-	packer2 "github.com/belphemur/CBZOptimizer/manga"
-	"github.com/oliamb/cutter"
-	"golang.org/x/exp/slices"
-	_ "golang.org/x/image/webp"
-	"image"
-	_ "image/jpeg"
-	"image/png"
-	"io"
-	"runtime"
-	"sync"
-	"sync/atomic"
-)
-
-type Converter struct {
-	maxHeight  int
-	cropHeight int
-	isPrepared bool
-}
-
-func (converter *Converter) Format() (format constant.ConversionFormat) {
-	return constant.WebP
-}
-
-func New() *Converter {
-	return &Converter{
-		//maxHeight: 16383 / 2,
-		maxHeight:  4000,
-		cropHeight: 2000,
-		isPrepared: false,
-	}
-}
-
-func (converter *Converter) PrepareConverter() error {
-	if converter.isPrepared {
-		return nil
-	}
-	err := PrepareEncoder()
-	if err != nil {
-		return err
-	}
-	converter.isPrepared = true
-	return nil
-}
-
-func (converter *Converter) ConvertChapter(chapter *packer2.Chapter, quality uint8, progress func(string)) (*packer2.Chapter, error) {
-	err := converter.PrepareConverter()
-	if err != nil {
-		return nil, err
-	}
-
-	var wgConvertedPages sync.WaitGroup
-	maxGoroutines := runtime.NumCPU()
-
-	pagesChan := make(chan *packer2.PageContainer, maxGoroutines)
-	errChan := make(chan error, maxGoroutines)
-
-	var wgPages sync.WaitGroup
-	wgPages.Add(len(chapter.Pages))
-
-	guard := make(chan struct{}, maxGoroutines)
-	pagesMutex := sync.Mutex{}
-	var pages []*packer2.Page
-	var totalPages = uint32(len(chapter.Pages))
-
-	go func() {
-		for page := range pagesChan {
-			guard <- struct{}{} // would block if guard channel is already filled
-			go func(pageToConvert *packer2.PageContainer) {
-				defer wgConvertedPages.Done()
-				convertedPage, err := converter.convertPage(pageToConvert, quality)
-				if err != nil {
-					if convertedPage == nil {
-						errChan <- err
-						<-guard
-						return
-					}
-					buffer := new(bytes.Buffer)
-					err := png.Encode(buffer, convertedPage.Image)
-					if err != nil {
-						errChan <- err
-						<-guard
-						return
-					}
-					convertedPage.Page.Contents = buffer
-					convertedPage.Page.Extension = ".png"
-					convertedPage.Page.Size = uint64(buffer.Len())
-				}
-				pagesMutex.Lock()
-				pages = append(pages, convertedPage.Page)
-				progress(fmt.Sprintf("Converted %d/%d pages to %s format", len(pages), totalPages, converter.Format()))
-				pagesMutex.Unlock()
-				<-guard
-			}(page)
-		}
-	}()
-
-	for _, page := range chapter.Pages {
-		go func(page *packer2.Page) {
-			defer wgPages.Done()
-
-			splitNeeded, img, format, err := converter.checkPageNeedsSplit(page)
-			if err != nil {
-				errChan <- fmt.Errorf("error checking if page %d of genTestChapter %s needs split: %v", page.Index, chapter.FilePath, err)
-				return
-			}
-
-			if !splitNeeded {
-				wgConvertedPages.Add(1)
-				pagesChan <- packer2.NewContainer(page, img, format)
-				return
-			}
-			images, err := converter.cropImage(img)
-			if err != nil {
-				errChan <- fmt.Errorf("error converting page %d of genTestChapter %s to webp: %v", page.Index, chapter.FilePath, err)
-				return
-			}
-
-			atomic.AddUint32(&totalPages, uint32(len(images)-1))
-			for i, img := range images {
-				page := &packer2.Page{Index: page.Index, IsSplitted: true, SplitPartIndex: uint16(i)}
-				wgConvertedPages.Add(1)
-				pagesChan <- packer2.NewContainer(page, img, "N/A")
-			}
-		}(page)
-	}
-
-	wgPages.Wait()
-	wgConvertedPages.Wait()
-	close(pagesChan)
-	close(errChan)
-
-	var errList []error
-	for err := range errChan {
-		errList = append(errList, err)
-	}
-
-	if len(errList) > 0 {
-		return nil, fmt.Errorf("encountered errors: %v", errList)
-	}
-
-	slices.SortFunc(pages, func(a, b *packer2.Page) int {
-		if a.Index == b.Index {
-			return int(b.SplitPartIndex - a.SplitPartIndex)
-		}
-		return int(b.Index - a.Index)
-	})
-	chapter.Pages = pages
-
-	runtime.GC()
-
-	return chapter, nil
-}
-
-func (converter *Converter) cropImage(img image.Image) ([]image.Image, error) {
-	bounds := img.Bounds()
-	height := bounds.Dy()
-
-	numParts := height / converter.cropHeight
-	if height%converter.cropHeight != 0 {
-		numParts++
-	}
-
-	parts := make([]image.Image, numParts)
-
-	for i := 0; i < numParts; i++ {
-		partHeight := converter.cropHeight
-		if i == numParts-1 {
-			partHeight = height - i*converter.cropHeight
-		}
-
-		part, err := cutter.Crop(img, cutter.Config{
-			Width:  bounds.Dx(),
-			Height: partHeight,
-			Anchor: image.Point{Y: i * converter.cropHeight},
-			Mode:   cutter.TopLeft,
-		})
-		if err != nil {
-			return nil, fmt.Errorf("error cropping part %d: %v", i+1, err)
-		}
-
-		parts[i] = part
-	}
-
-	return parts, nil
-}
-
-func (converter *Converter) checkPageNeedsSplit(page *packer2.Page) (bool, image.Image, string, error) {
-	reader := io.Reader(bytes.NewBuffer(page.Contents.Bytes()))
-	img, format, err := image.Decode(reader)
-	if err != nil {
-		return false, nil, format, err
-	}
-
-	bounds := img.Bounds()
-	height := bounds.Dy()
-
-	return height >= converter.maxHeight, img, format, nil
-}
-
-func (converter *Converter) convertPage(container *packer2.PageContainer, quality uint8) (*packer2.PageContainer, error) {
-	if container.Format == "webp" {
-		return container, nil
-	}
-	converted, err := converter.convert(container.Image, uint(quality))
-	if err != nil {
-		return nil, err
-	}
-	container.Page.Contents = converted
-	container.Page.Extension = ".webp"
-	container.Page.Size = uint64(converted.Len())
-	return container, nil
-}
-
-// convert converts an image to the WebP format. It decodes the image from the input buffer,
-// encodes it as a WebP file using the webp.Encode() function, and returns the resulting WebP
-// file as a bytes.Buffer.
-func (converter *Converter) convert(image image.Image, quality uint) (*bytes.Buffer, error) {
-	var buf bytes.Buffer
-	err := Encode(&buf, image, quality)
-	if err != nil {
-		return nil, err
-	}
-
-	return &buf, nil
-}

go.mod

@@ -1,49 +1,64 @@
-module github.com/belphemur/CBZOptimizer
+module github.com/belphemur/CBZOptimizer/v2
 
-go 1.23.0
+go 1.25
 
 require (
 	github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de
 	github.com/belphemur/go-webpbin/v2 v2.0.0
+	github.com/mholt/archives v0.1.3
 	github.com/oliamb/cutter v0.2.2
-	github.com/pablodz/inotifywaitgo v0.0.7
-	github.com/samber/lo v1.47.0
-	github.com/spf13/cobra v1.8.1
-	github.com/spf13/viper v1.19.0
-	github.com/thediveo/enumflag/v2 v2.0.5
-	golang.org/x/exp v0.0.0-20240823005443-9b4947da3948
-	golang.org/x/image v0.19.0
+	github.com/pablodz/inotifywaitgo v0.0.9
+	github.com/rs/zerolog v1.34.0
+	github.com/samber/lo v1.51.0
+	github.com/spf13/cobra v1.9.1
+	github.com/spf13/viper v1.20.1
+	github.com/stretchr/testify v1.11.0
+	github.com/thediveo/enumflag/v2 v2.0.7
+	golang.org/x/exp v0.0.0-20250819193227-8b4c13bb791b
+	golang.org/x/image v0.30.0
 )
 
 require (
-	github.com/andybalholm/brotli v1.1.0 // indirect
+	github.com/STARRY-S/zip v0.2.1 // indirect
+	github.com/andybalholm/brotli v1.1.2-0.20250424173009-453214e765f3 // indirect
 	github.com/belphemur/go-binwrapper v0.0.0-20240827152605-33977349b1f0 // indirect
-	github.com/dsnet/compress v0.0.2-0.20210315054119-f66993602bf5 // indirect
-	github.com/fsnotify/fsnotify v1.7.0 // indirect
+	github.com/bodgit/plumbing v1.3.0 // indirect
+	github.com/bodgit/sevenzip v1.6.0 // indirect
+	github.com/bodgit/windows v1.0.1 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
+	github.com/dsnet/compress v0.0.2-0.20230904184137-39efe44ab707 // indirect
+	github.com/fsnotify/fsnotify v1.8.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/golang/snappy v0.0.4 // indirect
-	github.com/hashicorp/hcl v1.0.0 // indirect
+	github.com/hashicorp/errwrap v1.1.0 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jfrog/archiver/v3 v3.6.1 // indirect
-	github.com/klauspost/compress v1.17.9 // indirect
+	github.com/klauspost/compress v1.17.11 // indirect
 	github.com/klauspost/pgzip v1.2.6 // indirect
-	github.com/magiconair/properties v1.8.7 // indirect
-	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/mikelolasagasti/xz v1.0.1 // indirect
+	github.com/minio/minlz v1.0.0 // indirect
 	github.com/nwaples/rardecode v1.1.3 // indirect
-	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
+	github.com/nwaples/rardecode/v2 v2.1.0 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.3 // indirect
 	github.com/pierrec/lz4/v4 v4.1.21 // indirect
-	github.com/sagikazarmark/locafero v0.4.0 // indirect
-	github.com/sagikazarmark/slog-shim v0.1.0 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/sagikazarmark/locafero v0.7.0 // indirect
+	github.com/sorairolake/lzip-go v0.3.5 // indirect
 	github.com/sourcegraph/conc v0.3.0 // indirect
-	github.com/spf13/afero v1.11.0 // indirect
-	github.com/spf13/cast v1.6.0 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/spf13/afero v1.12.0 // indirect
+	github.com/spf13/cast v1.7.1 // indirect
+	github.com/spf13/pflag v1.0.6 // indirect
 	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/ulikunitz/xz v0.5.12 // indirect
 	github.com/xi2/xz v0.0.0-20171230120015-48954b6210f8 // indirect
 	go.uber.org/atomic v1.9.0 // indirect
 	go.uber.org/multierr v1.9.0 // indirect
-	golang.org/x/sys v0.18.0 // indirect
-	golang.org/x/text v0.17.0 // indirect
-	gopkg.in/ini.v1 v1.67.0 // indirect
+	go4.org v0.0.0-20230225012048-214862532bf5 // indirect
+	golang.org/x/sys v0.29.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,141 +1,408 @@
-github.com/andybalholm/brotli v1.1.0 h1:eLKJA0d02Lf0mVpIDgYnqXcUn0GqVmEFny3VuID1U3M=
-github.com/andybalholm/brotli v1.1.0/go.mod h1:sms7XGricyQI9K10gOSf56VKKWS4oLer58Q+mhRPtnY=
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
+cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
+cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
+cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
+cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
+cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
+cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
+cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
+cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
+cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
+cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
+cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
+cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
+cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
+dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
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+github.com/STARRY-S/zip v0.2.1 h1:pWBd4tuSGm3wtpoqRZZ2EAwOmcHK6XFf7bU9qcJXyFg=
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+github.com/andybalholm/brotli v1.1.2-0.20250424173009-453214e765f3/go.mod h1:05ib4cKhjx3OQYUY22hTVd34Bc8upXjOLL2rKwwZBoA=
 github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de h1:FxWPpzIjnTlhPwqqXc4/vE0f7GvRjuAsbW+HOIe8KnA=
 github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de/go.mod h1:DCaWoUhZrYW9p1lxo/cm8EmUOOzAPSEZNGF2DK1dJgw=
 github.com/belphemur/go-binwrapper v0.0.0-20240827152605-33977349b1f0 h1:EzKgPYK90TyAOmytK7bvapqlkG/m7KWKK28mOAdQEaM=
 github.com/belphemur/go-binwrapper v0.0.0-20240827152605-33977349b1f0/go.mod h1:s2Dv+CfgVbNM9ucqvE5qCCC0AkI1PE2OZb7N8PPlOh4=
 github.com/belphemur/go-webpbin/v2 v2.0.0 h1:Do0TTTJ6cS6lgi+R67De+jXRYe+ZOwxFqTiFggyX5p8=
 github.com/belphemur/go-webpbin/v2 v2.0.0/go.mod h1:VIHXZQaIwaIYDn08w0qeJFPj1MuYt5pyJnkQALPYc5g=
-github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
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+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
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+github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
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+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
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 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/dsnet/compress v0.0.2-0.20210315054119-f66993602bf5 h1:iFaUwBSo5Svw6L7HYpRu/0lE3e0BaElwnNO1qkNQxBY=
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 github.com/dsnet/golib v0.0.0-20171103203638-1ea166775780/go.mod h1:Lj+Z9rebOhdfkVLjJ8T6VcRQv3SXugXy999NBtR9aFY=
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-github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ=
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 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
 github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 h1:yAJXTCF9TqKcTiHJAE8dj7HMvPfh66eeA2JYW7eFpSE=
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internal/cbz/cbz_creator.go

@@ -0,0 +1,123 @@
+package cbz
+
+import (
+	"archive/zip"
+	"fmt"
+	"os"
+	"time"
+
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/internal/utils/errs"
+	"github.com/rs/zerolog/log"
+)
+
+func WriteChapterToCBZ(chapter *manga.Chapter, outputFilePath string) error {
+	log.Debug().
+		Str("chapter_file", chapter.FilePath).
+		Str("output_path", outputFilePath).
+		Int("page_count", len(chapter.Pages)).
+		Bool("is_converted", chapter.IsConverted).
+		Msg("Starting CBZ file creation")
+
+	// Create a new ZIP file
+	log.Debug().Str("output_path", outputFilePath).Msg("Creating output CBZ file")
+	zipFile, err := os.Create(outputFilePath)
+	if err != nil {
+		log.Error().Str("output_path", outputFilePath).Err(err).Msg("Failed to create CBZ file")
+		return fmt.Errorf("failed to create .cbz file: %w", err)
+	}
+	defer errs.Capture(&err, zipFile.Close, "failed to close .cbz file")
+
+	// Create a new ZIP writer
+	log.Debug().Str("output_path", outputFilePath).Msg("Creating ZIP writer")
+	zipWriter := zip.NewWriter(zipFile)
+	if err != nil {
+		log.Error().Str("output_path", outputFilePath).Err(err).Msg("Failed to create ZIP writer")
+		return err
+	}
+	defer errs.Capture(&err, zipWriter.Close, "failed to close .cbz writer")
+
+	// Write each page to the ZIP archive
+	log.Debug().Str("output_path", outputFilePath).Int("pages_to_write", len(chapter.Pages)).Msg("Writing pages to CBZ archive")
+	for _, page := range chapter.Pages {
+		// Construct the file name for the page
+		var fileName string
+		if page.IsSplitted {
+			// Use the format page%03d-%02d for split pages
+			fileName = fmt.Sprintf("%04d-%02d%s", page.Index, page.SplitPartIndex, page.Extension)
+		} else {
+			// Use the format page%03d for non-split pages
+			fileName = fmt.Sprintf("%04d%s", page.Index, page.Extension)
+		}
+
+		log.Debug().
+			Str("output_path", outputFilePath).
+			Uint16("page_index", page.Index).
+			Bool("is_splitted", page.IsSplitted).
+			Uint16("split_part", page.SplitPartIndex).
+			Str("filename", fileName).
+			Int("size", len(page.Contents.Bytes())).
+			Msg("Writing page to CBZ archive")
+
+		// Create a new file in the ZIP archive
+		fileWriter, err := zipWriter.CreateHeader(&zip.FileHeader{
+			Name:     fileName,
+			Method:   zip.Store,
+			Modified: time.Now(),
+		})
+		if err != nil {
+			log.Error().Str("output_path", outputFilePath).Str("filename", fileName).Err(err).Msg("Failed to create file in CBZ archive")
+			return fmt.Errorf("failed to create file in .cbz: %w", err)
+		}
+
+		// Write the page contents to the file
+		bytesWritten, err := fileWriter.Write(page.Contents.Bytes())
+		if err != nil {
+			log.Error().Str("output_path", outputFilePath).Str("filename", fileName).Err(err).Msg("Failed to write page contents")
+			return fmt.Errorf("failed to write page contents: %w", err)
+		}
+
+		log.Debug().
+			Str("output_path", outputFilePath).
+			Str("filename", fileName).
+			Int("bytes_written", bytesWritten).
+			Msg("Page written successfully")
+	}
+
+	// Optionally, write the ComicInfo.xml file if present
+	if chapter.ComicInfoXml != "" {
+		log.Debug().Str("output_path", outputFilePath).Int("xml_size", len(chapter.ComicInfoXml)).Msg("Writing ComicInfo.xml to CBZ archive")
+		comicInfoWriter, err := zipWriter.CreateHeader(&zip.FileHeader{
+			Name:     "ComicInfo.xml",
+			Method:   zip.Deflate,
+			Modified: time.Now(),
+		})
+		if err != nil {
+			log.Error().Str("output_path", outputFilePath).Err(err).Msg("Failed to create ComicInfo.xml in CBZ archive")
+			return fmt.Errorf("failed to create ComicInfo.xml in .cbz: %w", err)
+		}
+
+		bytesWritten, err := comicInfoWriter.Write([]byte(chapter.ComicInfoXml))
+		if err != nil {
+			log.Error().Str("output_path", outputFilePath).Err(err).Msg("Failed to write ComicInfo.xml contents")
+			return fmt.Errorf("failed to write ComicInfo.xml contents: %w", err)
+		}
+		log.Debug().Str("output_path", outputFilePath).Int("bytes_written", bytesWritten).Msg("ComicInfo.xml written successfully")
+	} else {
+		log.Debug().Str("output_path", outputFilePath).Msg("No ComicInfo.xml to write")
+	}
+
+	if chapter.IsConverted {
+		convertedString := fmt.Sprintf("%s\nThis chapter has been converted by CBZOptimizer.", chapter.ConvertedTime)
+		log.Debug().Str("output_path", outputFilePath).Str("comment", convertedString).Msg("Setting CBZ comment for converted chapter")
+		err = zipWriter.SetComment(convertedString)
+		if err != nil {
+			log.Error().Str("output_path", outputFilePath).Err(err).Msg("Failed to write CBZ comment")
+			return fmt.Errorf("failed to write comment: %w", err)
+		}
+		log.Debug().Str("output_path", outputFilePath).Msg("CBZ comment set successfully")
+	}
+
+	log.Debug().Str("output_path", outputFilePath).Msg("CBZ file creation completed successfully")
+	return nil
+}

internal/cbz/cbz_creator_test.go

@@ -3,18 +3,23 @@ package cbz
 import (
 	"archive/zip"
 	"bytes"
-	"github.com/belphemur/CBZOptimizer/manga"
+	"fmt"
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/internal/utils/errs"
 	"os"
 	"testing"
 	"time"
 )
 
 func TestWriteChapterToCBZ(t *testing.T) {
+	currentTime := time.Now()
+
 	// Define test cases
 	testCases := []struct {
-		name          string
-		chapter       *manga.Chapter
-		expectedFiles []string
+		name            string
+		chapter         *manga.Chapter
+		expectedFiles   []string
+		expectedComment string
 	}{
 		//test case where there is only one page and ComicInfo and the chapter is converted
 		{
@@ -29,9 +34,10 @@ func TestWriteChapterToCBZ(t *testing.T) {
 				},
 				ComicInfoXml:  "<Series>Boundless Necromancer</Series>",
 				IsConverted:   true,
-				ConvertedTime: time.Now(),
+				ConvertedTime: currentTime,
 			},
-			expectedFiles: []string{"page_0000.jpg", "ComicInfo.xml", "Converted.txt"},
+			expectedFiles:   []string{"0000.jpg", "ComicInfo.xml"},
+			expectedComment: fmt.Sprintf("%s\nThis chapter has been converted by CBZOptimizer.", currentTime),
 		},
 		//test case where there is only one page and no
 		{
@@ -45,7 +51,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 					},
 				},
 			},
-			expectedFiles: []string{"page_0000.jpg"},
+			expectedFiles: []string{"0000.jpg"},
 		},
 		{
 			name: "Multiple pages with ComicInfo",
@@ -64,7 +70,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 				},
 				ComicInfoXml: "<Series>Boundless Necromancer</Series>",
 			},
-			expectedFiles: []string{"page_0000.jpg", "page_0001.jpg", "ComicInfo.xml"},
+			expectedFiles: []string{"0000.jpg", "0001.jpg", "ComicInfo.xml"},
 		},
 		{
 			name: "Split page",
@@ -79,7 +85,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 					},
 				},
 			},
-			expectedFiles: []string{"page_0000-01.jpg"},
+			expectedFiles: []string{"0000-01.jpg"},
 		},
 	}
 
@@ -90,7 +96,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 			if err != nil {
 				t.Fatalf("Failed to create temporary file: %v", err)
 			}
-			defer os.Remove(tempFile.Name())
+			defer errs.CaptureGeneric(&err, os.Remove, tempFile.Name(), "failed to remove temporary file")
 
 			// Write the chapter to the .cbz file
 			err = WriteChapterToCBZ(tc.chapter, tempFile.Name())
@@ -103,7 +109,7 @@ func TestWriteChapterToCBZ(t *testing.T) {
 			if err != nil {
 				t.Fatalf("Failed to open CBZ file: %v", err)
 			}
-			defer r.Close()
+			defer errs.Capture(&err, r.Close, "failed to close CBZ file")
 
 			// Collect the names of the files in the archive
 			var filesInArchive []string
@@ -125,6 +131,10 @@ func TestWriteChapterToCBZ(t *testing.T) {
 				}
 			}
 
+			if tc.expectedComment != "" && r.Comment != tc.expectedComment {
+				t.Errorf("Expected comment %s, but found %s", tc.expectedComment, r.Comment)
+			}
+
 			// Check if there are no unexpected files
 			if len(filesInArchive) != len(tc.expectedFiles) {
 				t.Errorf("Expected %d files, but found %d", len(tc.expectedFiles), len(filesInArchive))

internal/cbz/cbz_loader.go

@@ -0,0 +1,166 @@
+package cbz
+
+import (
+	"archive/zip"
+	"bufio"
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"io/fs"
+	"path/filepath"
+	"strings"
+
+	"github.com/araddon/dateparse"
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/internal/utils/errs"
+	"github.com/mholt/archives"
+	"github.com/rs/zerolog/log"
+)
+
+func LoadChapter(filePath string) (*manga.Chapter, error) {
+	log.Debug().Str("file_path", filePath).Msg("Starting chapter loading")
+
+	ctx := context.Background()
+
+	chapter := &manga.Chapter{
+		FilePath: filePath,
+	}
+
+	// First, try to read the comment using zip.OpenReader for CBZ files
+	if strings.ToLower(filepath.Ext(filePath)) == ".cbz" {
+		log.Debug().Str("file_path", filePath).Msg("Checking CBZ comment for conversion status")
+		r, err := zip.OpenReader(filePath)
+		if err == nil {
+			defer errs.Capture(&err, r.Close, "failed to close zip reader for comment")
+
+			// Check for comment
+			if r.Comment != "" {
+				log.Debug().Str("file_path", filePath).Str("comment", r.Comment).Msg("Found CBZ comment")
+				scanner := bufio.NewScanner(strings.NewReader(r.Comment))
+				if scanner.Scan() {
+					convertedTime := scanner.Text()
+					log.Debug().Str("file_path", filePath).Str("converted_time", convertedTime).Msg("Parsing conversion timestamp")
+					chapter.ConvertedTime, err = dateparse.ParseAny(convertedTime)
+					if err == nil {
+						chapter.IsConverted = true
+						log.Debug().Str("file_path", filePath).Time("converted_time", chapter.ConvertedTime).Msg("Chapter marked as previously converted")
+					} else {
+						log.Debug().Str("file_path", filePath).Err(err).Msg("Failed to parse conversion timestamp")
+					}
+				}
+			} else {
+				log.Debug().Str("file_path", filePath).Msg("No CBZ comment found")
+			}
+		} else {
+			log.Debug().Str("file_path", filePath).Err(err).Msg("Failed to open CBZ file for comment reading")
+		}
+		// Continue even if comment reading fails
+	}
+
+	// Open the archive using archives library for file operations
+	log.Debug().Str("file_path", filePath).Msg("Opening archive file system")
+	fsys, err := archives.FileSystem(ctx, filePath, nil)
+	if err != nil {
+		log.Error().Str("file_path", filePath).Err(err).Msg("Failed to open archive file system")
+		return nil, fmt.Errorf("failed to open archive file: %w", err)
+	}
+
+	// Walk through all files in the filesystem
+	log.Debug().Str("file_path", filePath).Msg("Starting filesystem walk")
+	err = fs.WalkDir(fsys, ".", func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if d.IsDir() {
+			return nil
+		}
+
+		return func() error {
+			// Open the file
+			file, err := fsys.Open(path)
+			if err != nil {
+				return fmt.Errorf("failed to open file %s: %w", path, err)
+			}
+			defer errs.Capture(&err, file.Close, fmt.Sprintf("failed to close file %s", path))
+
+			// Determine the file extension
+			ext := strings.ToLower(filepath.Ext(path))
+			fileName := strings.ToLower(filepath.Base(path))
+
+			if ext == ".xml" && fileName == "comicinfo.xml" {
+				log.Debug().Str("file_path", filePath).Str("archive_file", path).Msg("Found ComicInfo.xml")
+				// Read the ComicInfo.xml file content
+				xmlContent, err := io.ReadAll(file)
+				if err != nil {
+					log.Error().Str("file_path", filePath).Str("archive_file", path).Err(err).Msg("Failed to read ComicInfo.xml")
+					return fmt.Errorf("failed to read ComicInfo.xml content: %w", err)
+				}
+				chapter.ComicInfoXml = string(xmlContent)
+				log.Debug().Str("file_path", filePath).Int("xml_size", len(xmlContent)).Msg("ComicInfo.xml loaded")
+			} else if !chapter.IsConverted && ext == ".txt" && fileName == "converted.txt" {
+				log.Debug().Str("file_path", filePath).Str("archive_file", path).Msg("Found converted.txt")
+				textContent, err := io.ReadAll(file)
+				if err != nil {
+					log.Error().Str("file_path", filePath).Str("archive_file", path).Err(err).Msg("Failed to read converted.txt")
+					return fmt.Errorf("failed to read converted.txt content: %w", err)
+				}
+				scanner := bufio.NewScanner(bytes.NewReader(textContent))
+				if scanner.Scan() {
+					convertedTime := scanner.Text()
+					log.Debug().Str("file_path", filePath).Str("converted_time", convertedTime).Msg("Parsing converted.txt timestamp")
+					chapter.ConvertedTime, err = dateparse.ParseAny(convertedTime)
+					if err != nil {
+						log.Error().Str("file_path", filePath).Err(err).Msg("Failed to parse converted time from converted.txt")
+						return fmt.Errorf("failed to parse converted time: %w", err)
+					}
+					chapter.IsConverted = true
+					log.Debug().Str("file_path", filePath).Time("converted_time", chapter.ConvertedTime).Msg("Chapter marked as converted from converted.txt")
+				}
+			} else {
+				// Read the file contents for page
+				log.Debug().Str("file_path", filePath).Str("archive_file", path).Str("extension", ext).Msg("Processing page file")
+				buf := new(bytes.Buffer)
+				bytesCopied, err := io.Copy(buf, file)
+				if err != nil {
+					log.Error().Str("file_path", filePath).Str("archive_file", path).Err(err).Msg("Failed to read page file contents")
+					return fmt.Errorf("failed to read file contents: %w", err)
+				}
+
+				// Create a new Page object
+				page := &manga.Page{
+					Index:      uint16(len(chapter.Pages)), // Simple index based on order
+					Extension:  ext,
+					Size:       uint64(buf.Len()),
+					Contents:   buf,
+					IsSplitted: false,
+				}
+
+				// Add the page to the chapter
+				chapter.Pages = append(chapter.Pages, page)
+				log.Debug().
+					Str("file_path", filePath).
+					Str("archive_file", path).
+					Uint16("page_index", page.Index).
+					Int64("bytes_read", bytesCopied).
+					Msg("Page loaded successfully")
+			}
+			return nil
+		}()
+	})
+
+	if err != nil {
+		log.Error().Str("file_path", filePath).Err(err).Msg("Failed during filesystem walk")
+		return nil, err
+	}
+
+	log.Debug().
+		Str("file_path", filePath).
+		Int("pages_loaded", len(chapter.Pages)).
+		Bool("is_converted", chapter.IsConverted).
+		Bool("has_comic_info", chapter.ComicInfoXml != "").
+		Msg("Chapter loading completed successfully")
+
+	return chapter, nil
+}

internal/cbz/cbz_loader_test.go

@@ -16,15 +16,22 @@ func TestLoadChapter(t *testing.T) {
 
 	testCases := []testCase{
 		{
-			name:               "Original Chapter",
-			filePath:           "../testdata/Chapter 1.cbz",
+			name:               "Original Chapter CBZ",
+			filePath:           "../../testdata/Chapter 1.cbz",
+			expectedPages:      16,
+			expectedSeries:     "<Series>Boundless Necromancer</Series>",
+			expectedConversion: false,
+		},
+		{
+			name:               "Original Chapter CBR",
+			filePath:           "../../testdata/Chapter 1.cbr",
 			expectedPages:      16,
 			expectedSeries:     "<Series>Boundless Necromancer</Series>",
 			expectedConversion: false,
 		},
 		{
 			name:               "Converted Chapter",
-			filePath:           "../testdata/Chapter 1_converted.cbz",
+			filePath:           "../../testdata/Chapter 10_converted.cbz",
 			expectedPages:      107,
 			expectedSeries:     "<Series>Boundless Necromancer</Series>",
 			expectedConversion: true,

internal/manga/page_container.go

@@ -0,0 +1,32 @@
+package manga
+
+import (
+	"bytes"
+	"image"
+)
+
+// PageContainer is a struct that holds a manga page, its image, and the image format.
+type PageContainer struct {
+	// Page is a pointer to a manga page object.
+	Page *Page
+	// Image is the decoded image of the manga page.
+	Image image.Image
+	// Format is a string representing the format of the image (e.g., "png", "jpeg", "webp").
+	Format string
+	// IsToBeConverted is a boolean flag indicating whether the image needs to be converted to another format.
+	IsToBeConverted bool
+	// HasBeenConverted is a boolean flag indicating whether the image has been converted to another format.
+	HasBeenConverted bool
+}
+
+func NewContainer(Page *Page, img image.Image, format string, isToBeConverted bool) *PageContainer {
+	return &PageContainer{Page: Page, Image: img, Format: format, IsToBeConverted: isToBeConverted, HasBeenConverted: false}
+}
+
+// SetConverted sets the converted image, its extension, and its size in the PageContainer.
+func (pc *PageContainer) SetConverted(converted *bytes.Buffer, extension string) {
+	pc.Page.Contents = converted
+	pc.Page.Extension = extension
+	pc.Page.Size = uint64(converted.Len())
+	pc.HasBeenConverted = true
+}

internal/utils/errs/errors_defer.go

@@ -0,0 +1,25 @@
+package errs
+
+import (
+	"errors"
+	"fmt"
+)
+
+// Capture runs errFunc and assigns the error, if any, to *errPtr. Preserves the
+// original error by wrapping with errors.Join if the errFunc err is non-nil.
+func Capture(errPtr *error, errFunc func() error, msg string) {
+	err := errFunc()
+	if err == nil {
+		return
+	}
+	*errPtr = errors.Join(*errPtr, fmt.Errorf("%s: %w", msg, err))
+}
+
+// CaptureGeneric runs errFunc with a generic type K and assigns the error, if any, to *errPtr.
+func CaptureGeneric[K any](errPtr *error, errFunc func(value K) error, value K, msg string) {
+	err := errFunc(value)
+	if err == nil {
+		return
+	}
+	*errPtr = errors.Join(*errPtr, fmt.Errorf("%s: %w", msg, err))
+}

internal/utils/errs/errors_defer_test.go

@@ -0,0 +1,122 @@
+package errs
+
+import (
+	"errors"
+	"fmt"
+	"testing"
+)
+
+func TestCapture(t *testing.T) {
+	tests := []struct {
+		name     string
+		initial  error
+		errFunc  func() error
+		msg      string
+		expected string
+	}{
+		{
+			name:     "No error from errFunc",
+			initial:  nil,
+			errFunc:  func() error { return nil },
+			msg:      "test message",
+			expected: "",
+		},
+		{
+			name:     "Error from errFunc with no initial error",
+			initial:  nil,
+			errFunc:  func() error { return errors.New("error from func") },
+			msg:      "test message",
+			expected: "test message: error from func",
+		},
+		{
+			name:     "Error from errFunc with initial error",
+			initial:  errors.New("initial error"),
+			errFunc:  func() error { return errors.New("error from func") },
+			msg:      "test message",
+			expected: "initial error\ntest message: error from func",
+		},
+		{
+			name:     "Error from errFunc with initial wrapped error",
+			initial:  fmt.Errorf("wrapped error: %w", errors.New("initial error")),
+			errFunc:  func() error { return errors.New("error from func") },
+			msg:      "test message",
+			expected: "wrapped error: initial error\ntest message: error from func",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var err error = tt.initial
+			Capture(&err, tt.errFunc, tt.msg)
+			if err != nil && err.Error() != tt.expected {
+				t.Errorf("expected %q, got %q", tt.expected, err.Error())
+			} else if err == nil && tt.expected != "" {
+				t.Errorf("expected %q, got nil", tt.expected)
+			}
+		})
+	}
+}
+
+func TestCaptureGeneric(t *testing.T) {
+	tests := []struct {
+		name     string
+		initial  error
+		errFunc  func(int) error
+		value    int
+		msg      string
+		expected string
+	}{
+		{
+			name:     "No error from errFunc",
+			initial:  nil,
+			errFunc:  func(value int) error { return nil },
+			value:    0,
+			msg:      "test message",
+			expected: "",
+		},
+		{
+			name:     "Error from errFunc with no initial error",
+			initial:  nil,
+			errFunc:  func(value int) error { return errors.New("error from func") },
+			value:    0,
+			msg:      "test message",
+			expected: "test message: error from func",
+		},
+		{
+			name:     "Error from errFunc with initial error",
+			initial:  errors.New("initial error"),
+			errFunc:  func(value int) error { return errors.New("error from func") },
+			value:    0,
+			msg:      "test message",
+			expected: "initial error\ntest message: error from func",
+		},
+		{
+			name:     "Error from errFunc with initial wrapped error",
+			initial:  fmt.Errorf("wrapped error: %w", errors.New("initial error")),
+			errFunc:  func(value int) error { return errors.New("error from func") },
+			value:    0,
+			msg:      "test message",
+			expected: "wrapped error: initial error\ntest message: error from func",
+		},
+		{
+			name:     "Error from errFunc with initial wrapped error and value",
+			initial:  fmt.Errorf("wrapped error: %w", errors.New("initial error")),
+			errFunc:  func(value int) error { return fmt.Errorf("hello error:%d", value) },
+			value:    1,
+			msg:      "test message",
+			expected: "wrapped error: initial error\ntest message: hello error:1",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var err error = tt.initial
+			CaptureGeneric(&err, tt.errFunc, tt.value, tt.msg)
+			if err != nil && err.Error() != tt.expected {
+				t.Errorf("expected %q, got %q", tt.expected, err.Error())
+			} else if err == nil && tt.expected != "" {
+				t.Errorf("expected %q, got nil", tt.expected)
+			}
+		})
+	}
+}

internal/utils/optimize.go

@@ -0,0 +1,170 @@
+package utils
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/belphemur/CBZOptimizer/v2/internal/cbz"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter"
+	errors2 "github.com/belphemur/CBZOptimizer/v2/pkg/converter/errors"
+	"github.com/rs/zerolog/log"
+)
+
+type OptimizeOptions struct {
+	ChapterConverter converter.Converter
+	Path             string
+	Quality          uint8
+	Override         bool
+	Split            bool
+	Timeout          time.Duration
+}
+
+// Optimize optimizes a CBZ/CBR file using the specified converter.
+func Optimize(options *OptimizeOptions) error {
+	log.Info().Str("file", options.Path).Msg("Processing file")
+	log.Debug().
+		Str("file", options.Path).
+		Uint8("quality", options.Quality).
+		Bool("override", options.Override).
+		Bool("split", options.Split).
+		Msg("Optimization parameters")
+
+	// Load the chapter
+	log.Debug().Str("file", options.Path).Msg("Loading chapter")
+	chapter, err := cbz.LoadChapter(options.Path)
+	if err != nil {
+		log.Error().Str("file", options.Path).Err(err).Msg("Failed to load chapter")
+		return fmt.Errorf("failed to load chapter: %v", err)
+	}
+	log.Debug().
+		Str("file", options.Path).
+		Int("pages", len(chapter.Pages)).
+		Bool("converted", chapter.IsConverted).
+		Msg("Chapter loaded successfully")
+
+	if chapter.IsConverted {
+		log.Info().Str("file", options.Path).Msg("Chapter already converted")
+		return nil
+	}
+
+	// Convert the chapter
+	log.Debug().
+		Str("file", chapter.FilePath).
+		Int("pages", len(chapter.Pages)).
+		Uint8("quality", options.Quality).
+		Bool("split", options.Split).
+		Msg("Starting chapter conversion")
+
+	var ctx context.Context
+	if options.Timeout > 0 {
+		var cancel context.CancelFunc
+		ctx, cancel = context.WithTimeout(context.Background(), options.Timeout)
+		defer cancel()
+		log.Debug().Str("file", chapter.FilePath).Dur("timeout", options.Timeout).Msg("Applying timeout to chapter conversion")
+	} else {
+		ctx = context.Background()
+	}
+
+	convertedChapter, err := options.ChapterConverter.ConvertChapter(ctx, chapter, options.Quality, options.Split, func(msg string, current uint32, total uint32) {
+		if current%10 == 0 || current == total {
+			log.Info().Str("file", chapter.FilePath).Uint32("current", current).Uint32("total", total).Msg("Converting")
+		} else {
+			log.Debug().Str("file", chapter.FilePath).Uint32("current", current).Uint32("total", total).Msg("Converting page")
+		}
+	})
+	if err != nil {
+		var pageIgnoredError *errors2.PageIgnoredError
+		if errors.As(err, &pageIgnoredError) {
+			log.Debug().Str("file", chapter.FilePath).Err(err).Msg("Page conversion error (non-fatal)")
+		} else {
+			log.Error().Str("file", chapter.FilePath).Err(err).Msg("Chapter conversion failed")
+			return fmt.Errorf("failed to convert chapter: %v", err)
+		}
+	}
+	if convertedChapter == nil {
+		log.Error().Str("file", chapter.FilePath).Msg("Conversion returned nil chapter")
+		return fmt.Errorf("failed to convert chapter")
+	}
+
+	log.Debug().
+		Str("file", chapter.FilePath).
+		Int("original_pages", len(chapter.Pages)).
+		Int("converted_pages", len(convertedChapter.Pages)).
+		Msg("Chapter conversion completed")
+
+	convertedChapter.SetConverted()
+
+	// Determine output path and handle CBR override logic
+	log.Debug().
+		Str("input_path", options.Path).
+		Bool("override", options.Override).
+		Msg("Determining output path")
+
+	outputPath := options.Path
+	originalPath := options.Path
+	isCbrOverride := false
+
+	if options.Override {
+		// For override mode, check if it's a CBR file that needs to be converted to CBZ
+		pathLower := strings.ToLower(options.Path)
+		if strings.HasSuffix(pathLower, ".cbr") {
+			// Convert CBR to CBZ: change extension and mark for deletion
+			outputPath = strings.TrimSuffix(options.Path, filepath.Ext(options.Path)) + ".cbz"
+			isCbrOverride = true
+			log.Debug().
+				Str("original_path", originalPath).
+				Str("output_path", outputPath).
+				Msg("CBR to CBZ conversion: will delete original after conversion")
+		} else {
+			log.Debug().
+				Str("original_path", originalPath).
+				Str("output_path", outputPath).
+				Msg("CBZ override mode: will overwrite original file")
+		}
+	} else {
+		// Handle both .cbz and .cbr files - strip the extension and add _converted.cbz
+		pathLower := strings.ToLower(options.Path)
+		if strings.HasSuffix(pathLower, ".cbz") {
+			outputPath = strings.TrimSuffix(options.Path, ".cbz") + "_converted.cbz"
+		} else if strings.HasSuffix(pathLower, ".cbr") {
+			outputPath = strings.TrimSuffix(options.Path, ".cbr") + "_converted.cbz"
+		} else {
+			// Fallback for other extensions - just add _converted.cbz
+			outputPath = options.Path + "_converted.cbz"
+		}
+		log.Debug().
+			Str("original_path", originalPath).
+			Str("output_path", outputPath).
+			Msg("Non-override mode: creating converted file alongside original")
+	}
+
+	// Write the converted chapter to CBZ file
+	log.Debug().Str("output_path", outputPath).Msg("Writing converted chapter to CBZ file")
+	err = cbz.WriteChapterToCBZ(convertedChapter, outputPath)
+	if err != nil {
+		log.Error().Str("output_path", outputPath).Err(err).Msg("Failed to write converted chapter")
+		return fmt.Errorf("failed to write converted chapter: %v", err)
+	}
+	log.Debug().Str("output_path", outputPath).Msg("Successfully wrote converted chapter")
+
+	// If we're overriding a CBR file, delete the original CBR after successful write
+	if isCbrOverride {
+		log.Debug().Str("file", originalPath).Msg("Attempting to delete original CBR file")
+		err = os.Remove(originalPath)
+		if err != nil {
+			// Log the error but don't fail the operation since conversion succeeded
+			log.Warn().Str("file", originalPath).Err(err).Msg("Failed to delete original CBR file")
+		} else {
+			log.Info().Str("file", originalPath).Msg("Deleted original CBR file")
+		}
+	}
+
+	log.Info().Str("output", outputPath).Msg("Converted file written")
+	return nil
+
+}

internal/utils/optimize_test.go

@@ -0,0 +1,424 @@
+package utils
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+
+	"github.com/belphemur/CBZOptimizer/v2/internal/cbz"
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/internal/utils/errs"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/constant"
+)
+
+// MockConverter for testing
+type MockConverter struct {
+	shouldFail bool
+}
+
+func (m *MockConverter) ConvertChapter(ctx context.Context, chapter *manga.Chapter, quality uint8, split bool, progress func(message string, current uint32, total uint32)) (*manga.Chapter, error) {
+	if m.shouldFail {
+		return nil, &MockError{message: "mock conversion error"}
+	}
+
+	// Check if context is already cancelled
+	select {
+	case <-ctx.Done():
+		return nil, ctx.Err()
+	default:
+	}
+
+	// Simulate some work that can be interrupted by context cancellation
+	for i := 0; i < len(chapter.Pages); i++ {
+		select {
+		case <-ctx.Done():
+			return nil, ctx.Err()
+		default:
+			// Simulate processing time
+			time.Sleep(100 * time.Microsecond)
+			if progress != nil {
+				progress(fmt.Sprintf("Converting page %d/%d", i+1, len(chapter.Pages)), uint32(i+1), uint32(len(chapter.Pages)))
+			}
+		}
+	}
+
+	// Create a copy of the chapter to simulate conversion
+	converted := &manga.Chapter{
+		FilePath:      chapter.FilePath,
+		Pages:         chapter.Pages,
+		ComicInfoXml:  chapter.ComicInfoXml,
+		IsConverted:   true,
+		ConvertedTime: time.Now(),
+	}
+	return converted, nil
+}
+
+func (m *MockConverter) Format() constant.ConversionFormat {
+	return constant.WebP
+}
+
+func (m *MockConverter) PrepareConverter() error {
+	if m.shouldFail {
+		return &MockError{message: "mock prepare error"}
+	}
+	return nil
+}
+
+type MockError struct {
+	message string
+}
+
+func (e *MockError) Error() string {
+	return e.message
+}
+
+func TestOptimize(t *testing.T) {
+	// Create temporary directory for tests
+	tempDir, err := os.MkdirTemp("", "test_optimize")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer errs.CaptureGeneric(&err, os.RemoveAll, tempDir, "failed to remove temporary directory")
+
+	// Copy test files
+	testdataDir := "../../testdata"
+	if _, err := os.Stat(testdataDir); os.IsNotExist(err) {
+		t.Skip("testdata directory not found, skipping tests")
+	}
+
+	// Copy sample files
+	var cbzFile, cbrFile string
+	err = filepath.Walk(testdataDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() {
+			fileName := strings.ToLower(info.Name())
+			if strings.HasSuffix(fileName, ".cbz") && !strings.Contains(fileName, "converted") {
+				destPath := filepath.Join(tempDir, "test.cbz")
+				data, err := os.ReadFile(path)
+				if err != nil {
+					return err
+				}
+				err = os.WriteFile(destPath, data, info.Mode())
+				if err != nil {
+					return err
+				}
+				cbzFile = destPath
+			} else if strings.HasSuffix(fileName, ".cbr") {
+				destPath := filepath.Join(tempDir, "test.cbr")
+				data, err := os.ReadFile(path)
+				if err != nil {
+					return err
+				}
+				err = os.WriteFile(destPath, data, info.Mode())
+				if err != nil {
+					return err
+				}
+				cbrFile = destPath
+			}
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if cbzFile == "" {
+		t.Skip("No CBZ test file found")
+	}
+
+	// Create a CBR file by copying the CBZ file if no CBR exists
+	if cbrFile == "" {
+		cbrFile = filepath.Join(tempDir, "test.cbr")
+		data, err := os.ReadFile(cbzFile)
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = os.WriteFile(cbrFile, data, 0644)
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	tests := []struct {
+		name           string
+		inputFile      string
+		override       bool
+		expectedOutput string
+		shouldDelete   bool
+		expectError    bool
+		mockFail       bool
+	}{
+		{
+			name:           "CBZ file without override",
+			inputFile:      cbzFile,
+			override:       false,
+			expectedOutput: strings.TrimSuffix(cbzFile, ".cbz") + "_converted.cbz",
+			shouldDelete:   false,
+			expectError:    false,
+		},
+		{
+			name:           "CBZ file with override",
+			inputFile:      cbzFile,
+			override:       true,
+			expectedOutput: cbzFile,
+			shouldDelete:   false,
+			expectError:    false,
+		},
+		{
+			name:           "CBR file without override",
+			inputFile:      cbrFile,
+			override:       false,
+			expectedOutput: strings.TrimSuffix(cbrFile, ".cbr") + "_converted.cbz",
+			shouldDelete:   false,
+			expectError:    false,
+		},
+		{
+			name:           "CBR file with override",
+			inputFile:      cbrFile,
+			override:       true,
+			expectedOutput: strings.TrimSuffix(cbrFile, ".cbr") + ".cbz",
+			shouldDelete:   true,
+			expectError:    false,
+		},
+		{
+			name:        "Converter failure",
+			inputFile:   cbzFile,
+			override:    false,
+			expectError: true,
+			mockFail:    true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Create a copy of the input file for this test
+			testFile := filepath.Join(tempDir, tt.name+"_"+filepath.Base(tt.inputFile))
+			data, err := os.ReadFile(tt.inputFile)
+			if err != nil {
+				t.Fatal(err)
+			}
+			err = os.WriteFile(testFile, data, 0644)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			// Setup options
+			options := &OptimizeOptions{
+				ChapterConverter: &MockConverter{shouldFail: tt.mockFail},
+				Path:             testFile,
+				Quality:          85,
+				Override:         tt.override,
+				Split:            false,
+				Timeout:          0,
+			}
+
+			// Run optimization
+			err = Optimize(options)
+
+			if tt.expectError {
+				if err == nil {
+					t.Error("Expected error but got none")
+				}
+				return
+			}
+
+			if err != nil {
+				t.Fatalf("Unexpected error: %v", err)
+			}
+
+			// Determine expected output path for this test
+			expectedOutput := tt.expectedOutput
+			if tt.override && strings.HasSuffix(strings.ToLower(testFile), ".cbr") {
+				expectedOutput = strings.TrimSuffix(testFile, filepath.Ext(testFile)) + ".cbz"
+			} else if !tt.override {
+				if strings.HasSuffix(strings.ToLower(testFile), ".cbz") {
+					expectedOutput = strings.TrimSuffix(testFile, ".cbz") + "_converted.cbz"
+				} else if strings.HasSuffix(strings.ToLower(testFile), ".cbr") {
+					expectedOutput = strings.TrimSuffix(testFile, ".cbr") + "_converted.cbz"
+				}
+			} else {
+				expectedOutput = testFile
+			}
+
+			// Verify output file exists
+			if _, err := os.Stat(expectedOutput); os.IsNotExist(err) {
+				t.Errorf("Expected output file not found: %s", expectedOutput)
+			}
+
+			// Verify output is a valid CBZ
+			chapter, err := cbz.LoadChapter(expectedOutput)
+			if err != nil {
+				t.Errorf("Failed to load converted chapter: %v", err)
+			}
+
+			if !chapter.IsConverted {
+				t.Error("Chapter is not marked as converted")
+			}
+
+			// Verify original file deletion for CBR override
+			if tt.shouldDelete {
+				if _, err := os.Stat(testFile); !os.IsNotExist(err) {
+					t.Error("Original CBR file should have been deleted but still exists")
+				}
+			} else {
+				// Verify original file still exists (unless it's the same as output)
+				if testFile != expectedOutput {
+					if _, err := os.Stat(testFile); os.IsNotExist(err) {
+						t.Error("Original file should not have been deleted")
+					}
+				}
+			}
+
+			// Clean up output file
+			os.Remove(expectedOutput)
+		})
+	}
+}
+
+func TestOptimize_AlreadyConverted(t *testing.T) {
+	// Create temporary directory
+	tempDir, err := os.MkdirTemp("", "test_optimize_converted")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer errs.CaptureGeneric(&err, os.RemoveAll, tempDir, "failed to remove temporary directory")
+
+	// Use a converted test file
+	testdataDir := "../../testdata"
+	if _, err := os.Stat(testdataDir); os.IsNotExist(err) {
+		t.Skip("testdata directory not found, skipping tests")
+	}
+
+	var convertedFile string
+	err = filepath.Walk(testdataDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && strings.Contains(strings.ToLower(info.Name()), "converted") {
+			destPath := filepath.Join(tempDir, info.Name())
+			data, err := os.ReadFile(path)
+			if err != nil {
+				return err
+			}
+			err = os.WriteFile(destPath, data, info.Mode())
+			if err != nil {
+				return err
+			}
+			convertedFile = destPath
+			return filepath.SkipDir
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if convertedFile == "" {
+		t.Skip("No converted test file found")
+	}
+
+	options := &OptimizeOptions{
+		ChapterConverter: &MockConverter{},
+		Path:             convertedFile,
+		Quality:          85,
+		Override:         false,
+		Split:            false,
+		Timeout:          0,
+	}
+
+	err = Optimize(options)
+	if err != nil {
+		t.Fatalf("Unexpected error: %v", err)
+	}
+
+	// Should not create a new file since it's already converted
+	expectedOutput := strings.TrimSuffix(convertedFile, ".cbz") + "_converted.cbz"
+	if _, err := os.Stat(expectedOutput); !os.IsNotExist(err) {
+		t.Error("Should not have created a new converted file for already converted chapter")
+	}
+}
+
+func TestOptimize_InvalidFile(t *testing.T) {
+	options := &OptimizeOptions{
+		ChapterConverter: &MockConverter{},
+		Path:             "/nonexistent/file.cbz",
+		Quality:          85,
+		Override:         false,
+		Split:            false,
+		Timeout:          0,
+	}
+
+	err := Optimize(options)
+	if err == nil {
+		t.Error("Expected error for nonexistent file")
+	}
+}
+
+func TestOptimize_Timeout(t *testing.T) {
+	// Create temporary directory
+	tempDir, err := os.MkdirTemp("", "test_optimize_timeout")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer errs.CaptureGeneric(&err, os.RemoveAll, tempDir, "failed to remove temporary directory")
+
+	// Copy test files
+	testdataDir := "../../testdata"
+	if _, err := os.Stat(testdataDir); os.IsNotExist(err) {
+		t.Skip("testdata directory not found, skipping tests")
+	}
+
+	var cbzFile string
+	err = filepath.Walk(testdataDir, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && strings.HasSuffix(strings.ToLower(info.Name()), ".cbz") && !strings.Contains(info.Name(), "converted") {
+			destPath := filepath.Join(tempDir, "test.cbz")
+			data, err := os.ReadFile(path)
+			if err != nil {
+				return err
+			}
+			err = os.WriteFile(destPath, data, info.Mode())
+			if err != nil {
+				return err
+			}
+			cbzFile = destPath
+			return filepath.SkipDir
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if cbzFile == "" {
+		t.Skip("No CBZ test file found")
+	}
+
+	// Test with short timeout (500 microseconds) to force timeout during conversion
+	options := &OptimizeOptions{
+		ChapterConverter: &MockConverter{},
+		Path:             cbzFile,
+		Quality:          85,
+		Override:         false,
+		Split:            false,
+		Timeout:          500 * time.Microsecond, // 500 microseconds - should timeout during page processing
+	}
+
+	err = Optimize(options)
+	if err == nil {
+		t.Error("Expected timeout error but got none")
+	}
+
+	// Check that the error contains timeout information
+	if !strings.Contains(err.Error(), "context deadline exceeded") {
+		t.Errorf("Expected timeout error message, got: %v", err)
+	}
+}

main.go

@@ -1,16 +0,0 @@
-package main
-
-import (
-	"github.com/belphemur/CBZOptimizer/cmd"
-)
-
-var (
-	version = "dev"
-	commit  = "none"
-	date    = "unknown"
-)
-
-func main() {
-	cmd.SetVersionInfo(version, commit, date)
-	cmd.Execute()
-}

manga/page_container.go

@@ -1,17 +0,0 @@
-package manga
-
-import "image"
-
-// PageContainer is a struct that holds a manga page, its image, and the image format.
-type PageContainer struct {
-	// Page is a pointer to a manga page object.
-	Page *Page
-	// Image is the decoded image of the manga page.
-	Image image.Image
-	// Format is a string representing the format of the image (e.g., "png", "jpeg", "webp").
-	Format string
-}
-
-func NewContainer(Page *Page, img image.Image, format string) *PageContainer {
-	return &PageContainer{Page: Page, Image: img, Format: format}
-}

meta/version.go

@@ -1,5 +0,0 @@
-package meta
-
-var Version = "v0.0.0"
-var Commit = ""
-var Date = ""

pkg/converter/converter.go

@@ -1,18 +1,23 @@
 package converter
 
 import (
+	"context"
 	"fmt"
-	"github.com/belphemur/CBZOptimizer/converter/constant"
-	"github.com/belphemur/CBZOptimizer/converter/webp"
-	"github.com/belphemur/CBZOptimizer/manga"
-	"github.com/samber/lo"
 	"strings"
+
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/constant"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/webp"
+	"github.com/samber/lo"
 )
 
 type Converter interface {
 	// Format of the converter
 	Format() (format constant.ConversionFormat)
-	ConvertChapter(chapter *manga.Chapter, quality uint8, progress func(string)) (*manga.Chapter, error)
+	// ConvertChapter converts a manga chapter to the specified format.
+	//
+	// Returns partial success where some pages are converted and some are not.
+	ConvertChapter(ctx context.Context, chapter *manga.Chapter, quality uint8, split bool, progress func(message string, current uint32, total uint32)) (*manga.Chapter, error)
 	PrepareConverter() error
 }
 

pkg/converter/converter_test.go

@@ -0,0 +1,236 @@
+package converter
+
+import (
+	"bytes"
+	"context"
+	"image"
+	"image/jpeg"
+	"os"
+	"testing"
+
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/internal/utils/errs"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/constant"
+	"golang.org/x/exp/slices"
+)
+
+func TestConvertChapter(t *testing.T) {
+
+	testCases := []struct {
+		name                 string
+		genTestChapter       func(path string) (*manga.Chapter, error)
+		split                bool
+		expectFailure        []constant.ConversionFormat
+		expectPartialSuccess []constant.ConversionFormat
+	}{
+		{
+			name:                 "All split pages",
+			genTestChapter:       genHugePage,
+			split:                true,
+			expectFailure:        []constant.ConversionFormat{},
+			expectPartialSuccess: []constant.ConversionFormat{},
+		},
+		{
+			name:                 "Big Pages, no split",
+			genTestChapter:       genHugePage,
+			split:                false,
+			expectFailure:        []constant.ConversionFormat{constant.WebP},
+			expectPartialSuccess: []constant.ConversionFormat{},
+		},
+		{
+			name:                 "No split pages",
+			genTestChapter:       genSmallPages,
+			split:                false,
+			expectFailure:        []constant.ConversionFormat{},
+			expectPartialSuccess: []constant.ConversionFormat{},
+		},
+		{
+			name:                 "Mix of split and no split pages",
+			genTestChapter:       genMixSmallBig,
+			split:                true,
+			expectFailure:        []constant.ConversionFormat{},
+			expectPartialSuccess: []constant.ConversionFormat{},
+		},
+		{
+			name:                 "Mix of Huge and small page",
+			genTestChapter:       genMixSmallHuge,
+			split:                false,
+			expectFailure:        []constant.ConversionFormat{},
+			expectPartialSuccess: []constant.ConversionFormat{constant.WebP},
+		},
+	}
+	// Load test genTestChapter from testdata
+	temp, err := os.CreateTemp("", "test_chapter_*.cbz")
+	if err != nil {
+		t.Fatalf("failed to create temporary file: %v", err)
+
+	}
+	defer errs.CaptureGeneric(&err, os.Remove, temp.Name(), "failed to remove temporary file")
+	for _, converter := range Available() {
+		converter, err := Get(converter)
+		if err != nil {
+			t.Fatalf("failed to get converter: %v", err)
+		}
+		t.Run(converter.Format().String(), func(t *testing.T) {
+			for _, tc := range testCases {
+				t.Run(tc.name, func(t *testing.T) {
+					chapter, err := tc.genTestChapter(temp.Name())
+					if err != nil {
+						t.Fatalf("failed to load test genTestChapter: %v", err)
+					}
+
+					quality := uint8(80)
+
+					progress := func(msg string, current uint32, total uint32) {
+						t.Log(msg)
+					}
+
+					convertedChapter, err := converter.ConvertChapter(context.Background(), chapter, quality, tc.split, progress)
+					if err != nil {
+						if convertedChapter != nil && slices.Contains(tc.expectPartialSuccess, converter.Format()) {
+							t.Logf("Partial success to convert genTestChapter: %v", err)
+							return
+						}
+						if slices.Contains(tc.expectFailure, converter.Format()) {
+							t.Logf("Expected failure to convert genTestChapter: %v", err)
+							return
+						}
+						t.Fatalf("failed to convert genTestChapter: %v", err)
+					} else if slices.Contains(tc.expectFailure, converter.Format()) {
+						t.Fatalf("expected failure to convert genTestChapter didn't happen")
+					}
+
+					if len(convertedChapter.Pages) == 0 {
+						t.Fatalf("no pages were converted")
+					}
+
+					if len(convertedChapter.Pages) != len(chapter.Pages) {
+						t.Fatalf("converted chapter has different number of pages")
+					}
+
+					for _, page := range convertedChapter.Pages {
+						if page.Extension != ".webp" {
+							t.Errorf("page %d was not converted to webp format", page.Index)
+						}
+					}
+				})
+			}
+		})
+	}
+}
+
+func genHugePage(path string) (*manga.Chapter, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer errs.Capture(&err, file.Close, "failed to close file")
+
+	var pages []*manga.Page
+	for i := 0; i < 1; i++ { // Assuming there are 5 pages for the test
+		img := image.NewRGBA(image.Rect(0, 0, 1, 17000))
+		buf := new(bytes.Buffer)
+		err := jpeg.Encode(buf, img, nil)
+		if err != nil {
+			return nil, err
+		}
+		page := &manga.Page{
+			Index:     uint16(i),
+			Contents:  buf,
+			Extension: ".jpg",
+		}
+		pages = append(pages, page)
+	}
+
+	return &manga.Chapter{
+		FilePath: path,
+		Pages:    pages,
+	}, nil
+}
+
+func genSmallPages(path string) (*manga.Chapter, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer errs.Capture(&err, file.Close, "failed to close file")
+
+	var pages []*manga.Page
+	for i := 0; i < 5; i++ { // Assuming there are 5 pages for the test
+		img := image.NewRGBA(image.Rect(0, 0, 300, 1000))
+		buf := new(bytes.Buffer)
+		err := jpeg.Encode(buf, img, nil)
+		if err != nil {
+			return nil, err
+		}
+		page := &manga.Page{
+			Index:     uint16(i),
+			Contents:  buf,
+			Extension: ".jpg",
+		}
+		pages = append(pages, page)
+	}
+
+	return &manga.Chapter{
+		FilePath: path,
+		Pages:    pages,
+	}, nil
+}
+
+func genMixSmallBig(path string) (*manga.Chapter, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer errs.Capture(&err, file.Close, "failed to close file")
+
+	var pages []*manga.Page
+	for i := 0; i < 5; i++ { // Assuming there are 5 pages for the test
+		img := image.NewRGBA(image.Rect(0, 0, 300, 1000*(i+1)))
+		buf := new(bytes.Buffer)
+		err := jpeg.Encode(buf, img, nil)
+		if err != nil {
+			return nil, err
+		}
+		page := &manga.Page{
+			Index:     uint16(i),
+			Contents:  buf,
+			Extension: ".jpg",
+		}
+		pages = append(pages, page)
+	}
+
+	return &manga.Chapter{
+		FilePath: path,
+		Pages:    pages,
+	}, nil
+}
+
+func genMixSmallHuge(path string) (*manga.Chapter, error) {
+	file, err := os.Open(path)
+	if err != nil {
+		return nil, err
+	}
+	defer errs.Capture(&err, file.Close, "failed to close file")
+
+	var pages []*manga.Page
+	for i := 0; i < 10; i++ { // Assuming there are 5 pages for the test
+		img := image.NewRGBA(image.Rect(0, 0, 1, 2000*(i+1)))
+		buf := new(bytes.Buffer)
+		err := jpeg.Encode(buf, img, nil)
+		if err != nil {
+			return nil, err
+		}
+		page := &manga.Page{
+			Index:     uint16(i),
+			Contents:  buf,
+			Extension: ".jpg",
+		}
+		pages = append(pages, page)
+	}
+
+	return &manga.Chapter{
+		FilePath: path,
+		Pages:    pages,
+	}, nil
+}

pkg/converter/errors/converter_errors.go

@@ -0,0 +1,13 @@
+package errors
+
+type PageIgnoredError struct {
+	s string
+}
+
+func (e *PageIgnoredError) Error() string {
+	return e.s
+}
+
+func NewPageIgnored(text string) error {
+	return &PageIgnoredError{text}
+}

pkg/converter/webp/webp_converter.go

@@ -0,0 +1,453 @@
+package webp
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"image"
+	_ "image/jpeg"
+	"image/png"
+	"runtime"
+	"sync"
+	"sync/atomic"
+
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/constant"
+	converterrors "github.com/belphemur/CBZOptimizer/v2/pkg/converter/errors"
+	"github.com/oliamb/cutter"
+	"github.com/rs/zerolog/log"
+	"golang.org/x/exp/slices"
+	_ "golang.org/x/image/webp"
+)
+
+const webpMaxHeight = 16383
+
+type Converter struct {
+	maxHeight  int
+	cropHeight int
+	isPrepared bool
+}
+
+func (converter *Converter) Format() (format constant.ConversionFormat) {
+	return constant.WebP
+}
+
+func New() *Converter {
+	return &Converter{
+		//maxHeight: 16383 / 2,
+		maxHeight:  4000,
+		cropHeight: 2000,
+		isPrepared: false,
+	}
+}
+
+func (converter *Converter) PrepareConverter() error {
+	if converter.isPrepared {
+		return nil
+	}
+	err := PrepareEncoder()
+	if err != nil {
+		return err
+	}
+	converter.isPrepared = true
+	return nil
+}
+
+func (converter *Converter) ConvertChapter(ctx context.Context, chapter *manga.Chapter, quality uint8, split bool, progress func(message string, current uint32, total uint32)) (*manga.Chapter, error) {
+	log.Debug().
+		Str("chapter", chapter.FilePath).
+		Int("pages", len(chapter.Pages)).
+		Uint8("quality", quality).
+		Bool("split", split).
+		Int("max_goroutines", runtime.NumCPU()).
+		Msg("Starting chapter conversion")
+
+	err := converter.PrepareConverter()
+	if err != nil {
+		log.Error().Str("chapter", chapter.FilePath).Err(err).Msg("Failed to prepare converter")
+		return nil, err
+	}
+
+	var wgConvertedPages sync.WaitGroup
+	maxGoroutines := runtime.NumCPU()
+
+	pagesChan := make(chan *manga.PageContainer, maxGoroutines)
+	errChan := make(chan error, maxGoroutines)
+	doneChan := make(chan struct{})
+
+	var wgPages sync.WaitGroup
+	wgPages.Add(len(chapter.Pages))
+
+	guard := make(chan struct{}, maxGoroutines)
+	pagesMutex := sync.Mutex{}
+	var pages []*manga.Page
+	var totalPages = uint32(len(chapter.Pages))
+
+	log.Debug().
+		Str("chapter", chapter.FilePath).
+		Int("total_pages", len(chapter.Pages)).
+		Int("worker_count", maxGoroutines).
+		Msg("Initialized conversion worker pool")
+
+	// Check if context is already cancelled
+	select {
+	case <-ctx.Done():
+		log.Warn().Str("chapter", chapter.FilePath).Msg("Chapter conversion cancelled due to timeout")
+		return nil, ctx.Err()
+	default:
+	}
+
+	// Start the worker pool
+	go func() {
+		defer close(doneChan)
+		for page := range pagesChan {
+			select {
+			case <-ctx.Done():
+				return
+			case guard <- struct{}{}: // would block if guard channel is already filled
+			}
+
+			go func(pageToConvert *manga.PageContainer) {
+				defer func() {
+					wgConvertedPages.Done()
+					<-guard
+				}()
+
+				// Check context cancellation before processing
+				select {
+				case <-ctx.Done():
+					return
+				default:
+				}
+
+				convertedPage, err := converter.convertPage(pageToConvert, quality)
+				if err != nil {
+					if convertedPage == nil {
+						select {
+						case errChan <- err:
+						case <-ctx.Done():
+							return
+						}
+						return
+					}
+					buffer := new(bytes.Buffer)
+					err := png.Encode(buffer, convertedPage.Image)
+					if err != nil {
+						select {
+						case errChan <- err:
+						case <-ctx.Done():
+							return
+						}
+						return
+					}
+					convertedPage.Page.Contents = buffer
+					convertedPage.Page.Extension = ".png"
+					convertedPage.Page.Size = uint64(buffer.Len())
+				}
+				pagesMutex.Lock()
+				pages = append(pages, convertedPage.Page)
+				progress(fmt.Sprintf("Converted %d/%d pages to %s format", len(pages), totalPages, converter.Format()), uint32(len(pages)), totalPages)
+				pagesMutex.Unlock()
+			}(page)
+		}
+	}()
+
+	// Process pages
+	for _, page := range chapter.Pages {
+		select {
+		case <-ctx.Done():
+			log.Warn().Str("chapter", chapter.FilePath).Msg("Chapter conversion cancelled due to timeout")
+			return nil, ctx.Err()
+		default:
+		}
+
+		go func(page *manga.Page) {
+			defer wgPages.Done()
+
+			splitNeeded, img, format, err := converter.checkPageNeedsSplit(page, split)
+			if err != nil {
+				select {
+				case errChan <- err:
+				case <-ctx.Done():
+					return
+				}
+				if img != nil {
+					wgConvertedPages.Add(1)
+					select {
+					case pagesChan <- manga.NewContainer(page, img, format, false):
+					case <-ctx.Done():
+						return
+					}
+				}
+				return
+			}
+
+			if !splitNeeded {
+				wgConvertedPages.Add(1)
+				select {
+				case pagesChan <- manga.NewContainer(page, img, format, true):
+				case <-ctx.Done():
+					return
+				}
+				return
+			}
+
+			images, err := converter.cropImage(img)
+			if err != nil {
+				select {
+				case errChan <- err:
+				case <-ctx.Done():
+					return
+				}
+				return
+			}
+
+			atomic.AddUint32(&totalPages, uint32(len(images)-1))
+			for i, img := range images {
+				select {
+				case <-ctx.Done():
+					return
+				default:
+				}
+
+				newPage := &manga.Page{
+					Index:          page.Index,
+					IsSplitted:     true,
+					SplitPartIndex: uint16(i),
+				}
+				wgConvertedPages.Add(1)
+				select {
+				case pagesChan <- manga.NewContainer(newPage, img, "N/A", true):
+				case <-ctx.Done():
+					return
+				}
+			}
+		}(page)
+	}
+
+	wgPages.Wait()
+	close(pagesChan)
+
+	// Wait for all conversions to complete or context cancellation
+	done := make(chan struct{})
+	go func() {
+		defer close(done)
+		wgConvertedPages.Wait()
+	}()
+
+	select {
+	case <-done:
+		// Conversion completed successfully
+	case <-ctx.Done():
+		log.Warn().Str("chapter", chapter.FilePath).Msg("Chapter conversion cancelled due to timeout")
+		return nil, ctx.Err()
+	}
+
+	close(errChan)
+	close(guard)
+
+	var errList []error
+	for err := range errChan {
+		errList = append(errList, err)
+	}
+
+	var aggregatedError error = nil
+	if len(errList) > 0 {
+		aggregatedError = errors.Join(errList...)
+		log.Debug().
+			Str("chapter", chapter.FilePath).
+			Int("error_count", len(errList)).
+			Msg("Conversion completed with errors")
+	} else {
+		log.Debug().
+			Str("chapter", chapter.FilePath).
+			Int("pages_converted", len(pages)).
+			Msg("Conversion completed successfully")
+	}
+
+	slices.SortFunc(pages, func(a, b *manga.Page) int {
+		if a.Index == b.Index {
+			return int(a.SplitPartIndex) - int(b.SplitPartIndex)
+		}
+		return int(a.Index) - int(b.Index)
+	})
+	chapter.Pages = pages
+
+	log.Debug().
+		Str("chapter", chapter.FilePath).
+		Int("final_page_count", len(pages)).
+		Msg("Pages sorted and chapter updated")
+
+	runtime.GC()
+	log.Debug().Str("chapter", chapter.FilePath).Msg("Garbage collection completed")
+
+	return chapter, aggregatedError
+}
+
+func (converter *Converter) cropImage(img image.Image) ([]image.Image, error) {
+	bounds := img.Bounds()
+	height := bounds.Dy()
+	width := bounds.Dx()
+
+	numParts := height / converter.cropHeight
+	if height%converter.cropHeight != 0 {
+		numParts++
+	}
+
+	log.Debug().
+		Int("original_width", width).
+		Int("original_height", height).
+		Int("crop_height", converter.cropHeight).
+		Int("num_parts", numParts).
+		Msg("Starting image cropping for page splitting")
+
+	parts := make([]image.Image, numParts)
+
+	for i := 0; i < numParts; i++ {
+		partHeight := converter.cropHeight
+		if i == numParts-1 {
+			partHeight = height - i*converter.cropHeight
+		}
+
+		log.Debug().
+			Int("part_index", i).
+			Int("part_height", partHeight).
+			Int("y_offset", i*converter.cropHeight).
+			Msg("Cropping image part")
+
+		part, err := cutter.Crop(img, cutter.Config{
+			Width:  bounds.Dx(),
+			Height: partHeight,
+			Anchor: image.Point{Y: i * converter.cropHeight},
+			Mode:   cutter.TopLeft,
+		})
+		if err != nil {
+			log.Error().
+				Int("part_index", i).
+				Err(err).
+				Msg("Failed to crop image part")
+			return nil, fmt.Errorf("error cropping part %d: %v", i+1, err)
+		}
+
+		parts[i] = part
+
+		log.Debug().
+			Int("part_index", i).
+			Int("cropped_width", part.Bounds().Dx()).
+			Int("cropped_height", part.Bounds().Dy()).
+			Msg("Image part cropped successfully")
+	}
+
+	log.Debug().
+		Int("total_parts", len(parts)).
+		Msg("Image cropping completed")
+
+	return parts, nil
+}
+
+func (converter *Converter) checkPageNeedsSplit(page *manga.Page, splitRequested bool) (bool, image.Image, string, error) {
+	log.Debug().
+		Uint16("page_index", page.Index).
+		Bool("split_requested", splitRequested).
+		Int("page_size", len(page.Contents.Bytes())).
+		Msg("Analyzing page for splitting")
+
+	reader := bytes.NewBuffer(page.Contents.Bytes())
+	img, format, err := image.Decode(reader)
+	if err != nil {
+		log.Debug().Uint16("page_index", page.Index).Err(err).Msg("Failed to decode page image")
+		return false, nil, format, err
+	}
+
+	bounds := img.Bounds()
+	height := bounds.Dy()
+	width := bounds.Dx()
+
+	log.Debug().
+		Uint16("page_index", page.Index).
+		Int("width", width).
+		Int("height", height).
+		Str("format", format).
+		Int("max_height", converter.maxHeight).
+		Int("webp_max_height", webpMaxHeight).
+		Msg("Page dimensions analyzed")
+
+	if height >= webpMaxHeight && !splitRequested {
+		log.Debug().
+			Uint16("page_index", page.Index).
+			Int("height", height).
+			Int("webp_max", webpMaxHeight).
+			Msg("Page too tall for WebP format, would be ignored")
+		return false, img, format, converterrors.NewPageIgnored(fmt.Sprintf("page %d is too tall [max: %dpx] to be converted to webp format", page.Index, webpMaxHeight))
+	}
+
+	needsSplit := height >= converter.maxHeight && splitRequested
+	log.Debug().
+		Uint16("page_index", page.Index).
+		Bool("needs_split", needsSplit).
+		Msg("Page splitting decision made")
+
+	return needsSplit, img, format, nil
+}
+
+func (converter *Converter) convertPage(container *manga.PageContainer, quality uint8) (*manga.PageContainer, error) {
+	log.Debug().
+		Uint16("page_index", container.Page.Index).
+		Str("format", container.Format).
+		Bool("to_be_converted", container.IsToBeConverted).
+		Uint8("quality", quality).
+		Msg("Converting page")
+
+	// Fix WebP format detection (case insensitive)
+	if container.Format == "webp" || container.Format == "WEBP" {
+		log.Debug().
+			Uint16("page_index", container.Page.Index).
+			Msg("Page already in WebP format, skipping conversion")
+		container.Page.Extension = ".webp"
+		return container, nil
+	}
+	if !container.IsToBeConverted {
+		log.Debug().
+			Uint16("page_index", container.Page.Index).
+			Msg("Page marked as not to be converted, skipping")
+		return container, nil
+	}
+
+	log.Debug().
+		Uint16("page_index", container.Page.Index).
+		Uint8("quality", quality).
+		Msg("Encoding page to WebP format")
+
+	converted, err := converter.convert(container.Image, uint(quality))
+	if err != nil {
+		log.Error().
+			Uint16("page_index", container.Page.Index).
+			Err(err).
+			Msg("Failed to convert page to WebP")
+		return nil, err
+	}
+
+	container.SetConverted(converted, ".webp")
+
+	log.Debug().
+		Uint16("page_index", container.Page.Index).
+		Int("original_size", len(container.Page.Contents.Bytes())).
+		Int("converted_size", len(converted.Bytes())).
+		Msg("Page conversion completed")
+
+	return container, nil
+}
+
+// convert converts an image to the WebP format. It decodes the image from the input buffer,
+// encodes it as a WebP file using the webp.Encode() function, and returns the resulting WebP
+// file as a bytes.Buffer.
+func (converter *Converter) convert(image image.Image, quality uint) (*bytes.Buffer, error) {
+	var buf bytes.Buffer
+	err := Encode(&buf, image, quality)
+	if err != nil {
+		return nil, err
+	}
+
+	return &buf, nil
+}

pkg/converter/webp/webp_converter_test.go

@@ -0,0 +1,365 @@
+package webp
+
+import (
+	"bytes"
+	"context"
+	"image"
+	"image/color"
+	"image/jpeg"
+	"image/png"
+	"sync"
+	"testing"
+
+	_ "golang.org/x/image/webp"
+
+	"github.com/belphemur/CBZOptimizer/v2/internal/manga"
+	"github.com/belphemur/CBZOptimizer/v2/pkg/converter/constant"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func createTestImage(width, height int, format string) (image.Image, error) {
+	img := image.NewRGBA(image.Rect(0, 0, width, height))
+
+	// Create a gradient pattern to ensure we have actual image data
+	for y := 0; y < height; y++ {
+		for x := 0; x < width; x++ {
+			img.Set(x, y, color.RGBA{
+				R: uint8((x * 255) / width),
+				G: uint8((y * 255) / height),
+				B: 100,
+				A: 255,
+			})
+		}
+	}
+	return img, nil
+}
+
+func encodeImage(img image.Image, format string) (*bytes.Buffer, string, error) {
+	buf := new(bytes.Buffer)
+
+	switch format {
+	case "jpeg", "jpg":
+		if err := jpeg.Encode(buf, img, &jpeg.Options{Quality: 85}); err != nil {
+			return nil, "", err
+		}
+		return buf, ".jpg", nil
+	case "webp":
+		PrepareEncoder()
+		if err := Encode(buf, img, 80); err != nil {
+			return nil, "", err
+		}
+		return buf, ".webp", nil
+	case "png":
+		fallthrough
+	default:
+		if err := png.Encode(buf, img); err != nil {
+			return nil, "", err
+		}
+		return buf, ".png", nil
+	}
+}
+
+func createTestPage(t *testing.T, index int, width, height int, format string) *manga.Page {
+	img, err := createTestImage(width, height, format)
+	require.NoError(t, err)
+
+	buf, ext, err := encodeImage(img, format)
+	require.NoError(t, err)
+
+	return &manga.Page{
+		Index:     uint16(index),
+		Contents:  buf,
+		Extension: ext,
+		Size:      uint64(buf.Len()),
+	}
+}
+
+func validateConvertedImage(t *testing.T, page *manga.Page) {
+	require.NotNil(t, page.Contents)
+	require.Greater(t, page.Contents.Len(), 0)
+
+	// Try to decode the image
+	img, format, err := image.Decode(bytes.NewReader(page.Contents.Bytes()))
+	require.NoError(t, err, "Failed to decode converted image")
+
+	if page.Extension == ".webp" {
+		assert.Equal(t, "webp", format, "Expected WebP format")
+	}
+
+	require.NotNil(t, img)
+	bounds := img.Bounds()
+	assert.Greater(t, bounds.Dx(), 0, "Image width should be positive")
+	assert.Greater(t, bounds.Dy(), 0, "Image height should be positive")
+}
+
+// TestConverter_ConvertChapter tests the ConvertChapter method of the WebP converter.
+// It verifies various scenarios including:
+// - Converting single normal images
+// - Converting multiple normal images
+// - Converting tall images with split enabled
+// - Handling tall images that exceed maximum height
+//
+// For each test case it validates:
+// - Proper error handling
+// - Expected number of output pages
+// - Correct page ordering
+// - Split page handling and indexing
+// - Progress callback behavior
+//
+// The test uses different image dimensions and split settings to ensure
+// the converter handles all cases correctly while maintaining proper
+// progress reporting and page ordering.
+func TestConverter_ConvertChapter(t *testing.T) {
+	tests := []struct {
+		name        string
+		pages       []*manga.Page
+		split       bool
+		expectSplit bool
+		expectError bool
+		numExpected int
+	}{
+		{
+			name:        "Single normal image",
+			pages:       []*manga.Page{createTestPage(t, 1, 800, 1200, "jpeg")},
+			split:       false,
+			expectSplit: false,
+			numExpected: 1,
+		},
+		{
+			name: "Multiple normal images",
+			pages: []*manga.Page{
+				createTestPage(t, 1, 800, 1200, "png"),
+				createTestPage(t, 2, 800, 1200, "jpeg"),
+			},
+			split:       false,
+			expectSplit: false,
+			numExpected: 2,
+		},
+		{
+			name:        "Tall image with split enabled",
+			pages:       []*manga.Page{createTestPage(t, 1, 800, 5000, "jpeg")},
+			split:       true,
+			expectSplit: true,
+			numExpected: 3, // Based on cropHeight of 2000
+		},
+		{
+			name:        "Tall image without split",
+			pages:       []*manga.Page{createTestPage(t, 1, 800, webpMaxHeight+100, "png")},
+			split:       false,
+			expectError: true,
+			numExpected: 1,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			converter := New()
+			err := converter.PrepareConverter()
+			require.NoError(t, err)
+
+			chapter := &manga.Chapter{
+				Pages: tt.pages,
+			}
+
+			var progressMutex sync.Mutex
+			var lastProgress uint32
+			progress := func(message string, current uint32, total uint32) {
+				progressMutex.Lock()
+				defer progressMutex.Unlock()
+				assert.GreaterOrEqual(t, current, lastProgress, "Progress should never decrease")
+				lastProgress = current
+				assert.LessOrEqual(t, current, total, "Current progress should not exceed total")
+			}
+
+			convertedChapter, err := converter.ConvertChapter(context.Background(), chapter, 80, tt.split, progress)
+
+			if tt.expectError {
+				assert.Error(t, err)
+				if convertedChapter != nil {
+					assert.LessOrEqual(t, len(convertedChapter.Pages), tt.numExpected)
+				}
+				return
+			}
+
+			require.NoError(t, err)
+			require.NotNil(t, convertedChapter)
+			assert.Len(t, convertedChapter.Pages, tt.numExpected)
+
+			// Validate all converted images
+			for _, page := range convertedChapter.Pages {
+				validateConvertedImage(t, page)
+			}
+
+			// Verify page order
+			for i := 1; i < len(convertedChapter.Pages); i++ {
+				prevPage := convertedChapter.Pages[i-1]
+				currPage := convertedChapter.Pages[i]
+
+				if prevPage.Index == currPage.Index {
+					assert.Less(t, prevPage.SplitPartIndex, currPage.SplitPartIndex,
+						"Split parts should be in ascending order for page %d", prevPage.Index)
+				} else {
+					assert.Less(t, prevPage.Index, currPage.Index,
+						"Pages should be in ascending order")
+				}
+			}
+
+			if tt.expectSplit {
+				splitFound := false
+				for _, page := range convertedChapter.Pages {
+					if page.IsSplitted {
+						splitFound = true
+						break
+					}
+				}
+				assert.True(t, splitFound, "Expected to find at least one split page")
+			}
+		})
+	}
+}
+
+func TestConverter_convertPage(t *testing.T) {
+	converter := New()
+	err := converter.PrepareConverter()
+	require.NoError(t, err)
+
+	tests := []struct {
+		name            string
+		format          string
+		isToBeConverted bool
+		expectWebP      bool
+	}{
+		{
+			name:            "Convert PNG to WebP",
+			format:          "png",
+			isToBeConverted: true,
+			expectWebP:      true,
+		},
+		{
+			name:            "Already WebP",
+			format:          "webp",
+			isToBeConverted: true,
+			expectWebP:      true,
+		},
+		{
+			name:            "Skip conversion",
+			format:          "png",
+			isToBeConverted: false,
+			expectWebP:      false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			page := createTestPage(t, 1, 100, 100, tt.format)
+			img, err := createTestImage(100, 100, tt.format)
+			require.NoError(t, err)
+			container := manga.NewContainer(page, img, tt.format, tt.isToBeConverted)
+
+			converted, err := converter.convertPage(container, 80)
+			require.NoError(t, err)
+			assert.NotNil(t, converted)
+
+			if tt.expectWebP {
+				assert.Equal(t, ".webp", converted.Page.Extension)
+				validateConvertedImage(t, converted.Page)
+			} else {
+				assert.NotEqual(t, ".webp", converted.Page.Extension)
+			}
+		})
+	}
+}
+
+func TestConverter_checkPageNeedsSplit(t *testing.T) {
+	converter := New()
+
+	tests := []struct {
+		name        string
+		imageHeight int
+		split       bool
+		expectSplit bool
+		expectError bool
+	}{
+		{
+			name:        "Normal height",
+			imageHeight: 1000,
+			split:       true,
+			expectSplit: false,
+		},
+		{
+			name:        "Height exceeds max with split enabled",
+			imageHeight: 5000,
+			split:       true,
+			expectSplit: true,
+		},
+		{
+			name:        "Height exceeds webp max without split",
+			imageHeight: webpMaxHeight + 100,
+			split:       false,
+			expectError: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			page := createTestPage(t, 1, 800, tt.imageHeight, "jpeg")
+
+			needsSplit, img, format, err := converter.checkPageNeedsSplit(page, tt.split)
+
+			if tt.expectError {
+				assert.Error(t, err)
+				return
+			}
+
+			require.NoError(t, err)
+			assert.NotNil(t, img)
+			assert.NotEmpty(t, format)
+			assert.Equal(t, tt.expectSplit, needsSplit)
+		})
+	}
+}
+
+func TestConverter_Format(t *testing.T) {
+	converter := New()
+	assert.Equal(t, constant.WebP, converter.Format())
+}
+
+func TestConverter_ConvertChapter_Timeout(t *testing.T) {
+	converter := New()
+	err := converter.PrepareConverter()
+	require.NoError(t, err)
+
+	// Create a test chapter with a few pages
+	pages := []*manga.Page{
+		createTestPage(t, 1, 800, 1200, "jpeg"),
+		createTestPage(t, 2, 800, 1200, "jpeg"),
+		createTestPage(t, 3, 800, 1200, "jpeg"),
+	}
+
+	chapter := &manga.Chapter{
+		FilePath: "/test/chapter.cbz",
+		Pages:    pages,
+	}
+
+	var progressMutex sync.Mutex
+	var lastProgress uint32
+	progress := func(message string, current uint32, total uint32) {
+		progressMutex.Lock()
+		defer progressMutex.Unlock()
+		assert.GreaterOrEqual(t, current, lastProgress, "Progress should never decrease")
+		lastProgress = current
+		assert.LessOrEqual(t, current, total, "Current progress should not exceed total")
+	}
+
+	// Test with very short timeout (1 nanosecond)
+	ctx, cancel := context.WithTimeout(context.Background(), 1)
+	defer cancel()
+
+	convertedChapter, err := converter.ConvertChapter(ctx, chapter, 80, false, progress)
+
+	// Should return context error due to timeout
+	assert.Error(t, err)
+	assert.Nil(t, convertedChapter)
+	assert.Equal(t, context.DeadlineExceeded, err)
+}

pkg/converter/webp/webp_provider.go

@@ -6,7 +6,7 @@ import (
 	"io"
 )
 
-const libwebpVersion = "1.4.0"
+const libwebpVersion = "1.6.0"
 
 func PrepareEncoder() error {
 	webpbin.SetLibVersion(libwebpVersion)

renovate.json

@@ -2,5 +2,16 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "config:recommended"
+  ],
+  "packageRules": [
+    {
+      "matchUpdateTypes": [
+        "minor",
+        "patch",
+        "digest"
+      ],
+      "matchCurrentVersion": "!/^0/",
+      "automerge": true
+    }
   ]
 }

utils/optimize.go

@@ -1,48 +0,0 @@
-package utils
-
-import (
-	"fmt"
-	"github.com/belphemur/CBZOptimizer/cbz"
-	"github.com/belphemur/CBZOptimizer/converter"
-	"log"
-	"strings"
-)
-
-// Optimize optimizes a CBZ file using the specified converter.
-func Optimize(chapterConverter converter.Converter, path string, quality uint8, override bool) error {
-	log.Printf("Processing file: %s\n", path)
-
-	// Load the chapter
-	chapter, err := cbz.LoadChapter(path)
-	if err != nil {
-		return fmt.Errorf("failed to load chapter: %v", err)
-	}
-
-	if chapter.IsConverted {
-		log.Printf("Chapter already converted: %s", path)
-		return nil
-	}
-
-	// Convert the chapter
-	convertedChapter, err := chapterConverter.ConvertChapter(chapter, quality, func(msg string) {
-		log.Printf("[%s]%s", path, msg)
-	})
-	if err != nil {
-		return fmt.Errorf("failed to convert chapter: %v", err)
-	}
-	convertedChapter.SetConverted()
-
-	// Write the converted chapter back to a CBZ file
-	outputPath := path
-	if !override {
-		outputPath = strings.TrimSuffix(path, ".cbz") + "_converted.cbz"
-	}
-	err = cbz.WriteChapterToCBZ(convertedChapter, outputPath)
-	if err != nil {
-		return fmt.Errorf("failed to write converted chapter: %v", err)
-	}
-
-	log.Printf("Converted file written to: %s\n", outputPath)
-	return nil
-
-}