feat: avoid converting already converted chapters

cbz/cbz_creator.go

@@ -57,5 +57,17 @@ func WriteChapterToCBZ(chapter *packer.Chapter, outputFilePath string) error {
 		}
 	}
 
+	if chapter.IsConverted {
+		convertedWriter, err := zipWriter.Create("Converted.txt")
+		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

@@ -3,10 +3,11 @@ package cbz
 import (
 	"CBZOptimizer/packer"
 	"archive/zip"
+	"bufio"
 	"bytes"
 	"fmt"
+	"github.com/araddon/dateparse"
 	"io"
-	"io/ioutil"
 	"path/filepath"
 	"strings"
 )
@@ -36,12 +37,28 @@ func LoadChapter(filePath string) (*packer.Chapter, error) {
 
 			if ext == ".xml" && strings.ToLower(filepath.Base(f.Name)) == "comicinfo.xml" {
 				// Read the ComicInfo.xml file content
-				xmlContent, err := ioutil.ReadAll(rc)
+				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)

cmd/convert_cbz_command.go

@@ -71,6 +71,11 @@ func ConvertCbzCommand(cmd *cobra.Command, args []string) error {
 					continue
 				}
 
+				if chapter.IsConverted {
+					fmt.Printf("Chapter already converted: %s\n", path)
+					continue
+				}
+
 				// Convert the chapter
 				convertedChapter, err := chapterConverter.ConvertChapter(chapter, quality, func(msg string) {
 					fmt.Println(msg)
@@ -79,6 +84,7 @@ func ConvertCbzCommand(cmd *cobra.Command, args []string) error {
 					fmt.Printf("Failed to convert chapter: %v\n", err)
 					continue
 				}
+				convertedChapter.SetConverted()
 
 				// Write the converted chapter back to a CBZ file
 				outputPath := path

go.mod

@@ -3,6 +3,7 @@ module CBZOptimizer
 go 1.23
 
 require (
+	github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de
 	github.com/nickalie/go-binwrapper v0.0.0-20190114141239-525121d43c84
 	github.com/nickalie/go-webpbin v0.0.0-20220110095747-f10016bf2dc1
 	github.com/oliamb/cutter v0.2.2

go.sum

@@ -1,3 +1,5 @@
+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/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
@@ -21,6 +23,7 @@ github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
 github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/mattn/go-runewidth v0.0.10/go.mod h1:RAqKPSqVFrSLVXbA8x7dzmKdmGzieGRCM46jaSJTDAk=
 github.com/mholt/archiver v3.1.1+incompatible h1:1dCVxuqs0dJseYEhi5pl7MYPH9zDa1wBi7mF09cbNkU=
 github.com/mholt/archiver v3.1.1+incompatible/go.mod h1:Dh2dOXnSdiLxRiPoVfIr/fI1TwETms9B8CTWfeh7ROU=
 github.com/nickalie/go-binwrapper v0.0.0-20190114141239-525121d43c84 h1:/6MoQlTdk1eAi0J9O89ypO8umkp+H7mpnSF2ggSL62Q=
@@ -38,11 +41,13 @@ github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsK
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rivo/uniseg v0.1.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rogpeppe/go-internal v1.9.0 h1:73kH8U+JUqXU8lRuOHeVHaa/SZPifC7BkcraZVejAe8=
 github.com/rogpeppe/go-internal v1.9.0/go.mod h1:WtVeX8xhTBvf0smdhujwtBcq4Qrzq/fJaraNFVN+nFs=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/samber/lo v1.47.0 h1:z7RynLwP5nbyRscyvcD043DWYoOcYRv3mV8lBeqOCLc=
 github.com/samber/lo v1.47.0/go.mod h1:RmDH9Ct32Qy3gduHQuKJ3gW1fMHAnE/fAzQuf6He5cU=
+github.com/scylladb/termtables v0.0.0-20191203121021-c4c0b6d42ff4/go.mod h1:C1a7PQSMz9NShzorzCiG2fk9+xuCgLkPeCvMHYR2OWg=
 github.com/spf13/cobra v1.8.1 h1:e5/vxKd/rZsfSJMUX1agtjeTDf+qv1/JdBF8gg5k9ZM=
 github.com/spf13/cobra v1.8.1/go.mod h1:wHxEcudfqmLYa8iTfL+OuZPbBZkmvliBWKIezN3kD9Y=
 github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=

packer/chapter.go

@@ -1,5 +1,7 @@
 package packer
 
+import "time"
+
 type Chapter struct {
 	// FilePath is the path to the chapter's directory.
 	FilePath string
@@ -7,4 +9,14 @@ type Chapter struct {
 	Pages []*Page
 	// ComicInfo is a string containing information about the chapter.
 	ComicInfoXml string
+	// IsConverted is a boolean that indicates whether the chapter has been converted.
+	IsConverted bool
+	// ConvertedTime is a pointer to a time.Time object that indicates when the chapter was converted. Nil mean not converted.
+	ConvertedTime time.Time
+}
+
+// SetConverted sets the IsConverted field to true and sets the ConvertedTime field to the current time.
+func (chapter *Chapter) SetConverted() {
+	chapter.IsConverted = true
+	chapter.ConvertedTime = time.Now()
 }