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feat(converter): add --keep-filenames flag to preserve original page filenames

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Add a new `--keep-filenames` boolean flag (no shorthand, default false) on
both `optimize` and `watch` commands. When enabled, page entries in the
output CBZ preserve their original base filenames instead of being
renumbered to `%04d` sequential indices. Extension is swapped on format
conversion (e.g. `001.png` → `001.webp`), split pages get `-NN` suffixes
on the original stem, and duplicate base names fall back to
`<stem>_<index>.<ext>`. Watch mode supports the flag via the
`keep-filenames` viper config key.

Design: data-driven `OriginalName` field on `manga.PageFile`, set at
extraction in `cbz_loader.ExtractChapter`. The `Converter` interface is
unchanged. Flag off → behavior identical to before.

Closes #216
This commit is contained in:
Antoine Aflalo
2026-07-21 19:38:17 -04:00
parent 650623b340
commit f3ba585c13
12 changed files with 245 additions and 37 deletions
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cmd/cbzoptimizer/commands/optimize_command_test.go
+4
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@@ -86,6 +86,7 @@ func TestConvertCbzCommand(t *testing.T) {
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().Bool("keep-filenames", false, "Preserve original page filenames instead of renumbering to sequential indices")
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
@@ -197,6 +198,7 @@ func setupTestCommand(t *testing.T) (*cobra.Command, func()) {
cmd.Flags().IntP("parallelism", "n", 1, "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().Bool("keep-filenames", false, "Preserve original page filenames instead of renumbering to sequential indices")
cmd.Flags().DurationP("timeout", "t", 0, "Maximum time allowed for converting a single chapter")
// Reset converterType to default before test for consistency
@@ -433,6 +435,7 @@ func TestConvertCbzCommand_ManyFiles_NoDeadlock(t *testing.T) {
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().Bool("keep-filenames", false, "Preserve original page filenames instead of renumbering to sequential indices")
cmd.Flags().DurationP("timeout", "t", 0, "Maximum time allowed for converting a single chapter")
converterType = constant.DefaultConversion
@@ -535,6 +538,7 @@ func TestConvertCbzCommand_HighParallelism_NoDeadlock(t *testing.T) {
cmd.Flags().IntP("parallelism", "n", 8, "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().Bool("keep-filenames", false, "Preserve original page filenames instead of renumbering to sequential indices")
cmd.Flags().DurationP("timeout", "t", 0, "Maximum time allowed for converting a single chapter")
converterType = constant.DefaultConversion