Better handle decimal chapter numbers and add categories in ComicInfo.xml files (#9604)

* Serialize whole chapter numbers without decimal point and add library categories to genre

* added Tachiyomi specific ComicInfo Category field

* lint

* implemented requested changes

app/src/main/java/eu/kanade/domain/manga/model/Manga.kt

@@ -95,10 +95,16 @@ fun Manga.hasCustomCover(coverCache: CoverCache = Injekt.get()): Boolean {
 /**
  * Creates a ComicInfo instance based on the manga and chapter metadata.
  */
-fun getComicInfo(manga: Manga, chapter: Chapter, chapterUrl: String) = ComicInfo(
+fun getComicInfo(manga: Manga, chapter: Chapter, chapterUrl: String, categories: List<String>?) = ComicInfo(
     title = ComicInfo.Title(chapter.name),
     series = ComicInfo.Series(manga.title),
-    number = chapter.chapterNumber.takeIf { it >= 0 }?.let { ComicInfo.Number(it.toString()) },
+    number = chapter.chapterNumber.takeIf { it >= 0 }?.let {
+        if ((it.rem(1) == 0.0F)) {
+            ComicInfo.Number(it.toInt().toString())
+        } else {
+            ComicInfo.Number(it.toString())
+        }
+    },
     web = ComicInfo.Web(chapterUrl),
     summary = manga.description?.let { ComicInfo.Summary(it) },
     writer = manga.author?.let { ComicInfo.Writer(it) },
@@ -108,6 +114,7 @@ fun getComicInfo(manga: Manga, chapter: Chapter, chapterUrl: String) = ComicInfo
     publishingStatus = ComicInfo.PublishingStatusTachiyomi(
         ComicInfoPublishingStatus.toComicInfoValue(manga.status),
     ),
+    categories = categories?.let { ComicInfo.CategoriesTachiyomi(it.joinToString()) },
     inker = null,
     colorist = null,
     letterer = null,

app/src/main/java/eu/kanade/tachiyomi/data/download/Downloader.kt

@@ -50,6 +50,7 @@ import tachiyomi.core.util.lang.withIOContext
 import tachiyomi.core.util.lang.withUIContext
 import tachiyomi.core.util.system.ImageUtil
 import tachiyomi.core.util.system.logcat
+import tachiyomi.domain.category.interactor.GetCategories
 import tachiyomi.domain.chapter.model.Chapter
 import tachiyomi.domain.download.service.DownloadPreferences
 import tachiyomi.domain.manga.model.Manga
@@ -75,6 +76,7 @@ class Downloader(
     private val chapterCache: ChapterCache = Injekt.get(),
     private val downloadPreferences: DownloadPreferences = Injekt.get(),
     private val xml: XML = Injekt.get(),
+    private val getCategories: GetCategories = Injekt.get(),
 ) {
 
     /**
@@ -621,14 +623,15 @@ class Downloader(
     /**
      * Creates a ComicInfo.xml file inside the given directory.
      */
-    private fun createComicInfoFile(
+    private suspend fun createComicInfoFile(
         dir: UniFile,
         manga: Manga,
         chapter: Chapter,
         source: HttpSource,
     ) {
         val chapterUrl = source.getChapterUrl(chapter.toSChapter())
-        val comicInfo = getComicInfo(manga, chapter, chapterUrl)
+        val categories = getCategories.await(manga.id).map { it.name.trim() }.takeUnless { it.isEmpty() }
+        val comicInfo = getComicInfo(manga, chapter, chapterUrl, categories)
         // Remove the old file
         dir.findFile(COMIC_INFO_FILE)?.delete()
         dir.createFile(COMIC_INFO_FILE).openOutputStream().use {

core-metadata/src/main/java/tachiyomi/core/metadata/comicinfo/ComicInfo.kt

@@ -16,8 +16,8 @@ fun SManga.copyFromComicInfo(comicInfo: ComicInfo) {
     listOfNotNull(
         comicInfo.genre?.value,
         comicInfo.tags?.value,
+        comicInfo.categories?.value,
     )
-        .flatMap { it.split(", ") }
         .distinct()
         .joinToString(", ") { it.trim() }
         .takeIf { it.isNotEmpty() }
@@ -57,6 +57,7 @@ data class ComicInfo(
     val tags: Tags?,
     val web: Web?,
     val publishingStatus: PublishingStatusTachiyomi?,
+    val categories: CategoriesTachiyomi?,
 ) {
     @Suppress("UNUSED")
     @XmlElement(false)
@@ -128,6 +129,10 @@ data class ComicInfo(
     @Serializable
     @XmlSerialName("PublishingStatusTachiyomi", "http://www.w3.org/2001/XMLSchema", "ty")
     data class PublishingStatusTachiyomi(@XmlValue(true) val value: String = "")
+
+    @Serializable
+    @XmlSerialName("Categories", "http://www.w3.org/2001/XMLSchema", "ty")
+    data class CategoriesTachiyomi(@XmlValue(true) val value: String = "")
 }
 
 enum class ComicInfoPublishingStatus(