Optimize and cleanup library code (#2329)

data/src/main/java/tachiyomi/data/manga/MangaMapper.kt

@@ -92,7 +92,7 @@ object MangaMapper {
         chapterFetchedAt: Long,
         lastRead: Long,
         bookmarkCount: Double,
-        category: Long,
+        categories: String,
     ): LibraryManga = LibraryManga(
         manga = mapManga(
             id,
@@ -121,7 +121,7 @@ object MangaMapper {
             isSyncing,
             notes,
         ),
-        category = category,
+        categories = categories.split(",").map { it.toLong() },
         totalChapters = totalCount,
         readCount = readCount.toLong(),
         bookmarkCount = bookmarkCount.toLong(),

data/src/main/sqldelight/tachiyomi/migrations/6.sqm

@@ -0,0 +1,39 @@
+DROP VIEW IF EXISTS libraryView;
+
+CREATE VIEW libraryView AS
+SELECT
+    M.*,
+    coalesce(C.total, 0) AS totalCount,
+    coalesce(C.readCount, 0) AS readCount,
+    coalesce(C.latestUpload, 0) AS latestUpload,
+    coalesce(C.fetchedAt, 0) AS chapterFetchedAt,
+    coalesce(C.lastRead, 0) AS lastRead,
+    coalesce(C.bookmarkCount, 0) AS bookmarkCount,
+    coalesce(MC.categories, '0') AS categories
+FROM mangas M
+LEFT JOIN (
+    SELECT
+        chapters.manga_id,
+        count(*) AS total,
+        sum(read) AS readCount,
+        coalesce(max(chapters.date_upload), 0) AS latestUpload,
+        coalesce(max(history.last_read), 0) AS lastRead,
+        coalesce(max(chapters.date_fetch), 0) AS fetchedAt,
+        sum(chapters.bookmark) AS bookmarkCount
+    FROM chapters
+    LEFT JOIN excluded_scanlators
+    ON chapters.manga_id = excluded_scanlators.manga_id
+    AND chapters.scanlator = excluded_scanlators.scanlator
+    LEFT JOIN history
+    ON chapters._id = history.chapter_id
+    WHERE excluded_scanlators.scanlator IS NULL
+    GROUP BY chapters.manga_id
+) AS C
+ON M._id = C.manga_id
+LEFT JOIN (
+    SELECT manga_id, group_concat(category_id) AS categories
+    FROM mangas_categories
+    GROUP BY manga_id
+) AS MC
+ON MC.manga_id = M._id
+WHERE M.favorite = 1;

data/src/main/sqldelight/tachiyomi/view/libraryView.sq

@@ -7,9 +7,9 @@ SELECT
     coalesce(C.fetchedAt, 0) AS chapterFetchedAt,
     coalesce(C.lastRead, 0) AS lastRead,
     coalesce(C.bookmarkCount, 0) AS bookmarkCount,
-    coalesce(MC.category_id, 0) AS category
+    coalesce(MC.categories, '0') AS categories
 FROM mangas M
-LEFT JOIN(
+LEFT JOIN (
     SELECT
         chapters.manga_id,
         count(*) AS total,
@@ -28,7 +28,11 @@ LEFT JOIN(
     GROUP BY chapters.manga_id
 ) AS C
 ON M._id = C.manga_id
-LEFT JOIN mangas_categories AS MC
+LEFT JOIN (
+    SELECT manga_id, group_concat(category_id) AS categories
+    FROM mangas_categories
+    GROUP BY manga_id
+) AS MC
 ON MC.manga_id = M._id
 WHERE M.favorite = 1;