Add default category to the database (#561)

* Add default category to the database

* Fix getCategorySize

server/src/main/kotlin/suwayomi/tachidesk/graphql/dataLoaders/MangaDataLoader.kt

@@ -12,6 +12,7 @@ import org.dataloader.DataLoader
 import org.dataloader.DataLoaderFactory
 import org.jetbrains.exposed.sql.Slf4jSqlDebugLogger
 import org.jetbrains.exposed.sql.addLogger
+import org.jetbrains.exposed.sql.andWhere
 import org.jetbrains.exposed.sql.select
 import org.jetbrains.exposed.sql.transactions.transaction
 import suwayomi.tachidesk.graphql.types.MangaNodeList
@@ -42,10 +43,23 @@ class MangaForCategoryDataLoader : KotlinDataLoader<Int, MangaNodeList> {
         future {
             transaction {
                 addLogger(Slf4jSqlDebugLogger)
-                val itemsByRef = CategoryMangaTable.innerJoin(MangaTable).select { CategoryMangaTable.category inList ids }
+                val itemsByRef = if (ids.contains(0)) {
+                    MangaTable
+                        .leftJoin(CategoryMangaTable)
+                        .select { MangaTable.inLibrary eq true }
+                        .andWhere { CategoryMangaTable.manga.isNull() }
+                        .map { MangaType(it) }
+                        .let {
+                            mapOf(0 to it)
+                        }
+                } else {
+                    emptyMap()
+                } + CategoryMangaTable.innerJoin(MangaTable)
+                    .select { CategoryMangaTable.category inList ids }
                     .map { Pair(it[CategoryMangaTable.category].value, MangaType(it)) }
                     .groupBy { it.first }
                     .mapValues { it.value.map { pair -> pair.second } }
+
                 ids.map { (itemsByRef[it] ?: emptyList()).toNodeList() }
             }
         }

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Category.kt

@@ -10,6 +10,7 @@ package suwayomi.tachidesk.manga.impl
 import org.jetbrains.exposed.sql.SortOrder
 import org.jetbrains.exposed.sql.SqlExpressionBuilder.eq
 import org.jetbrains.exposed.sql.and
+import org.jetbrains.exposed.sql.andWhere
 import org.jetbrains.exposed.sql.deleteWhere
 import org.jetbrains.exposed.sql.insert
 import org.jetbrains.exposed.sql.insertAndGetId
@@ -19,7 +20,6 @@ import org.jetbrains.exposed.sql.transactions.transaction
 import org.jetbrains.exposed.sql.update
 import suwayomi.tachidesk.manga.impl.CategoryManga.removeMangaFromCategory
 import suwayomi.tachidesk.manga.model.dataclass.CategoryDataClass
-import suwayomi.tachidesk.manga.model.dataclass.IncludeInUpdate
 import suwayomi.tachidesk.manga.model.table.CategoryMangaTable
 import suwayomi.tachidesk.manga.model.table.CategoryMetaTable
 import suwayomi.tachidesk.manga.model.table.CategoryTable
@@ -54,7 +54,7 @@ object Category {
         transaction {
             CategoryTable.update({ CategoryTable.id eq categoryId }) {
                 if (name != null && !name.equals(DEFAULT_CATEGORY_NAME, ignoreCase = true)) it[CategoryTable.name] = name
-                if (isDefault != null) it[CategoryTable.isDefault] = isDefault
+                if (isDefault != null && categoryId != DEFAULT_CATEGORY_ID) it[CategoryTable.isDefault] = isDefault
                 if (includeInUpdate != null) it[CategoryTable.includeInUpdate] = includeInUpdate
             }
         }
@@ -64,6 +64,7 @@ object Category {
      * Move the category from order number `from` to `to`
      */
     fun reorderCategory(from: Int, to: Int) {
+        if (from == 0 || to == 0) return
         transaction {
             val categories = CategoryTable.selectAll().orderBy(CategoryTable.order to SortOrder.ASC).toMutableList()
             categories.add(to - 1, categories.removeAt(from - 1))
@@ -76,6 +77,7 @@ object Category {
     }
 
     fun removeCategory(categoryId: Int) {
+        if (categoryId == DEFAULT_CATEGORY_ID) return
         transaction {
             CategoryMangaTable.select { CategoryMangaTable.category eq categoryId }.forEach {
                 removeMangaFromCategory(it[CategoryMangaTable.manga].value, categoryId)
@@ -97,24 +99,32 @@ object Category {
         }
     }
 
+    private fun needsDefaultCategory() = transaction {
+        MangaTable
+            .leftJoin(CategoryMangaTable)
+            .select { MangaTable.inLibrary eq true }
+            .andWhere { CategoryMangaTable.manga.isNull() }
+            .empty()
+            .not()
+    }
+
     const val DEFAULT_CATEGORY_ID = 0
     const val DEFAULT_CATEGORY_NAME = "Default"
-    private fun addDefaultIfNecessary(categories: List<CategoryDataClass>): List<CategoryDataClass> {
-        val defaultCategorySize = MangaTable.select { (MangaTable.inLibrary eq true) and (MangaTable.defaultCategory eq true) }.count().toInt()
-        return if (defaultCategorySize > 0) {
-            listOf(CategoryDataClass(DEFAULT_CATEGORY_ID, 0, DEFAULT_CATEGORY_NAME, true, defaultCategorySize, IncludeInUpdate.UNSET)) + categories
-        } else {
-            categories
-        }
-    }
 
     fun getCategoryList(): List<CategoryDataClass> {
         return transaction {
-            val categories = CategoryTable.selectAll().orderBy(CategoryTable.order to SortOrder.ASC).map {
-                CategoryTable.toDataClass(it)
-            }
-
-            addDefaultIfNecessary(categories)
+            CategoryTable.selectAll()
+                .orderBy(CategoryTable.order to SortOrder.ASC)
+                .let {
+                    if (needsDefaultCategory()) {
+                        it
+                    } else {
+                        it.andWhere { CategoryTable.id neq DEFAULT_CATEGORY_ID }
+                    }
+                }
+                .map {
+                    CategoryTable.toDataClass(it)
+                }
         }
     }
 
@@ -128,8 +138,15 @@ object Category {
 
     fun getCategorySize(categoryId: Int): Int {
         return transaction {
-            CategoryMangaTable.select {
-                CategoryMangaTable.category eq categoryId
+            if (categoryId == DEFAULT_CATEGORY_ID) {
+                MangaTable
+                    .leftJoin(CategoryMangaTable)
+                    .select { MangaTable.inLibrary eq true }
+                    .andWhere { CategoryMangaTable.manga.isNull() }
+            } else {
+                CategoryMangaTable.select {
+                    CategoryMangaTable.category eq categoryId
+                }
             }.count().toInt()
         }
     }

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/CategoryManga.kt

@@ -33,6 +33,7 @@ import suwayomi.tachidesk.manga.model.table.toDataClass
 
 object CategoryManga {
     fun addMangaToCategory(mangaId: Int, categoryId: Int) {
+        if (categoryId == DEFAULT_CATEGORY_ID) return
         fun notAlreadyInCategory() = CategoryMangaTable.select { (CategoryMangaTable.category eq categoryId) and (CategoryMangaTable.manga eq mangaId) }.isEmpty()
 
         transaction {
@@ -50,6 +51,7 @@ object CategoryManga {
     }
 
     fun removeMangaFromCategory(mangaId: Int, categoryId: Int) {
+        if (categoryId == DEFAULT_CATEGORY_ID) return
         transaction {
             CategoryMangaTable.deleteWhere { (CategoryMangaTable.category eq categoryId) and (CategoryMangaTable.manga eq mangaId) }
             if (CategoryMangaTable.select { CategoryMangaTable.manga eq mangaId }.count() == 0L) {

server/src/main/kotlin/suwayomi/tachidesk/manga/impl/Library.kt

@@ -7,6 +7,7 @@ package suwayomi.tachidesk.manga.impl
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
+import org.jetbrains.exposed.sql.and
 import org.jetbrains.exposed.sql.insert
 import org.jetbrains.exposed.sql.select
 import org.jetbrains.exposed.sql.transactions.transaction
@@ -22,7 +23,9 @@ object Library {
         val manga = getManga(mangaId)
         if (!manga.inLibrary) {
             transaction {
-                val defaultCategories = CategoryTable.select { CategoryTable.isDefault eq true }.toList()
+                val defaultCategories = CategoryTable.select {
+                    (CategoryTable.isDefault eq true) and (CategoryTable.id neq Category.DEFAULT_CATEGORY_ID)
+                }.toList()
                 val existingCategories = CategoryMangaTable.select { CategoryMangaTable.manga eq mangaId }.toList()
 
                 MangaTable.update({ MangaTable.id eq manga.id }) {

server/src/main/kotlin/suwayomi/tachidesk/server/database/migration/M0027_AddDefaultCategory.kt

@@ -0,0 +1,17 @@
+package suwayomi.tachidesk.server.database.migration
+
+import de.neonew.exposed.migrations.helpers.SQLMigration
+
+/*
+ * Copyright (C) Contributors to the Suwayomi project
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+@Suppress("ClassName", "unused")
+class M0027_AddDefaultCategory : SQLMigration() {
+    override val sql: String = """
+        INSERT INTO CATEGORY (ID, NAME, IS_DEFAULT, "ORDER", INCLUDE_IN_UPDATE) VALUES (0, 'Default', TRUE, 0, -1)
+    """.trimIndent()
+}