add category and global meta (#438)

server/src/main/kotlin/suwayomi/tachidesk/global/GlobalAPI.kt

@@ -8,11 +8,17 @@ package suwayomi.tachidesk.global
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
 import io.javalin.apibuilder.ApiBuilder.get
+import io.javalin.apibuilder.ApiBuilder.patch
 import io.javalin.apibuilder.ApiBuilder.path
+import suwayomi.tachidesk.global.controller.GlobalMetaController
 import suwayomi.tachidesk.global.controller.SettingsController
 
 object GlobalAPI {
     fun defineEndpoints() {
+        path("meta") {
+            get("", GlobalMetaController.getMeta)
+            patch("", GlobalMetaController.modifyMeta)
+        }
         path("settings") {
             get("about", SettingsController.about)
             get("check-update", SettingsController.checkUpdate)

server/src/main/kotlin/suwayomi/tachidesk/global/controller/GlobalMetaController.kt

@@ -0,0 +1,53 @@
+package suwayomi.tachidesk.global.controller
+
+/*
+ * 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/. */
+
+import io.javalin.http.HttpCode
+import suwayomi.tachidesk.global.impl.GlobalMeta
+import suwayomi.tachidesk.server.util.formParam
+import suwayomi.tachidesk.server.util.handler
+import suwayomi.tachidesk.server.util.withOperation
+
+object GlobalMetaController {
+    /** used to modify a category's meta parameters */
+    val getMeta = handler(
+        documentWith = {
+            withOperation {
+                summary("Server level meta mapping")
+                description("Get a list of globally stored key-value mapping, you can set values for whatever you want inside it.")
+            }
+        },
+        behaviorOf = { ctx ->
+            ctx.json(GlobalMeta.getMetaMap())
+            ctx.status(200)
+        },
+        withResults = {
+            httpCode(HttpCode.OK)
+        }
+    )
+
+    /** used to modify global meta parameters */
+    val modifyMeta = handler(
+        formParam<String>("key"),
+        formParam<String>("value"),
+        documentWith = {
+            withOperation {
+                summary("Add meta data to the global meta mapping")
+                description("A simple Key-Value stored at server global level, you can set values for whatever you want inside it.")
+            }
+        },
+        behaviorOf = { ctx, key, value ->
+            GlobalMeta.modifyMeta(key, value)
+            ctx.status(200)
+        },
+        withResults = {
+            httpCode(HttpCode.OK)
+            httpCode(HttpCode.NOT_FOUND)
+        }
+    )
+}

server/src/main/kotlin/suwayomi/tachidesk/global/impl/GlobalMeta.kt

@@ -0,0 +1,43 @@
+package suwayomi.tachidesk.global.impl
+
+import org.jetbrains.exposed.sql.insert
+import org.jetbrains.exposed.sql.select
+import org.jetbrains.exposed.sql.selectAll
+import org.jetbrains.exposed.sql.transactions.transaction
+import org.jetbrains.exposed.sql.update
+import suwayomi.tachidesk.global.model.table.GlobalMetaTable
+
+/*
+ * 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/. */
+
+object GlobalMeta {
+    fun modifyMeta(key: String, value: String) {
+        transaction {
+            val meta = transaction {
+                GlobalMetaTable.select { GlobalMetaTable.key eq key }
+            }.firstOrNull()
+
+            if (meta == null) {
+                GlobalMetaTable.insert {
+                    it[GlobalMetaTable.key] = key
+                    it[GlobalMetaTable.value] = value
+                }
+            } else {
+                GlobalMetaTable.update({ GlobalMetaTable.key eq key }) {
+                    it[GlobalMetaTable.value] = value
+                }
+            }
+        }
+    }
+
+    fun getMetaMap(): Map<String, String> {
+        return transaction {
+            GlobalMetaTable.selectAll()
+                .associate { it[GlobalMetaTable.key] to it[GlobalMetaTable.value] }
+        }
+    }
+}

server/src/main/kotlin/suwayomi/tachidesk/global/model/table/GlobalMetaTable.kt

@@ -0,0 +1,18 @@
+package suwayomi.tachidesk.global.model.table
+
+/*
+ * 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/. */
+
+import org.jetbrains.exposed.dao.id.IntIdTable
+
+/**
+ * Metadata storage for clients, server/global level.
+ */
+object GlobalMetaTable : IntIdTable() {
+    val key = varchar("key", 256)
+    val value = varchar("value", 4096)
+}