refactor endpoints to the new styles

server/src/main/kotlin/suwayomi/tachidesk/manga/controller/ExtensionController.kt

@@ -0,0 +1,67 @@
+package suwayomi.tachidesk.manga.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.Context
+import suwayomi.tachidesk.manga.impl.extension.Extension
+import suwayomi.tachidesk.manga.impl.extension.ExtensionsList
+import suwayomi.tachidesk.server.JavalinSetup.future
+
+object ExtensionController {
+    /** list all extensions */
+    fun list(ctx: Context) {
+        ctx.json(
+            future {
+                ExtensionsList.getExtensionList()
+            }
+        )
+    }
+
+    /** install extension identified with "pkgName" */
+    fun install(ctx: Context) {
+        val pkgName = ctx.pathParam("pkgName")
+
+        ctx.json(
+            future {
+                Extension.installExtension(pkgName)
+            }
+        )
+    }
+
+    /** update extension identified with "pkgName" */
+    fun update(ctx: Context) {
+        val pkgName = ctx.pathParam("pkgName")
+
+        ctx.json(
+            future {
+                Extension.updateExtension(pkgName)
+            }
+        )
+    }
+
+    /** uninstall extension identified with "pkgName" */
+    fun uninstall(ctx: Context) {
+        val pkgName = ctx.pathParam("pkgName")
+
+        Extension.uninstallExtension(pkgName)
+        ctx.status(200)
+    }
+
+    /** icon for extension named `apkName` */
+    fun icon(ctx: Context) {
+        val apkName = ctx.pathParam("apkName")
+
+        ctx.result(
+            future { Extension.getExtensionIcon(apkName) }
+                .thenApply {
+                    ctx.header("content-type", it.second)
+                    it.first
+                }
+        )
+    }
+}