chore: Move all routes under routes directory (#2513)

closes #2504

server/routes/api/index.js

@@ -0,0 +1,76 @@
+// @flow
+import Koa from "koa";
+import bodyParser from "koa-body";
+import Router from "koa-router";
+
+import { NotFoundError } from "../../errors";
+import errorHandling from "../../middlewares/errorHandling";
+import methodOverride from "../../middlewares/methodOverride";
+import validation from "../../middlewares/validation";
+import apiKeys from "./apiKeys";
+import attachments from "./attachments";
+import auth from "./auth";
+import authenticationProviders from "./authenticationProviders";
+import collections from "./collections";
+import documents from "./documents";
+import events from "./events";
+import fileOperationsRoute from "./fileOperations";
+import groups from "./groups";
+import hooks from "./hooks";
+import integrations from "./integrations";
+
+import apiWrapper from "./middlewares/apiWrapper";
+import editor from "./middlewares/editor";
+import notificationSettings from "./notificationSettings";
+import revisions from "./revisions";
+import shares from "./shares";
+import team from "./team";
+import users from "./users";
+import utils from "./utils";
+import views from "./views";
+
+const api = new Koa();
+const router = new Router();
+
+// middlewares
+api.use(errorHandling());
+api.use(
+  bodyParser({
+    multipart: true,
+    formidable: { maxFieldsSize: 10 * 1024 * 1024 },
+  })
+);
+api.use(methodOverride());
+api.use(validation());
+api.use(apiWrapper());
+api.use(editor());
+
+// routes
+router.use("/", auth.routes());
+router.use("/", authenticationProviders.routes());
+router.use("/", events.routes());
+router.use("/", users.routes());
+router.use("/", collections.routes());
+router.use("/", documents.routes());
+router.use("/", revisions.routes());
+router.use("/", views.routes());
+router.use("/", hooks.routes());
+router.use("/", apiKeys.routes());
+router.use("/", shares.routes());
+router.use("/", team.routes());
+router.use("/", integrations.routes());
+router.use("/", notificationSettings.routes());
+router.use("/", attachments.routes());
+router.use("/", utils.routes());
+router.use("/", groups.routes());
+router.use("/", fileOperationsRoute.routes());
+
+router.post("*", (ctx) => {
+  ctx.throw(new NotFoundError("Endpoint not found"));
+});
+
+// Router is embedded in a Koa application wrapper, because koa-router does not
+// allow middleware to catch any routes which were not explicitly defined.
+api.use(router.routes());
+
+export default api;