import { Application } from "@oak/oak";
import { oakCors } from "@tajpouria/cors";

import dumpsRouter from "./routes/dumps.ts";
import filesRouter from "./routes/files.ts";
import usersRouter from "./routes/users.ts";
import avatarsRouter from "./routes/avatars.ts";
import wsRouter from "./routes/ws.ts";
import previewRouter from "./routes/preview.ts";
import playlistsRouter from "./routes/playlists.ts";
import commentsRouter from "./routes/comments.ts";
import followsRouter from "./routes/follows.ts";
import notificationsRouter from "./routes/notifications.ts";
import invitesRouter from "./routes/invites.ts";

import { BASE_URL, HOSTNAME, PORT } from "./config.ts";
import { errorMiddleware } from "./middleware/error.ts";
import routeStaticFilesFrom from "./lib/static.ts";
import { DUMPS_DIR, UPLOADS_DIR } from "./utils/upload.ts";
import { UUID_RE } from "./lib/slugify.ts";

const app = new Application();

app.use(errorMiddleware);
app.use(oakCors());
app.use(
  dumpsRouter.routes(),
  dumpsRouter.allowedMethods(),
);
app.use(
  filesRouter.routes(),
  filesRouter.allowedMethods(),
);
app.use(
  usersRouter.routes(),
  usersRouter.allowedMethods(),
);
app.use(
  avatarsRouter.routes(),
  avatarsRouter.allowedMethods(),
);
app.use(
  wsRouter.routes(),
  wsRouter.allowedMethods(),
);
app.use(
  previewRouter.routes(),
  previewRouter.allowedMethods(),
);
app.use(
  playlistsRouter.routes(),
  playlistsRouter.allowedMethods(),
);
app.use(
  commentsRouter.routes(),
  commentsRouter.allowedMethods(),
);
app.use(
  followsRouter.routes(),
  followsRouter.allowedMethods(),
);
app.use(
  notificationsRouter.routes(),
  notificationsRouter.allowedMethods(),
);
app.use(
  invitesRouter.routes(),
  invitesRouter.allowedMethods(),
);
app.use(routeStaticFilesFrom([
  `${Deno.cwd()}/dist`,
  `${Deno.cwd()}/public`,
]));

app.addEventListener(
  "listen",
  () => console.log(`Server listening on ${BASE_URL}`),
);

app.addEventListener(
  "error",
  (e) => console.log(`Uncaught error: ${e.message}`),
);

// Migrate dump files from uploads root to uploads/dumps subfolder
async function migrateDumpFiles() {
  await Deno.mkdir(DUMPS_DIR, { recursive: true });
  for await (const entry of Deno.readDir(UPLOADS_DIR)) {
    if (entry.isFile && UUID_RE.test(entry.name)) {
      await Deno.rename(
        `${UPLOADS_DIR}/${entry.name}`,
        `${DUMPS_DIR}/${entry.name}`,
      ).catch(() => {});
    }
  }
}

if (import.meta.main) {
  await migrateDumpFiles();
  await app.listen({ hostname: HOSTNAME, port: PORT });
}

export { app };