import { copy } from "https://deno.land/std@0.104.0/io/util.ts";
import { proxy } from "https://deno.land/x/oak_http_proxy@2.1.0/mod.ts";
import { fileExists } from "./lib/fileExists.ts";
import { Application, Context, Router } from "oak";
const app = new Application();


let port = 3001;
for await (const dirEntry of Deno.readDir(Deno.cwd())) {
  if (!(dirEntry.isDirectory && dirEntry.name.includes('-service'))) continue;
  const filename = dirEntry.name + '/index.ts';
  const permfile = dirEntry.name + '/perms';
  const prefixfile = dirEntry.name + '/prefix';
  if (!(await fileExists(filename))) continue;
  if (!(await fileExists(prefixfile))) continue;

  const perms = (await fileExists(permfile)) ? await Deno.readTextFileSync(permfile).split('\n') : []
  // successful, file or directory must exist
  const p = Deno.run({
    cmd: ['deno', 'run', ...perms, '--watch', filename, port.toString()],
    stdout: "piped",
    stderr: "piped",
  })

  const prefix = Deno.readTextFileSync(prefixfile);
  const fixedPort = port;
  const routes = new Router()
    .all(`/${prefix}/(.*)`, proxy((ctx: Context) => `http://localhost:${fixedPort}${ctx.request.url.pathname}`, {}))
  app.use(routes.routes());
  app.use(routes.allowedMethods());

  port++;

  copy(p.stdout, Deno.stdout);
  copy(p.stderr, Deno.stderr);
}

app.listen({
  port: 3000
})