import { serveDir } from "@std/http/file-server";
import { Manifest } from "./manifest.ts";

export class TestServer {
  private server: Deno.HttpServer<Deno.NetAddr> | null;
  private manifest: Manifest;

  // Takes the root dir of the current package `projectDir`,
  // and a directory to use as the root of the static
  // content server `serverDir`.
  constructor(manifest: Manifest) {
    this.server = null;
    this.manifest = manifest;
  }

  start(port: number) {
    this.server = Deno.serve(
      { port, hostname: "127.0.0.1", onListen() {} },
      (req: Request) =>
        serveDir(req, {
          fsRoot: this.manifest.serverDir,
          quiet: true,
        }),
    );
    if (!this.server) throw new Error("Server creation failed");
    this.server.unref();
  }

  // Returns the listening port, if server running.
  port(): number | undefined {
    return this.server?.addr?.port;
  }

  async stop() {
    if (this.server) {
      await this.server.shutdown();
    }
  }
}