import assert from 'node:assert/strict';
import { randomUUID } from 'node:crypto';
import { io, type Socket } from 'socket.io-client';
import { eq } from 'drizzle-orm';
import { createApp } from '../src/app.js';
import { loadConfig } from '../src/config.js';
import * as schema from '../src/db/schema.js';
import { clientIp } from '../src/security.js';
import { mkdtemp, rm } from 'node:fs/promises';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
export function urlFor(value: string) {
  return /^https?:\/\//.test(value)
    ? value
        .split('\n')
        .map((url) => new URL(url).href)
        .join('\n')
    : `https://example.test/${encodeURIComponent(value)}`;
}
const origin = 'http://hop.test';
type Client = { cookie: string; csrf: string; deviceId: string; socket?: Socket; ip: string };
export async function fixture(discovery = false, mailer?: import('../src/auth.js').Mailer) {
  const folder = await mkdtemp(join(tmpdir(), 'hop-api-'));
  const cfg = {
    ...loadConfig({
      APP_URL: origin,
      DATABASE_PATH: ':memory:',
      SESSION_SECRET: 's'.repeat(40),
      DISCOVERY_SECRET: 'd'.repeat(40),
    }),
    discoveryEnabled: discovery,
    uploadDir: join(folder, 'uploads'),
    minFreeBytes: 0,
    trustedProxies: ['127.0.0.1', '::1'],
    offlineGraceMs: 20,
  };
  const runtime = await createApp(cfg, { mailer });
  await runtime.app.listen({ port: 0, host: '127.0.0.1' });
  const address = runtime.app.server.address();
  assert(address && typeof address !== 'string');
  const url = `http://127.0.0.1:${address.port}`;
  const sockets: Socket[] = [];
  const call = async (
    c: Client | null,
    path: string,
    method = 'GET',
    payload?: unknown,
    key?: string,
    headers: Record<string, string> = {},
  ) =>
    runtime.app.inject({
      method: method as any,
      url: `/api${path}`,
      headers: {
        origin,
        ...(c ? { cookie: c.cookie, 'x-csrf-token': c.csrf, 'x-forwarded-for': c.ip } : {}),
        ...(key ? { 'idempotency-key': key } : {}),
        ...headers,
      },
      payload,
    });
  const create = async (ip = '203.0.113.1', online = true) => {
    const response = await call(null, '/guest/session', 'POST', {});
    assert.equal(response.statusCode, 200);
    const result = response.json();
    const c: Client = {
      cookie: String(response.headers['set-cookie']).split(';')[0]!,
      csrf: result.csrfToken,
      deviceId: result.device.id,
      ip,
    };
    if (online) await connect(c);
    return c;
  };
  const connect = async (c: Client) => {
    const socket = io(url, {
      transports: ['websocket'],
      reconnection: false,
      auth: { csrfToken: c.csrf },
      extraHeaders: { Origin: origin, Cookie: c.cookie, 'X-Forwarded-For': c.ip },
    });
    sockets.push(socket);
    await new Promise<void>((resolve, reject) => {
      const timer = setTimeout(() => reject(Error('socket connect timeout')), 3000);
      socket.once('connect', () => {
        clearTimeout(timer);
        resolve();
      });
      socket.once('connect_error', (err) => {
        clearTimeout(timer);
        reject(err);
      });
    });
    c.socket = socket;
    return socket;
  };
  const invitations = new Map<string, any>();
  const space = async (a: Client, b: Client, approvalRequired = false) => {
    const current = (await call(a, '/spaces')).json().spaces;
    let result = invitations.get(a.deviceId);
    if (!result || !current.some((room: any) => room.id === result.space.id)) {
      const response = await call(a, '/spaces', 'POST', { approvalRequired });
      assert.equal(response.statusCode, 200, response.body);
      result = response.json();
      invitations.set(a.deviceId, result);
    }
    const join = await call(b, '/spaces/join', 'POST', { code: result.code });
    assert.equal(join.statusCode, 200);
    return result;
  };
  const request = async (
    a: Client,
    b: Client,
    text = '안녕하세요',
    kind: 'url' = 'url',
    count = 1,
    key = randomUUID(),
  ) => {
    const r = await call(
      a,
      '/transfer-requests',
      'POST',
      { targetDeviceId: b.deviceId, kind, byteSize: Buffer.byteLength(urlFor(text)), count },
      key,
    );
    return r;
  };
  const complete = async (a: Client, b: Client, text = '안녕하세요') => {
    const r = await request(a, b, text);
    assert.equal(r.statusCode, 200);
    const id = r.json().requestId;
    assert.equal(
      (await call(b, `/transfer-requests/${id}/accept`, 'POST', {}, randomUUID())).statusCode,
      200,
    );
    assert.equal(
      (await call(a, `/transfers/${id}/complete`, 'POST', { urls: [urlFor(text)] }, randomUUID()))
        .statusCode,
      200,
    );
    return id;
  };
  const close = async () => {
    for (const socket of sockets) socket.disconnect();
    await runtime.app.close();
    await rm(folder, { recursive: true, force: true });
  };
  return { ...runtime, cfg, url, call, create, connect, space, request, complete, close };
}