// Regression test: GET /api/v1/assets must be scoped to the caller's accessible
// projects. A pre-fix bug returned every asset across every project to any
// authenticated user, defeating RBAC v2.
//
// Like project-access.test.js, the assets router uses the singleton pool, so we
// point DATABASE_URL at TEST_DATABASE_URL and seed through the same pool.
// Skips when TEST_DATABASE_URL is unset.
import { test } from 'node:test';
import assert from 'node:assert/strict';
import express from 'express';
import { isTestDbConfigured, setupTestDb } from '../helpers/setup-db.js';

const SKIP = !isTestDbConfigured() && 'TEST_DATABASE_URL not set';

async function appWithAssets(user) {
  process.env.DATABASE_URL = process.env.TEST_DATABASE_URL;
  process.env.AUTH_ENABLED = 'true';
  // Importing the assets router constructs BullMQ queues; they connect lazily,
  // and the list route only touches Postgres, so no Redis is needed here.
  const { default: assetsRouter } = await import('../../src/routes/assets.js?v=' + Date.now());
  const app = express();
  app.use(express.json());
  app.use((req, _res, next) => { req.user = user; next(); });
  app.use('/api/v1/assets', assetsRouter);
  return new Promise(r => {
    const srv = app.listen(0, '127.0.0.1', () =>
      r({ baseUrl: 'http://127.0.0.1:' + srv.address().port, close: () => new Promise(rs => srv.close(rs)) }));
  });
}

async function seed(pool) {
  const proj = async (n) => (await pool.query(`INSERT INTO projects (name, s3_prefix) VALUES ($1,$1) RETURNING id`, [n])).rows[0].id;
  const alpha = await proj('Alpha');
  const beta  = await proj('Beta');
  const asset = (pid, name) => pool.query(
    `INSERT INTO assets (project_id, filename, display_name, media_type, status)
     VALUES ($1, $2, $2, 'video', 'ready')`, [pid, name]);
  await asset(alpha, 'a1'); await asset(alpha, 'a2'); await asset(beta, 'b1');
  const admin  = { id: (await pool.query(`INSERT INTO users (username, password_hash, role) VALUES ('adm','x','admin') RETURNING id`)).rows[0].id, role: 'admin' };
  const scoped = { id: (await pool.query(`INSERT INTO users (username, password_hash, role) VALUES ('vu','x','viewer') RETURNING id`)).rows[0].id, role: 'viewer' };
  await pool.query(
    `INSERT INTO project_access (project_id, subject_type, subject_id, level) VALUES ($1,'user',$2,'view')`,
    [alpha, scoped.id]);
  return { alpha, beta, admin, scoped };
}

test('GET /assets returns only assets in granted projects for scoped users', { skip: SKIP }, async () => {
  const pool = await setupTestDb();
  process.env.DATABASE_URL = process.env.TEST_DATABASE_URL;
  try {
    const { admin, scoped } = await seed(pool);

    // Admin sees all three.
    let a = await appWithAssets(admin);
    let body = await (await fetch(a.baseUrl + '/api/v1/assets')).json();
    assert.equal(body.assets.length, 3, 'admin should see every asset');
    await a.close();

    // Scoped viewer (granted only Alpha) sees the two Alpha assets, not Beta's.
    let s = await appWithAssets(scoped);
    body = await (await fetch(s.baseUrl + '/api/v1/assets')).json();
    assert.equal(body.assets.length, 2, 'scoped user should see only granted-project assets');
    assert.ok(body.assets.every(x => x.display_name !== 'b1'), 'must not leak ungranted-project asset');
    await s.close();
  } finally { await pool.end(); }
});

test('GET /assets returns nothing for a user with no grants', { skip: SKIP }, async () => {
  const pool = await setupTestDb();
  process.env.DATABASE_URL = process.env.TEST_DATABASE_URL;
  try {
    await seed(pool);
    const nobody = { id: (await pool.query(`INSERT INTO users (username, password_hash, role) VALUES ('no','x','viewer') RETURNING id`)).rows[0].id, role: 'viewer' };
    const s = await appWithAssets(nobody);
    const body = await (await fetch(s.baseUrl + '/api/v1/assets')).json();
    assert.deepEqual(body, { assets: [], total: 0 });
    await s.close();
  } finally { await pool.end(); }
});