const assert = require('assert');
const fs = require('fs');
const os = require('os');
const path = require('path');
const express = require('express');

const tempDir = fs.mkdtempSync(path.join(os.tmpdir(), 'batch-account-delete-'));
const Config = require('../src/core/config');
Config.DATA_DIR = tempDir;
Config.DB_PATH = path.join(tempDir, 'accounts.db');
const database = require('../src/core/database');
const bitApi = require('../src/core/bit_api');
const originalGetApi = bitApi.getApi;
const originalDeleteBrowsersBatch = bitApi.deleteBrowsersBatch;

(async () => {
  let server = null;
  try {
    database.initDB();
    database.upsertAccount({ email: 'first@example.com', browser_id: 'browser-1' });
    database.upsertAccount({ email: 'second@example.com', browser_id: 'browser-2' });
    database.upsertAccount({ email: 'without-browser@example.com' });

    let deletedBrowserIds = [];
    bitApi.getApi = () => ({
      request: async () => ({ success: true, data: { remark: '' } }),
    });
    bitApi.deleteBrowsersBatch = async browserIds => {
      deletedBrowserIds = [...browserIds];
      return { successCount: browserIds.length, failCount: 0, results: [] };
    };

    delete require.cache[require.resolve('../src/routes/accounts')];
    const accountsRouter = require('../src/routes/accounts');
    const app = express();
    app.use(express.json());
    app.use('/api/accounts', accountsRouter);
    await new Promise(resolve => {
      server = app.listen(0, '127.0.0.1', resolve);
    });

    const address = server.address();
    const response = await fetch(`http://127.0.0.1:${address.port}/api/accounts`, {
      method: 'DELETE',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({
        emails: ['first@example.com', 'second@example.com', 'without-browser@example.com'],
      }),
    });
    const result = await response.json();

    assert.strictEqual(response.ok, true);
    assert.strictEqual(result.count, 3, '应批量删除所选账号及其浏览器编号');
    assert.strictEqual(result.browsersFound, 2);
    assert.strictEqual(result.browsersDeleted, 2, '应返回实际删除的比特浏览器窗口数');
    assert.strictEqual(result.browserDeleteFailed, 0);
    assert.deepStrictEqual(deletedBrowserIds.sort(), ['browser-1', 'browser-2']);
    assert.strictEqual(database.getAccount('first@example.com'), null);
    assert.strictEqual(database.getAccount('second@example.com'), null);
    assert.strictEqual(database.getAccount('without-browser@example.com'), null);

    console.log('batch_account_delete.test.js: PASS');
  } finally {
    if (server) await new Promise(resolve => server.close(resolve));
    bitApi.getApi = originalGetApi;
    bitApi.deleteBrowsersBatch = originalDeleteBrowsersBatch;
    try { database.getDb().close(); } catch (_) {}
    fs.rmSync(tempDir, { recursive: true, force: true });
  }
})().catch(error => {
  console.error(error);
  process.exitCode = 1;
});