/**
 * MetonaSqlark E2E — 真实 Chromium + OPFS 环境验证
 *
 * 覆盖：
 * 1. OPFS 持久化：写入 → 刷新页面 → 数据保留（跨页面生命周期）
 * 2. 优雅关闭后重开：数据完整
 * 3. 崩溃恢复：写入后强制终止（不 close）→ 重开 → WAL 重放数据完整
 * 4. 多标签页锁：页 A 持锁 → 页 B 打开同一库 → ARIA_LOCKED
 * 5. 加密库密码往返（真实 WebCrypto）
 * 6. 页面化 + OPFS 端到端
 * 7. repair() 自愈（真实文件系统）
 */
import { test, expect, type Page } from '@playwright/test';

const HARNESS = '/tests/e2e/harness.html';

async function openPage(page: Page): Promise<void> {
  await page.goto(HARNESS);
  await expect(page.locator('#status')).toHaveText('ready');
}

/** 在页面中执行 harness 方法（统一包装错误信息） */
async function run<T>(page: Page, method: string, args: unknown): Promise<T> {
  const result = await page.evaluate(
    ([m, a]) => (window as unknown as { __ms: Record<string, (o: unknown) => Promise<unknown>> }).__ms[m](a),
    [method, args] as const,
  );
  return result as T;
}

/** 强制"崩溃"当前页面：终止渲染进程（不触发 beforeunload/close） */
async function crashPage(page: Page): Promise<void> {
  await page.evaluate(() => {
    // 模拟崩溃：直接终止。使用 CDP Page.crash 等价效果 —— 通过无限循环让渲染进程被杀
    // 但更可靠的方式是关闭页面连接（Playwright 无 Page.crash 公共 API），
    // 这里用 context.close 前先把页面里的清理路径断开：
    const win = window as unknown as { __ms: { __db: unknown } | null };
    // 断开所有引用（模拟进程死亡：不调用 close）
    win.__ms = null;
  });
  await page.close();
}

test.describe('OPFS 真实环境', () => {
  test('写入 → 刷新页面 → 数据保留（持久化）', async ({ page }) => {
    await openPage(page);
    await run(page, 'open', { name: 'e2e-persist', diskEngine: 'opfs' });
    await run(page, 'createTable', {
      table: 'users',
      columns: [
        { name: 'id', type: 'string', primaryKey: true },
        { name: 'name', type: 'string' },
        { name: 'age', type: 'number' },
      ],
    });
    await run(page, 'insert', {
      table: 'users',
      rows: [
        { id: '1', name: 'Alice', age: 30 },
        { id: '2', name: 'Bob', age: 25 },
      ],
    });
    expect(await run<{ count: number }>(page, 'count', { table: 'users' })).toEqual({ count: 2 });

    // 刷新页面（完全重新加载，OPFS 数据必须保留）
    await page.reload();
    await expect(page.locator('#status')).toHaveText('ready');
    await run(page, 'open', { name: 'e2e-persist', diskEngine: 'opfs' });
    const res = await run<{ count: number }>(page, 'count', { table: 'users' });
    expect(res.count).toBe(2);
    const found = await run<{ rows: Record<string, unknown>[] }>(page, 'find', {
      table: 'users', where: { id: '1' },
    });
    expect(found.rows[0].name).toBe('Alice');
    await run(page, 'close');
  });

  test('优雅关闭后重开：数据完整', async ({ page }) => {
    await openPage(page);
    await run(page, 'open', { name: 'e2e-close-reopen', diskEngine: 'opfs' });
    await run(page, 'createTable', {
      table: 't', columns: [{ name: 'id', type: 'string', primaryKey: true }],
    });
    for (let i = 0; i < 20; i++) {
      await run(page, 'insert', { table: 't', rows: [{ id: `r-${i}` }] });
    }
    await run(page, 'close');

    await run(page, 'open', { name: 'e2e-close-reopen', diskEngine: 'opfs' });
    expect(await run<{ count: number }>(page, 'count', { table: 't' })).toEqual({ count: 20 });
    await run(page, 'close');
  });

  test('崩溃恢复：写入后强制终止 → 重开 WAL 重放数据完整', async ({ page }) => {
    await openPage(page);
    // 不 checkpoint（interval 极大），全部写入留在 WAL
    await run(page, 'open', {
      name: 'e2e-crash', diskEngine: 'opfs', checkpointInterval: 999999999,
    });
    await run(page, 'createTable', {
      table: 'logs', columns: [{ name: 'id', type: 'string', primaryKey: true }],
    });
    const total = 50;
    for (let i = 0; i < total; i++) {
      await run(page, 'insert', { table: 'logs', rows: [{ id: `log-${i}` }] });
    }
    // 模拟崩溃：直接终止页面（不调用 close → 不 checkpoint）
    await crashPage(page);

    // 新页面重开：WAL 重放
    const page2 = await page.context().newPage();
    await openPage(page2);
    await run(page2, 'open', {
      name: 'e2e-crash', diskEngine: 'opfs', checkpointInterval: 999999999,
    });
    const res = await run<{ count: number }>(page2, 'count', { table: 'logs' });
    expect(res.count).toBe(total);
    await run(page2, 'close');
    await page2.close();
  });

  test('多标签页锁：第二个标签页打开同一库 → ARIA_LOCKED', async ({ page }) => {
    await openPage(page);
    await run(page, 'open', { name: 'e2e-lock', diskEngine: 'opfs' });
    await run(page, 'createTable', {
      table: 't', columns: [{ name: 'id', type: 'string', primaryKey: true }],
    });

    // 第二个标签页尝试打开同一库
    const page2 = await page.context().newPage();
    await openPage(page2);
    const err = await page2.evaluate(async () => {
      try {
        await (window as unknown as { __ms: { open: (o: unknown) => Promise<unknown> } }).__ms.open(
          { name: 'e2e-lock', diskEngine: 'opfs' },
        );
        return { ok: true };
      } catch (e) {
        return { ok: false, code: (e as { code?: string }).code, msg: (e as Error).message };
      }
    });
    expect(err.ok).toBe(false);
    expect((err as { code?: string }).code).toBe('ARIA_LOCKED');

    // 第一个标签页关闭后 → 第二标签页可打开
    await run(page, 'close');
    const retry = await page2.evaluate(async () => {
      const ms = (window as unknown as { __ms: { open: (o: unknown) => Promise<unknown>; close: () => Promise<unknown> } }).__ms;
      await ms.open({ name: 'e2e-lock', diskEngine: 'opfs' });
      return { ok: true };
    });
    expect(retry.ok).toBe(true);
    await run(page2, 'close');
    await page2.close();
  });

  test('加密库：密码往返（真实 WebCrypto AES-GCM）', async ({ page }) => {
    await openPage(page);
    await run(page, 'open', { name: 'e2e-enc', diskEngine: 'opfs', encryptionPassword: 'correct-horse' });
    await run(page, 'createTable', {
      table: 'secrets',
      columns: [
        { name: 'id', type: 'string', primaryKey: true },
        { name: 'payload', type: 'string' },
      ],
    });
    await run(page, 'insert', {
      table: 'secrets',
      rows: [{ id: 's1', payload: 'top-secret-content' }],
    });
    await run(page, 'close');

    // 错误密码 → 打开失败
    const page2 = await page.context().newPage();
    await openPage(page2);
    const err = await page2.evaluate(async () => {
      try {
        await (window as unknown as { __ms: { open: (o: unknown) => Promise<unknown> } }).__ms.open(
          { name: 'e2e-enc', diskEngine: 'opfs', encryptionPassword: 'wrong-password' },
        );
        return { ok: true };
      } catch (e) {
        return { ok: false, code: (e as { code?: string }).code };
      }
    });
    expect((err as { code?: string }).code).toBe('ARIA_DECRYPT_ERROR');

    // 正确密码 → 数据完整
    await run(page2, 'open', { name: 'e2e-enc', diskEngine: 'opfs', encryptionPassword: 'correct-horse' });
    const found = await run<{ rows: Record<string, unknown>[] }>(page2, 'find', {
      table: 'secrets', where: { id: 's1' },
    });
    expect(found.rows[0].payload).toBe('top-secret-content');
    await run(page2, 'close');
    await page2.close();
  });

  test('OPFS 页面化端到端：大数据量 + 二级索引查询', async ({ page }) => {
    await openPage(page);
    await run(page, 'open', { name: 'e2e-paged', diskEngine: 'opfs' });
    await run(page, 'createTable', {
      table: 'docs',
      columns: [
        { name: 'id', type: 'string', primaryKey: true },
        { name: 'tag', type: 'string', index: true },
        { name: 'body', type: 'string' },
      ],
    });
    const total = 100;
    for (let batch = 0; batch < 5; batch++) {
      const rows = [];
      for (let i = 0; i < 20; i++) {
        const idx = batch * 20 + i;
        rows.push({ id: `d-${idx}`, tag: idx % 3 === 0 ? 'red' : 'blue', body: '页面化端到端内容'.repeat(30) });
      }
      await run(page, 'insert', { table: 'docs', rows });
    }
    expect(await run<{ count: number }>(page, 'count', { table: 'docs' })).toEqual({ count: total });

    // 二级索引查询（真实浏览器中走 LSM 索引）
    const reds = await run<{ rows: Record<string, unknown>[] }>(page, 'find', {
      table: 'docs', where: { tag: 'red' },
    });
    expect(reds.rows.length).toBeGreaterThan(0);

    // SQL 查询
    const sql = await run<{ rows: Record<string, unknown>[] }>(page, 'query', {
      sql: 'SELECT COUNT(*) AS n FROM docs WHERE tag = \'red\'',
    });
    expect(Number(sql.rows[0].n)).toBe(reds.rows.length);

    await run(page, 'close');
  });

  test('repair() 自愈（真实文件系统）', async ({ page }) => {
    await openPage(page);
    await run(page, 'open', { name: 'e2e-repair', diskEngine: 'opfs' });
    await run(page, 'createTable', {
      table: 't',
      columns: [
        { name: 'id', type: 'string', primaryKey: true },
        { name: 'v', type: 'string' },
      ],
    });
    await run(page, 'insert', { table: 't', rows: [{ id: 'a', v: 'keep-me' }] });
    // 通过 SQL 触发 checkpoint + 手动 repair
    await run(page, 'repair');
    expect(await run<{ count: number }>(page, 'count', { table: 't' })).toEqual({ count: 1 });
    // clearAll 后重建表（表结构随 clearAll 清空）
    await run(page, 'clearAll');
    await run(page, 'createTable', {
      table: 't',
      columns: [
        { name: 'id', type: 'string', primaryKey: true },
        { name: 'v', type: 'string' },
      ],
    });
    expect(await run<{ count: number }>(page, 'count', { table: 't' })).toEqual({ count: 0 });
    await run(page, 'close');
  });
});