import { test, expect } from '@playwright/test';

const mockTasks = {
  code: 200,
  data: {
    records: [
      {
        id: 1,
        taskNum: 'T001',
        taskName: '学习 Vue3 组合式 API',
        taskDescription: '掌握 Composition API 的核心概念',
        taskPriority: 5,
        materialUrl: 'https://vuejs.org/guide',
        lastLearningStatus: '进行中',
      },
      {
        id: 2,
        taskNum: 'T002',
        taskName: 'TypeScript 类型体操',
        taskDescription: '练习 TypeScript 高级类型',
        taskPriority: 3,
        materialUrl: '',
        lastLearningStatus: '未开始',
      },
    ],
  },
};
const mockTasksEmpty = { code: 200, data: { records: [] } };
const mockFeed = { code: 200, data: [] };

const authAndNavigate = async (page: any) => {
  await page.goto('/login');
  await page.evaluate(() => localStorage.setItem('isLoggedIn', 'true'));
};

test.describe('Study page', () => {
  test.beforeEach(async ({ page }) => {
    await page.route('**/api/tasks**', (route) => {
      const url = route.request().url();
      if (url.includes('/tasks') && !url.includes('/tasks/')) {
        return route.fulfill({
          status: 200,
          contentType: 'application/json',
          body: JSON.stringify(mockTasks),
        });
      }
      return route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify({ code: 200, data: {} }),
      });
    });
    await page.route('**/api/review/feed**', (route) =>
      route.fulfill({ status: 200, contentType: 'application/json', body: JSON.stringify(mockFeed) }),
    );

    await authAndNavigate(page);
    await page.goto('/study');
    await page.waitForSelector('.study-page', { timeout: 10_000 });
  });

  test('displays task list with names and priorities', async ({ page }) => {
    const taskItems = page.locator('.task-list-item');
    await expect(taskItems).toHaveCount(2);
    await expect(taskItems.first().locator('.task-name')).toContainText('学习 Vue3 组合式 API');
    await expect(taskItems.nth(1).locator('.task-name')).toContainText('TypeScript 类型体操');
  });

  test('selecting a task shows its details', async ({ page }) => {
    const taskItems = page.locator('.task-list-item');
    await taskItems.nth(1).click();
    await expect(page.locator('.detail-head h3')).toContainText('TypeScript 类型体操');
  });

  test('clicking add navigates to add-task form', async ({ page }) => {
    await page.locator('.action-card').locator('button', { hasText: '添加任务' }).click();
    await expect(page).toHaveURL(/\/add-task/);
  });

  test('clicking update navigates to update-task form', async ({ page }) => {
    await page.locator('.action-card').locator('button', { hasText: '更新任务' }).click();
    await expect(page).toHaveURL(/\/update-task/);
  });

  test('delete task removes it from the list', async ({ page }) => {
    await page.route('**/api/tasks/1', (route) =>
      route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify({ code: 200, message: '删除成功' }),
      }),
    );

    await page.locator('.action-card').locator('button', { hasText: '删除任务' }).click();
    await expect(page.locator('.task-list-item')).toHaveCount(1, { timeout: 5000 });
  });

  test('shows empty state when no tasks', async ({ page }) => {
    await page.route('**/api/tasks**', (route) =>
      route.fulfill({
        status: 200,
        contentType: 'application/json',
        body: JSON.stringify(mockTasksEmpty),
      }),
    );

    await page.goto('/study');
    await page.waitForSelector('.study-page', { timeout: 10_000 });
    await expect(page.locator('.el-empty')).toBeVisible({ timeout: 5000 });
  });
});