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

const identity = { student_no: '9000000001', name: '学生甲', topic: '机器人项目' };
const mixed = () => ({ relative_dir: 'test/student', student_no: '', name: '', topic: '',
  status: 'needs_confirmation', folder_identity: {}, detected_identity: {}, missing: [],
  warnings: ['不同材料封面的学号不一致，请核对后填写'], files: [
    { relative_path: 'test/student/最终报告.pdf', category: 'final_report', status: 'recognized',
      sha256: 'a'.repeat(64), detected_identity: identity },
    { relative_path: 'test/student/汇报PPT.pdf', category: 'presentation', status: 'needs_confirmation',
      sha256: 'b'.repeat(64), detected_identity: { student_no: '9000000002', name: '学生乙', topic: '另一项目' } },
  ] });

async function setup(page: Page, project: any) {
  const imports: any[] = [];
  await page.route('**/api/**', async route => {
    const request = route.request();
    const path = new URL(request.url()).pathname.replace(/^\/api/, '');
    let data: any = [];
    if (path === '/courses') data = [{ id: 1, name: '课程甲' }];
    if (path === '/courses/1/versions') data = [{ id: 1, published: true, version: 1, title: '初始版本' }];
    if (path === '/import/scan') data = { projects: [project] };
    if (path === '/import/confirm') { imports.push(request.postDataJSON()); data = { project_ids: [12] }; }
    await route.fulfill({ json: data });
  });
  await page.goto('/?page=import');
  await page.getByRole('button', { name: '扫描此目录', exact: true }).click();
  await choose(page, '导入课程', '课程甲');
  await choose(page, '导入课程版本', /初始版本/);
  return imports;
}

async function choose(page: Page, label: string, option: string | RegExp) {
  await page.keyboard.press('Escape');
  await expect(page.locator('.ant-select-dropdown:visible')).toHaveCount(0);
  const input = page.getByRole('combobox', { name: label, exact: true });
  await input.focus(); await input.press('ArrowDown');
  const listId = await input.getAttribute('aria-controls');
  const dropdown = page.locator('.ant-select-dropdown').filter({ has: page.locator(`[id="${listId}"]`) });
  await expect(dropdown).toBeVisible();
  await dropdown.getByText(option, { exact: typeof option === 'string' }).click();
}

test('invalid student number explains why confirm is disabled and recovers after editing', async ({ page }) => {
  const project = { ...mixed(), student_no: '1', name: '1', topic: '1' };
  delete (project as any).folder_identity;
  for (const file of project.files) delete (file as any).detected_identity;
  await setup(page, project);
  await expect(page.getByText(/学号必须为5–20位数字/)).toBeVisible();
  await expect(page.getByRole('button', { name: '确认导入', exact: true })).toBeDisabled();
  await page.getByRole('textbox', { name: '学号 test/student', exact: true }).fill('9000000001');
  await expect(page.getByRole('button', { name: '确认导入', exact: true })).toBeEnabled();
});

test('ignoring a foreign PPT recalculates identity and submits the intended project', async ({ page }) => {
  const imports = await setup(page, mixed());
  await expect(page.getByText('学生乙（9000000002）', { exact: true })).toBeVisible();
  await expect(page.getByText(/学号冲突：/)).toBeVisible();
  await choose(page, '处理 test/student/汇报PPT.pdf', '忽略');
  await expect(page.getByRole('textbox', { name: '学号 test/student', exact: true })).toHaveValue(identity.student_no);
  await expect(page.getByRole('textbox', { name: '姓名 test/student', exact: true })).toHaveValue(identity.name);
  await expect(page.getByText(/学号冲突：/)).toHaveCount(0);
  await expect(page.getByRole('button', { name: '确认导入', exact: true })).toBeEnabled();
  await page.getByRole('button', { name: '确认导入', exact: true }).click();
  await expect.poll(() => imports.length).toBe(1);
  expect(imports[0].projects[0].student_no).toBe(identity.student_no);
  expect(imports[0].projects[0].files[1].status).toBe('ignored');
});

test('file selection preserves manual corrections until the user chooses cover values', async ({ page }) => {
  await setup(page, mixed());
  const name = page.getByRole('textbox', { name: '姓名 test/student', exact: true });
  await name.fill('人工修正姓名');
  await choose(page, '处理 test/student/汇报PPT.pdf', '忽略');
  await expect(name).toHaveValue('人工修正姓名');
  await page.getByRole('button', { name: '使用所选资料的封面信息', exact: true }).click();
  await expect(name).toHaveValue(identity.name);
});

test('ignoring all files gives an explicit selected-material error', async ({ page }) => {
  await setup(page, mixed());
  await choose(page, '处理 test/student/汇报PPT.pdf', '忽略');
  await choose(page, '处理 test/student/最终报告.pdf', '忽略');
  await expect(page.getByText(/至少选择1份资料/)).toBeVisible();
  await expect(page.getByRole('button', { name: '确认导入', exact: true })).toBeDisabled();
});

test('unknown and duplicate material types explain the block before sending a request', async ({ page }) => {
  const project = mixed();
  project.files[1].category = 'unknown';
  project.files[1].detected_identity = identity;
  await setup(page, project);
  await expect(page.getByText(/请选择材料类型/)).toBeVisible();
  await expect(page.getByRole('button', { name: '确认导入', exact: true })).toBeDisabled();
  await choose(page, '材料类型 test/student/汇报PPT.pdf', '最终报告');
  await expect(page.getByText(/最终报告选了2份/)).toBeVisible();
  await choose(page, '处理 test/student/汇报PPT.pdf', '忽略');
  await expect(page.getByRole('button', { name: '确认导入', exact: true })).toBeEnabled();
});