// services/api/test/http-user-source.spec.ts —— HttpUserSource 单测（G4 对接）。
// 覆盖：跨页一人多档全局去重、数值水位游标不当页码（回归）、分块续翻 p:N、
// 鉴权/失败路径、无手机号跳过。fetch 全程 mock，不发真实请求。
import { HttpUserSource } from '../src/user-sync/http-user-source';

interface OpenV1User {
  id: number;
  sn: string;
  name: string;
  sex: number | null;
  email: string;
  phone: string;
  avatar: string | null;
  status: number;
  user_type: number;
  manager_id: number | null;
  company_id: number;
  union_id: string | null;
  created_at: string;
  updated_at: string;
  company_name: string;
  company_abbr: string;
  company_tenant_key: string;
  feishu_open_id: string | null;
  feishu_user_id: string | null;
  feishu_tenant_key: string | null;
  last_login_at: string | null;
  roles: string[];
}

const BASE_USER: OpenV1User = {
  id: 1, sn: 'S1', name: '张三', sex: null, email: 'z@example.com',
  phone: '13800000001', avatar: null, status: 1, user_type: 1, manager_id: null,
  company_id: 1, union_id: null, created_at: '2026-09-01T00:00:00Z',
  updated_at: '2026-09-20T00:00:00Z', company_name: 'X公司', company_abbr: 'X',
  company_tenant_key: 'tk', feishu_open_id: null, feishu_user_id: null,
  feishu_tenant_key: null, last_login_at: null, roles: ['user'],
};

const user = (over: Partial<OpenV1User> = {}): OpenV1User => ({ ...BASE_USER, ...over });

const okBody = (items: OpenV1User[], total: number, page = 1, pageSize = 200) => ({
  success: true,
  message: 'ok',
  data: { items, total, page, page_size: pageSize },
});

/** 最小 fetch Response 替身（仅适配器用到的字段）。 */
function fakeRes(status: number, body: unknown) {
  return {
    status,
    ok: status >= 200 && status < 300,
    json: async () => body,
    text: async () => JSON.stringify(body),
  };
}

const originalFetch = global.fetch;
const originalEnv = {
  url: process.env.OPEN_API_USERS_URL,
  key: process.env.OPEN_API_USERS_KEY,
};

describe('HttpUserSource（uniservice /open/v1/users 适配器）', () => {
  // 注意不能用大写 URL 作变量名——会遮蔽全局 URL 构造器。
  const SOURCE_URL = 'https://uniservice.example/open/v1/users';
  let source: HttpUserSource;
  let fetchMock: jest.Mock;

  beforeEach(() => {
    process.env.OPEN_API_USERS_URL = SOURCE_URL;
    process.env.OPEN_API_USERS_KEY = 'test-key';
    source = new HttpUserSource();
    fetchMock = jest.fn();
    global.fetch = fetchMock as unknown as typeof fetch;
  });

  afterEach(() => {
    global.fetch = originalFetch;
    // 保存/恢复而非删除——避免清掉开发者本地 .env 装载的同名值。
    if (originalEnv.url === undefined) {
      delete process.env.OPEN_API_USERS_URL;
    } else {
      process.env.OPEN_API_USERS_URL = originalEnv.url;
    }
    if (originalEnv.key === undefined) {
      delete process.env.OPEN_API_USERS_KEY;
    } else {
      process.env.OPEN_API_USERS_KEY = originalEnv.key;
    }
  });

  it('跨上游页的一人多档按 phone 全局去重，保留 updated_at 最新行；字段映射正确', async () => {
    // echo page_size=2（服务端收窄）：page1=[id1,id3]、page2=[id2]——同 phone 两行分落两页。
    fetchMock
      .mockResolvedValueOnce(fakeRes(200, okBody([
        user({ id: 1, name: '张三新档', updated_at: '2026-09-21T00:00:00Z' }),
        user({ id: 3, name: '李四', phone: '13800000002', sn: 'S3', updated_at: '2026-09-18T00:00:00Z' }),
      ], 3, 1, 2)))
      .mockResolvedValueOnce(fakeRes(200, okBody([
        user({ id: 2, name: '张三旧档', phone: '13800000001', status: 2, updated_at: '2026-09-19T00:00:00Z' }),
      ], 3, 2, 2)));

    const page = await source.listPage();

    // 请求形状：page=1 起、page_size=200、status=all、X-Api-Key 头。
    const firstUrl = new URL(fetchMock.mock.calls[0][0] as string);
    expect(firstUrl.searchParams.get('page')).toBe('1');
    expect(firstUrl.searchParams.get('page_size')).toBe('200');
    expect(firstUrl.searchParams.get('status')).toBe('all');
    expect((fetchMock.mock.calls[0][1] as { headers: Record<string, string> }).headers['X-Api-Key']).toBe('test-key');

    // 去重后 2 人；13800000001 保留 id=1（updated_at 最新），status=1 → active。
    expect(page.items).toHaveLength(2);
    expect(page.nextCursor).toBeNull();
    const kept = page.items.find((i) => i.loginAccount === '13800000001');
    expect(kept).toMatchObject({
      externalUserId: '1',
      displayName: '张三新档',
      sourceStatus: 'active',
      sourceVersion: Math.floor(Date.parse('2026-09-21T00:00:00Z') / 1000),
    });
    expect(kept?.updatedAt).toEqual(new Date('2026-09-21T00:00:00Z'));
    expect(page.items.find((i) => i.externalUserId === '2')).toBeUndefined();
    expect(source.sourceSystem).toBe('uniservice');
  });

  it('数值水位游标不当页码：cursor="1758520000" 仍从第 1 页全量拉取（回归）', async () => {
    fetchMock.mockResolvedValueOnce(fakeRes(200, okBody([user()], 1)));

    const page = await source.listPage('1758520000');

    const url = new URL(fetchMock.mock.calls[0][0] as string);
    expect(url.searchParams.get('page')).toBe('1');
    expect(page.items).toHaveLength(1);
    expect(page.nextCursor).toBeNull();
  });

  it('分块续翻：>200 行切两块，p:2 用缓存不再回源；新批（水位/空 cursor）重新全量拉', async () => {
    const many = Array.from({ length: 205 }, (_, i) =>
      user({ id: i + 1, phone: `1380000${String(i).padStart(4, '0')}` }),
    );
    fetchMock
      .mockResolvedValueOnce(fakeRes(200, okBody(many.slice(0, 200), 205)))
      .mockResolvedValueOnce(fakeRes(200, okBody(many.slice(200), 205, 2)));

    const first = await source.listPage();
    expect(first.items).toHaveLength(200);
    expect(first.nextCursor).toBe('p:2');

    const second = await source.listPage('p:2');
    expect(second.items).toHaveLength(5);
    expect(second.nextCursor).toBeNull();
    expect(fetchMock).toHaveBeenCalledTimes(2); // 续翻走缓存

    // 新一批（引擎传数值水位）→ 重新全量拉取。
    fetchMock.mockResolvedValueOnce(fakeRes(200, okBody([], 0)));
    const fresh = await source.listPage('999');
    expect(fresh.items).toHaveLength(0);
    expect(fetchMock).toHaveBeenCalledTimes(3);
  });

  it('失败路径：401 / HTTP 500 / success=false / env 缺失各自抛错', async () => {
    fetchMock.mockResolvedValueOnce(fakeRes(401, { success: false, message: 'Invalid API Key', error_code: 'INVALID_API_KEY' }));
    await expect(source.listPage()).rejects.toThrow(/Invalid API Key|鉴权失败/);

    fetchMock.mockResolvedValueOnce(fakeRes(500, { success: false, message: 'boom' }));
    await expect(source.listPage()).rejects.toThrow(/HTTP 500/);

    fetchMock.mockResolvedValueOnce(fakeRes(200, { success: false, message: '查询失败' }));
    await expect(source.listPage()).rejects.toThrow('查询失败');

    delete process.env.OPEN_API_USERS_KEY;
    await expect(source.listPage()).rejects.toThrow(/OPEN_API_USERS/);
  });

  it('无手机号行跳过（warn 不抛），有手机号行照常', async () => {
    fetchMock.mockResolvedValueOnce(
      fakeRes(200, okBody([user({ id: 1, phone: '' }), user({ id: 2, phone: '13900000002' })], 2)),
    );
    const page = await source.listPage();
    expect(page.items).toHaveLength(1);
    expect(page.items[0]?.externalUserId).toBe('2');
  });
});