import { afterEach, beforeEach, describe, expect, test, vi } from 'vitest';

import {
  clearStoredAccessToken,
  getStoredAccessToken,
  setStoredAccessToken,
} from './apiClient';
import {
  clearSignedAssetReadUrlCache,
  getSignedAssetReadUrl,
  resolveAssetReadUrl,
} from './assetReadUrlService';

function createLocalStorageMock() {
  const store = new Map<string, string>();

  return {
    getItem(key: string) {
      return store.has(key) ? store.get(key)! : null;
    },
    setItem(key: string, value: string) {
      store.set(key, String(value));
    },
    removeItem(key: string) {
      store.delete(key);
    },
    clear() {
      store.clear();
    },
  };
}

describe('assetReadUrlService', () => {
  beforeEach(() => {
    vi.stubGlobal('window', {
      localStorage: createLocalStorageMock(),
      dispatchEvent: vi.fn(),
    });
    clearSignedAssetReadUrlCache();
    clearStoredAccessToken({ emit: false });
    setStoredAccessToken('test-access-token', { emit: false });
    vi.restoreAllMocks();
  });

  afterEach(() => {
    clearStoredAccessToken({ emit: false });
    vi.useRealTimers();
  });

  test('resolveAssetReadUrl returns passthrough for absolute url', async () => {
    await expect(resolveAssetReadUrl('https://example.com/demo.png')).resolves.toBe(
      'https://example.com/demo.png',
    );
  });

  test('resolveAssetReadUrl returns passthrough for data url', async () => {
    await expect(resolveAssetReadUrl('data:image/png;base64,abc')).resolves.toBe(
      'data:image/png;base64,abc',
    );
  });

  test('resolveAssetReadUrl exchanges legacy generated path for signed url', async () => {
    vi.spyOn(globalThis, 'fetch').mockResolvedValue(
      new Response(
        JSON.stringify({
          ok: true,
          data: {
            read: {
              objectKey: 'generated-characters/hero/visual/asset-01/master.png',
              signedUrl: 'https://signed.example.com/master.png',
              expiresAt: '2099-01-01T00:10:00Z',
            },
          },
          error: null,
          meta: {
            apiVersion: '2026-04-08',
            routeVersion: '2026-04-08',
            latencyMs: 1,
            timestamp: '2099-01-01T00:00:00Z',
          },
        }),
        {
          status: 200,
          headers: {
            'Content-Type': 'application/json',
          },
        },
      ),
    );

    await expect(
      resolveAssetReadUrl('/generated-characters/hero/visual/asset-01/master.png'),
    ).resolves.toBe('https://signed.example.com/master.png');

    expect(globalThis.fetch).toHaveBeenCalledTimes(1);
    expect(String(vi.mocked(globalThis.fetch).mock.calls[0]?.[0])).toContain(
      '/api/assets/read-url?',
    );
  });

  test('resolveAssetReadUrl normalizes generated object key without leading slash', async () => {
    vi.spyOn(globalThis, 'fetch').mockResolvedValue(
      new Response(
        JSON.stringify({
          ok: true,
          data: {
            read: {
              objectKey:
                'generated-puzzle-assets/puzzle-session-1/candidate-1/asset-1/image.png',
              signedUrl: 'https://signed.example.com/puzzle.png',
              expiresAt: '2099-01-01T00:10:00Z',
            },
          },
          error: null,
          meta: {
            apiVersion: '2026-04-08',
            routeVersion: '2026-04-08',
            latencyMs: 1,
            timestamp: '2099-01-01T00:00:00Z',
          },
        }),
        {
          status: 200,
          headers: {
            'Content-Type': 'application/json',
          },
        },
      ),
    );

    await expect(
      resolveAssetReadUrl(
        'generated-puzzle-assets/puzzle-session-1/candidate-1/asset-1/image.png',
      ),
    ).resolves.toBe('https://signed.example.com/puzzle.png');

    expect(String(vi.mocked(globalThis.fetch).mock.calls[0]?.[0])).toContain(
      'legacyPublicPath=%2Fgenerated-puzzle-assets%2Fpuzzle-session-1%2Fcandidate-1%2Fasset-1%2Fimage.png',
    );
  });

  test('resolveAssetReadUrl does not append cache busting query to OSS signed url', async () => {
    vi.spyOn(globalThis, 'fetch').mockResolvedValue(
      new Response(
        JSON.stringify({
          ok: true,
          data: {
            read: {
              objectKey:
                'generated-puzzle-assets/puzzle-session-1/candidate-1/asset-1/image.png',
              signedUrl:
                'https://bucket.oss-cn-beijing.aliyuncs.com/generated-puzzle-assets/puzzle.png?x-oss-signature=abc&x-oss-expires=600',
              expiresAt: '2099-01-01T00:10:00Z',
            },
          },
          error: null,
          meta: {
            apiVersion: '2026-04-08',
            routeVersion: '2026-04-08',
            latencyMs: 1,
            timestamp: '2099-01-01T00:00:00Z',
          },
        }),
        {
          status: 200,
          headers: {
            'Content-Type': 'application/json',
          },
        },
      ),
    );

    await expect(
      resolveAssetReadUrl(
        '/generated-puzzle-assets/puzzle-session-1/candidate-1/asset-1/image.png',
        { refreshKey: 'latest-result' },
      ),
    ).resolves.toBe(
      'https://bucket.oss-cn-beijing.aliyuncs.com/generated-puzzle-assets/puzzle.png?x-oss-signature=abc&x-oss-expires=600',
    );
  });

  test('getSignedAssetReadUrl reuses cached signed url before expiry', async () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2099-01-01T00:00:00Z'));

    vi.spyOn(globalThis, 'fetch').mockResolvedValue(
      new Response(
        JSON.stringify({
          ok: true,
          data: {
            read: {
              objectKey: 'generated-custom-world-scenes/profile-1/landmark-1/scene.png',
              signedUrl: 'https://signed.example.com/scene.png',
              expiresAt: '2099-01-01T00:10:00Z',
            },
          },
          error: null,
          meta: {
            apiVersion: '2026-04-08',
            routeVersion: '2026-04-08',
            latencyMs: 1,
            timestamp: '2099-01-01T00:00:00Z',
          },
        }),
        {
          status: 200,
          headers: {
            'Content-Type': 'application/json',
          },
        },
      ),
    );

    const first = await getSignedAssetReadUrl({
      legacyPublicPath: '/generated-custom-world-scenes/profile-1/landmark-1/scene.png',
    });
    const second = await getSignedAssetReadUrl({
      legacyPublicPath: '/generated-custom-world-scenes/profile-1/landmark-1/scene.png',
    });

    expect(first).toBe('https://signed.example.com/scene.png');
    expect(second).toBe(first);
    expect(globalThis.fetch).toHaveBeenCalledTimes(1);
  });

  test('getSignedAssetReadUrl caches not-found failures for the same legacy path', async () => {
    vi.spyOn(globalThis, 'fetch').mockResolvedValue(
      new Response(
        JSON.stringify({
          ok: false,
          data: null,
          error: {
            code: 'NOT_FOUND',
            message: '对象不存在',
          },
          meta: {
            apiVersion: '2026-04-08',
            routeVersion: '2026-04-08',
            latencyMs: 1,
            timestamp: '2099-01-01T00:00:00Z',
          },
        }),
        {
          status: 404,
          headers: {
            'Content-Type': 'application/json',
          },
        },
      ),
    );

    await expect(
      getSignedAssetReadUrl({
        legacyPublicPath: '/generated-characters/hero/missing/master.png',
      }),
    ).rejects.toThrow();
    await expect(
      getSignedAssetReadUrl({
        legacyPublicPath: '/generated-characters/hero/missing/master.png',
      }),
    ).rejects.toThrow('资源不存在或暂时不可读取');

    expect(globalThis.fetch).toHaveBeenCalledTimes(1);
  });

  test('getSignedAssetReadUrl 401 不会清空全局登录态', async () => {
    vi.spyOn(globalThis, 'fetch').mockResolvedValue(
      new Response(
        JSON.stringify({
          ok: false,
          data: null,
          error: {
            code: 'UNAUTHORIZED',
            message: '登录状态已失效',
          },
          meta: {
            apiVersion: '2026-04-08',
            routeVersion: '2026-04-08',
            latencyMs: 1,
            timestamp: '2099-01-01T00:00:00Z',
          },
        }),
        {
          status: 401,
          headers: {
            'Content-Type': 'application/json',
          },
        },
      ),
    );

    await expect(
      getSignedAssetReadUrl({
        legacyPublicPath:
          '/generated-puzzle-assets/puzzle-session-1/candidate-1/asset-1/image.png',
      }),
    ).rejects.toThrow('登录状态已失效');

    expect(globalThis.fetch).toHaveBeenCalledTimes(1);
    expect(getStoredAccessToken()).toBe('test-access-token');
    expect(window.dispatchEvent).not.toHaveBeenCalled();
  });
});