import { Share } from 'react-native';
import { beforeEach, describe, expect, test, vi } from 'vitest';

import {
  HOST_BRIDGE_PROTOCOL,
  HOST_BRIDGE_VERSION,
  type HostBridgeRequest,
} from '../../../../packages/shared/src/contracts/hostBridge';
import {
  openShare,
  resetMobileHostBridgeShareTargetForTest,
  setMobileHostBridgeShareTarget,
} from './share';

vi.mock('react-native', () => ({
  Share: {
    share: vi.fn(),
  },
}));

function request(
  method: 'share.open' | 'share.setTarget',
  payload?: unknown,
): HostBridgeRequest {
  return {
    bridge: HOST_BRIDGE_PROTOCOL,
    version: HOST_BRIDGE_VERSION,
    id: `${method}-request`,
    method,
    payload,
  };
}

beforeEach(() => {
  vi.mocked(Share.share).mockReset();
  resetMobileHostBridgeShareTargetForTest();
});

describe('mobile share helpers', () => {
  test('opens the native share sheet with normalized explicit payload', async () => {
    const response = await openShare(
      request('share.open', {
        title: '测试作品',
        message: '来玩这个作品',
        url: 'https://app.genarrative.world/works/detail?work=PZ-1',
      }),
    );

    expect(response).toEqual({
      bridge: HOST_BRIDGE_PROTOCOL,
      version: HOST_BRIDGE_VERSION,
      id: 'share.open-request',
      ok: true,
      result: true,
    });
    expect(Share.share).toHaveBeenCalledWith({
      title: '测试作品',
      message:
        '来玩这个作品\nhttps://app.genarrative.world/works/detail?work=PZ-1',
      url: 'https://app.genarrative.world/works/detail?work=PZ-1',
    });
  });

  test('uses cached work target when share.open has no explicit payload', async () => {
    const targetResponse = setMobileHostBridgeShareTarget(
      request('share.setTarget', {
        target: {
          type: 'genarrative:share-target',
          payload: {
            title: '暖灯猫街',
            message: '来玩这个作品',
            work: 'PZ-00000001',
          },
        },
      }),
    );

    expect(targetResponse).toEqual({
      bridge: HOST_BRIDGE_PROTOCOL,
      version: HOST_BRIDGE_VERSION,
      id: 'share.setTarget-request',
      ok: true,
      result: true,
    });

    await expect(openShare(request('share.open'))).resolves.toMatchObject({
      ok: true,
      result: true,
    });
    expect(Share.share).toHaveBeenCalledWith({
      title: '暖灯猫街',
      message:
        '来玩这个作品\nhttps://app.genarrative.world/works/detail?work=PZ-00000001',
      url: 'https://app.genarrative.world/works/detail?work=PZ-00000001',
    });
  });

  test('keeps the previous cached target when a new target is missing or invalid', async () => {
    setMobileHostBridgeShareTarget(
      request('share.setTarget', {
        target: {
          type: 'genarrative:share-target',
          payload: {
            title: '暖灯猫街',
            work: 'PZ-00000001',
          },
        },
      }),
    );

    expect(() => setMobileHostBridgeShareTarget(request('share.setTarget', {})))
      .toThrowError('target is required');
    expect(() =>
      setMobileHostBridgeShareTarget(
        request('share.setTarget', {
          target: {},
        }),
      ),
    ).toThrowError('share target is required');
    expect(() =>
      setMobileHostBridgeShareTarget(
        request('share.setTarget', {
          target: {
            title: '危险作品',
            url: 'https://example.com/works/detail?work=PZ-1',
          },
        }),
      ),
    ).toThrowError('share target is invalid');

    await expect(openShare(request('share.open'))).resolves.toMatchObject({
      ok: true,
      result: true,
    });
    expect(Share.share).toHaveBeenCalledWith({
      title: '暖灯猫街',
      message: 'https://app.genarrative.world/works/detail?work=PZ-00000001',
      url: 'https://app.genarrative.world/works/detail?work=PZ-00000001',
    });
  });

  test('normalizes same-origin paths into public share URLs', async () => {
    await expect(
      openShare(
        request('share.open', {
          title: '测试作品',
          path: '/works/detail?work=PZ-2#play',
        }),
      ),
    ).resolves.toMatchObject({
      ok: true,
      result: true,
    });

    expect(Share.share).toHaveBeenCalledWith({
      title: '测试作品',
      message: 'https://app.genarrative.world/works/detail?work=PZ-2#play',
      url: 'https://app.genarrative.world/works/detail?work=PZ-2#play',
    });
  });

  test('maps native share sheet failures to stable host errors', async () => {
    vi.mocked(Share.share).mockRejectedValueOnce(new Error('native share failed'));

    await expect(
      openShare(
        request('share.open', {
          title: '测试作品',
          url: 'https://app.genarrative.world/works/detail?work=PZ-1',
        }),
      ),
    ).rejects.toMatchObject({
      code: 'host_error',
      message: 'share unavailable',
    });
  });

  test.each([
    'https://example.com/works/detail?work=PZ-1',
    '//example.com/works/detail?work=PZ-1',
    '//app.genarrative.world/works/detail?work=PZ-1',
    'javascript:alert(1)',
  ])('rejects unsafe explicit share URLs: %s', async (url) => {
    await expect(
      openShare(
        request('share.open', {
          title: '测试作品',
          url,
        }),
      ),
    ).rejects.toMatchObject({
      code: 'invalid_request',
      message: 'share target is invalid',
    });
    expect(Share.share).not.toHaveBeenCalled();
  });

  test('does not fall back to cached target when explicit payload is unsafe', async () => {
    setMobileHostBridgeShareTarget(
      request('share.setTarget', {
        target: {
          type: 'genarrative:share-target',
          payload: {
            title: '暖灯猫街',
            work: 'PZ-00000001',
          },
        },
      }),
    );

    await expect(
      openShare(
        request('share.open', {
          title: '测试作品',
          url: 'https://example.com/works/detail?work=PZ-1',
        }),
      ),
    ).rejects.toMatchObject({
      code: 'invalid_request',
      message: 'share target is invalid',
    });
    expect(Share.share).not.toHaveBeenCalled();
  });

  test('rejects empty share requests before opening native share sheet', async () => {
    await expect(openShare(request('share.open', {}))).rejects.toMatchObject({
      code: 'invalid_request',
      message: 'share target is required',
    });
    expect(Share.share).not.toHaveBeenCalled();
  });
});