import { beforeEach, describe, expect, it, vi } from 'vitest';
import {
  copyBlock,
  createBlock,
  createBlockGroup,
  deleteBlock,
  deleteBlockGroup,
  getBlock,
  getBlockGroups,
  getBlockItems,
  getBlockItemsWithMeta,
  getBlocks,
  previewBlock,
  replaceBlock,
  searchCollections,
  searchSmartCollections,
  searchTelevisionSeasons,
  searchTelevisionShows,
  type ReplaceBlockRequest
} from './blocks';

function jsonResponse(body: unknown, status = 200): Response {
  return new Response(JSON.stringify(body), { headers: { 'Content-Type': 'application/json' }, status });
}

function noContent(): Response {
  return new Response(null, { status: 204 });
}

const sampleReplace: ReplaceBlockRequest = {
  name: 'Morning',
  minutes: 60,
  stopScheduling: 'AfterDurationEnd',
  items: [
    {
      collectionType: 'SearchQuery',
      collectionId: null,
      multiCollectionId: null,
      smartCollectionId: null,
      mediaItemId: null,
      searchTitle: 'News',
      searchQuery: 'news',
      playbackOrder: 'Shuffle',
      includeInProgramGuide: true,
      disableWatermarks: false,
      watermarkIds: [],
      graphicsElementIds: []
    }
  ]
};

describe('blocks api client', () => {
  beforeEach(() => {
    window.localStorage.clear();
    vi.restoreAllMocks();
  });

  it('getBlockGroups fetches all block groups', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse([{ id: 1, name: 'Prime' }]));
    await expect(getBlockGroups()).resolves.toHaveLength(1);
    expect(fetchMock).toHaveBeenCalledWith('/api/blocks/groups', expect.objectContaining({ method: 'GET' }));
  });

  it('createBlockGroup POSTs the name', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse({ id: 3, name: 'Prime' }, 201));
    await createBlockGroup({ name: 'Prime' });
    const [url, init] = fetchMock.mock.calls[0];
    expect(url).toBe('/api/blocks/groups');
    expect(init).toMatchObject({ method: 'POST' });
    expect(JSON.parse(String(init?.body)).name).toBe('Prime');
  });

  it('deleteBlockGroup DELETEs by id', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(noContent());
    await expect(deleteBlockGroup(3)).resolves.toBeUndefined();
    expect(fetchMock).toHaveBeenCalledWith('/api/blocks/groups/3', expect.objectContaining({ method: 'DELETE' }));
  });

  it('getBlocks fetches all blocks', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse([]));
    await getBlocks();
    expect(fetchMock).toHaveBeenCalledWith('/api/blocks', expect.objectContaining({ method: 'GET' }));
  });

  it('getBlock fetches a block by id', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse({ id: 4 }));
    await getBlock(4);
    expect(fetchMock).toHaveBeenCalledWith('/api/blocks/4', expect.objectContaining({ method: 'GET' }));
  });

  it('createBlock POSTs group id and name', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse({ id: 8 }, 201));
    await createBlock({ blockGroupId: 2, name: 'Morning' });
    const [url, init] = fetchMock.mock.calls[0];
    expect(url).toBe('/api/blocks');
    expect(init).toMatchObject({ method: 'POST' });
    expect(JSON.parse(String(init?.body))).toMatchObject({ blockGroupId: 2, name: 'Morning' });
  });

  it('deleteBlock DELETEs by id', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(noContent());
    await deleteBlock(4);
    expect(fetchMock).toHaveBeenCalledWith('/api/blocks/4', expect.objectContaining({ method: 'DELETE' }));
  });

  it('getBlockItems fetches items for a block', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse([]));
    await getBlockItems(4);
    expect(fetchMock).toHaveBeenCalledWith('/api/blocks/4/items', expect.objectContaining({ method: 'GET' }));
  });

  it('replaceBlock PUTs the full block body', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse({ id: 4, items: [] }));
    await replaceBlock(4, sampleReplace);
    const [url, init] = fetchMock.mock.calls[0];
    expect(url).toBe('/api/blocks/4');
    expect(init).toMatchObject({ method: 'PUT' });
    const body = JSON.parse(String(init?.body));
    expect(body.minutes).toBe(60);
    expect(body.items).toHaveLength(1);
  });

  it('getBlockItemsWithMeta returns the items and the ETag', async () => {
    vi.spyOn(window, 'fetch').mockResolvedValue(
      new Response(JSON.stringify([{ id: 1 }]), {
        headers: { ETag: '"5"', 'Content-Type': 'application/json' },
        status: 200
      })
    );

    const result = await getBlockItemsWithMeta(4);

    expect(result.etag).toBe('"5"');
    expect(result.data).toHaveLength(1);
  });

  it('replaceBlock sends If-Match when an ETag is supplied and returns the new ETag', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(
      new Response(JSON.stringify({ id: 4, items: [] }), {
        headers: { ETag: '"6"', 'Content-Type': 'application/json' },
        status: 200
      })
    );

    const result = await replaceBlock(4, sampleReplace, '"5"');

    const [, init] = fetchMock.mock.calls[0];
    expect(init?.headers).toMatchObject({ 'If-Match': '"5"' });
    expect(result.etag).toBe('"6"');
  });

  it('replaceBlock omits If-Match when no ETag is supplied', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse({ id: 4, items: [] }));

    await replaceBlock(4, sampleReplace);

    const [, init] = fetchMock.mock.calls[0];
    expect(init?.headers).not.toHaveProperty('If-Match');
  });

  it('previewBlock POSTs to the preview route', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse([]));
    await previewBlock(4, sampleReplace);
    const [url, init] = fetchMock.mock.calls[0];
    expect(url).toBe('/api/blocks/4/preview');
    expect(init).toMatchObject({ method: 'POST' });
  });

  it('copyBlock POSTs the target group and name to the copy route', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockResolvedValue(jsonResponse({ id: 9 }, 201));
    await copyBlock(4, { blockGroupId: 3, name: 'Morning Copy' });
    const [url, init] = fetchMock.mock.calls[0];
    expect(url).toBe('/api/blocks/4/copy');
    expect(init).toMatchObject({ method: 'POST' });
    expect(JSON.parse(String(init?.body))).toMatchObject({ blockGroupId: 3, name: 'Morning Copy' });
  });

  it('search pickers encode the query and hit the right routes', async () => {
    const fetchMock = vi.spyOn(window, 'fetch').mockImplementation(() => Promise.resolve(jsonResponse([])));
    await searchCollections('a b');
    await searchTelevisionShows('show');
    await searchTelevisionSeasons('season');
    await searchSmartCollections('smart');
    expect(fetchMock.mock.calls.map((c) => c[0])).toEqual([
      '/api/search/collections?query=a%20b',
      '/api/search/television-shows?query=show',
      '/api/search/television-seasons?query=season',
      '/api/search/smart-collections?query=smart'
    ]);
  });
});