/**
 * Tests for the LibraryFileDetailsModal component (#3077).
 */

import { describe, it, expect, vi, beforeEach } from 'vitest';
import { screen, waitFor } from '@testing-library/react';
import userEvent from '@testing-library/user-event';
import { render } from '../utils';
import { LibraryFileDetailsModal } from '../../components/LibraryFileDetailsModal';
import type { LibraryFileListItem } from '../../api/client';
import { http, HttpResponse } from 'msw';
import { server } from '../mocks/server';

const listItem: LibraryFileListItem = {
  id: 7,
  folder_id: null,
  is_external: false,
  filename: 'benchy.gcode.3mf',
  file_type: 'gcode.3mf',
  file_size: 1048576,
  thumbnail_path: null,
  print_count: 2,
  duplicate_count: 0,
  created_by_id: null,
  created_by_username: null,
  created_at: '2024-01-01T00:00:00Z',
  fs_modified_at: null,
  print_name: 'Benchy',
  print_time_seconds: 3600,
  filament_used_grams: 12.5,
  sliced_for_model: 'X1C',
  tags: [],
};

const details = {
  ...listItem,
  folder_name: null,
  project_id: null,
  project_name: null,
  file_path: 'library/files/benchy.gcode.3mf',
  file_hash: null,
  metadata: null,
  last_printed_at: null,
  notes: 'Print with brim',
  external_url: 'https://www.printables.com/model/1',
  photos: ['abc123.jpg'],
  source_url: 'https://makerworld.com/models/42',
  duplicates: null,
  updated_at: '2024-02-01T00:00:00Z',
};

describe('LibraryFileDetailsModal', () => {
  const onClose = vi.fn();
  let lastUpdate: Record<string, unknown> | null = null;

  beforeEach(() => {
    vi.clearAllMocks();
    lastUpdate = null;
    server.use(
      http.get('/api/v1/library/files/7', () => HttpResponse.json(details)),
      http.put('/api/v1/library/files/7', async ({ request }) => {
        lastUpdate = (await request.json()) as Record<string, unknown>;
        return HttpResponse.json({ ...details, ...lastUpdate });
      }),
      http.delete('/api/v1/library/files/7/photos/:filename', () =>
        HttpResponse.json({ status: 'deleted', photos: [] })
      )
    );
  });

  it('renders the facts, notes, link and photos from the detail response', async () => {
    render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

    expect(screen.getByText('benchy.gcode.3mf')).toBeInTheDocument();
    // Header badge and the Type fact.
    expect(screen.getAllByText('GCODE.3MF')).toHaveLength(2);
    expect(screen.getByText('1.0 MB')).toBeInTheDocument();

    await waitFor(() => {
      expect(screen.getByDisplayValue('Print with brim')).toBeInTheDocument();
    });
    expect(screen.getByDisplayValue('https://www.printables.com/model/1')).toBeInTheDocument();
    expect(screen.getByText('Benchy')).toBeInTheDocument();
    expect(screen.getByText('X1C')).toBeInTheDocument();
    expect(screen.getByText('12.5 g')).toBeInTheDocument();

    // Source provenance is a link, not an editable field.
    const source = screen.getByRole('link', { name: /makerworld\.com\/models\/42/ });
    expect(source).toHaveAttribute('href', 'https://makerworld.com/models/42');
    expect(source).toHaveAttribute('target', '_blank');

    const photo = screen.getByAltText('Photos') as HTMLImageElement;
    expect(photo.src).toContain('/library/files/7/photos/abc123.jpg');
  });

  it('saves edited notes and link through updateLibraryFile', async () => {
    const user = userEvent.setup();
    render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

    const notes = await screen.findByDisplayValue('Print with brim');
    const saveButton = screen.getByRole('button', { name: /save/i });
    // Nothing changed yet, so there is nothing to save.
    expect(saveButton).toBeDisabled();

    await user.clear(notes);
    await user.type(notes, 'Use 0.2 mm layers');
    const link = screen.getByDisplayValue('https://www.printables.com/model/1');
    await user.clear(link);
    await user.type(link, 'https://example.com/part ');

    expect(saveButton).toBeEnabled();
    await user.click(saveButton);

    await waitFor(() => {
      expect(lastUpdate).toEqual({ notes: 'Use 0.2 mm layers', external_url: 'https://example.com/part' });
    });
    await waitFor(() => expect(onClose).toHaveBeenCalled());
  });

  it('sends an empty external_url when the link is cleared', async () => {
    const user = userEvent.setup();
    render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

    const link = await screen.findByDisplayValue('https://www.printables.com/model/1');
    await user.clear(link);
    await user.click(screen.getByRole('button', { name: /save/i }));

    await waitFor(() => {
      expect(lastUpdate).toEqual({ notes: 'Print with brim', external_url: '' });
    });
  });

  it('is read-only without edit permission', async () => {
    render(<LibraryFileDetailsModal file={listItem} canEdit={false} onClose={onClose} />);

    const notes = await screen.findByDisplayValue('Print with brim');
    expect(notes).toBeDisabled();
    expect(screen.getByDisplayValue('https://www.printables.com/model/1')).toBeDisabled();
    expect(screen.queryByRole('button', { name: /save/i })).not.toBeInTheDocument();
    expect(screen.queryByLabelText('Add photo')).not.toBeInTheDocument();
    expect(screen.queryByLabelText('Delete photo')).not.toBeInTheDocument();
  });

  it('removes a photo from the grid after deleting it', async () => {
    const user = userEvent.setup();
    render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

    await screen.findByAltText('Photos');
    await user.click(screen.getByLabelText('Delete photo'));

    await waitFor(() => {
      expect(screen.queryByAltText('Photos')).not.toBeInTheDocument();
    });
  });

  it('keeps unsaved notes when a photo change refetches the file', async () => {
    // Deleting a photo invalidates the detail query; the refetched file has a
    // different photo list, so it is a new object and must not reseed the form.
    let serverPhotos = ['abc123.jpg'];
    let detailFetches = 0;
    server.use(
      http.get('/api/v1/library/files/7', () => {
        detailFetches += 1;
        return HttpResponse.json({ ...details, photos: serverPhotos });
      }),
      http.delete('/api/v1/library/files/7/photos/:filename', () => {
        serverPhotos = [];
        return HttpResponse.json({ status: 'deleted', photos: [] });
      })
    );
    const user = userEvent.setup();
    render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

    const notes = await screen.findByDisplayValue('Print with brim');
    await user.clear(notes);
    await user.type(notes, 'Draft not saved yet');

    await user.click(screen.getByLabelText('Delete photo'));
    await waitFor(() => {
      expect(screen.queryByAltText('Photos')).not.toBeInTheDocument();
    });
    await waitFor(() => expect(detailFetches).toBeGreaterThan(1));

    expect(screen.getByDisplayValue('Draft not saved yet')).toBeInTheDocument();
    expect(screen.getByRole('button', { name: /save/i })).toBeEnabled();
  });

  describe('lightbox', () => {
    beforeEach(() => {
      server.use(
        http.get('/api/v1/library/files/7', () =>
          HttpResponse.json({ ...details, photos: ['one.jpg', 'two.jpg', 'three.jpg'] })
        )
      );
    });

    it('opens on the photo that was clicked, not the first one', async () => {
      const user = userEvent.setup();
      render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

      const thumbnails = await screen.findAllByAltText('Photos');
      expect(thumbnails).toHaveLength(3);
      await user.click(thumbnails[2]);

      expect(await screen.findByText('Photo 3 of 3')).toBeInTheDocument();
      const shown = screen.getByAltText('Photo 3') as HTMLImageElement;
      expect(shown.src).toContain('/library/files/7/photos/three.jpg');
    });

    it('keeps the details modal open when the delete confirmation is dismissed', async () => {
      // The confirmation renders inside the details overlay, whose root closes
      // on a backdrop click — dismissing the confirmation used to discard the
      // unsaved notes and link along with it.
      const user = userEvent.setup();
      const { container } = render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

      const notes = await screen.findByDisplayValue('Print with brim');
      await user.clear(notes);
      await user.type(notes, 'Draft not saved yet');

      await user.click(screen.getAllByAltText('Photos')[0]);
      await screen.findByText('Photo 1 of 3');
      await user.click(container.querySelector('.text-red-400') as HTMLElement);

      const confirmation = await screen.findByText('Delete Photo');
      await user.click(confirmation.closest('div.fixed') as HTMLElement);

      await waitFor(() => expect(screen.queryByText('Delete Photo')).not.toBeInTheDocument());
      expect(screen.getByText('Photo 1 of 3')).toBeInTheDocument();
      expect(screen.getByDisplayValue('Draft not saved yet')).toBeInTheDocument();
      expect(onClose).not.toHaveBeenCalled();
    });

    it('closes the details modal on Escape, and only the lightbox while that is open', async () => {
      const user = userEvent.setup();
      render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

      await screen.findByDisplayValue('Print with brim');
      await user.click(screen.getAllByAltText('Photos')[1]);
      await screen.findByText('Photo 2 of 3');

      await user.keyboard('{Escape}');
      await waitFor(() => expect(screen.queryByText('Photo 2 of 3')).not.toBeInTheDocument());
      expect(onClose).not.toHaveBeenCalled();

      await user.keyboard('{Escape}');
      await waitFor(() => expect(onClose).toHaveBeenCalled());
    });

    it('keeps the lightbox open when the delete confirmation is dismissed with Escape', async () => {
      // The confirmation has its own Escape handler. With the gallery's still
      // listening, one press cancelled the prompt and closed the gallery under
      // it, losing the user's place in the photo list.
      const user = userEvent.setup();
      const { container } = render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

      await screen.findByDisplayValue('Print with brim');
      await user.click(screen.getAllByAltText('Photos')[1]);
      await screen.findByText('Photo 2 of 3');
      await user.click(container.querySelector('.text-red-400') as HTMLElement);
      await screen.findByText('Delete Photo');

      await user.keyboard('{Escape}');

      await waitFor(() => expect(screen.queryByText('Delete Photo')).not.toBeInTheDocument());
      expect(screen.getByText('Photo 2 of 3')).toBeInTheDocument();
      expect(onClose).not.toHaveBeenCalled();
    });

    describe('after the last photo is deleted from inside the lightbox', () => {
      beforeEach(() => {
        server.use(
          http.get('/api/v1/library/files/7', () => HttpResponse.json({ ...details, photos: ['only.jpg'] }))
        );
      });

      const deleteTheOnlyPhotoFromTheLightbox = async (
        user: ReturnType<typeof userEvent.setup>,
        container: HTMLElement
      ) => {
        await screen.findByDisplayValue('Print with brim');
        await user.click(screen.getByAltText('Photos'));
        await screen.findByText('Photo 1 of 1');
        await user.click(container.querySelector('.text-red-400') as HTMLElement);
        await user.click(await screen.findByRole('button', { name: /^delete$/i }));
        await waitFor(() => expect(screen.queryByText('Photo 1 of 1')).not.toBeInTheDocument());
      };

      it('leaves Escape closing the details modal', async () => {
        // Emptying the list unmounts the gallery before its own "nothing left
        // to show" branch can call onClose, so the details modal never learned
        // the lightbox had gone and kept its Escape handler stood down.
        const user = userEvent.setup();
        const { container } = render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

        await deleteTheOnlyPhotoFromTheLightbox(user, container);

        await user.keyboard('{Escape}');
        await waitFor(() => expect(onClose).toHaveBeenCalled());
      });

      it('does not re-open the lightbox when the next photo is uploaded', async () => {
        server.use(
          http.post('/api/v1/library/files/7/photos', () =>
            HttpResponse.json({ status: 'uploaded', photos: ['replacement.jpg'] })
          )
        );
        const user = userEvent.setup();
        const { container } = render(<LibraryFileDetailsModal file={listItem} canEdit onClose={onClose} />);

        await deleteTheOnlyPhotoFromTheLightbox(user, container);

        await user.upload(
          screen.getByLabelText('Add photo'),
          new File(['jpeg'], 'replacement.jpg', { type: 'image/jpeg' })
        );

        const photo = (await screen.findByAltText('Photos')) as HTMLImageElement;
        expect(photo.src).toContain('/library/files/7/photos/replacement.jpg');
        expect(screen.queryByText('Photo 1 of 1')).not.toBeInTheDocument();
      });
    });
  });
});