/* @vitest-environment jsdom */

import { act, renderHook, waitFor } from '@testing-library/react';
import { createRef, type PointerEvent as ReactPointerEvent } from 'react';
import { describe, expect, it, vi } from 'vitest';

import type { EditorAsset } from './ImageCanvasEditorTypes';
import {
  countHiddenSelectedAssets,
  createAssetMarqueeFromPointer,
  createAssetMarqueeSelectionRect,
  getSelectableAssets,
  moveAssetMarqueeToPointer,
  selectUploadedAssetsInRect,
  useImageCanvasAssetSelection,
} from './useImageCanvasAssetSelection';

function createAsset(overrides: Partial<EditorAsset> = {}): EditorAsset {
  return {
    id: 'asset-a',
    label: '素材A',
    src: 'data:image/png;base64,YQ==',
    width: 320,
    height: 240,
    folderId: 'project',
    sourceKind: 'uploaded',
    sourceType: 'uploaded',
    persisted: true,
    ...overrides,
  };
}

describe('useImageCanvasAssetSelection', () => {
  it('counts selected assets outside the current visible scope', () => {
    expect(
      countHiddenSelectedAssets(new Set(['asset-a', 'asset-b', 'asset-c']), [
        'asset-a',
      ]),
    ).toBe(2);
  });

  it('owns selectable-asset validity', () => {
    expect(
      getSelectableAssets([
        createAsset({ id: 'ready' }),
        createAsset({ id: 'uploading', uploadStatus: 'uploading' }),
        createAsset({ id: 'failed', uploadStatus: 'failed' }),
        createAsset({ id: 'empty', src: '  ' }),
        createAsset({
          id: 'object-key-only',
          src: '',
          objectKey: 'generated/editor/object-key-only.png',
        }),
        createAsset({ id: 'built-in', sourceKind: 'built-in' }),
      ]).map((asset) => asset.id),
    ).toEqual(['ready', 'object-key-only']);
  });

  it('owns marquee geometry and selectable hit testing', () => {
    const marquee = createAssetMarqueeFromPointer({
      pointerId: 5,
      point: { clientX: 180, clientY: 220 },
      containerRect: { left: 100, top: 200 },
    });
    expect(
      moveAssetMarqueeToPointer({
        marquee,
        point: { clientX: 120, clientY: 205 },
        containerRect: { left: 100, top: 200 },
      }),
    ).toMatchObject({ currentX: 20, currentY: 5 });
    const selectionRect = createAssetMarqueeSelectionRect({
      marquee,
      point: { clientX: 120, clientY: 205 },
      containerRect: { left: 100, top: 200 },
    });
    expect(selectionRect).toEqual({
      left: 120,
      right: 180,
      top: 205,
      bottom: 220,
    });
    expect([
      ...selectUploadedAssetsInRect({
        assets: [
          createAsset({ id: 'asset-a' }),
          createAsset({ id: 'asset-b' }),
          createAsset({
            id: 'object-key-only',
            src: '',
            objectKey: 'generated/editor/object-key-only.png',
          }),
          createAsset({ id: 'built-in', sourceKind: 'built-in' }),
        ],
        assetTargets: [
          {
            assetId: 'asset-a',
            rect: { left: 10, right: 20, top: 10, bottom: 20 },
          },
          {
            assetId: 'asset-b',
            rect: { left: 30, right: 40, top: 30, bottom: 40 },
          },
          {
            assetId: 'built-in',
            rect: { left: 15, right: 25, top: 15, bottom: 25 },
          },
          {
            assetId: 'object-key-only',
            rect: { left: 25, right: 30, top: 25, bottom: 30 },
          },
        ],
        selectionRect: { left: 20, right: 35, top: 20, bottom: 35 },
      }),
    ]).toEqual(['asset-a', 'asset-b', 'object-key-only']);
  });

  it('keeps marquee geometry aligned with a scrolling asset list', () => {
    const container = { scrollLeft: 40, scrollTop: 60 };
    const marquee = createAssetMarqueeFromPointer({
      pointerId: 9,
      point: { clientX: 180, clientY: 220 },
      containerRect: { left: 100, top: 200 },
      container,
    });
    expect(marquee).toMatchObject({
      startX: 120,
      startY: 80,
      currentX: 120,
      currentY: 80,
    });

    container.scrollLeft = 50;
    container.scrollTop = 70;
    expect(
      moveAssetMarqueeToPointer({
        marquee,
        point: { clientX: 120, clientY: 205 },
        containerRect: { left: 100, top: 200 },
        container,
      }),
    ).toMatchObject({ currentX: 70, currentY: 75 });
    expect(
      createAssetMarqueeSelectionRect({
        marquee,
        point: { clientX: 120, clientY: 205 },
        containerRect: { left: 100, top: 200 },
        container,
      }),
    ).toEqual({ left: 120, right: 170, top: 205, bottom: 210 });
  });

  it('supports click, shift and select-all for object-key-only assets', () => {
    const assets = [
      createAsset({
        id: 'object-key-a',
        src: '',
        objectKey: 'generated/editor/object-key-a.png',
      }),
      createAsset({
        id: 'object-key-b',
        src: '',
        objectKey: 'generated/editor/object-key-b.png',
      }),
    ];
    const visibleAssetIds = getSelectableAssets(assets).map(
      (asset) => asset.id,
    );
    const { result } = renderHook(() =>
      useImageCanvasAssetSelection({
        assetListRef: createRef<HTMLDivElement>(),
        assets,
      }),
    );

    act(() => result.current.openAssetSelectionMode());
    act(() =>
      result.current.toggleAssetSelected('object-key-a', { visibleAssetIds }),
    );
    act(() =>
      result.current.toggleAssetSelected('object-key-b', {
        visibleAssetIds,
        shiftKey: true,
      }),
    );
    expect([...result.current.selectedAssetIds]).toEqual([
      'object-key-a',
      'object-key-b',
    ]);

    act(() => result.current.toggleAllAssetsSelected(visibleAssetIds));
    expect(result.current.selectedAssetIds.size).toBe(0);
    act(() => result.current.toggleAllAssetsSelected(visibleAssetIds));
    expect([...result.current.selectedAssetIds]).toEqual(visibleAssetIds);
  });

  it('applies tick, shift and visible select-all as deltas', () => {
    const assets = [
      createAsset({ id: 'asset-a' }),
      createAsset({ id: 'asset-b' }),
      createAsset({ id: 'asset-c' }),
    ];
    const { result } = renderHook(() =>
      useImageCanvasAssetSelection({
        assetListRef: createRef<HTMLDivElement>(),
        assets,
      }),
    );

    act(() => result.current.openAssetSelectionMode());
    act(() =>
      result.current.toggleAssetSelected('asset-c', {
        visibleAssetIds: ['asset-a', 'asset-b', 'asset-c'],
      }),
    );
    act(() =>
      result.current.toggleAssetSelected('asset-b', {
        visibleAssetIds: ['asset-a', 'asset-b'],
        shiftKey: true,
      }),
    );
    expect([...result.current.selectedAssetIds]).toEqual([
      'asset-c',
      'asset-b',
    ]);

    act(() =>
      result.current.toggleAssetSelected('asset-a', {
        visibleAssetIds: ['asset-a', 'asset-b'],
        shiftKey: true,
      }),
    );
    expect([...result.current.selectedAssetIds]).toEqual([
      'asset-c',
      'asset-b',
      'asset-a',
    ]);

    act(() => result.current.toggleAllAssetsSelected(['asset-a']));
    expect([...result.current.selectedAssetIds]).toEqual([
      'asset-c',
      'asset-b',
    ]);
    act(() => result.current.toggleAllAssetsSelected(['asset-a']));
    expect([...result.current.selectedAssetIds]).toEqual([
      'asset-c',
      'asset-b',
      'asset-a',
    ]);

    act(() =>
      result.current.toggleAssetSelected('asset-stale', {
        visibleAssetIds: ['asset-a'],
      }),
    );
    expect([...result.current.selectedAssetIds]).toEqual([
      'asset-c',
      'asset-b',
      'asset-a',
    ]);
  });

  it('reconciles against selectable assets instead of UI visibility', async () => {
    const initialAssets = [
      createAsset({ id: 'asset-a' }),
      createAsset({ id: 'asset-b' }),
      createAsset({ id: 'asset-c' }),
    ];
    const assetListRef = createRef<HTMLDivElement>();
    const { result, rerender } = renderHook(
      ({ assets }: { assets: EditorAsset[] }) =>
        useImageCanvasAssetSelection({ assetListRef, assets }),
      { initialProps: { assets: initialAssets } },
    );

    act(() => result.current.openAssetSelectionMode());
    act(() =>
      result.current.toggleAllAssetsSelected(['asset-a', 'asset-b', 'asset-c']),
    );
    act(() =>
      result.current.toggleAssetSelected('asset-b', {
        visibleAssetIds: ['asset-b'],
      }),
    );
    expect([...result.current.selectedAssetIds]).toEqual([
      'asset-a',
      'asset-c',
    ]);

    rerender({
      assets: [createAsset({ id: 'asset-b' }), createAsset({ id: 'asset-c' })],
    });
    await waitFor(() => {
      expect([...result.current.selectedAssetIds]).toEqual(['asset-c']);
      expect(result.current.selectedAssets.map((asset) => asset.id)).toEqual([
        'asset-c',
      ]);
    });
  });

  it('owns selection-mode open and close lifecycle', () => {
    const onOpenSelectionMode = vi.fn();
    const { result } = renderHook(() =>
      useImageCanvasAssetSelection({
        assetListRef: createRef<HTMLDivElement>(),
        assets: [createAsset()],
        onOpenSelectionMode,
      }),
    );

    act(() => result.current.openAssetSelectionMode());
    expect(result.current.isAssetSelectionMode).toBe(true);
    expect(onOpenSelectionMode).toHaveBeenCalledTimes(1);
    act(() =>
      result.current.toggleAssetSelected('asset-a', {
        visibleAssetIds: ['asset-a'],
      }),
    );
    expect([...result.current.selectedAssetIds]).toEqual(['asset-a']);

    act(() => result.current.closeAssetSelectionMode());
    expect(result.current.isAssetSelectionMode).toBe(false);
    expect(result.current.selectedAssetIds.size).toBe(0);
  });

  it('leaves touch background gestures available for list scrolling', () => {
    const assetList = document.createElement('div');
    const setPointerCapture = vi.fn();
    Object.assign(assetList, { setPointerCapture });
    const { result } = renderHook(() =>
      useImageCanvasAssetSelection({
        assetListRef: { current: assetList },
        assets: [createAsset()],
      }),
    );
    const preventDefault = vi.fn();

    act(() => result.current.openAssetSelectionMode());
    act(() =>
      result.current.handleAssetMarqueePointerDown({
        target: assetList,
        pointerType: 'touch',
        button: 0,
        pointerId: 3,
        clientX: 10,
        clientY: 20,
        ctrlKey: false,
        metaKey: false,
        preventDefault,
      } as unknown as ReactPointerEvent<HTMLDivElement>),
    );

    expect(result.current.assetMarquee).toBeNull();
    expect(preventDefault).not.toHaveBeenCalled();
    expect(setPointerCapture).not.toHaveBeenCalled();
  });

  it('commits the pointer-up endpoint but not a cancelled marquee', () => {
    const assetList = document.createElement('div');
    const assetTarget = document.createElement('div');
    assetTarget.dataset.assetId = 'asset-a';
    assetTarget.getBoundingClientRect = () =>
      ({ left: 40, right: 50, top: 40, bottom: 50 }) as DOMRect;
    assetList.appendChild(assetTarget);
    assetList.getBoundingClientRect = () =>
      ({ left: 0, right: 100, top: 0, bottom: 100 }) as DOMRect;
    Object.assign(assetList, {
      setPointerCapture: vi.fn(),
      hasPointerCapture: vi.fn(() => true),
      releasePointerCapture: vi.fn(),
    });
    const { result } = renderHook(() =>
      useImageCanvasAssetSelection({
        assetListRef: { current: assetList },
        assets: [createAsset()],
      }),
    );
    const pointerDown = (pointerId: number) =>
      result.current.handleAssetMarqueePointerDown({
        target: assetList,
        pointerType: 'mouse',
        button: 0,
        pointerId,
        clientX: 10,
        clientY: 10,
        ctrlKey: false,
        metaKey: false,
        preventDefault: vi.fn(),
      } as unknown as ReactPointerEvent<HTMLDivElement>);

    act(() => result.current.openAssetSelectionMode());
    act(() => pointerDown(4));
    act(() =>
      result.current.handleAssetMarqueePointerUp({
        pointerId: 4,
        clientX: 50,
        clientY: 50,
        preventDefault: vi.fn(),
      } as unknown as ReactPointerEvent<HTMLDivElement>),
    );
    expect([...result.current.selectedAssetIds]).toEqual(['asset-a']);
    expect(result.current.assetMarquee).toBeNull();

    act(() => pointerDown(5));
    act(() =>
      result.current.handleAssetMarqueePointerMove({
        pointerId: 5,
        clientX: 50,
        clientY: 50,
        preventDefault: vi.fn(),
      } as unknown as ReactPointerEvent<HTMLDivElement>),
    );
    expect([...result.current.selectedAssetIds]).toEqual(['asset-a']);
    act(() =>
      result.current.handleAssetMarqueePointerCancel({
        pointerId: 5,
        clientX: 50,
        clientY: 50,
      } as unknown as ReactPointerEvent<HTMLDivElement>),
    );
    expect(result.current.selectedAssetIds.size).toBe(0);
    expect(result.current.assetMarquee).toBeNull();
  });

  it('clears only the matching marquee when pointer capture is lost', () => {
    const assetList = document.createElement('div');
    const releasePointerCapture = vi.fn();
    Object.assign(assetList, {
      setPointerCapture: vi.fn(),
      releasePointerCapture,
    });
    const assetListRef = { current: assetList };
    const { result } = renderHook(() =>
      useImageCanvasAssetSelection({
        assetListRef,
        assets: [createAsset()],
      }),
    );
    const target = document.createElement('div');

    act(() => result.current.openAssetSelectionMode());
    act(() =>
      result.current.handleAssetMarqueePointerDown({
        target,
        button: 0,
        pointerId: 7,
        clientX: 10,
        clientY: 20,
        ctrlKey: false,
        metaKey: false,
        preventDefault: vi.fn(),
      } as unknown as ReactPointerEvent<HTMLDivElement>),
    );
    expect(result.current.assetMarquee?.pointerId).toBe(7);

    act(() =>
      result.current.handleAssetMarqueeLostPointerCapture({
        pointerId: 8,
      } as ReactPointerEvent<HTMLDivElement>),
    );
    expect(result.current.assetMarquee?.pointerId).toBe(7);
    act(() =>
      result.current.handleAssetMarqueeLostPointerCapture({
        pointerId: 7,
      } as ReactPointerEvent<HTMLDivElement>),
    );
    expect(result.current.assetMarquee).toBeNull();
    expect(releasePointerCapture).not.toHaveBeenCalled();
  });
});