/* @vitest-environment jsdom */

import {
  act,
  cleanup,
  fireEvent,
  render,
  screen,
  waitFor,
} from '@testing-library/react';
import { createRef, useState } from 'react';
import { afterEach, describe, expect, it, vi } from 'vitest';

import type {
  GenerateDialogState,
  SpecFormValues,
  UploadTarget,
} from './ImageCanvasEditorTypes';
import { ImageCanvasSpecGenerationPanelView } from './ImageCanvasSpecGenerationPanelView';

const iconSpecClientMocks = vi.hoisted(() => ({
  refineGamePlay: vi.fn(),
  refineArtStyle: vi.fn(),
}));

vi.mock('../../services/image-editor/editorProjectClient', () => ({
  EDITOR_ICON_SPEC_PROMPT_MAX_LENGTH: 200,
  refineEditorIconSpecPlaySetting: iconSpecClientMocks.refineGamePlay,
  refineEditorIconSpecArtStyle: iconSpecClientMocks.refineArtStyle,
}));

afterEach(() => {
  cleanup();
  vi.clearAllMocks();
});

function createSpecDialog(
  patch: Partial<GenerateDialogState> = {},
): GenerateDialogState {
  return {
    mode: 'spec',
    prompt: '',
    status: 'idle',
    specType: 'character',
    specValues: {
      playSetting: 'RPG玩法',
      artStyle: '像素风',
      bodyRatio: '3',
      characterView: '右向斜侧身站姿',
      customPrompt: '',
    },
    ...patch,
  };
}

function renderPanel({
  dialog,
  onUpdateSpecFormValue = vi.fn(),
  onRequestUpload = vi.fn(),
  onSubmit = vi.fn(),
}: {
  dialog: GenerateDialogState;
  onUpdateSpecFormValue?: (key: keyof SpecFormValues, value: string) => void;
  onRequestUpload?: (target: UploadTarget) => void;
  onSubmit?: (dialog: GenerateDialogState) => void;
}) {
  render(
    <ImageCanvasSpecGenerationPanelView
      dialog={dialog}
      style={{ left: 10, top: 20 }}
      onUpdateSpecFormValue={onUpdateSpecFormValue}
      onRequestUpload={onRequestUpload}
      onSubmit={onSubmit}
    />,
  );
}

function UiDesignHarness({
  initialDialog,
  onRequestUpload = vi.fn(),
}: {
  initialDialog: GenerateDialogState;
  onRequestUpload?: (target: UploadTarget) => void;
}) {
  const [dialog, setDialog] = useState<GenerateDialogState | null>(
    initialDialog,
  );
  const referenceButtonRef = createRef<HTMLButtonElement>();

  return dialog ? (
    <ImageCanvasSpecGenerationPanelView
      dialog={dialog}
      style={{ left: 10, top: 20 }}
      generationReferenceButtonRef={referenceButtonRef}
      setGenerateDialog={setDialog}
      renderEditorPortal={(node) => node}
      buildPortalMenuStyle={() => ({ position: 'fixed', left: 0, top: 0 })}
      onUpdateSpecFormValue={vi.fn()}
      onRequestUpload={onRequestUpload}
      onSubmit={vi.fn()}
    />
  ) : null;
}

function IconSpecHarness({
  playSetting = '回合制占点',
  artStyle = '低多边形',
  onSubmit = vi.fn(),
}: {
  playSetting?: string;
  artStyle?: string;
  onSubmit?: (dialog: GenerateDialogState) => void;
}) {
  const [dialog, setDialog] = useState<GenerateDialogState>(
    createSpecDialog({
      specType: 'icon',
      specValues: {
        playSetting,
        artStyle,
        bodyRatio: '3',
        characterView: '右向斜侧身站姿',
        customPrompt: '',
      },
    }),
  );

  return (
    <ImageCanvasSpecGenerationPanelView
      dialog={dialog}
      style={{ left: 10, top: 20 }}
      onUpdateSpecFormValue={(key, value) =>
        setDialog((current) => ({
          ...current,
          specValues: {
            ...current.specValues!,
            [key]: value,
          },
        }))
      }
      onRequestUpload={vi.fn()}
      onSubmit={onSubmit}
    />
  );
}

function createDeferred<T>() {
  let resolve!: (value: T) => void;
  let reject!: (reason?: unknown) => void;
  const promise = new Promise<T>((resolvePromise, rejectPromise) => {
    resolve = resolvePromise;
    reject = rejectPromise;
  });
  return { promise, resolve, reject };
}

describe('ImageCanvasSpecGenerationPanelView', () => {
  it('keeps the reference row above fields for spec panels and shows mud point text', () => {
    renderPanel({ dialog: createSpecDialog() });

    const panel = screen.getByRole('dialog', { name: '生成规范' });
    expect(
      panel.firstElementChild?.className.includes(
        'image-canvas-editor__reference-strip',
      ),
    ).toBe(true);
    const submitButton = screen.getByRole('button', { name: '提交生成规范' });
    expect(submitButton.textContent).toBe('生成5泥点');
    const dimensionsButton = screen.getByRole('button', {
      name: '生成图片尺寸 16:9·2K',
    }) as HTMLButtonElement;
    const modelButton = screen.getByRole('button', {
      name: '生成图片模型 gpt-image-2',
    }) as HTMLButtonElement;

    expect(dimensionsButton.disabled).toBe(true);
    expect(modelButton.disabled).toBe(true);
    expect(dimensionsButton.className).toContain(
      'image-canvas-editor__option-cluster--dimensions',
    );
    expect(modelButton.className).toContain(
      'image-canvas-editor__option-cluster--model',
    );
    fireEvent.click(dimensionsButton);
    fireEvent.click(modelButton);
    expect(screen.queryByRole('menu', { name: '生成图片尺寸选项' })).toBeNull();
    expect(screen.queryByRole('menu', { name: '生成图片模型选项' })).toBeNull();
  });

  it('renders UI design as a single borderless prompt below the first reference row', () => {
    render(
      <UiDesignHarness
        initialDialog={{
          mode: 'ui-design',
          prompt: '',
          status: 'idle',
          composerOpen: true,
          uiDesignSpecReference: null,
          imageModel: 'nanobanana2',
          aspectRatio: '16:9',
          imageSize: '1K',
        }}
      />,
    );

    const panel = screen.getByRole('dialog', { name: '生成UI设计图' });
    const prompt = screen.getByRole('textbox', { name: 'UI设计要求' });

    expect(
      panel.firstElementChild?.className.includes(
        'image-canvas-editor__reference-strip',
      ),
    ).toBe(true);
    expect(panel.textContent).not.toContain('UI设计要求');
    expect(prompt.getAttribute('placeholder')).toBe('你希望这个 UI 长什么样？');
    expect(prompt.className).toContain(
      'image-canvas-editor__generation-prompt',
    );
    expect(prompt.className).not.toContain(
      'image-canvas-editor__generation-prompt--borderless',
    );
    const submitButton = screen.getByRole('button', { name: '生成UI设计图' });
    const modelButton = screen.getByRole('button', {
      name: '生成图片模型 gpt-image-2',
    }) as HTMLButtonElement;

    expect(submitButton.textContent).toBe('生成3泥点');
    expect(modelButton.disabled).toBe(true);
    expect(modelButton.closest('div')?.className).toContain(
      'image-canvas-editor__readonly-generation-option',
    );
    fireEvent.click(modelButton);
    expect(screen.queryByRole('menu', { name: '生成图片模型选项' })).toBeNull();
    expect(screen.queryByText('nanobanana2')).toBeNull();
  });

  it('uploads and removes UI design generation references', () => {
    const requestUpload = vi.fn();
    render(
      <UiDesignHarness
        onRequestUpload={requestUpload}
        initialDialog={{
          mode: 'ui-design',
          prompt: '',
          status: 'idle',
          composerOpen: true,
          uiDesignSpecReference: null,
          generationReferences: [
            {
              id: 'ref-a',
              label: '界面风格参考',
              src: 'data:image/png;base64,ref',
            },
          ],
          imageModel: 'gpt-image-2',
          aspectRatio: '16:9',
          imageSize: '1K',
        }}
      />,
    );

    expect(screen.getByLabelText('界面风格参考')).toBeTruthy();
    fireEvent.click(screen.getByRole('button', { name: '上传UI设计参考图' }));
    expect(requestUpload).toHaveBeenCalledWith('generation-reference');

    fireEvent.click(screen.getByRole('button', { name: '删除界面风格参考' }));
    expect(screen.queryByLabelText('界面风格参考')).toBeNull();
  });

  it('renders character spec fields and forwards updates', () => {
    const updateSpecFormValue = vi.fn();
    renderPanel({
      dialog: createSpecDialog(),
      onUpdateSpecFormValue: updateSpecFormValue,
    });

    expect(
      (screen.getByLabelText('玩法设定') as HTMLInputElement).placeholder,
    ).toBe('这是什么类型的游戏？');
    expect(
      (screen.getByLabelText('美术风格') as HTMLInputElement).placeholder,
    ).toBe('游戏的画风是怎样的？');

    fireEvent.change(screen.getByLabelText('玩法设定'), {
      target: { value: '战棋玩法' },
    });
    fireEvent.change(screen.getByLabelText('美术风格'), {
      target: { value: '水彩' },
    });
    fireEvent.change(screen.getByLabelText('头身比'), {
      target: { value: '5' },
    });
    fireEvent.change(screen.getByLabelText('角色视角'), {
      target: { value: '左向三分之二侧身站姿' },
    });

    expect(updateSpecFormValue).toHaveBeenCalledWith('playSetting', '战棋玩法');
    expect(updateSpecFormValue).toHaveBeenCalledWith('artStyle', '水彩');
    expect(updateSpecFormValue).toHaveBeenCalledWith('bodyRatio', '5');
    expect(updateSpecFormValue).toHaveBeenCalledWith(
      'characterView',
      '左向三分之二侧身站姿',
    );
  });

  it('uses gameplay and art style hints for icon specs', () => {
    renderPanel({
      dialog: createSpecDialog({
        specType: 'icon',
        specValues: {
          playSetting: '',
          artStyle: '',
          bodyRatio: '3',
          characterView: '右向斜侧身站姿',
          customPrompt: '',
        },
      }),
    });

    expect((screen.getByLabelText('玩法设定') as HTMLInputElement).value).toBe(
      '',
    );
    expect(
      (screen.getByLabelText('玩法设定') as HTMLInputElement).placeholder,
    ).toBe('游戏的核心玩法是什么？');
    expect((screen.getByLabelText('美术风格') as HTMLInputElement).value).toBe(
      '',
    );
    expect(
      (screen.getByLabelText('美术风格') as HTMLInputElement).placeholder,
    ).toBe('游戏的画风是怎样的？');
    expect(
      (
        screen.getByRole('button', {
          name: '一键优化玩法设定',
        }) as HTMLButtonElement
      ).disabled,
    ).toBe(true);
    expect(
      (
        screen.getByRole('button', {
          name: '提交生成规范',
        }) as HTMLButtonElement
      ).disabled,
    ).toBe(true);
  });

  it('enforces the icon spec prompt limit in the fields and submit state', () => {
    const overLimit = '玩'.repeat(201);
    const onSubmit = vi.fn();
    render(<IconSpecHarness onSubmit={onSubmit} />);

    const playSetting = screen.getByLabelText(
      '玩法设定',
    ) as HTMLTextAreaElement;
    const artStyle = screen.getByLabelText('美术风格') as HTMLTextAreaElement;
    expect(playSetting.hasAttribute('maxlength')).toBe(false);
    expect(artStyle.hasAttribute('maxlength')).toBe(false);

    fireEvent.change(playSetting, { target: { value: overLimit } });
    expect(Array.from(playSetting.value)).toHaveLength(200);
    fireEvent.change(playSetting, { target: { value: '🎮'.repeat(201) } });
    expect(Array.from(playSetting.value)).toHaveLength(200);
    fireEvent.click(screen.getByRole('button', { name: '提交生成规范' }));
    expect(onSubmit).toHaveBeenCalledTimes(1);

    cleanup();
    renderPanel({
      dialog: createSpecDialog({
        specType: 'icon',
        specValues: {
          playSetting: overLimit,
          artStyle: '低多边形',
          bodyRatio: '3',
          characterView: '右向斜侧身站姿',
          customPrompt: '',
        },
      }),
      onSubmit,
    });
    expect(
      (
        screen.getByRole('button', {
          name: '提交生成规范',
        }) as HTMLButtonElement
      ).disabled,
    ).toBe(true);
    expect(
      (
        screen.getByRole('button', {
          name: '一键优化玩法设定',
        }) as HTMLButtonElement
      ).disabled,
    ).toBe(true);
  });

  it('optimizes each icon spec field independently and disables generation until both finish', async () => {
    const playSettingDeferred = createDeferred<string>();
    const artStyleDeferred = createDeferred<string>();
    iconSpecClientMocks.refineGamePlay.mockReturnValueOnce(
      playSettingDeferred.promise,
    );
    iconSpecClientMocks.refineArtStyle.mockReturnValueOnce(
      artStyleDeferred.promise,
    );
    render(<IconSpecHarness />);

    fireEvent.click(screen.getByRole('button', { name: '一键优化玩法设定' }));
    expect(
      (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).disabled,
    ).toBe(true);
    expect(
      (screen.getByLabelText('美术风格') as HTMLTextAreaElement).disabled,
    ).toBe(false);
    expect(
      screen.getByRole('button', { name: '一键优化玩法设定' }).textContent,
    ).toBe('正在优化');

    fireEvent.click(screen.getByRole('button', { name: '一键优化美术风格' }));
    expect(
      (
        screen.getByRole('button', {
          name: '提交生成规范',
        }) as HTMLButtonElement
      ).disabled,
    ).toBe(true);

    await act(async () => playSettingDeferred.resolve('优化后的玩法'));
    await waitFor(() =>
      expect(
        (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).value,
      ).toBe('优化后的玩法'),
    );
    expect(
      (
        screen.getByRole('button', {
          name: '提交生成规范',
        }) as HTMLButtonElement
      ).disabled,
    ).toBe(true);

    await act(async () => artStyleDeferred.resolve('优化后的画风'));
    await waitFor(() =>
      expect(
        (screen.getByLabelText('美术风格') as HTMLTextAreaElement).value,
      ).toBe('优化后的画风'),
    );
    expect(
      (
        screen.getByRole('button', {
          name: '提交生成规范',
        }) as HTMLButtonElement
      ).disabled,
    ).toBe(false);
  });

  it('ignores an optimization result after the active dialog changes', async () => {
    const deferred = createDeferred<string>();
    const updateSpecFormValue = vi.fn();
    iconSpecClientMocks.refineGamePlay.mockReturnValueOnce(deferred.promise);
    const { rerender } = render(
      <ImageCanvasSpecGenerationPanelView
        dialog={createSpecDialog({ id: 'dialog-a', specType: 'icon' })}
        style={{ left: 10, top: 20 }}
        onUpdateSpecFormValue={updateSpecFormValue}
        onRequestUpload={vi.fn()}
        onSubmit={vi.fn()}
      />,
    );

    fireEvent.click(screen.getByRole('button', { name: '一键优化玩法设定' }));
    rerender(
      <ImageCanvasSpecGenerationPanelView
        dialog={createSpecDialog({ id: 'dialog-b', specType: 'icon' })}
        style={{ left: 10, top: 20 }}
        onUpdateSpecFormValue={updateSpecFormValue}
        onRequestUpload={vi.fn()}
        onSubmit={vi.fn()}
      />,
    );
    await act(async () => deferred.resolve('不应写入新对话框'));

    expect(updateSpecFormValue).not.toHaveBeenCalled();
    expect(screen.queryByRole('alert')).toBeNull();
  });

  it('keeps one undo snapshot per icon spec field and replaces it after a later successful optimization', async () => {
    iconSpecClientMocks.refineGamePlay
      .mockResolvedValueOnce('第一次优化')
      .mockResolvedValueOnce('第二次优化');
    render(<IconSpecHarness />);

    fireEvent.click(screen.getByRole('button', { name: '一键优化玩法设定' }));
    await waitFor(() =>
      expect(
        (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).value,
      ).toBe('第一次优化'),
    );
    fireEvent.click(screen.getByRole('button', { name: '撤销玩法设定优化' }));
    expect(
      (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).value,
    ).toBe('回合制占点');
    expect(
      screen.queryByRole('button', { name: '撤销玩法设定优化' }),
    ).toBeNull();

    fireEvent.change(screen.getByLabelText('玩法设定'), {
      target: { value: '手动修改玩法' },
    });
    fireEvent.click(screen.getByRole('button', { name: '一键优化玩法设定' }));
    await waitFor(() =>
      expect(
        (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).value,
      ).toBe('第二次优化'),
    );
    fireEvent.click(screen.getByRole('button', { name: '撤销玩法设定优化' }));
    expect(
      (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).value,
    ).toBe('手动修改玩法');
  });

  it('leaves text and the existing undo snapshot unchanged when optimization fails', async () => {
    iconSpecClientMocks.refineGamePlay
      .mockResolvedValueOnce('成功优化')
      .mockRejectedValueOnce(new Error('服务暂不可用'));
    render(<IconSpecHarness />);

    fireEvent.click(screen.getByRole('button', { name: '一键优化玩法设定' }));
    await waitFor(() =>
      expect(
        (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).value,
      ).toBe('成功优化'),
    );
    fireEvent.change(screen.getByLabelText('玩法设定'), {
      target: { value: '失败前文本' },
    });
    fireEvent.click(screen.getByRole('button', { name: '一键优化玩法设定' }));

    await waitFor(() =>
      expect(screen.getByRole('alert').textContent).toContain('服务暂不可用'),
    );
    expect(
      (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).value,
    ).toBe('失败前文本');
    fireEvent.click(screen.getByRole('button', { name: '撤销玩法设定优化' }));
    expect(
      (screen.getByLabelText('玩法设定') as HTMLTextAreaElement).value,
    ).toBe('回合制占点');
  });

  it('renders custom prompt and hides reference upload for icon specs', () => {
    const updateSpecFormValue = vi.fn();
    renderPanel({
      dialog: createSpecDialog({
        specType: 'custom',
        specValues: {
          playSetting: '',
          artStyle: '',
          bodyRatio: '3',
          characterView: '',
          customPrompt: '自定义提示',
        },
      }),
      onUpdateSpecFormValue: updateSpecFormValue,
    });

    const customPrompt = screen.getByLabelText(
      '自定义规范提示词',
    ) as HTMLTextAreaElement;
    expect(customPrompt.placeholder).toBe(
      '写下你想要的任何内容，陶泥儿帮你形成新的约束',
    );

    fireEvent.change(screen.getByLabelText('自定义规范提示词'), {
      target: { value: '新的规范提示' },
    });

    expect(updateSpecFormValue).toHaveBeenCalledWith(
      'customPrompt',
      '新的规范提示',
    );

    cleanup();
    renderPanel({ dialog: createSpecDialog({ specType: 'icon' }) });

    expect(screen.getByRole('button', { name: '参考图' })).toBeTruthy();
  });

  it('requests reference upload and submits while idle', () => {
    const requestUpload = vi.fn();
    const submitSpec = vi.fn();
    const dialog = createSpecDialog();
    renderPanel({
      dialog,
      onRequestUpload: requestUpload,
      onSubmit: submitSpec,
    });

    fireEvent.click(screen.getByRole('button', { name: '参考图' }));
    fireEvent.click(screen.getByRole('button', { name: '提交生成规范' }));

    expect(requestUpload).toHaveBeenCalledWith('spec-reference');
    expect(submitSpec).toHaveBeenCalledWith(dialog);
  });

  it('renders compact spec submit cost with mud point text', () => {
    renderPanel({ dialog: createSpecDialog() });

    const submitButton = screen.getByRole('button', { name: '提交生成规范' });

    expect(submitButton.textContent).toBe('生成5泥点');
  });

  it('disables controls while generating and renders failure state', () => {
    const submitSpec = vi.fn();
    const { rerender } = render(
      <ImageCanvasSpecGenerationPanelView
        dialog={createSpecDialog({ status: 'generating' })}
        style={{ left: 10, top: 20 }}
        onUpdateSpecFormValue={vi.fn()}
        onRequestUpload={vi.fn()}
        onSubmit={submitSpec}
      />,
    );

    fireEvent.click(screen.getByRole('button', { name: '提交生成规范' }));

    expect(
      (screen.getByLabelText('玩法设定') as HTMLInputElement).disabled,
    ).toBe(true);
    expect(submitSpec).not.toHaveBeenCalled();

    rerender(
      <ImageCanvasSpecGenerationPanelView
        dialog={createSpecDialog({
          status: 'failed',
          errorMessage: '生成失败',
        })}
        style={{ left: 10, top: 20 }}
        onUpdateSpecFormValue={vi.fn()}
        onRequestUpload={vi.fn()}
        onSubmit={submitSpec}
      />,
    );

    expect(screen.getByRole('alert').textContent).toContain('生成失败');
  });
});