import type {
  EditorAudioGenerationResult,
  EditorCharacterAnimationGenerationResult,
  EditorIconSpritesheetGenerationResult,
  EditorIconSpritesheetIconResult,
  EditorImageGenerationResult,
  EditorVideoGenerationResult,
} from '../../services/image-editor/editorProjectClient';
import { resolveLayerResolutionSize } from './ImageCanvasEditorModel';
import type {
  CanvasGenerationInputs,
  CanvasLayer,
  CanvasViewport,
  GenerateDialogState,
} from './ImageCanvasEditorTypes';
import {
  ICON_FRAME_DISPLAY_SIZE,
  ICON_FRAME_ORIGINAL_SIZE,
} from './ImageCanvasGenerationModel';

type CanvasSize = { width: number; height: number };

type GeneratedResultLayerOptions = {
  generated: EditorImageGenerationResult;
  generatedIndex: number;
  canvasSize: CanvasSize;
  viewport: CanvasViewport;
  sourceLayer?: CanvasLayer;
  frame?: GenerateDialogState['placeholder'];
  assetKind?: CanvasLayer['assetKind'];
  title?: string;
  generationInputs?: CanvasGenerationInputs;
};

type QuickEditResultLayerOptions = {
  generated: EditorImageGenerationResult;
  generatedIndex: number;
  sourceLayer: CanvasLayer;
  generationInputs: CanvasGenerationInputs;
  mode?: 'quick-edit' | 'redraw';
  frame?: GenerateDialogState['placeholder'];
};

type IconSpritesheetResultLayerOptions = {
  generated: EditorIconSpritesheetGenerationResult;
  iconResults: EditorIconSpritesheetIconResult[];
  startIndex: number;
  canvasSize: CanvasSize;
  viewport: CanvasViewport;
  generationInputs: CanvasGenerationInputs;
  frame?: GenerateDialogState['placeholder'];
  spritesheetTitle?: string;
};

type VideoResultLayerOptions = {
  generated: EditorVideoGenerationResult;
  generatedIndex: number;
  title: string;
  canvasSize: CanvasSize;
  viewport: CanvasViewport;
  generationInputs: CanvasGenerationInputs;
  frame?: GenerateDialogState['placeholder'];
};

type AudioResultLayerOptions = {
  generated: EditorAudioGenerationResult;
  generatedIndex: number;
  title: string;
  canvasSize: CanvasSize;
  viewport: CanvasViewport;
  generationInputs: CanvasGenerationInputs;
  frame?: GenerateDialogState['placeholder'];
};

type CharacterAnimationResultLayerOptions = {
  generated: EditorCharacterAnimationGenerationResult;
  generatedIndex: number;
  title: string;
  canvasSize: CanvasSize;
  viewport: CanvasViewport;
  generationInputs: CanvasGenerationInputs;
  frame?: GenerateDialogState['placeholder'];
};

function getViewportWorldCenter({
  canvasSize,
  viewport,
}: {
  canvasSize: CanvasSize;
  viewport: CanvasViewport;
}) {
  const safeScale = viewport.scale > 0 ? viewport.scale : 1;
  return {
    x: (canvasSize.width / 2 - viewport.x) / safeScale,
    y: (canvasSize.height / 2 - viewport.y) / safeScale,
  };
}

function applyGeneratedMetadata(
  layer: CanvasLayer,
  generated: EditorImageGenerationResult,
  generationInputs: CanvasGenerationInputs | undefined,
): CanvasLayer {
  const resource = generated.resource;
  const asset = generated.asset;
  return {
    ...layer,
    resourceId: resource?.resourceId ?? layer.resourceId,
    sourceAssetId: asset?.assetId ?? layer.sourceAssetId,
    prompt: generated.prompt,
    actualPrompt: generated.actualPrompt ?? generated.prompt,
    model: generated.model,
    provider: generated.provider,
    taskId: generated.taskId,
    objectKey: resource?.objectKey ?? generated.objectKey,
    assetObjectId: resource?.assetObjectId ?? generated.assetObjectId,
    assetKind:
      (resource?.assetKind as CanvasLayer['assetKind'] | undefined) ??
      layer.assetKind,
    generationInputs: resource?.generationInputs ?? generationInputs,
    generatedAssetSnapshot: asset,
  };
}

export function createGeneratedResultLayer({
  generated,
  generatedIndex,
  canvasSize,
  viewport,
  sourceLayer,
  frame,
  assetKind,
  title,
  generationInputs,
}: GeneratedResultLayerOptions): CanvasLayer {
  const originalWidth = generated.width || 1024;
  const originalHeight = generated.height || 1024;
  const { width, height } = resolveLayerResolutionSize(
    originalWidth,
    originalHeight,
    { width: 1024, height: 1024 },
  );
  const worldCenter = getViewportWorldCenter({ canvasSize, viewport });
  const frameX =
    frame && frame.width > 0
      ? frame.x + frame.width / 2 - width / 2
      : undefined;
  const frameY =
    frame && frame.height > 0
      ? frame.y + frame.height / 2 - height / 2
      : undefined;

  return applyGeneratedMetadata(
    {
      id: sourceLayer
        ? `layer-edit-${generatedIndex}`
        : `layer-generated-${generatedIndex}`,
      resourceId: sourceLayer
        ? `local-resource-edit-${generatedIndex}`
        : `local-resource-generated-${generatedIndex}`,
      title: sourceLayer
        ? `${sourceLayer.title} 修改结果`
        : (title ?? `生成图片 ${generatedIndex}`),
      src: generated.imageSrc,
      x: sourceLayer
        ? sourceLayer.x + sourceLayer.width + 32
        : (frameX ?? worldCenter.x - width / 2),
      y: sourceLayer ? sourceLayer.y : (frameY ?? worldCenter.y - height / 2),
      width,
      height,
      originalWidth,
      originalHeight,
      zIndex: generatedIndex + 10,
      sourceType: generated.sourceType,
      assetKind,
      sourceResourceId: sourceLayer?.resourceId,
    },
    generated,
    generationInputs,
  );
}

export function createQuickEditResultLayer({
  generated,
  generatedIndex,
  sourceLayer,
  generationInputs,
  mode = 'quick-edit',
  frame,
}: QuickEditResultLayerOptions): CanvasLayer {
  const originalWidth = generated.width || sourceLayer.originalWidth || 1024;
  const originalHeight = generated.height || sourceLayer.originalHeight || 1024;
  const { width, height } = resolveLayerResolutionSize(
    originalWidth,
    originalHeight,
    {
      width: sourceLayer.width,
      height: sourceLayer.height,
    },
  );
  const frameX =
    frame && frame.width > 0
      ? frame.x + frame.width / 2 - width / 2
      : undefined;
  const frameY =
    frame && frame.height > 0
      ? frame.y + frame.height / 2 - height / 2
      : undefined;

  return applyGeneratedMetadata(
    {
      id: `layer-quick-edit-${generatedIndex}`,
      resourceId: `local-resource-quick-edit-${generatedIndex}`,
      title: `${sourceLayer.title} ${mode === 'redraw' ? '重绘' : '快速编辑'}`,
      src: generated.imageSrc,
      x: frameX ?? sourceLayer.x + sourceLayer.width + 32,
      y: frameY ?? sourceLayer.y,
      width,
      height,
      originalWidth,
      originalHeight,
      zIndex: generatedIndex + 10,
      sourceType: generated.sourceType,
      sourceResourceId: sourceLayer.resourceId,
      groupId: sourceLayer.groupId,
      assetKind: sourceLayer.assetKind,
    },
    generated,
    generationInputs,
  );
}

export function createIconSpritesheetResultLayers({
  generated,
  iconResults,
  startIndex,
  canvasSize,
  viewport,
  generationInputs,
  frame,
  spritesheetTitle,
}: IconSpritesheetResultLayerOptions): CanvasLayer[] {
  const spritesheetResource = generated.spritesheetResource;
  const spritesheetAsset = generated.spritesheetAsset;
  const worldCenter = getViewportWorldCenter({ canvasSize, viewport });
  const startX =
    frame?.x ?? worldCenter.x - ICON_FRAME_DISPLAY_SIZE.width / 2;
  const startY =
    frame?.y ?? worldCenter.y - ICON_FRAME_DISPLAY_SIZE.height / 2;
  const spacing = 24;
  const maxRowWidth = 560;
  const spritesheetOriginalWidth =
    generated.spritesheetWidth || ICON_FRAME_ORIGINAL_SIZE.width;
  const spritesheetOriginalHeight =
    generated.spritesheetHeight || ICON_FRAME_ORIGINAL_SIZE.height;
  const spritesheetDisplaySize = resolveLayerResolutionSize(
    spritesheetOriginalWidth,
    spritesheetOriginalHeight,
    ICON_FRAME_DISPLAY_SIZE,
  );
  const spritesheetLayer: CanvasLayer = {
    id: `layer-icon-spritesheet-${startIndex}`,
    resourceId:
      spritesheetResource?.resourceId ??
      `local-resource-icon-spritesheet-${startIndex}`,
    title: spritesheetTitle ?? `图标素材图集 ${startIndex}`,
    src: generated.spritesheetImageSrc,
    x: startX,
    y: startY,
    width: spritesheetDisplaySize.width,
    height: spritesheetDisplaySize.height,
    originalWidth: spritesheetOriginalWidth,
    originalHeight: spritesheetOriginalHeight,
    zIndex: startIndex + 10,
    sourceType: 'generated',
    prompt: generated.prompt,
    actualPrompt: generated.actualPrompt ?? generated.prompt,
    model: generated.model,
    provider: generated.provider,
    taskId: generated.taskId,
    assetKind: 'icon-spritesheet',
    sourceAssetId: spritesheetAsset?.assetId,
    objectKey: spritesheetResource?.objectKey ?? undefined,
    assetObjectId: spritesheetResource?.assetObjectId ?? undefined,
    generationInputs:
      spritesheetResource?.generationInputs ?? generationInputs,
    generatedAssetSnapshot: spritesheetAsset,
  };
  const iconStartX = startX + spritesheetDisplaySize.width + 32;
  let cursorX = iconStartX;
  let cursorY = startY;
  let rowHeight = 0;

  const iconLayers = iconResults.map((icon, index) => {
    const resource = icon.resource;
    const asset = icon.asset;
    const originalWidth = icon.width || 128;
    const originalHeight = icon.height || 128;
    const { width, height } = resolveLayerResolutionSize(
      originalWidth,
      originalHeight,
      { width: 128, height: 128 },
    );
    if (cursorX > iconStartX && cursorX + width - iconStartX > maxRowWidth) {
      cursorX = iconStartX;
      cursorY += rowHeight + spacing;
      rowHeight = 0;
    }

    const generatedIndex = startIndex + index + 1;
    const layer: CanvasLayer = {
      id: `layer-icon-${generatedIndex}`,
      resourceId: resource?.resourceId ?? `local-resource-icon-${generatedIndex}`,
      title: icon.name,
      src: icon.imageSrc,
      x: cursorX,
      y: cursorY,
      width,
      height,
      originalWidth,
      originalHeight,
      zIndex: generatedIndex + 10,
      sourceType: 'generated',
      prompt: generated.prompt,
      actualPrompt: generated.actualPrompt ?? generated.prompt,
      model: generated.model,
      provider: generated.provider,
      taskId: generated.taskId,
      assetKind: 'icon',
      sourceAssetId: asset?.assetId,
      objectKey: resource?.objectKey ?? undefined,
      assetObjectId: resource?.assetObjectId ?? undefined,
      generationInputs: resource?.generationInputs ?? generationInputs,
      generatedAssetSnapshot: asset,
    };

    cursorX += width + spacing;
    rowHeight = Math.max(rowHeight, height);
    return layer;
  });

  return [spritesheetLayer, ...iconLayers];
}

export function createVideoResultLayer({
  generated,
  generatedIndex,
  title,
  canvasSize,
  viewport,
  generationInputs,
  frame,
}: VideoResultLayerOptions): CanvasLayer {
  const originalWidth = generated.width || 1280;
  const originalHeight = generated.height || 720;
  const { width, height } = resolveLayerResolutionSize(
    originalWidth,
    originalHeight,
    { width: 560, height: 315 },
  );
  const worldCenter = getViewportWorldCenter({ canvasSize, viewport });
  const frameX =
    frame && frame.width > 0
      ? frame.x + frame.width / 2 - width / 2
      : undefined;
  const frameY =
    frame && frame.height > 0
      ? frame.y + frame.height / 2 - height / 2
      : undefined;

  return {
    id: `layer-video-${generatedIndex}`,
    resourceId: `local-resource-video-${generatedIndex}`,
    title,
    src: generated.videoSrc,
    mediaType: 'video',
    assetKind: 'video',
    x: frameX ?? worldCenter.x - width / 2,
    y: frameY ?? worldCenter.y - height / 2,
    width,
    height,
    originalWidth,
    originalHeight,
    zIndex: generatedIndex + 10,
    sourceType: generated.sourceType,
    prompt: generated.prompt,
    actualPrompt: generated.actualPrompt ?? generated.prompt,
    model: generated.model,
    provider: generated.provider,
    taskId: generated.taskId,
    objectKey: generated.objectKey,
    assetObjectId: generated.assetObjectId,
    generationInputs,
  };
}

export function createAudioResultLayer({
  generated,
  generatedIndex,
  title,
  canvasSize,
  viewport,
  generationInputs,
  frame,
}: AudioResultLayerOptions): CanvasLayer {
  const originalWidth = generated.width || 420;
  const originalHeight = generated.height || 120;
  const { width, height } = resolveLayerResolutionSize(
    originalWidth,
    originalHeight,
    { width: 420, height: 120 },
  );
  const worldCenter = getViewportWorldCenter({ canvasSize, viewport });
  const frameX =
    frame && frame.width > 0
      ? frame.x + frame.width / 2 - width / 2
      : undefined;
  const frameY =
    frame && frame.height > 0
      ? frame.y + frame.height / 2 - height / 2
      : undefined;

  return {
    id: `layer-audio-${generatedIndex}`,
    resourceId: `local-resource-audio-${generatedIndex}`,
    title,
    src: generated.audioSrc,
    mediaType: 'audio',
    assetKind: generated.audioKind,
    x: frameX ?? worldCenter.x - width / 2,
    y: frameY ?? worldCenter.y - height / 2,
    width,
    height,
    originalWidth,
    originalHeight,
    zIndex: generatedIndex + 10,
    sourceType: generated.sourceType,
    prompt: generated.prompt,
    actualPrompt: generated.actualPrompt ?? generated.prompt,
    model: generated.model,
    provider: generated.provider,
    taskId: generated.taskId,
    objectKey: generated.objectKey,
    assetObjectId: generated.assetObjectId,
    durationSeconds: generated.durationSeconds ?? undefined,
    generationInputs,
  };
}

export function createCharacterAnimationResultLayer({
  generated,
  generatedIndex,
  title,
  canvasSize,
  viewport,
  generationInputs,
  frame,
}: CharacterAnimationResultLayerOptions): CanvasLayer | null {
  const previewFrame = generated.frames[0];
  if (!previewFrame) {
    return null;
  }
  const originalWidth = previewFrame.width || 1024;
  const originalHeight = previewFrame.height || 1024;
  const { width, height } = resolveLayerResolutionSize(
    originalWidth,
    originalHeight,
    { width: 420, height: 420 },
  );
  const worldCenter = getViewportWorldCenter({ canvasSize, viewport });
  const frameX =
    frame && frame.width > 0
      ? frame.x + frame.width / 2 - width / 2
      : undefined;
  const frameY =
    frame && frame.height > 0
      ? frame.y + frame.height / 2 - height / 2
      : undefined;

  return {
    id: `layer-character-animation-${generatedIndex}`,
    resourceId: `local-resource-character-animation-${generatedIndex}`,
    title,
    src: previewFrame.imageSrc,
    x: frameX ?? worldCenter.x - width / 2,
    y: frameY ?? worldCenter.y - height / 2,
    width,
    height,
    originalWidth,
    originalHeight,
    zIndex: generatedIndex + 10,
    sourceType: 'generated',
    prompt: generated.prompt,
    actualPrompt: generated.prompt,
    model: generated.model,
    provider: 'ark',
    taskId: generated.taskId,
    assetKind: 'character-animation',
    generationInputs,
  };
}