import {
  type ChangeEvent,
  type Dispatch,
  type SetStateAction,
  useCallback,
  useRef,
  useState,
} from 'react';

import { ApiClientError } from '../../services/apiClient';
import { createEditorAsset } from '../../services/image-editor/editorProjectClient';
import { uploadEditorSeedanceReferenceFile } from '../../services/image-editor/editorReferenceUploadClient';
import type {
  CanvasLayer,
  CanvasTool,
  CanvasViewport,
  EditorAsset,
  EditorAssetFolder,
  GenerateDialogState,
  QuickEditPanelState,
  UploadTarget,
} from './ImageCanvasEditorTypes';
import {
  SEEDANCE_REFERENCE_FILE_LIMITS,
  isImageFile,
  isSeedanceReferenceAudioFile,
  isSeedanceReferenceImageFile,
  isSeedanceReferenceVideoFile,
  probeMediaDurationSeconds,
  readFileAsDataUrl,
  readImageFileAsDataUrl,
} from './ImageCanvasFileModel';
import {
  applyGenerationReferenceUpload,
  applyQuickEditReferenceUpload,
  applyMeasuredUploadAssetSize,
  applyPersistedUploadAsset,
  applyUploadAssetCreateFailure,
  applyUploadAssetCreatePending,
  applyUploadAssetReadFailure,
  applyUploadAssetReadSuccess,
  bindUploadLayerToPersistedAsset,
  createUploadCanvasLayer,
  createUploadedGenerationReference,
  createUploadingAssetPlaceholder,
  expandUploadFolder,
  resizeUploadCanvasLayerToImage,
  resolveUploadFolderId,
} from './ImageCanvasUploadModel';

type UploadFilesOptions = {
  folderId?: string;
  canvasPoint?: { x: number; y: number };
  addToCanvas?: boolean;
};

type UploadAssetFileOptions = UploadFilesOptions & {
  uploadIndex: number;
};

type UseImageCanvasUploadWorkflowOptions = {
  canAccessProtectedData: boolean;
  openEditorLoginModal: (postLoginAction?: (() => void) | null) => void;
  assetFolders: EditorAssetFolder[];
  activeUploadFolderId: string;
  canvasSize: { width: number; height: number };
  viewport: CanvasViewport;
  activeTool: CanvasTool;
  allocateUploadIndex: () => number;
  setAssetFolders: Dispatch<SetStateAction<EditorAssetFolder[]>>;
  setAssets: Dispatch<SetStateAction<EditorAsset[]>>;
  setLayers: Dispatch<SetStateAction<CanvasLayer[]>>;
  setGenerateDialog: Dispatch<SetStateAction<GenerateDialogState | null>>;
  setQuickEditPanel: Dispatch<SetStateAction<QuickEditPanelState | null>>;
  appendCanvasLayersWithResources: (nextLayers: CanvasLayer[]) => void;
  selectSingleLayer: (layerId: string | null) => void;
};

function isEditorAuthError(error: unknown) {
  return (
    error instanceof ApiClientError &&
    (error.status === 401 || error.status === 403)
  );
}

export function useImageCanvasUploadWorkflow({
  canAccessProtectedData,
  openEditorLoginModal,
  assetFolders,
  activeUploadFolderId,
  canvasSize,
  viewport,
  activeTool,
  allocateUploadIndex,
  setAssetFolders,
  setAssets,
  setLayers,
  setGenerateDialog,
  setQuickEditPanel,
  appendCanvasLayersWithResources,
  selectSingleLayer,
}: UseImageCanvasUploadWorkflowOptions) {
  const uploadInputRef = useRef<HTMLInputElement | null>(null);
  const canAccessProtectedDataRef = useRef(canAccessProtectedData);
  const uploadTargetRef = useRef<UploadTarget>('asset');
  const [uploadTarget, setUploadTargetState] = useState<UploadTarget>('asset');

  canAccessProtectedDataRef.current = canAccessProtectedData;

  const setUploadTarget: Dispatch<SetStateAction<UploadTarget>> = useCallback(
    (nextTarget) => {
      const resolvedTarget =
        typeof nextTarget === 'function'
          ? nextTarget(uploadTargetRef.current)
          : nextTarget;
      uploadTargetRef.current = resolvedTarget;
      setUploadTargetState(resolvedTarget);
    },
    [],
  );

  const addCharacterSpecReferenceFiles = useCallback(
    async (files: FileList | File[]) => {
      const imageFile = Array.from(files).find(isImageFile);
      if (!imageFile) {
        window.alert('请选择图片文件');
        return;
      }

      const imageSrc = await readImageFileAsDataUrl(imageFile);
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'character-spec',
          references: [
            createUploadedGenerationReference({
              idPrefix: 'upload-character-spec',
              fileName: imageFile.name,
              fallbackLabel: '角色规范',
              imageSrc,
            }),
          ],
        }),
      );
    },
    [setGenerateDialog],
  );

  const addSpecReferenceFiles = useCallback(
    async (files: FileList | File[]) => {
      const imageFile = Array.from(files).find(isImageFile);
      if (!imageFile) {
        window.alert('请选择图片文件');
        return;
      }

      const imageSrc = await readImageFileAsDataUrl(imageFile);
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'spec-reference',
          references: [
            createUploadedGenerationReference({
              idPrefix: 'upload-spec-reference',
              fileName: imageFile.name,
              fallbackLabel: '参考图',
              imageSrc,
            }),
          ],
        }),
      );
    },
    [setGenerateDialog],
  );

  const addCharacterReferenceFiles = useCallback(
    async (files: FileList | File[]) => {
      const imageFiles = Array.from(files).filter(isImageFile);
      if (!imageFiles.length) {
        window.alert('请选择图片文件');
        return;
      }

      const references = await Promise.all(
        imageFiles.map(async (file, index) => ({
          file,
          index,
          imageSrc: await readImageFileAsDataUrl(file),
        })),
      );
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'character-reference',
          references: references.map(({ file, imageSrc, index }) =>
            createUploadedGenerationReference({
              idPrefix: 'upload-character-reference',
              index,
              fileName: file.name,
              fallbackLabel: `参考图${index + 1}`,
              imageSrc,
            }),
          ),
        }),
      );
    },
    [setGenerateDialog],
  );

  const addGenerationReferenceFiles = useCallback(
    async (files: FileList | File[]) => {
      const imageFiles = Array.from(files).filter(isImageFile);
      if (!imageFiles.length) {
        window.alert('请选择图片文件');
        return;
      }

      const references = await Promise.all(
        imageFiles.map(async (file, index) => ({
          file,
          index,
          imageSrc: await readImageFileAsDataUrl(file),
        })),
      );
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'generation-reference',
          references: references.map(({ file, imageSrc, index }) =>
            createUploadedGenerationReference({
              idPrefix: 'upload-generation-reference',
              index,
              fileName: file.name,
              fallbackLabel: `参考图${index + 1}`,
              imageSrc,
            }),
          ),
        }),
      );
    },
    [setGenerateDialog],
  );

  const addQuickEditReferenceFiles = useCallback(
    async (files: FileList | File[]) => {
      const imageFiles = Array.from(files).filter(isImageFile);
      if (!imageFiles.length) {
        window.alert('请选择图片文件');
        return;
      }

      const references = await Promise.all(
        imageFiles.map(async (file, index) => ({
          file,
          index,
          imageSrc: await readImageFileAsDataUrl(file),
        })),
      );
      setQuickEditPanel((currentPanel) =>
        applyQuickEditReferenceUpload({
          panel: currentPanel,
          references: references.map(({ file, imageSrc, index }) =>
            createUploadedGenerationReference({
              idPrefix: 'upload-quick-edit-reference',
              index,
              fileName: file.name,
              fallbackLabel: `参考图${index + 1}`,
              imageSrc,
            }),
          ),
        }),
      );
    },
    [setQuickEditPanel],
  );

  const addVideoReferenceImageFiles = useCallback(
    async (files: FileList | File[]) => {
      const imageFiles = Array.from(files).filter(isSeedanceReferenceImageFile);
      if (!imageFiles.length) {
        window.alert('请选择 Seedance 支持的图片文件');
        return;
      }
      if (
        imageFiles.some(
          (file) => file.size >= SEEDANCE_REFERENCE_FILE_LIMITS.imageBytes,
        )
      ) {
        window.alert('参考图片单张必须小于 30MB');
        return;
      }
      const references = await Promise.all(
        imageFiles.map(async (file, index) => ({
          file,
          index,
          src: await readFileAsDataUrl(file),
        })),
      );
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'video-reference-image',
          references: references.map(({ file, src, index }) =>
            createUploadedGenerationReference({
              idPrefix: 'upload-video-reference-image',
              index,
              fileName: file.name,
              fallbackLabel: `参考图${index + 1}`,
              imageSrc: src,
              mediaType: 'image',
              mimeType: file.type || undefined,
              sizeBytes: file.size,
            }),
          ),
        }),
      );
    },
    [setGenerateDialog],
  );

  const addVideoReferenceVideoFiles = useCallback(
    async (files: FileList | File[]) => {
      const videoFiles = Array.from(files).filter(isSeedanceReferenceVideoFile);
      if (!videoFiles.length) {
        window.alert('请选择 mp4 或 mov 视频文件');
        return;
      }
      if (
        videoFiles.some(
          (file) => file.size > SEEDANCE_REFERENCE_FILE_LIMITS.videoBytes,
        )
      ) {
        window.alert('参考视频单个不能超过 50MB');
        return;
      }
      const references = await Promise.all(
        videoFiles.map(async (file, index) => {
          const durationSeconds = await probeMediaDurationSeconds(file, 'video');
          return {
            file,
            index,
            durationSeconds,
          };
        }),
      );
      if (
        references.some(
          ({ durationSeconds }) =>
            Number.isFinite(durationSeconds) &&
            (durationSeconds < SEEDANCE_REFERENCE_FILE_LIMITS.mediaMinDurationSeconds ||
              durationSeconds >
                SEEDANCE_REFERENCE_FILE_LIMITS.mediaMaxDurationSeconds),
        )
      ) {
        window.alert('参考视频时长必须为 2-15 秒');
        return;
      }
      const totalDuration = references.reduce(
        (sum, reference) =>
          Number.isFinite(reference.durationSeconds)
            ? sum + reference.durationSeconds
            : sum,
        0,
      );
      if (
        totalDuration >
        SEEDANCE_REFERENCE_FILE_LIMITS.mediaTotalDurationSeconds
      ) {
        window.alert('参考视频总时长不能超过 15 秒');
        return;
      }
      let uploadedReferences: Array<{
        file: File;
        index: number;
        durationSeconds: number;
        src: string;
        objectKey: string;
        assetObjectId: string;
      }>;
      try {
        uploadedReferences = await Promise.all(
          references.map(async ({ file, index, durationSeconds }) => {
            const uploaded = await uploadEditorSeedanceReferenceFile(file, 'video');
            return {
              file,
              index,
              durationSeconds,
              src: uploaded.src,
              objectKey: uploaded.objectKey,
              assetObjectId: uploaded.assetObjectId,
            };
          }),
        );
      } catch {
        window.alert('参考视频上传失败，请稍后重试');
        return;
      }
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'video-reference-video',
          references: uploadedReferences.map(({ file, src, index, durationSeconds, objectKey, assetObjectId }) =>
            createUploadedGenerationReference({
              idPrefix: 'upload-video-reference-video',
              index,
              fileName: file.name,
              fallbackLabel: `参考视频${index + 1}`,
              imageSrc: src,
              mediaType: 'video',
              mimeType: file.type || undefined,
              sizeBytes: file.size,
              durationSeconds,
              objectKey,
              assetObjectId,
            }),
          ),
        }),
      );
    },
    [setGenerateDialog],
  );

  const addVideoReferenceAudioFiles = useCallback(
    async (files: FileList | File[]) => {
      const audioFiles = Array.from(files).filter(isSeedanceReferenceAudioFile);
      if (!audioFiles.length) {
        window.alert('请选择 wav 或 mp3 音频文件');
        return;
      }
      if (
        audioFiles.some(
          (file) => file.size > SEEDANCE_REFERENCE_FILE_LIMITS.audioBytes,
        )
      ) {
        window.alert('参考音频单个不能超过 15MB');
        return;
      }
      const references = await Promise.all(
        audioFiles.map(async (file, index) => {
          const durationSeconds = await probeMediaDurationSeconds(file, 'audio');
          return {
            file,
            index,
            durationSeconds,
          };
        }),
      );
      if (
        references.some(
          ({ durationSeconds }) =>
            Number.isFinite(durationSeconds) &&
            (durationSeconds < SEEDANCE_REFERENCE_FILE_LIMITS.mediaMinDurationSeconds ||
              durationSeconds >
                SEEDANCE_REFERENCE_FILE_LIMITS.mediaMaxDurationSeconds),
        )
      ) {
        window.alert('参考音频时长必须为 2-15 秒');
        return;
      }
      const totalDuration = references.reduce(
        (sum, reference) =>
          Number.isFinite(reference.durationSeconds)
            ? sum + reference.durationSeconds
            : sum,
        0,
      );
      if (
        totalDuration >
        SEEDANCE_REFERENCE_FILE_LIMITS.mediaTotalDurationSeconds
      ) {
        window.alert('参考音频总时长不能超过 15 秒');
        return;
      }
      let uploadedReferences: Array<{
        file: File;
        index: number;
        durationSeconds: number;
        src: string;
        objectKey: string;
        assetObjectId: string;
      }>;
      try {
        uploadedReferences = await Promise.all(
          references.map(async ({ file, index, durationSeconds }) => {
            const uploaded = await uploadEditorSeedanceReferenceFile(file, 'audio');
            return {
              file,
              index,
              durationSeconds,
              src: uploaded.src,
              objectKey: uploaded.objectKey,
              assetObjectId: uploaded.assetObjectId,
            };
          }),
        );
      } catch {
        window.alert('参考音频上传失败，请稍后重试');
        return;
      }
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'video-reference-audio',
          references: uploadedReferences.map(({ file, src, index, durationSeconds, objectKey, assetObjectId }) =>
            createUploadedGenerationReference({
              idPrefix: 'upload-video-reference-audio',
              index,
              fileName: file.name,
              fallbackLabel: `参考音频${index + 1}`,
              imageSrc: src,
              mediaType: 'audio',
              mimeType: file.type || undefined,
              sizeBytes: file.size,
              durationSeconds,
              objectKey,
              assetObjectId,
            }),
          ),
        }),
      );
    },
    [setGenerateDialog],
  );

  const addIconSpecReferenceFiles = useCallback(
    async (files: FileList | File[]) => {
      const imageFile = Array.from(files).find(isImageFile);
      if (!imageFile) {
        window.alert('请选择图片文件');
        return;
      }

      const imageSrc = await readImageFileAsDataUrl(imageFile);
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'icon-spec',
          references: [
            createUploadedGenerationReference({
              idPrefix: 'upload-icon-spec',
              fileName: imageFile.name,
              fallbackLabel: '图标规范',
              imageSrc,
            }),
          ],
        }),
      );
    },
    [setGenerateDialog],
  );

  const addUiDesignSpecReferenceFiles = useCallback(
    async (files: FileList | File[]) => {
      const imageFile = Array.from(files).find(isImageFile);
      if (!imageFile) {
        window.alert('请选择图片文件');
        return;
      }

      const imageSrc = await readImageFileAsDataUrl(imageFile);
      setGenerateDialog((currentDialog) =>
        applyGenerationReferenceUpload({
          dialog: currentDialog,
          target: 'ui-design-icon-spec',
          references: [
            createUploadedGenerationReference({
              idPrefix: 'upload-ui-design-icon-spec',
              fileName: imageFile.name,
              fallbackLabel: 'UI设计图标规范',
              imageSrc,
            }),
          ],
        }),
      );
    },
    [setGenerateDialog],
  );

  const uploadAssetFile = useCallback(
    async (file: File, options: UploadAssetFileOptions) => {
      if (!isImageFile(file)) {
        window.alert('请选择图片文件');
        return;
      }

      const uploadFolderId = resolveUploadFolderId({
        assetFolders,
        requestedFolderId: options.folderId,
        activeUploadFolderId,
      });
      const uploadIndex = options.uploadIndex;
      const uploadedAsset = createUploadingAssetPlaceholder({
        uploadIndex,
        fileName: file.name,
        folderId: uploadFolderId,
      });
      setAssets((currentAssets) => [...currentAssets, uploadedAsset]);
      setAssetFolders((currentFolders) =>
        expandUploadFolder({
          folders: currentFolders,
          folderId: uploadFolderId,
        }),
      );

      let imageSrc = '';
      try {
        imageSrc = await readImageFileAsDataUrl(file);
        setAssets((currentAssets) =>
          applyUploadAssetReadSuccess({
            assets: currentAssets,
            uploadAssetId: uploadedAsset.id,
            imageSrc,
          }),
        );
      } catch {
        setAssets((currentAssets) =>
          applyUploadAssetReadFailure({
            assets: currentAssets,
            uploadAssetId: uploadedAsset.id,
          }),
        );
        return;
      }

      const nextLayer = createUploadCanvasLayer({
        uploadIndex,
        fileName: file.name,
        imageSrc,
        canvasPoint: options.canvasPoint,
        canvasSize,
        viewport,
      });

      if (options.addToCanvas) {
        appendCanvasLayersWithResources([nextLayer]);
        selectSingleLayer(nextLayer.id);
      }

      setAssets((currentAssets) =>
        applyUploadAssetCreatePending({
          assets: currentAssets,
          uploadAssetId: uploadedAsset.id,
        }),
      );
      createEditorAsset({
        folderId: uploadFolderId,
        label: uploadedAsset.label,
        imageSrc,
        width: uploadedAsset.width,
        height: uploadedAsset.height,
        sourceType: 'uploaded',
      })
        .then((asset) => {
          setAssets((currentAssets) =>
            applyPersistedUploadAsset({
              assets: currentAssets,
              uploadAssetId: uploadedAsset.id,
              persistedAsset: asset,
            }),
          );
          if (options.addToCanvas) {
            setLayers((currentLayers) =>
              bindUploadLayerToPersistedAsset({
                layers: currentLayers,
                layerId: nextLayer.id,
                persistedAsset: asset,
              }),
            );
          }
        })
        .catch((error: unknown) => {
          const isAuthError = isEditorAuthError(error);
          if (isAuthError) {
            openEditorLoginModal();
          }
          setAssets((currentAssets) =>
            applyUploadAssetCreateFailure({
              assets: currentAssets,
              uploadAssetId: uploadedAsset.id,
              message: isAuthError ? '请先登录' : '上传失败',
            }),
          );
        });

      if (imageSrc) {
        const uploadedImage = new Image();
        uploadedImage.onload = () => {
          const originalWidth =
            uploadedImage.naturalWidth || uploadedAsset.width;
          const originalHeight =
            uploadedImage.naturalHeight || uploadedAsset.height;
          if (options.addToCanvas) {
            setLayers((currentLayers) =>
              currentLayers.map((layer) =>
                layer.id === nextLayer.id
                  ? resizeUploadCanvasLayerToImage({
                      layer,
                      originalWidth,
                      originalHeight,
                      canvasPoint: options.canvasPoint,
                      canvasSize,
                      viewport,
                    })
                  : layer,
              ),
            );
          }
          setAssets((currentAssets) =>
            applyMeasuredUploadAssetSize({
              assets: currentAssets,
              uploadAssetId: uploadedAsset.id,
              originalWidth,
              originalHeight,
            }),
          );
        };
        uploadedImage.src = imageSrc;
      }
    },
    [
      activeUploadFolderId,
      appendCanvasLayersWithResources,
      assetFolders,
      canvasSize.height,
      canvasSize.width,
      openEditorLoginModal,
      selectSingleLayer,
      setAssetFolders,
      setAssets,
      setLayers,
      viewport.scale,
      viewport.x,
      viewport.y,
    ],
  );

  const addUploadedFiles = useCallback(
    (files: FileList | File[], options: UploadFilesOptions = {}) => {
      const imageFiles = Array.from(files);
      if (!canAccessProtectedDataRef.current) {
        openEditorLoginModal(() => {
          addUploadedFiles(imageFiles, options);
        });
        return;
      }
      imageFiles.forEach((file, index) => {
        const uploadIndex = allocateUploadIndex();
        void uploadAssetFile(file, {
          ...options,
          addToCanvas: options.addToCanvas ?? false,
          uploadIndex,
          canvasPoint: options.canvasPoint
            ? {
                x: options.canvasPoint.x + index * 28,
                y: options.canvasPoint.y + index * 28,
              }
            : undefined,
        });
      });
    },
    [
      allocateUploadIndex,
      openEditorLoginModal,
      uploadAssetFile,
    ],
  );

  const openUploadPicker = useCallback(
    (target: UploadTarget) => {
      setUploadTarget(target);
      uploadInputRef.current?.click();
    },
    [setUploadTarget],
  );

  const requestUpload = useCallback(
    (target: UploadTarget = 'asset') => {
      if (target === 'asset' && !canAccessProtectedDataRef.current) {
        openEditorLoginModal();
        return;
      }
      openUploadPicker(target);
    },
    [openEditorLoginModal, openUploadPicker],
  );

  const handleUploadInputChange = useCallback(
    (event: ChangeEvent<HTMLInputElement>) => {
      const files = event.currentTarget.files;
      const currentUploadTarget = uploadTargetRef.current;
      if (files?.length) {
        if (currentUploadTarget === 'spec-reference') {
          void addSpecReferenceFiles(files);
        } else if (currentUploadTarget === 'generation-reference') {
          void addGenerationReferenceFiles(files);
        } else if (currentUploadTarget === 'quick-edit-reference') {
          void addQuickEditReferenceFiles(files);
        } else if (currentUploadTarget === 'video-reference-image') {
          void addVideoReferenceImageFiles(files);
        } else if (currentUploadTarget === 'video-reference-video') {
          void addVideoReferenceVideoFiles(files);
        } else if (currentUploadTarget === 'video-reference-audio') {
          void addVideoReferenceAudioFiles(files);
        } else if (currentUploadTarget === 'character-spec') {
          void addCharacterSpecReferenceFiles(files);
        } else if (currentUploadTarget === 'character-reference') {
          void addCharacterReferenceFiles(files);
        } else if (currentUploadTarget === 'icon-spec') {
          void addIconSpecReferenceFiles(files);
        } else if (currentUploadTarget === 'ui-design-icon-spec') {
          void addUiDesignSpecReferenceFiles(files);
        } else {
          addUploadedFiles(files, { addToCanvas: activeTool === 'upload' });
        }
      }
      setUploadTarget('asset');
      event.currentTarget.value = '';
    },
    [
      activeTool,
      addCharacterReferenceFiles,
      addCharacterSpecReferenceFiles,
      addGenerationReferenceFiles,
      addQuickEditReferenceFiles,
      addVideoReferenceImageFiles,
      addVideoReferenceVideoFiles,
      addVideoReferenceAudioFiles,
      addSpecReferenceFiles,
      addIconSpecReferenceFiles,
      addUiDesignSpecReferenceFiles,
      addUploadedFiles,
      setUploadTarget,
    ],
  );

  return {
    uploadInputRef,
    uploadTarget,
    setUploadTarget,
    requestUpload,
    handleUploadInputChange,
    addUploadedFiles,
    addSpecReferenceFiles,
    addCharacterSpecReferenceFiles,
    addCharacterReferenceFiles,
    addGenerationReferenceFiles,
    addQuickEditReferenceFiles,
    addVideoReferenceImageFiles,
    addVideoReferenceVideoFiles,
    addVideoReferenceAudioFiles,
    addIconSpecReferenceFiles,
    addUiDesignSpecReferenceFiles,
  };
}