/**
 * Canvas Metadata Hook
 */

import { useState, useCallback } from 'react';

export interface CanvasMetadata {
  id?: string;
  projectId?: string;
  projectName?: string;
  lastSaved?: Date;
  version?: string;
  length?: number;
  relatedEntityId?: string;
  find?: (callback: (item: any) => boolean) => any;
  [key: number]: any;
}

export interface CanvasQueryResult {
  data: CanvasMetadata | null;
  isLoading: boolean;
  error: Error | null;
  refetch: () => Promise<void>;
}

export const useCanvasMetadata = (): CanvasQueryResult => {
  const [metadata, setMetadata] = useState<CanvasMetadata | null>(null);
  const [isLoading, setIsLoading] = useState(false);
  const [error, setError] = useState<Error | null>(null);

  const refetch = useCallback(async () => {
    setIsLoading(true);
    try {
      // Simulate API call
      await new Promise(resolve => setTimeout(resolve, 100));
      setMetadata({});
      setError(null);
    } catch (err) {
      setError(err instanceof Error ? err : new Error('Unknown error'));
    } finally {
      setIsLoading(false);
    }
  }, []);

  return {
    data: metadata,
    isLoading,
    error,
    refetch,
  };
};

// Alias hooks for backward compatibility
export const useProjectCanvases = (_projectId: string, _type?: string): CanvasQueryResult => useCanvasMetadata();
export const useAssetCanvas = (_assetId: string | null): CanvasQueryResult => useCanvasMetadata();
export const useStoryboardCanvas = (_storyboardId: string | null): CanvasQueryResult => useCanvasMetadata();

export interface CreateCanvasMutationResult {
  mutate: (variables?: any, options?: any) => void;
  mutateAsync: (variables?: any, options?: any) => Promise<any>;
  isLoading: boolean;
  error: Error | null;
  data: any;
}

export const useCreateGeneralCanvas = (): CreateCanvasMutationResult => ({
  mutate: () => {},
  mutateAsync: async () => ({} as any),
  isLoading: false,
  error: null,
  data: null,
});
