import { defineStore } from 'pinia'

export const useUploadStore = defineStore('upload', {
  state: () => ({
    selectedFile: null,
    fileType: null, // 'image' ou 'video'
    filePreview: null,
    uploadStatus: 'idle', // 'idle', 'uploading', 'success', 'error'
    error: null,
    
    // Spécifique aux vidéos
    videoType: null, // 'static' ou 'dynamic'
    extractedFrame: null // Pour les vidéos statiques
  }),

  getters: {
    isFileSelected: (state) => state.selectedFile !== null,
    isImage: (state) => state.fileType === 'image',
    isVideo: (state) => state.fileType === 'video',
    isUploading: (state) => state.uploadStatus === 'uploading',
    
    // Nouveaux getters pour les vidéos
    isStaticVideo: (state) => state.fileType === 'video' && state.videoType === 'static',
    isDynamicVideo: (state) => state.fileType === 'video' && state.videoType === 'dynamic',
    shouldProcessDirectly: (state) => state.fileType === 'image' || state.isStaticVideo,
    needsParameters: (state) => state.isDynamicVideo
  },

  actions: {
    setFile(file) {
      this.selectedFile = file
      this.fileType = file.type.startsWith('image/') ? 'image' : 'video'
      this.createPreview(file)
      this.uploadStatus = 'idle'
      this.error = null
      
      // Reset video-specific data
      this.videoType = null
      this.extractedFrame = null
    },

    async setVideoType(type) {
      this.videoType = type
      if (type === 'static') {
        console.log('🔥 Starting frame extraction for static video...')
        await this.extractFrameFromVideo()
        console.log('🔥 Frame extraction completed:', {
          hasExtractedFrame: !!this.extractedFrame,
          extractedFrameType: this.extractedFrame?.type,
          extractedFrameName: this.extractedFrame?.name
        })
      }
    },

    createPreview(file) {
      if (file.type.startsWith('image/')) {
        this.filePreview = URL.createObjectURL(file)
      } else {
        this.filePreview = URL.createObjectURL(file)
      }
    },

    async extractFrameFromVideo() {
      if (!this.selectedFile || !this.isVideo) {
        console.error('🔥 Cannot extract frame: no file or not a video')
        return null
      }
      
      try {
        const video = document.createElement('video')
        video.src = URL.createObjectURL(this.selectedFile)
        
        return new Promise((resolve, reject) => {
          video.addEventListener('loadedmetadata', () => {
            console.log('🔥 Video metadata loaded, seeking to frame 0')
            video.currentTime = 0 // Première image
          })
          
          video.addEventListener('seeked', () => {
            try {
              console.log('🔥 Video seeked, drawing to canvas')
              const canvas = document.createElement('canvas')
              canvas.width = video.videoWidth
              canvas.height = video.videoHeight
              
              if (video.videoWidth === 0 || video.videoHeight === 0) {
                throw new Error('Video dimensions are 0')
              }
              
              const ctx = canvas.getContext('2d')
              ctx.drawImage(video, 0, 0)
              
              canvas.toBlob((blob) => {
                if (!blob) {
                  reject(new Error('Failed to create blob from canvas'))
                  return
                }
                
                // Créer un File avec un nom au lieu d'un Blob simple
                const file = new File([blob], 'extracted_frame.jpg', { type: 'image/jpeg' })
                this.extractedFrame = file
                console.log('🔥 Frame extracted successfully:', {
                  name: file.name,
                  type: file.type,
                  size: file.size
                })
                URL.revokeObjectURL(video.src)
                resolve(file)
              }, 'image/jpeg', 0.9)
            } catch (err) {
              console.error('🔥 Error during canvas operations:', err)
              URL.revokeObjectURL(video.src)
              reject(err)
            }
          })
          
          video.addEventListener('error', (err) => {
            console.error('🔥 Video loading error:', err)
            URL.revokeObjectURL(video.src)
            reject(err)
          })
          
          // Timeout de sécurité
          setTimeout(() => {
            console.error('🔥 Frame extraction timeout')
            URL.revokeObjectURL(video.src)
            reject(new Error('Frame extraction timeout'))
          }, 10000)
        })
      } catch (error) {
        console.error('🔥 Erreur extraction frame:', error)
        this.setError('Impossible d\'extraire une image de la vidéo: ' + error.message)
        return null
      }
    },

    clearFile() {
      if (this.filePreview) {
        URL.revokeObjectURL(this.filePreview)
      }
      this.selectedFile = null
      this.fileType = null
      this.filePreview = null
      this.uploadStatus = 'idle'
      this.error = null
      this.videoType = null
      this.extractedFrame = null
    },

    setUploadStatus(status) {
      this.uploadStatus = status
    },

    setError(error) {
      this.error = error
      this.uploadStatus = 'error'
    }
  }
})