# app/components/Admin/FileUpload/index.coffee

# Добавление стилей компонента
if globalThis.stylFns and globalThis.stylFns['app/components/Admin/FileUpload/index.styl']
  styleElement = document.createElement('style')
  styleElement.type = 'text/css'
  styleElement.textContent = globalThis.stylFns['app/components/Admin/FileUpload/index.styl']
  document.head.appendChild(styleElement)
else
  log '⚠️ Стили FileUpload не найдены'

module.exports = 
  name: 'file-upload'
  props:
    accept:
      type: String
      default: '.csv,.xlsx,.xls'
    multiple:
      type: Boolean
      default: false
    maxSize:
      type: Number
      default: 10485760 # 10MB

  data: ->
    {
      isDragging: false
      selectedFiles: []
      uploadProgress: 0
      isUploading: false
    }

  methods:
    onDragOver: (event) ->
      event.preventDefault()
      @isDragging = true

    onDragLeave: (event) ->
      event.preventDefault()
      @isDragging = false

    onDrop: (event) ->
      event.preventDefault()
      @isDragging = false
      files = Array.from(event.dataTransfer.files)
      @handleFiles(files)

    onFileSelect: (event) ->
      files = Array.from(event.target.files)
      @handleFiles(files)

    handleFiles: (files) ->
      validFiles = files.filter (file) =>
        if file.size > @maxSize
          @$emit('error', 'Файл '+file.name+' слишком большой. Максимальный размер: '+(@maxSize / 1048576)+'MB')
          return false
        
        if @accept and !@isFileTypeAccepted(file)
          @$emit('error', 'Файл '+file.name+' имеет недопустимый тип')
          return false
        
        return true

      if @multiple
        @selectedFiles = [...@selectedFiles, ...validFiles]
      else
        @selectedFiles = validFiles.slice(0, 1)

      @$emit('select', @selectedFiles)

    isFileTypeAccepted: (file) ->
      acceptTypes = @accept.split(',').map (type) -> type.trim()
      return acceptTypes.some (type) =>
        if type.startsWith('.')
          return file.name.toLowerCase().endsWith(type.toLowerCase())
        else
          return file.type.match(type)

    removeFile: (index) ->
      @selectedFiles.splice(index, 1)
      @$emit('select', @selectedFiles)

    uploadFiles: ->
      if @selectedFiles.length == 0
        @$emit('error', 'Нет файлов для загрузки')
        return

      @isUploading = true
      @uploadProgress = 0

      # Имитация загрузки с использованием Promise вместо async/await
      uploadSimulation = =>
        interval = setInterval (=>
          @uploadProgress += 10
          if @uploadProgress >= 100
            clearInterval(interval)
            @isUploading = false
            @$emit('upload', @selectedFiles)
            @selectedFiles = []
        ), 100

      uploadSimulation()

    getFileIcon: (file) ->
      if file.type.includes('spreadsheet') or file.name.includes('.csv')
        return '📊'
      else if file.type.includes('image')
        return '🖼️'
      else
        return '📄'

  render: (new Function '_ctx', '_cache', globalThis.renderFns['app/components/Admin/FileUpload/index.pug'])()