/**
 * 工作流解析：getActionName、calculateSwipeCoordinates、parseOldFormatAction
 * parseWorkflow / parseActions / parseNewFormatAction 仍由主机实现（依赖 state、actionRegistry 与 resolver）
 */
function getActionName(action) {
  const typeNames = {
    'schedule': '定时执行',
    'adb': 'ADB操作',
    'press': '点击图片',
    'input': '输入文本',
    'swipe': '滑动',
    'string-press': '点击文字',
    'scroll': '滚动',
    'locate': '定位',
    'click': '点击',
    'ocr': '文字识别',
    'extract-messages': '提取消息记录',
    'save-messages': '保存消息记录',
    'generate-summary': '生成总结',
    'ocr-chat': 'OCR识别对话',
    'ocr-chat-history': 'OCR提取消息记录',
    'extract-chat-history': '提取消息记录',
    'generate-history-summary': '生成总结',
    'img-bounding-box-location': '图像区域定位',
    'img-center-point-location': '图像中心点定位',
    'img-cropping': '裁剪图片区域',
    'read-last-message': '读取最后一条消息',
    'read-txt': '读取文本文件',
    'read-text': '读取文本文件',
    'save-txt': '保存文本文件',
    'save-text': '保存文本文件',
    'smart-chat-append': '智能合并聊天记录',
    'ai-generate': 'AI生成',
    'if': '条件判断',
    'for': '循环',
    'while': '循环',
    'delay': '延迟',
    'set': '设置变量',
    'random': '生成随机数',
    'echo': '打印信息',
    'log': '打印信息',
  }
  const typeName = typeNames[action.type] || action.type
  const value = action.value || action.target || ''
  const displayValue = typeof value === 'string' ? value : JSON.stringify(value)
  if (action.type === 'schedule') {
    const condition = action.condition || {}
    const interval = condition.interval || '0s'
    const repeat = condition.repeat !== undefined ? condition.repeat : 1
    const repeatText = repeat === -1 ? '无限循环' : `重复${repeat}次`
    return `${typeName}: ${interval}, ${repeatText}`
  }
  if (action.type === 'input') {
    return `${typeName}: ${displayValue.length > 20 ? displayValue.substring(0, 20) + '...' : displayValue}`
  }
  if (action.type === 'string-press' || action.type === 'click') {
    return `${typeName}: ${displayValue.length > 20 ? displayValue.substring(0, 20) + '...' : displayValue}`
  }
  if (action.type === 'if') return `${typeName}: ${action.condition || ''}`
  if (action.type === 'for') return `${typeName}: ${action.variable || ''}`
  if (action.type === 'set') return `${typeName}: ${action.variable || ''}`
  return `${typeName}: ${displayValue}`
}

function calculateSwipeCoordinates(direction, width, height) {
  const margin = 0.15
  const swipeDistance = 0.7
  let x1, y1, x2, y2
  switch (direction) {
    case 'up-down':
      x1 = x2 = Math.round(width / 2)
      y1 = Math.round(height * margin)
      y2 = Math.round(height * (margin + swipeDistance))
      break
    case 'down-up':
      x1 = x2 = Math.round(width / 2)
      y1 = Math.round(height * (margin + swipeDistance))
      y2 = Math.round(height * margin)
      break
    case 'left-right':
      y1 = y2 = Math.round(height / 2)
      x1 = Math.round(width * margin)
      x2 = Math.round(width * (margin + swipeDistance))
      break
    case 'right-left':
      y1 = y2 = Math.round(height / 2)
      x1 = Math.round(width * (margin + swipeDistance))
      x2 = Math.round(width * margin)
      break
    default:
      throw new Error(`未知的滑动方向: ${direction}`)
  }
  return { x1, y1, x2, y2 }
}

function parseOldFormatAction(action) {
  const times = action.times && action.times > 0 ? parseInt(action.times, 10) : 1
  const data = action.data || ''
  const delay = action.delay || ''
  if (action.press) {
    return { type: 'press', value: action.press, times, data, delay }
  }
  if (action.input !== undefined) {
    return { type: 'input', value: action.input, times, data, delay }
  }
  if (action.swipe) {
    const valid = ['up-down', 'down-up', 'left-right', 'right-left']
    if (!valid.includes(action.swipe)) return null
    return { type: 'swipe', value: action.swipe, times, data, delay }
  }
  if (action['string-press']) {
    return { type: 'string-press', value: action['string-press'], times, data, delay }
  }
  if (action.scroll) {
    const valid = ['up-down', 'down-up', 'left-right', 'right-left']
    if (!valid.includes(action.scroll)) return null
    return { type: 'scroll', value: action.scroll, times, data, delay }
  }
  return null
}

module.exports = {
  getActionName,
  calculateSwipeCoordinates,
  parseOldFormatAction,
}