/**
 * 预警等级、风险等级、风险点等级、危险源等级、级别转换
 */
export function levelConversion(level) {
	let levelStr;
	if (level == 1) {
		levelStr = '重大'
	} else if (level == 2) {
		levelStr = '较大'
	} else if (level == 3) {
		levelStr = '一般'
	} else if (level == 4) {
		levelStr = '低'
	} else {
		levelStr = '暂无'
	}
	return levelStr;
}

/**
 * 构建树JS
 * @param {Object} data
 */
export function toTreeText(data) {
	var val = []
	data.forEach(function(item) {
		var items = {}
		items.value = item.groupId
		items.text = item.groupName
		if (item.children) {
			items.children = toTreeText(item.children)
			val.push(items)
		} else {
			val.push(items)
		}
	})
	return val
}

// 只能转换 4000 以下的正整数阿拉伯数字
export function NumConvertLM(num) {
	if(!num) return ''
  var Roman = [['', 'I', 'Ⅱ', 'Ⅲ', 'Ⅳ', 'Ⅴ', 'Ⅵ', 'Ⅶ', 'Ⅷ', 'Ⅸ'],
    ['', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC'],
    ['', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM'],
    ['', 'M', 'MM', 'MMM', '  ', ' ', '  ', '   ', '    ', '  ']]

  if (isNaN(num)) return num
  var ReverseArr = num.toString().split('').reverse()
  var CorrectArr = []
  for (var i = 0; i < ReverseArr.length; i++) {
    CorrectArr.unshift(Roman[i][ReverseArr[i]])
  }
  return CorrectArr.join('')
}