/**
 * 通用js方法封装处理
 */

const baseURL = process.env.VUE_APP_BASE_API

// 日期格式化
export function parseTime(time, pattern) {
  if (arguments.length === 0 || !time) {
    return null
  }
  const format = pattern || '{y}-{m}-{d} {h}:{i}:{s}'
  let date
  if (typeof time === 'object') {
    date = time
  } else {
    if (typeof time === 'string' && /^[0-9]+$/.test(time)) {
      time = parseInt(time)
    } else if (typeof time === 'string') {
      time = time.replace(new RegExp(/-/gm), '/')
    }
    if (typeof time === 'number' && time.toString().length === 10) {
      time = time * 1000
    }
    date = new Date(time)
  }
  const formatObj = {
    y: date.getFullYear(),
    m: date.getMonth() + 1,
    d: date.getDate(),
    h: date.getHours(),
    i: date.getMinutes(),
    s: date.getSeconds(),
    a: date.getDay()
  }
  const time_str = format.replace(/{(y|m|d|h|i|s|a)+}/g, (result, key) => {
    let value = formatObj[key]
    // Note: getDay() returns 0 on Sunday
    if (key === 'a') {
      return ['日', '一', '二', '三', '四', '五', '六'][value]
    }
    if (result.length > 0 && value < 10) {
      value = '0' + value
    }
    return value || 0
  })
  return time_str
}

// 表单重置
export function resetForm(refName) {
  if (this.$refs[refName]) {
    this.$refs[refName].resetFields()
  }
}

// 添加日期范围
export function addDateRange(params, dateRange) {
  var search = params
  search.beginTime = ''
  search.endTime = ''
  if (null != dateRange && '' != dateRange) {
    search.beginTime = this.dateRange[0]
    search.endTime = this.dateRange[1]
  }
  return search
}

// 回显数据字典
export function selectDictLabel(datas, value) {
  var actions = []
  Object.keys(datas).some((key) => {
    if (datas[key].dictValue == '' + value) {
      actions.push(datas[key].dictLabel)
      return true
    }
  })
  return actions.join('')
}

// 回显数据字典（字符串数组）
export function selectDictLabels(datas, value, separator) {
  var actions = []
  var currentSeparator = undefined === separator ? ',' : separator
  var temp = value.split(currentSeparator)
  Object.keys(value.split(currentSeparator)).some((val) => {
    Object.keys(datas).some((key) => {
      if (datas[key].dictValue == '' + temp[val]) {
        actions.push(datas[key].dictLabel + currentSeparator)
      }
    })
  })
  return actions.join('').substring(0, actions.join('').length - 1)
}

// 通用下载方法
export function download(fileName) {
  window.location.href =
    baseURL +
    '/common/download?fileName=' +
    encodeURI(fileName) +
    '&delete=' +
    true
}

// 字符串格式化(%s )
export function sprintf(str) {
  var args = arguments,
    flag = true,
    i = 1
  str = str.replace(/%s/g, function() {
    var arg = args[i++]
    if (typeof arg === 'undefined') {
      flag = false
      return ''
    }
    return arg
  })
  return flag ? str : ''
}

// 转换字符串，undefined,null等转化为""
export function praseStrEmpty(str) {
  if (!str || str == 'undefined' || str == 'null') {
    return ''
  }
  return str
}

/**
 * 构造树型结构数据
 * @param {*} data 数据源
 * @param {*} id id字段 默认 'id'
 * @param {*} parentId 父节点字段 默认 'parentId'
 * @param {*} children 孩子节点字段 默认 'children'
 */
export function handleTree(data, id, parentId, children) {
  id = id || 'id'
  parentId = parentId || 'parentId'
  children = children || 'children'
  let result = []
  data = JSON.parse(JSON.stringify(data))
  if (!Array.isArray(data)) {
    return result
  }
  data.forEach((item) => {
    delete item[children]
  })
  let map = {}
  data.forEach((item) => {
    map[item[id]] = item
  })
  data.forEach((item) => {
    let parent = map[item[parentId]]
    if (parent) {
      parent[children] || (parent[children] = [])
      parent[children].push(item)
    } else {
      result.push(item)
    }
  })
  return result
}

/**
 * dataURL转化为File对象
 * @param {*} dataURL 本地数据 base64
 */
export function dataURLtoFile(dataURL) {
  const arr = dataURL.split(',')
  const mime = arr[0].match(/:(.*?);/)[1]
  const bstr = atob(arr[1])
  let n = bstr.length
  const u8arr = new Uint8Array(n)
  while (n) {
    u8arr[n - 1] = bstr.charCodeAt(n - 1)
    n -= 1 // to make eslint happy
  }
  return new File([u8arr], '', { type: mime })
}
