const Province = {
  "上海市": ["上海市"]
}
const City = {
  "上海市": ['金山区', '徐汇区', '静安区', '普陀区', '长宁区', '虹口区', '杨浦区', '闵行区', '宝山区', '嘉定区', '浦东新区', '黄浦区', '松江区', '青浦区', '奉贤区', '崇明区']
}
const District = {
  //上海市
  '金山区': ['石化街道', '金山工业区', '金山第二工业区', '朱泾镇', '枫泾镇', '张堰镇', '亭林镇', '吕巷镇', '廊下镇', '金山卫镇', '漕泾镇', '山阳镇'],
  '徐汇区': [],
  '长宁区': [],
  '静安区': [],
  '普陀区': [],
  '虹口区': [],
  '杨浦区': [],
  '闵行区': [],
  '宝山区': [],
  '嘉定区': [],
  '浦东新区': [],
  '黄浦区': [],
  '松江区': [],
  '青浦区': [],
  '奉贤区': [],
  '崇明区': []
}

const locations = function (indexs) {
  var names = []
  var selecteds = []
  if (indexs.length > 0) {
    //省份列表
    var pList = Object.keys(Province)
    //省份名称
    var pName = pList[indexs[0]]
    names.push(pList)
    selecteds.push(pName)

    if (indexs.length > 1) {
      //城市列表
      var cList = Province[pName]
      //城市名称
      var cName = cList[indexs[1]]
      names.push(cList)
      selecteds.push(cName)

      if (indexs.length > 2) {
        //区县列表
        var dList = City[cName]
        //区县名称
        var dName = dList[indexs[2]]
        names.push(dList)
        selecteds.push(dName)

        if (indexs.length > 3) {
          //街镇列表
          var tList = District[dName]
          //街镇名称
          var tName = tList[indexs[3]]
          names.push(tList)
          selecteds.push(tName)
        }
      }
    }
  }
  var selectedDes = ""
  selecteds.forEach(str => {
    if (str != undefined && selectedDes != str) {
      if (selectedDes != "") {
        selectedDes += "-"
      }
      selectedDes += str
    }
  })

  return {
    names: names,
    values: indexs,
    selected: selecteds,
    des: selectedDes
  }
}

const multiIndex = function (selecteds) {
  var indexs = []
  var names = []
  if (selecteds.length > 0) {
    //省份列表
    var pList = Object.keys(Province)
    //省份名称
    var pIndex = pList.indexOf(selecteds[0])
    names.push(pList)
    if (pIndex != -1) {
      indexs.push(pIndex)
    } else {
      indexs.push(0)
    }

    if (selecteds.length > 1) {
      //城市列表
      var cList = Province[selecteds[0]]
      //城市名称
      var cIndex = cList.indexOf(selecteds[1])
      names.push(cList)
      if (cIndex != -1) {
        indexs.push(cIndex)
      } else {
        indexs.push(0)
      }

      if (selecteds.length > 2) {
        //区县列表
        var dList = City[selecteds[1]]
        //区县名称
        var dIndex = dList.indexOf(selecteds[2])
        names.push(dList)
        if (dIndex != -1) {
          indexs.push(dIndex)
        } else {
          indexs.push(0)
        }

        if (selecteds.length > 3) {
          //街镇列表
          var tList = District[selecteds[2]]
          //街镇名称
          var tIndex = tList.indexOf(selecteds[3])
          names.push(tList)
          if (tIndex != -1) {
            indexs.push(tIndex)
          } else {
            indexs.push(0)
          }
        }
      }
    }
  }
  var selectedDes = ""
  selecteds.forEach(str => {
    if (str != undefined && selectedDes != str) {
      if (selectedDes != "") {
        selectedDes += "-"
      }
      selectedDes += str
    }
  })

  return {
    names: names,
    values: indexs,
    selected: selecteds,
    des: selectedDes
  }
}

module.exports = {
  locations: locations,
  multiIndex: multiIndex
}