var tcm = require('../../../../utils/tcm.js')

var COUNTRY_OPTIONS = [
  { value: '', label: '请选择' },
  { value: 'china', label: '中国' },
  { value: 'russia', label: '俄罗斯' },
  { value: 'kazakhstan', label: '哈萨克斯坦' },
  { value: 'mongolia', label: '蒙古' },
  { value: 'japan', label: '日本' },
  { value: 'korea', label: '韩国' },
  { value: 'usa', label: '美国' },
  { value: 'uk', label: '英国' },
  { value: 'germany', label: '德国' },
  { value: 'france', label: '法国' },
  { value: 'other', label: '其他' }
]

var RACE_OPTIONS = [
  { value: '', label: '请选择' },
  { value: 'asian', label: '亚裔' },
  { value: 'caucasian', label: '白人' },
  { value: 'african', label: '非裔' },
  { value: 'hispanic', label: '拉丁裔' },
  { value: 'mixed', label: '混血' },
  { value: 'other', label: '其他' }
]

var OCCUPATION_OPTIONS = [
  { value: '', label: '请选择' },
  { value: 'sedentary_office', label: '久坐办公（文员/行政/财务等）' },
  { value: 'it_programmer', label: 'IT/程序员' },
  { value: 'driver', label: '司机（出租车/货运/公交等）' },
  { value: 'teacher', label: '教师/培训师' },
  { value: 'medical_staff', label: '医护人员' },
  { value: 'service_industry', label: '服务行业（餐饮/零售/酒店等）' },
  { value: 'heavy_labor', label: '重体力劳动（建筑/搬运/制造等）' },
  { value: 'outdoor_worker', label: '户外工作者（农业/快递/外卖等）' },
  { value: 'student', label: '学生' },
  { value: 'homemaker', label: '家庭主妇/夫' },
  { value: 'retired', label: '退休人员' },
  { value: 'other', label: '其他' }
]

function buildHeightOptions() {
  var list = []
  for (var i = 100; i <= 220; i++) {
    list.push({
      value: String(i),
      label: i + ' cm'
    })
  }
  return list
}

function buildWeightOptions() {
  var list = []
  for (var i = 60; i <= 400; i++) {
    var num = i / 2
    list.push({
      value: num.toFixed(1),
      label: num.toFixed(1) + ' kg'
    })
  }
  return list
}

var HEIGHT_OPTIONS = buildHeightOptions()
var TARGET_WEIGHT_OPTIONS = buildWeightOptions()

function findIndexByValue(list, value) {
  for (var i = 0; i < list.length; i++) {
    if (String(list[i].value) === String(value)) {
      return i
    }
  }
  return 0
}

function findLabelByValue(list, value) {
  var index = findIndexByValue(list, value)
  return list[index] ? list[index].label : '请选择'
}

function formatBirthday(value) {
  if (!value) {
    return '1999-01-01'
  }
  return String(value).split('T')[0]
}

function calcAge(birthday) {
  if (!birthday) {
    return 25
  }
  var date = new Date(birthday)
  if (isNaN(date.getTime())) {
    return 25
  }
  var now = new Date()
  var age = now.getFullYear() - date.getFullYear()
  var monthDiff = now.getMonth() - date.getMonth()
  var dayDiff = now.getDate() - date.getDate()
  if (monthDiff < 0 || (monthDiff === 0 && dayDiff < 0)) {
    age--
  }
  if (age < 1) {
    age = 1
  }
  return age
}

Page({
  data: {
    isEditMode: false,
    saving: false,
    sexIndex: 0,
    sexOptions: ['男', '女'],
    countryOptions: COUNTRY_OPTIONS,
    raceOptions: RACE_OPTIONS,
    occupationOptions: OCCUPATION_OPTIONS,
    heightOptions: HEIGHT_OPTIONS,
    targetWeightOptions: TARGET_WEIGHT_OPTIONS,
    countryIndex: 0,
    raceIndex: 0,
    occupationIndex: 0,
    heightIndex: findIndexByValue(HEIGHT_OPTIONS, '170'),
    targetWeightIndex: findIndexByValue(TARGET_WEIGHT_OPTIONS, '65.0'),
    form: {
      ID: null,
      active: true,
      avatar: '',
      birthday: '1999-01-01',
      deviceId: 0,
      height: '170',
      nickName: '',
      sex: 0,
      targetWeight: '65.0',
      wxUserId: 0,
      country: '',
      race: '',
      occupation: '',
      createdAt: '',
      updatedAt: ''
    }
  },

  onLoad: function (options) {
    if (options && options.mode === 'edit') {
      var user = wx.getStorageSync('tcmEditScaleUser')
      if (user && user.ID) {
        this.applyUserData(user)
      }
    }
  },

  applyUserData: function (user) {
    var birthday = formatBirthday(user.birthday || user.Birthday)
    var height = String(user.height || 170)
    var targetWeight = String(user.targetWeight || '65.0')
    var country = user.country || ''
    var race = user.race || ''
    var occupation = user.occupation || ''
    var sex = Number(user.sex || 0)

    this.setData({
      isEditMode: true,
      sexIndex: sex,
      countryIndex: findIndexByValue(COUNTRY_OPTIONS, country),
      raceIndex: findIndexByValue(RACE_OPTIONS, race),
      occupationIndex: findIndexByValue(OCCUPATION_OPTIONS, occupation),
      heightIndex: findIndexByValue(HEIGHT_OPTIONS, height),
      targetWeightIndex: findIndexByValue(TARGET_WEIGHT_OPTIONS, targetWeight),
      form: {
        ID: user.ID,
        active: user.active !== false,
        avatar: user.avatar || '',
        birthday: birthday,
        deviceId: user.deviceId || 0,
        height: height,
        nickName: user.nickName || '',
        sex: sex,
        targetWeight: targetWeight,
        wxUserId: user.wxUserId || 0,
        country: country,
        race: race,
        occupation: occupation,
        createdAt: user.createdAt || user.CreatedAt || '',
        updatedAt: user.updatedAt || user.UpdatedAt || ''
      }
    })
  },

  updateNickName: function (e) {
    this.setData({
      'form.nickName': e.detail.value
    })
  },

  updateBirthday: function (e) {
    this.setData({
      'form.birthday': e.detail.value
    })
  },

  changeSex: function (e) {
    var index = Number(e.detail.value)
    this.setData({
      sexIndex: index,
      'form.sex': index
    })
  },

  changeHeight: function (e) {
    var index = Number(e.detail.value)
    this.setData({
      heightIndex: index,
      'form.height': this.data.heightOptions[index].value
    })
  },

  changeTargetWeight: function (e) {
    var index = Number(e.detail.value)
    this.setData({
      targetWeightIndex: index,
      'form.targetWeight': this.data.targetWeightOptions[index].value
    })
  },

  changeCountry: function (e) {
    var index = Number(e.detail.value)
    this.setData({
      countryIndex: index,
      'form.country': this.data.countryOptions[index].value
    })
  },

  changeRace: function (e) {
    var index = Number(e.detail.value)
    this.setData({
      raceIndex: index,
      'form.race': this.data.raceOptions[index].value
    })
  },

  changeOccupation: function (e) {
    var index = Number(e.detail.value)
    this.setData({
      occupationIndex: index,
      'form.occupation': this.data.occupationOptions[index].value
    })
  },

  submitForm: function () {
    var that = this
    var form = that.data.form
    var height = Number(form.height)
    var targetWeight = Number(form.targetWeight)

    if (!form.nickName) {
      wx.showToast({
        title: '请输入昵称',
        icon: 'none'
      })
      return
    }

    if (form.nickName.length > 20) {
      wx.showToast({
        title: '昵称不能超过20个字符',
        icon: 'none'
      })
      return
    }

    if (!height || height < 100 || height > 220) {
      wx.showToast({
        title: '请选择正确身高',
        icon: 'none'
      })
      return
    }

    if (targetWeight && (targetWeight < 30 || targetWeight > 200)) {
      wx.showToast({
        title: '请选择正确目标体重',
        icon: 'none'
      })
      return
    }

    if (that.data.saving) {
      return
    }

    var now = new Date().toISOString()
    var birthday = form.birthday
    var payload = {
      ID: that.data.isEditMode ? form.ID : null,
      active: true,
      age: String(calcAge(birthday)),
      avatar: form.avatar || '',
      birthday: birthday,
      createdAt: form.createdAt || now,
      deviceId: form.deviceId || 0,
      height: String(height),
      nickName: form.nickName,
      sex: Number(form.sex),
      targetWeight: form.targetWeight || '65.0',
      updatedAt: now,
      wxUserId: form.wxUserId || 0,
      country: form.country || '',
      race: form.race || '',
      occupation: form.occupation || ''
    }

    that.setData({
      saving: true
    })

    var submitPromise = that.data.isEditMode ? tcm.updateScaleUser(payload) : tcm.createScaleUser(payload)

    submitPromise.then(function () {
      wx.setStorageSync('tcmUserChanged', true)
      wx.showToast({
        title: that.data.isEditMode ? '更新成功' : '创建成功',
        icon: 'success'
      })
      setTimeout(function () {
        wx.navigateBack()
      }, 300)
    }).catch(function (err) {
      that.setData({
        saving: false
      })
      wx.showToast({
        title: err && err.message ? err.message : '保存失败',
        icon: 'none'
      })
    })
  },

  getCountryLabel: function () {
    return findLabelByValue(COUNTRY_OPTIONS, this.data.form.country)
  },

  getRaceLabel: function () {
    return findLabelByValue(RACE_OPTIONS, this.data.form.race)
  },

  getOccupationLabel: function () {
    return findLabelByValue(OCCUPATION_OPTIONS, this.data.form.occupation)
  }
})