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

Page({
  data: {
    loading: true,
    status: 'loading',
    errorMessage: '',
    examId: '',
    scaleUserId: '',
    exam: null,
    scaleUser: null,
    latestScaleResult: null,
    statList: [],
    questionList: [],
    sectionList: [],
    imageList: [],
    reportTime: ''
  },

  timer: null,
  pollCount: 0,

  onLoad: function (options) {
    this.setData({
      examId: options.examId || '',
      scaleUserId: options.scaleUserId || ''
    })
    this.loadReport(false)
  },

  onUnload: function () {
    this.clearTimer()
  },

  loadReport: function (silent) {
    var that = this
    if (!silent) {
      that.setData({
        loading: true,
        errorMessage: ''
      })
    }

    var requestPromise = that.data.examId
      ? tcm.getExamDetail(that.data.examId)
      : tcm.getLatestExam(that.data.scaleUserId)

    requestPromise.then(function (data) {
      var exam = data && data.exam ? data.exam : null
      var aiSections = data && data.aiSections ? data.aiSections : {}
      var hasSections = that.buildSectionList(aiSections).length > 0

      if (!exam) {
        that.setData({
          loading: false,
          status: 'empty',
          exam: null,
          sectionList: [],
          imageList: []
        })
        return
      }

      var status = exam.status || 'pending'
      if (status === 'completed' && !hasSections) {
        status = 'generating'
      }

      that.setData({
        loading: false,
        status: status,
        exam: exam,
        scaleUser: data.scaleUser || null,
        latestScaleResult: data.latestScaleResult || null,
        statList: that.buildStatList(data.scaleUser || null, data.latestScaleResult || null),
        questionList: that.buildQuestionList(data.questionAnswersLocalizedExpanded || {}),
        sectionList: that.buildSectionList(aiSections),
        imageList: that.buildImageList(exam.observationImagesOss || exam.observationImages || {}),
        errorMessage: aiSections && aiSections.error ? compliance.sanitizeText(aiSections.error) : '',
        reportTime: that.formatDateTime(exam.CreatedAt || '')
      })

      if (status === 'pending' || status === 'generating') {
        if (!that.timer) {
          that.startPolling()
        }
      } else {
        that.clearTimer()
      }
    }).catch(function (err) {
      that.setData({
        loading: false,
        status: 'error',
        errorMessage: err && err.message ? compliance.sanitizeText(err.message) : '报告加载失败'
      })
    })
  },

  buildQuestionList: function (source) {
    var list = []
    if (Array.isArray(source)) {
      return compliance.sanitizeValue(source)
    }
    for (var key in source) {
      list.push({
        title: compliance.sanitizeText(key),
        value: compliance.sanitizeText(Array.isArray(source[key]) ? source[key].join('，') : source[key])
      })
    }
    return list
  },

  buildSectionList: function (aiSections) {
    var mapping = [
      { key: 'general', title: '一般情况', badge: '壹' },
      { key: 'inquiry', title: '健康问答分析', badge: '贰' },
      { key: 'observation', title: '图片分析', badge: '叁' },
      { key: 'constitution', title: '体质分析', badge: '肆' },
      { key: 'advice', title: '调养建议', badge: '伍' },
      { key: 'summary', title: '报告摘要', badge: '陆' }
    ]
    var list = []
    for (var i = 0; i < mapping.length; i++) {
      if (aiSections && aiSections[mapping[i].key]) {
        list.push({
          key: mapping[i].key,
          badge: mapping[i].badge,
          title: mapping[i].title,
          content: compliance.sanitizeText(aiSections[mapping[i].key])
        })
      }
    }
    return list
  },

  buildStatList: function (scaleUser, latestScaleResult) {
    var list = []
    if (scaleUser) {
      if (scaleUser.sex !== undefined && scaleUser.sex !== null) {
        list.push({
          label: '性别',
          value: Number(scaleUser.sex) === 1 ? '女' : '男'
        })
      }
      if (scaleUser.age) {
        list.push({
          label: '年龄',
          value: scaleUser.age + '岁'
        })
      }
      if (scaleUser.height) {
        list.push({
          label: '身高',
          value: scaleUser.height + 'cm'
        })
      }
    }

    if (latestScaleResult) {
      var weight = latestScaleResult.weight_kg || latestScaleResult.weight
      if (weight) {
        list.push({
          label: '体重',
          value: this.formatValue(weight) + 'kg'
        })
      }
      if (latestScaleResult.bodyScore) {
        list.push({
          label: '评分',
          value: this.formatValue(latestScaleResult.bodyScore) + '分'
        })
      }
    }

    return list.slice(0, 5)
  },

  formatDateTime: function (value) {
    if (!value) {
      return ''
    }
    return String(value).replace('T', ' ').slice(0, 16)
  },

  formatValue: function (value) {
    if (value === undefined || value === null || value === '') {
      return '--'
    }
    var num = Number(value)
    if (isNaN(num)) {
      return String(value)
    }
    if (Math.floor(num) === num) {
      return String(num)
    }
    return num.toFixed(1).replace(/\.0$/, '')
  },

  buildImageList: function (images) {
    var mapping = {
      tongue: '舌面',
      tongueBottom: '舌下',
      face: '面部',
      body: '全身'
    }
    var orderedKeys = ['tongue', 'tongueBottom', 'face', 'body']
    if (typeof images === 'string' && images) {
      try {
        images = JSON.parse(images)
      } catch (err) {
        images = {}
      }
    }
    var list = []
    for (var i = 0; i < orderedKeys.length; i++) {
      var key = orderedKeys[i]
      var urls = images ? images[key] : null
      if (Array.isArray(urls) && urls.length) {
        list.push({
          title: mapping[key],
          url: urls[0]
        })
      } else if (typeof urls === 'string' && urls) {
        list.push({
          title: mapping[key],
          url: urls
        })
      }
    }
    return list
  },

  startPolling: function () {
    var that = this
    that.clearTimer()
    that.pollCount = 0
    that.timer = setInterval(function () {
      that.pollCount++
      if (that.pollCount > 60) {
        that.clearTimer()
        that.setData({
          status: 'error',
          errorMessage: '报告生成超时，请稍后重新查看'
        })
        return
      }
      that.loadReport(true)
    }, 3000)
  },

  clearTimer: function () {
    if (this.timer) {
      clearInterval(this.timer)
      this.timer = null
    }
  },

  previewReportImage: function (e) {
    var current = e.currentTarget.dataset.src
    var urls = this.data.imageList.map(function (item) {
      return item.url
    })
    wx.previewImage({
      current: current,
      urls: urls
    })
  },

  retryReport: function () {
    this.clearTimer()
    this.loadReport(false)
  },

  goDiagnosis: function () {
    wx.redirectTo({
      url: '/packageWellness/pages/tcm/diagnosis/diagnosis'
    })
  }
})