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

var EXAMPLE_IMAGES = {
  tongue: 'https://cfohow.hiwavo.com/fohow-app/xcx/tcm/sheup.png',
  tongueBottom: 'https://cfohow.hiwavo.com/fohow-app/xcx/tcm/shedown.png',
  face: 'https://cfohow.hiwavo.com/fohow-app/xcx/tcm/face.png'
}

var USER_OPTION_LABELS = {
  country: {
    china: '中国',
    russia: '俄罗斯',
    kazakhstan: '哈萨克斯坦',
    mongolia: '蒙古',
    japan: '日本',
    korea: '韩国',
    usa: '美国',
    uk: '英国',
    germany: '德国',
    france: '法国',
    other: '其他'
  },
  race: {
    asian: '亚裔',
    caucasian: '白人',
    african: '非裔',
    hispanic: '拉丁裔',
    mixed: '混血',
    other: '其他'
  },
  occupation: {
    sedentary_office: '久坐办公（文员/行政/财务等）',
    it_programmer: 'IT/程序员',
    driver: '司机（出租车/货运/公交等）',
    teacher: '教师/培训师',
    medical_staff: '健康护理人员',
    service_industry: '服务行业（餐饮/零售/酒店等）',
    heavy_labor: '重体力劳动（建筑/搬运/制造等）',
    outdoor_worker: '户外工作者（农业/快递/外卖等）',
    student: '学生',
    homemaker: '家庭主妇/夫',
    retired: '退休人员',
    other: '其他'
  }
}

Page({
  data: {
    currentStep: 0,
    loadingUsers: true,
    loadingTips: true,
    loadingQuestions: false,
    submitting: false,
    showUserPopup: false,
    showExamplePopup: false,
    exampleTitle: '',
    exampleImage: '',
    currentUser: null,
    scaleUsers: [],
    photoTipsTitle: '拍摄注意事项',
    photoTips: [
      '自然光或均匀灯光下拍摄，避免逆光、偏暗与强曝光。',
      '保持镜头稳定，对焦清晰，确保舌面纹理可见。',
      '舌下与面部照片请正对镜头，避免大角度侧拍。'
    ],
    uploadCards: [
      {
        key: 'tongue',
        title: '舌面',
        desc: '请伸出舌头，拍摄舌面正面照，需清晰展示舌面颜色和纹理',
        required: true,
        localPath: '',
        url: '',
        uploading: false
      },
      {
        key: 'tongueBottom',
        title: '舌下',
        desc: '请翘起舌头，拍摄舌底照片，需清晰展示舌下纹理',
        required: true,
        localPath: '',
        url: '',
        uploading: false
      },
      {
        key: 'face',
        title: '面部',
        desc: '请正对镜头拍摄面部照片，需清晰展示面部整体状态',
        required: true,
        localPath: '',
        url: '',
        uploading: false
      },
      {
        key: 'body',
        title: '全身',
        desc: '请拍摄全身正面照片，用于辅助体态与整体状态分析，可选上传',
        required: false,
        localPath: '',
        url: '',
        uploading: false
      }
    ],
    questionList: [],
    extraNote: ''
  },

  onLoad: function () {
    this.loadBaseData()
  },

  onShow: function () {
    if (wx.getStorageSync('tcmUserChanged')) {
      wx.removeStorageSync('tcmUserChanged')
      this.loadUsers()
    }
  },

  onUnload: function () {
    wx.removeStorageSync('tcmEditScaleUser')
  },

  loadBaseData: function () {
    this.loadUsers()
    this.loadPhotoTips()
  },

  loadUsers: function () {
    var that = this
    that.setData({
      loadingUsers: true
    })

    tcm.getScaleUsers().then(function (list) {
      var scaleUsers = that.decorateScaleUsers(Array.isArray(list) ? list : [])
      var currentUser = null

      if (scaleUsers.length > 0) {
        currentUser = scaleUsers[0]
        for (var i = 0; i < scaleUsers.length; i++) {
          if (scaleUsers[i].isDefault === true || scaleUsers[i].isDefault === 1) {
            currentUser = scaleUsers[i]
            break
          }
          if (!currentUser && scaleUsers[i].active === true) {
            currentUser = scaleUsers[i]
          }
        }
      }

      that.setData({
        scaleUsers: scaleUsers,
        currentUser: currentUser,
        loadingUsers: false
      })
    }).catch(function () {
      that.setData({
        scaleUsers: [],
        currentUser: null,
        loadingUsers: false
      })
      wx.showToast({
        title: '用户列表加载失败',
        icon: 'none'
      })
    })
  },

  loadPhotoTips: function () {
    var that = this
    tcm.getPhotoTips().then(function (data) {
      if (!data) {
        return
      }
      that.setData({
        photoTipsTitle: data.title || '拍摄注意事项',
        photoTips: data.tips && data.tips.length ? data.tips : that.data.photoTips,
        loadingTips: false
      })
    }).catch(function () {
      that.setData({
        loadingTips: false
      })
    })
  },

  decorateScaleUsers: function (list) {
    var nextList = []
    for (var i = 0; i < list.length; i++) {
      nextList.push(this.decorateScaleUser(list[i]))
    }
    return nextList
  },

  decorateScaleUser: function (user) {
    if (!user) {
      return user
    }
    var detailTags = []
    if (user.country) {
      detailTags.push(this.getUserOptionLabel('country', user.country))
    }
    if (user.race) {
      detailTags.push(this.getUserOptionLabel('race', user.race))
    }
    if (user.occupation) {
      detailTags.push(this.getUserOptionLabel('occupation', user.occupation))
    }
    user.detailTags = detailTags
    return user
  },

  getUserOptionLabel: function (group, value) {
    if (!value || !USER_OPTION_LABELS[group]) {
      return ''
    }
    return USER_OPTION_LABELS[group][value] || value
  },

  openUserPopup: function () {
    this.setData({
      showUserPopup: true
    })
  },

  closeUserPopup: function () {
    this.setData({
      showUserPopup: false
    })
  },

  selectUser: function (e) {
    var user = this.decorateScaleUser(e.currentTarget.dataset.user)
    this.setData({
      currentUser: user,
      showUserPopup: false
    })
    if (user && user.ID) {
      tcm.setDefaultScaleUser(user.ID)
    }
  },

  goUserForm: function () {
    this.closeUserPopup()
    wx.navigateTo({
      url: '/packageWellness/pages/tcm/user-form/user-form'
    })
  },

  editUser: function (e) {
    var user = e.currentTarget.dataset.user
    wx.setStorageSync('tcmEditScaleUser', user)
    this.closeUserPopup()
    wx.navigateTo({
      url: '/packageWellness/pages/tcm/user-form/user-form?mode=edit'
    })
  },

  deleteUser: function (e) {
    var that = this
    var user = e.currentTarget.dataset.user
    if (!user || !user.ID) {
      return
    }

      wx.showModal({
        title: '删除成员',
        content: '确认删除“' + user.nickName + '”吗？删除后该成员的康养评估入口将不可用。',
      confirmColor: '#e35b4e',
      success: function (res) {
        if (!res.confirm) {
          return
        }
        tcm.deleteScaleUser(user.ID).then(function () {
          wx.showToast({
            title: '删除成功',
            icon: 'success'
          })
          if (that.data.currentUser && that.data.currentUser.ID === user.ID) {
            that.setData({
              currentUser: null
            })
          }
          that.loadUsers()
          that.closeUserPopup()
        }).catch(function (err) {
          wx.showToast({
            title: err && err.message ? err.message : '删除失败',
            icon: 'none'
          })
        })
      }
    })
  },

  viewRecords: function () {
    if (!this.data.currentUser || !this.data.currentUser.ID) {
      wx.showToast({
        title: '请先选择成员',
        icon: 'none'
      })
      return
    }
    wx.navigateTo({
      url: '/packageWellness/pages/tcm/report/report?scaleUserId=' + this.data.currentUser.ID
    })
  },

  chooseImageSource: function (e) {
    var kind = e.currentTarget.dataset.kind
    var that = this
    wx.showActionSheet({
      itemList: ['拍照', '从相册选择'],
      success: function (res) {
        var sourceType = res.tapIndex === 0 ? ['camera'] : ['album']
        wx.chooseImage({
          count: 1,
          sizeType: ['compressed'],
          sourceType: sourceType,
          success: function (chooseRes) {
            var tempPath = chooseRes.tempFilePaths[0]
            that.uploadImage(kind, tempPath)
          }
        })
      }
    })
  },

  uploadImage: function (kind, tempPath) {
    var that = this
    var cards = this.data.uploadCards.slice()
    var cardIndex = this.findUploadCardIndex(kind)

    if (cardIndex < 0) {
      return
    }

    cards[cardIndex].localPath = tempPath
    cards[cardIndex].uploading = true
    cards[cardIndex].url = ''

    that.setData({
      uploadCards: cards
    })

    tcm.uploadObservationImage(tempPath, kind).then(function (data) {
      var nextCards = that.data.uploadCards.slice()
      nextCards[cardIndex].uploading = false
      nextCards[cardIndex].url = data.url || data.urlOss || ''
      that.setData({
        uploadCards: nextCards
      })
      wx.showToast({
        title: '上传成功',
        icon: 'success'
      })
    }).catch(function (err) {
      var failCards = that.data.uploadCards.slice()
      failCards[cardIndex].uploading = false
      failCards[cardIndex].localPath = ''
      failCards[cardIndex].url = ''
      that.setData({
        uploadCards: failCards
      })
      wx.showToast({
        title: err && err.message ? err.message : '上传失败',
        icon: 'none',
        duration: 3000
      })
    })
  },

  findUploadCardIndex: function (kind) {
    var cards = this.data.uploadCards
    for (var i = 0; i < cards.length; i++) {
      if (cards[i].key === kind) {
        return i
      }
    }
    return -1
  },

  openExample: function (e) {
    var kind = e.currentTarget.dataset.kind
    var title = e.currentTarget.dataset.title
    this.setData({
      showExamplePopup: true,
      exampleTitle: title,
      exampleImage: EXAMPLE_IMAGES[kind] || ''
    })
  },

  closeExample: function () {
    this.setData({
      showExamplePopup: false
    })
  },

  noop: function () {},

  previewCurrentImage: function (e) {
    var src = e.currentTarget.dataset.src
    if (!src) {
      return
    }
    wx.previewImage({
      current: src,
      urls: [src]
    })
  },

  goBackStep: function () {
    if (this.data.currentStep === 1) {
      this.setData({
        currentStep: 0
      })
      return
    }
    wx.navigateBack()
  },

  goQuestionsStep: function () {
    if (!this.data.currentUser || !this.data.currentUser.ID) {
      wx.showToast({
        title: '请先选择成员',
        icon: 'none'
      })
      return
    }

    var missing = []
    for (var i = 0; i < this.data.uploadCards.length; i++) {
      if (this.data.uploadCards[i].required && !this.data.uploadCards[i].url) {
        missing.push(this.data.uploadCards[i].title)
      }
    }

    if (missing.length) {
      wx.showToast({
        title: '请先上传' + missing.join('、'),
        icon: 'none'
      })
      return
    }

    this.setData({
      currentStep: 1
    })

    if (!this.data.questionList.length) {
      this.loadQuestions()
    }
  },

  loadQuestions: function () {
    var that = this
    that.setData({
      loadingQuestions: true
    })

    tcm.getQuestions().then(function (questions) {
      var list = Array.isArray(questions) ? questions : []
      var nextList = []
      for (var i = 0; i < list.length; i++) {
        var item = list[i]
        nextList.push({
          key: item.key || '',
          title: compliance.sanitizeText(item.title || ''),
          hint: compliance.sanitizeText(item.hint || ''),
          required: item.required === true,
          multiSelect: item.multiSelect === true,
          exclusivePairs: item.exclusivePairs || [],
          showCustomInput: false,
          customText: '',
          options: (item.options || []).map(function (opt) {
            return {
              value: opt.value || '',
              label: compliance.sanitizeText(opt.label || ''),
              isCustom: opt.isCustom === true,
              placeholder: compliance.sanitizeText(opt.placeholder || ''),
              description: compliance.sanitizeText(opt.description || ''),
              isExclusive: opt.isExclusive === true,
              selected: false,
              disabled: false
            }
          })
        })
      }

      that.setData({
        questionList: nextList,
        loadingQuestions: false
      })
    }).catch(function () {
      that.setData({
        loadingQuestions: false
      })
      wx.showToast({
        title: '健康问答题目加载失败',
        icon: 'none'
      })
    })
  },

  toggleOption: function (e) {
    var qIndex = e.currentTarget.dataset.qindex
    var oIndex = e.currentTarget.dataset.oindex
    var list = this.data.questionList.slice()
    var question = JSON.parse(JSON.stringify(list[qIndex]))
    var option = question.options[oIndex]

    if (option.disabled) {
      return
    }

    if (option.isCustom) {
      question.showCustomInput = !question.showCustomInput
      option.selected = question.showCustomInput
      if (!question.showCustomInput) {
        question.customText = ''
      }
    } else if (option.isExclusive) {
      var shouldSelectExclusive = !option.selected
      for (var i = 0; i < question.options.length; i++) {
        if (!question.options[i].isCustom) {
          question.options[i].selected = false
        }
      }
      option.selected = shouldSelectExclusive
      question.showCustomInput = false
      question.customText = ''
      for (var a = 0; a < question.options.length; a++) {
        if (question.options[a].isCustom) {
          question.options[a].selected = false
        }
      }
    } else {
      for (var b = 0; b < question.options.length; b++) {
        if (question.options[b].isExclusive) {
          question.options[b].selected = false
        }
      }

      if (!question.multiSelect) {
        for (var c = 0; c < question.options.length; c++) {
          if (!question.options[c].isCustom) {
            question.options[c].selected = false
          }
        }
        option.selected = true
      } else {
        option.selected = !option.selected
      }

      if (option.selected) {
        for (var d = 0; d < question.options.length; d++) {
          if (!question.options[d].selected || question.options[d].value === option.value) {
            continue
          }
          if (this.isMutuallyExclusive(question, option.value, question.options[d].value)) {
            question.options[d].selected = false
          }
        }
      }
    }

    question = this.refreshQuestionDisabledState(question)
    list[qIndex] = question
    this.setData({
      questionList: list
    })
  },

  refreshQuestionDisabledState: function (question) {
    var selectedValues = []
    for (var i = 0; i < question.options.length; i++) {
      question.options[i].disabled = false
      if (question.options[i].selected && !question.options[i].isCustom) {
        selectedValues.push(question.options[i].value)
      }
    }

    for (var j = 0; j < selectedValues.length; j++) {
      var selectedValue = selectedValues[j]
      var selectedOption = null
      for (var m = 0; m < question.options.length; m++) {
        if (question.options[m].value === selectedValue) {
          selectedOption = question.options[m]
          break
        }
      }

      if (selectedOption && selectedOption.isExclusive) {
        for (var n = 0; n < question.options.length; n++) {
          if (!question.options[n].isCustom && question.options[n].value !== selectedValue) {
            question.options[n].disabled = true
          }
        }
      }

      for (var p = 0; p < question.options.length; p++) {
        if (question.options[p].selected || question.options[p].isCustom) {
          continue
        }
        if (this.isMutuallyExclusive(question, selectedValue, question.options[p].value)) {
          question.options[p].disabled = true
        }
      }
    }

    return question
  },

  isMutuallyExclusive: function (question, value1, value2) {
    var pairs = question.exclusivePairs || []
    for (var i = 0; i < pairs.length; i++) {
      if (pairs[i].length < 2) {
        continue
      }
      if ((pairs[i][0] === value1 && pairs[i][1] === value2) ||
        (pairs[i][0] === value2 && pairs[i][1] === value1)) {
        return true
      }
    }
    return false
  },

  updateCustomText: function (e) {
    var qIndex = e.currentTarget.dataset.qindex
    var list = this.data.questionList.slice()
    list[qIndex].customText = e.detail.value
    this.setData({
      questionList: list
    })
  },

  updateExtraNote: function (e) {
    this.setData({
      extraNote: e.detail.value
    })
  },

  getQuestionAnswerText: function (question) {
    var texts = []
    for (var i = 0; i < question.options.length; i++) {
      if (question.options[i].selected && !question.options[i].isCustom) {
        texts.push(question.options[i].label)
      }
    }
    if (question.customText) {
      texts.push(question.customText)
    }
    return texts.join('，')
  },

  submitExam: function () {
    var that = this
    if (that.data.submitting) {
      return
    }

    for (var i = 0; i < that.data.questionList.length; i++) {
      var question = that.data.questionList[i]
      var answerText = that.getQuestionAnswerText(question)
      if (question.required && !answerText) {
        wx.showToast({
          title: '请完成' + question.title,
          icon: 'none'
        })
        return
      }
    }

    wx.showModal({
      title: 'AI 健康评估知情同意',
      content: '本功能使用人工智能技术对舌象、面部与健康问答信息进行分析，结果仅供健康参考，不构成专业建议。',
      confirmText: '继续提交',
      confirmColor: '#eab86a',
      success: function (res) {
        if (res.confirm) {
          that.doSubmitExam()
        }
      }
    })
  },

  doSubmitExam: function () {
    var that = this
    var questionAnswers = {}
    var customAnswers = {}
    var observationImages = {}

    for (var i = 0; i < that.data.uploadCards.length; i++) {
      if (that.data.uploadCards[i].url) {
        observationImages[that.data.uploadCards[i].key] = [that.data.uploadCards[i].url]
      }
    }

    for (var j = 0; j < that.data.questionList.length; j++) {
      var question = that.data.questionList[j]
      var selectedValues = []
      for (var k = 0; k < question.options.length; k++) {
        if (question.options[k].selected && !question.options[k].isCustom) {
          selectedValues.push(question.options[k].value)
        }
      }
      if (selectedValues.length) {
        questionAnswers[question.key] = selectedValues
      }
      if (question.customText) {
        customAnswers[question.key] = compliance.sanitizeText(question.customText)
      }
    }

    that.setData({
      submitting: true
    })

    tcm.submitExam({
      scaleUserId: that.data.currentUser.ID,
      language: tcm.getLanguageCode(),
      questionAnswers: questionAnswers,
      customAnswers: customAnswers,
      observationImages: observationImages,
      extraNote: compliance.sanitizeText(that.data.extraNote || ''),
      additionalText: ''
    }).then(function (data) {
      wx.showToast({
        title: '提交成功',
        icon: 'success'
      })
      that.setData({
        submitting: false
      })
      setTimeout(function () {
        wx.redirectTo({
          url: '/packageWellness/pages/tcm/report/report?examId=' + data.examId
        })
      }, 400)
    }).catch(function (err) {
      that.setData({
        submitting: false
      })
      wx.showToast({
        title: err && err.message ? err.message : '提交失败，请重试',
        icon: 'none',
        duration: 3000
      })
    })
  }
})