// order.js
const mockData = require('../../utils/mockData.js')

Page({
  data: {
    currentTab: 0,
    hospitalKeyword: '',
    medicineKeyword: '',
    hospitals: mockData.hospitals,
    filteredHospitals: mockData.hospitals,
    priceResults: [],
    hotMedicines: [
      { name: '阿莫西林胶囊', minPrice: 24.8 },
      { name: '布洛芬缓释胶囊', minPrice: 17.5 },
      { name: '氯雷他定片', minPrice: 30.5 },
      { name: '奥美拉唑肠溶胶囊', minPrice: 45.0 }
    ],
    showCaseModal: false,
    showMedicineModal: false,
    showPriceConfirmModal: false,
    selectedHospital: null,
    selectedCase: null,
    selectedMedicines: [],
    selectedPriceItem: null,
    totalPrice: 0,
    deliveryAddress: ''
  },

  onLoad() {
    console.log('下单页面加载完成')
  },

  // 切换选项卡
  switchTab(e) {
    const tab = parseInt(e.currentTarget.dataset.tab)
    this.setData({
      currentTab: tab
    })
  },

  // 医院搜索
  onHospitalSearch(e) {
    const keyword = e.detail.value
    const filteredHospitals = this.data.hospitals.filter(hospital => 
      hospital.name.includes(keyword) || hospital.address.includes(keyword)
    )
    this.setData({
      hospitalKeyword: keyword,
      filteredHospitals: filteredHospitals
    })
  },

  // 药品搜索
  onMedicineSearch(e) {
    const keyword = e.detail.value
    this.setData({
      medicineKeyword: keyword
    })

    if (keyword && mockData.medicinePrices[keyword]) {
      this.setData({
        priceResults: mockData.medicinePrices[keyword]
      })
    } else {
      this.setData({
        priceResults: []
      })
    }
  },

  // 选择医院
  selectHospital(e) {
    const hospital = e.currentTarget.dataset.hospital
    this.setData({
      selectedHospital: hospital,
      showCaseModal: true
    })
  },

  // 关闭病例单模态框
  closeCaseModal() {
    this.setData({
      showCaseModal: false,
      selectedHospital: null
    })
  },

  // 选择病例单
  selectCase(e) {
    const selectedCase = e.currentTarget.dataset.case
    // 初始化药品数量
    const medicines = selectedCase.medicines.map(medicine => ({
      ...medicine,
      quantity: 0
    }))
    
    this.setData({
      selectedCase: { ...selectedCase, medicines },
      showCaseModal: false,
      showMedicineModal: true
    })
  },

  // 关闭药品模态框
  closeMedicineModal() {
    this.setData({
      showMedicineModal: false,
      selectedCase: null,
      selectedMedicines: [],
      totalPrice: 0,
      deliveryAddress: ''
    })
  },

  // 增加药品数量
  increaseQuantity(e) {
    const medicine = e.currentTarget.dataset.medicine
    const medicines = this.data.selectedCase.medicines.map(item => {
      if (item.id === medicine.id) {
        const quantity = (item.quantity || 0) + 1
        return { ...item, quantity }
      }
      return item
    })

    const totalPrice = medicines.reduce((total, item) => total + (item.price * (item.quantity || 0)), 0)
    
    this.setData({
      'selectedCase.medicines': medicines,
      totalPrice: totalPrice
    })
  },

  // 减少药品数量
  decreaseQuantity(e) {
    const medicine = e.currentTarget.dataset.medicine
    const medicines = this.data.selectedCase.medicines.map(item => {
      if (item.id === medicine.id && (item.quantity || 0) > 0) {
        const quantity = item.quantity - 1
        return { ...item, quantity }
      }
      return item
    })

    const totalPrice = medicines.reduce((total, item) => total + (item.price * (item.quantity || 0)), 0)
    
    this.setData({
      'selectedCase.medicines': medicines,
      totalPrice: totalPrice
    })
  },

  // 地址输入处理
  onAddressInput(e) {
    this.setData({
      deliveryAddress: e.detail.value
    })
  },

  // 使用默认地址
  useDefaultAddress() {
    const app = getApp()
    const userInfo = app.globalData.userInfo || mockData.userInfo
    
    if (userInfo && userInfo.defaultAddress) {
      this.setData({
        deliveryAddress: userInfo.defaultAddress
      })
      wx.showToast({
        title: '已使用默认地址',
        icon: 'success'
      })
    } else {
      wx.showToast({
        title: '暂无默认地址',
        icon: 'none'
      })
    }
  },

  // 确认下单
  confirmOrder() {
    const selectedMedicines = this.data.selectedCase.medicines
      .filter(item => item.quantity > 0)
      .map(item => ({
        name: item.name,
        price: item.price,
        quantity: item.quantity
      }))

    if (selectedMedicines.length === 0) {
      wx.showToast({
        title: '请选择至少一种药品',
        icon: 'none'
      })
      return
    }

    // 验证送货地址
    if (!this.data.deliveryAddress || this.data.deliveryAddress.trim() === '') {
      wx.showToast({
        title: '请输入送货地址',
        icon: 'none'
      })
      return
    }

    // 根据医院生成地图轨迹数据
    const hospitalLocation = this.getHospitalLocation(this.data.selectedHospital.name)
    const mapTracking = this.generateMapTracking(hospitalLocation)

    // 创建订单数据
    const order = {
      id: Date.now(),
      hospital: this.data.selectedHospital.name,
      medicines: selectedMedicines.map(m => m.name),
      totalPrice: this.data.totalPrice,
      status: '配送中',
      date: new Date().toISOString().split('T')[0],
      deliveryAddress: this.data.deliveryAddress,
      droneTracking: {
        status: '配送中',
        steps: ['订单确认', '药品准备', '无人机起飞', '配送中', '待送达']
      },
      mapTracking: mapTracking
    }

    // 保存订单到全局变量和本地存储
    const app = getApp()
    app.addOrder(order)

    // 模拟下单成功
    wx.showModal({
      title: '下单成功',
      content: `订单总价：¥${this.data.totalPrice}\n送货地址：${this.data.deliveryAddress}\n药品将尽快通过无人机配送`,
      showCancel: false,
      success: () => {
        this.closeMedicineModal()
        // 跳转到我的页面查看订单
        setTimeout(() => {
          wx.switchTab({
            url: '/pages/profile/profile'
          })
        }, 500)
      }
    })
  },

  // 获取医院位置
  getHospitalLocation(hospitalName) {
    const locations = {
      '北京协和医院': { latitude: 39.9139, longitude: 116.3917 },
      '上海瑞金医院': { latitude: 31.2304, longitude: 121.4737 },
      '广州中山医院': { latitude: 23.1291, longitude: 113.2644 }
    }
    return locations[hospitalName] || { latitude: 39.9042, longitude: 116.4074 }
  },

  // 生成地图轨迹数据
  generateMapTracking(hospitalLocation) {
    const points = []
    const numPoints = 5
    
    for (let i = 0; i < numPoints; i++) {
      const latOffset = (i * 0.004) / numPoints
      const lngOffset = (i * 0.007) / numPoints
      points.push({
        latitude: hospitalLocation.latitude + latOffset,
        longitude: hospitalLocation.longitude + lngOffset
      })
    }

    return {
      polyline: [
        {
          points: points,
          color: '#007AFF',
          width: 4,
          dottedLine: false
        }
      ],
      markers: [
        {
          id: 1,
          latitude: hospitalLocation.latitude,
          longitude: hospitalLocation.longitude,
          iconPath: '/images/hospital-marker.png',
          width: 30,
          height: 30,
          title: '医院位置'
        },
        {
          id: 2,
          latitude: points[points.length - 1].latitude,
          longitude: points[points.length - 1].longitude,
          iconPath: '/images/drone-marker.png',
          width: 30,
          height: 30,
          title: '无人机位置'
        }
      ]
    }
  },

  // 选择热门药品
  selectHotMedicine(e) {
    const medicineName = e.currentTarget.dataset.medicine
    this.setData({
      medicineKeyword: medicineName
    })
    
    if (mockData.medicinePrices[medicineName]) {
      this.setData({
        priceResults: mockData.medicinePrices[medicineName]
      })
    }
  },

  // 通过价格选择医院
  selectByPrice(e) {
    const priceInfo = e.currentTarget.dataset.price
    const medicineName = this.data.medicineKeyword
    
    // 显示确认模态框
    this.setData({
      showPriceConfirmModal: true,
      selectedPriceItem: {
        medicine: medicineName,
        hospital: priceInfo.hospital,
        price: priceInfo.price
      },
      deliveryAddress: ''
    })
  },

  // 关闭比价确认模态框
  closePriceConfirmModal() {
    this.setData({
      showPriceConfirmModal: false,
      selectedPriceItem: null,
      deliveryAddress: ''
    })
  },

  // 确认比价下单
  confirmPriceOrder() {
    // 验证送货地址
    if (!this.data.deliveryAddress || this.data.deliveryAddress.trim() === '') {
      wx.showToast({
        title: '请输入送货地址',
        icon: 'none'
      })
      return
    }

    const selectedPriceItem = this.data.selectedPriceItem
    
    // 根据医院生成地图轨迹数据
    const hospitalLocation = this.getHospitalLocation(selectedPriceItem.hospital)
    const mapTracking = this.generateMapTracking(hospitalLocation)

    // 创建订单数据
    const order = {
      id: Date.now(),
      hospital: selectedPriceItem.hospital,
      medicines: [selectedPriceItem.medicine],
      totalPrice: selectedPriceItem.price,
      status: '配送中',
      date: new Date().toISOString().split('T')[0],
      deliveryAddress: this.data.deliveryAddress,
      droneTracking: {
        status: '配送中',
        steps: ['订单确认', '药品准备', '无人机起飞', '配送中', '待送达']
      },
      mapTracking: mapTracking
    }

    // 保存订单到全局变量和本地存储
    const app = getApp()
    app.addOrder(order)

    // 保存地址用于显示
    const savedAddress = this.data.deliveryAddress

    // 关闭模态框
    this.setData({
      showPriceConfirmModal: false,
      selectedPriceItem: null,
      deliveryAddress: ''
    })

    wx.showModal({
      title: '下单成功',
      content: `订单总价：¥${selectedPriceItem.price}\n送货地址：${savedAddress}\n药品将尽快通过无人机配送`,
      showCancel: false,
      success: () => {
        // 跳转到我的页面查看订单
        setTimeout(() => {
          wx.switchTab({
            url: '/pages/profile/profile'
          })
        }, 500)
      }
    })
  }
})