cfc/cfc-frontend/components/address-picker.vue

<template>
  <view class="address-picker">
    <view class="picker-row" @click="showProvincePicker">
      <text class="picker-label">省份：</text>
      <text class="picker-value">{{ selectedProvince ? selectedProvince.province : '请选择' }}</text>
      <text class="picker-arrow">▶</text>
    </view>
    
    <view class="picker-row" @click="showCityPicker" v-if="selectedProvince">
      <text class="picker-label">城市：</text>
      <text class="picker-value">{{ selectedCity ? selectedCity.city : '请选择' }}</text>
      <text class="picker-arrow">▶</text>
    </view>
    
    <view class="picker-row" @click="showDistrictPicker" v-if="selectedCity">
      <text class="picker-label">区县：</text>
      <text class="picker-value">{{ selectedDistrict ? selectedDistrict.district : '请选择' }}</text>
      <text class="picker-arrow">▶</text>
    </view>
    
    <view class="picker-row" @click="showStreetPicker" v-if="selectedDistrict">
      <text class="picker-label">街道：</text>
      <text class="picker-value">{{ selectedStreet ? selectedStreet.street : '请选择' }}</text>
      <text class="picker-arrow">▶</text>
    </view>
    
    <view class="address-display" v-if="fullAddress">
      <text class="address-label">完整地址：</text>
      <text class="address-text">{{ fullAddress }}</text>
    </view>
  </view>
</template>

<script>
export default {
  name: 'AddressPicker',
  props: {
    value: {
      type: Number,
      default: null
    }
  },
  data() {
    return {
      provinces: [],
      cities: [],
      districts: [],
      streets: [],
      selectedProvince: null,
      selectedCity: null,
      selectedDistrict: null,
      selectedStreet: null
    }
  },
  computed: {
    fullAddress() {
      if (this.selectedStreet) {
        return this.selectedStreet.fullName
      }
      return ''
    }
  },
  watch: {
    value: {
      immediate: true,
      handler(newVal) {
        if (newVal) {
          this.loadAddressById(newVal)
        }
      }
    }
  },
  mounted() {
    this.loadProvinces()
  },
  methods: {
    async loadProvinces() {
      try {
        const res = await this.$http.get('/api/streets/provinces')
        this.provinces = res.data || []
      } catch (e) {
        console.error('加载省份失败', e)
      }
    },
    
    async loadCities(provinceId) {
      try {
        const res = await this.$http.get(`/api/streets/children/${provinceId}`)
        this.cities = res.data || []
      } catch (e) {
        console.error('加载城市失败', e)
      }
    },
    
    async loadDistricts(cityId) {
      try {
        const res = await this.$http.get(`/api/streets/children/${cityId}`)
        this.districts = res.data || []
      } catch (e) {
        console.error('加载区县失败', e)
      }
    },
    
    async loadStreets(districtId) {
      try {
        const res = await this.$http.get(`/api/streets/children/${districtId}`)
        this.streets = res.data || []
      } catch (e) {
        console.error('加载街道失败', e)
      }
    },
    
    async loadAddressById(streetId) {
      try {
        const res = await this.$http.get(`/api/streets/${streetId}/path`)
        const path = res.data || []
        
        if (path.length >= 1) this.selectedProvince = path[0]
        if (path.length >= 2) this.selectedCity = path[1]
        if (path.length >= 3) this.selectedDistrict = path[2]
        if (path.length >= 4) this.selectedStreet = path[3]
        
        // 加载下级选项
        if (this.selectedProvince) await this.loadCities(this.selectedProvince.id)
        if (this.selectedCity) await this.loadDistricts(this.selectedCity.id)
        if (this.selectedDistrict) await this.loadStreets(this.selectedDistrict.id)
      } catch (e) {
        console.error('加载地址路径失败', e)
      }
    },
    
    showProvincePicker() {
      uni.showActionSheet({
        itemList: this.provinces.map(p => p.province),
        success: async (res) => {
          this.selectedProvince = this.provinces[res.tapIndex]
          this.selectedCity = null
          this.selectedDistrict = null
          this.selectedStreet = null
          this.cities = []
          this.districts = []
          this.streets = []
          
          await this.loadCities(this.selectedProvince.id)
          this.emitChange()
        }
      })
    },
    
    showCityPicker() {
      if (this.cities.length === 0) {
        uni.showToast({ title: '请先选择省份', icon: 'none' })
        return
      }
      
      uni.showActionSheet({
        itemList: this.cities.map(c => c.city),
        success: async (res) => {
          this.selectedCity = this.cities[res.tapIndex]
          this.selectedDistrict = null
          this.selectedStreet = null
          this.districts = []
          this.streets = []
          
          await this.loadDistricts(this.selectedCity.id)
          this.emitChange()
        }
      })
    },
    
    showDistrictPicker() {
      if (this.districts.length === 0) {
        uni.showToast({ title: '请先选择城市', icon: 'none' })
        return
      }
      
      uni.showActionSheet({
        itemList: this.districts.map(d => d.district),
        success: async (res) => {
          this.selectedDistrict = this.districts[res.tapIndex]
          this.selectedStreet = null
          this.streets = []
          
          await this.loadStreets(this.selectedDistrict.id)
          this.emitChange()
        }
      })
    },
    
    showStreetPicker() {
      if (this.streets.length === 0) {
        uni.showToast({ title: '请先选择区县', icon: 'none' })
        return
      }
      
      uni.showActionSheet({
        itemList: this.streets.map(s => s.street),
        success: (res) => {
          this.selectedStreet = this.streets[res.tapIndex]
          this.emitChange()
        }
      })
    },
    
    emitChange() {
      const streetId = this.selectedStreet ? this.selectedStreet.id : null
      const addressData = {
        streetId: streetId,
        province: this.selectedProvince ? this.selectedProvince.province : null,
        city: this.selectedCity ? this.selectedCity.city : null,
        district: this.selectedDistrict ? this.selectedDistrict.district : null,
        street: this.selectedStreet ? this.selectedStreet.street : null,
        fullName: this.fullAddress
      }
      
      this.$emit('input', streetId)
      this.$emit('change', addressData)
    },
    
    reset() {
      this.selectedProvince = null
      this.selectedCity = null
      this.selectedDistrict = null
      this.selectedStreet = null
      this.cities = []
      this.districts = []
      this.streets = []
      this.emitChange()
    }
  }
}
</script>

<style scoped>
.address-picker {
  background: #fff;
  padding: 20rpx;
}

.picker-row {
  display: flex;
  align-items: center;
  padding: 20rpx 0;
  border-bottom: 1px solid #eee;
}

.picker-label {
  font-size: 28rpx;
  color: #666;
  width: 140rpx;
}

.picker-value {
  flex: 1;
  font-size: 28rpx;
  color: #333;
}

.picker-arrow {
  font-size: 24rpx;
  color: #999;
  margin-left: 10rpx;
}

.address-display {
  margin-top: 20rpx;
  padding: 20rpx;
  background: #f5f5f5;
  border-radius: 8rpx;
}

.address-label {
  font-size: 24rpx;
  color: #999;
  display: block;
  margin-bottom: 10rpx;
}

.address-text {
  font-size: 28rpx;
  color: #333;
}
</style>