<template>
  <div class="apply-after-container">
    <div class="page-header">
      <div class="page-inner header-inner">
        <div class="header-left">
          <div class="header-icon">
            <el-icon><Clock /></el-icon>
          </div>
          <div class="header-title">申请售后</div>
        </div>

        <div class="header-center">
          <div class="header-item">
            <span class="label">订单编号</span>
            <span class="value">{{ orderInfo.orderNo }}</span>
          </div>
          <div class="header-item">
            <span class="label">下单时间</span>
            <span class="value">{{ orderInfo.orderTime }}</span>
          </div>
        </div>

        <!-- <div class="header-right">
          <el-button @click="handleViewEvaluation">查看评价</el-button>
          <el-button @click="handleBuyAgain">再次购买</el-button>
        </div> -->
      </div>
    </div>

    <div class="content">
      <div class="page-inner">
        <div class="panel">
          <div class="panel-title">选择服务类型：</div>
          <div class="service-type">
            <el-radio-group v-model="form.serviceType" size="large">
              <el-radio-button label="1">退换货</el-radio-button>
              <el-radio-button label="3">维修</el-radio-button>
            </el-radio-group>
            <div class="service-tip">如商品出现质量问题，退货价格按照销售价格退货！</div>
          </div>

          <div class="section-title">提交数量</div>

          <div class="summary-bar" v-if="topBtnFlag">
            <div class="summary-left">
              <span>商品总数：{{ summary.totalKinds }}个</span>
              <span>本单提交商品总数量：{{ summary.totalQty }}个</span>
              <span>退货总金额：¥ {{ summary.totalAmount }}</span>
            </div>
            <el-icon class="summary-close" @click="topBtnFlag = false"><Close /></el-icon>
          </div>

          <div class="product-table">
            <div class="table-header">
              <div class="col col-product">商品信息</div>
              <div class="col col-price">单价</div>
              <div class="col col-sold">销售数量</div>
              <div class="col col-available">未售后数量</div>
              <div class="col col-qty">退货数量</div>
              <div class="col col-amount">退货金额</div>
              <!-- <div class="col col-op">操作</div> -->
            </div>

            <div v-if="selectedProducts.length === 0" class="table-empty">
              <el-empty description="暂无商品" />
            </div>

            <div v-for="item in selectedProducts" :key="item.productId" class="table-row">
              <div class="col col-product">
                <div class="product-info">
                  <div class="product-image">
                    <el-image :src="item.productImage" fit="cover">
                      <template #error>
                        <div class="image-placeholder"></div>
                      </template>
                    </el-image>
                  </div>
                  <div class="product-meta">
                    <div class="name">{{ item.name }}</div>
                    <div class="spec">{{ item.spec }}</div>
                  </div>
                </div>
              </div>
              <div class="col col-price">¥{{ formatMoney(item.unitPrice) }}</div>
              <div class="col col-sold">{{ item.soldQty }}</div>
              <div class="col col-available">{{ item.availableQty }}</div>
              <div class="col col-qty">
                <el-input-number
                  v-model="item.returnQuantity"
                  :min="item.soldQty"
                  :max="item.availableQty"
                  controls-position="right"
                  :controls="false"
                  disabled
                  @change="handleQtyChange"
                />
              </div>
              <div class="col col-amount">¥{{ formatMoney(item.returnQuantity * item.unitPrice) }}</div>
              <!-- <div class="col col-op">
                <el-button type="danger" link @click="handleRemoveProduct(item.productId)">删除</el-button>
              </div> -->
            </div>
          </div>
        </div>

        <div class="panel">
          <div class="panel-title">售后服务单信息：</div>
          <el-form ref="formRef" :model="form" :rules="rules" label-width="80px" class="after-form">
            <el-form-item label="退货原因" prop="returnReasonId">
              <el-select v-model="form.returnReasonId" placeholder="请选择" style="width: 200px" @change="handleReturnReasonChange">
                <el-option v-for="r in reasonOptions" :key="r.id" :label="r.returnReasonName" :value="r.id" />
              </el-select>
            </el-form-item>
            <el-form-item label="问题描述" prop="problemDescription">
              <el-input v-model="form.problemDescription" type="textarea" :rows="5" placeholder="请输入问题描述" />
            </el-form-item>
            <el-form-item label="凭证图片">
              <el-upload v-model:file-list="form.voucherPhotoArray" list-type="picture-card" :action="action" :auto-upload="false" :limit="5">
                <el-icon><Plus /></el-icon>
              </el-upload>
            </el-form-item>
          </el-form>
        </div>

        <div class="panel">
          <div class="panel-title">选择取件方式：</div>
          <el-radio-group v-model="form.returnMethod" class="pickup-type">
            <el-radio label="1">上门取件</el-radio>
            <el-radio label="2">快递配送</el-radio>
          </el-radio-group>

          <div class="pickup-info" v-if="form.returnMethod === '1'">
            <div class="pickup-row">
              <span class="k">顾客姓名：</span><span class="v">{{ form.chargebackName }}</span>
            </div>
            <div class="pickup-row">
              <span class="k">手机号：</span><span class="v">{{ form.chargebackPhone }}</span>
            </div>
            <div class="pickup-row">
              <span class="k">取件时间：</span>
              <el-date-picker v-model="form.chargebackPickupTime" type="datetime" placeholder="请选择" style="width: 240px" />
            </div>
            <div class="pickup-row">
              <span class="k">取件地址：</span><span class="v">{{ form.chargebackAddress }}</span>
            </div>
            <div class="pickup-row hint">提交服务单后，售后专员可能与您电话沟通，请保持手机畅通</div>
            <div class="pickup-row">
              <el-button plain @click="handleChangeAddress">切换地址</el-button>
            </div>
          </div>

          <div class="pickup-info" v-if="form.returnMethod === '2'">
            <div class="pickup-row"><span class="k">邮寄地址：</span><span class="v"></span></div>
            <div class="pickup-row">
              <span class="k">取件地址：</span><span class="v">{{ form.chargebackAddress }}</span>
            </div>
            <div class="pickup-row">
              <span class="k">收件人：</span><span class="v">{{ form.chargebackName }} {{ form.chargebackPhone }}</span>
            </div>
            <div class="pickup-info">
              <div class="pickup-row hint">提交服务单后，售后专员可能与您电话沟通，请保持手机畅通</div>
            </div>
          </div>
        </div>

        <div class="footer">
          <el-button type="danger" class="submit-btn" @click="handleSubmit">提交</el-button>
        </div>
      </div>
    </div>

    <el-dialog v-model="addressDialogVisible" title="切换地址" width="900px" class="address-dialog">
      <div v-loading="addressLoading" class="address-list">
        <div
          v-for="addr in addressList"
          :key="addr.id"
          :class="['address-item', { active: selectedAddressId === String(addr.id) }]"
          @click="handleSelectAddress(addr)"
        >
          <div class="address-left">
            <div class="line">收货人: {{ addr.consignee || addr.receiverName || addr.name || '-' }}</div>
            <div class="line">联系方式: {{ addr.phone || addr.mobile || '-' }}</div>
            <div class="line">收货地址: {{ formatAddress(addr) }}</div>
          </div>
          <div class="address-right">
            <span v-if="isDefaultAddress(addr)" class="default-tag">默认地址</span>
          </div>
        </div>
      </div>

      <template #footer>
        <div class="dialog-footer">
          <el-button type="primary" @click="handleConfirmAddress">确认</el-button>
          <el-button @click="addressDialogVisible = false">取消</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>

<script setup lang="ts">
import { computed, reactive, ref } from 'vue';
import { ElMessage } from 'element-plus';
import { Clock, Close, Plus } from '@element-plus/icons-vue';

import { useRouter, useRoute } from 'vue-router';
import { getOrderInfo, getOrderProductsWithAvailableQty, getReturnReason } from '@/api/pc/enterprise/order';
import { getEnterpriseInfo, getAddressList } from '@/api/pc/enterprise';
import { getOrderReturnInfo, addOrderReturn } from '@/api/pc/enterprise/orderReturn';
import type { OrderReturn } from '@/api/pc/enterprise/orderReturnTypes';
const action = import.meta.env.VITE_APP_BASE_API + '/resource/oss/upload';
import type { UploadProps } from 'element-plus';
const topBtnFlag = ref(false);
const router = useRouter();
const route = useRoute();
const loading = ref(false);
const orderId = ref<any>(0);

const addressDialogVisible = ref(false);
const addressLoading = ref(false);
const addressList = ref<any[]>([]);
const selectedAddressId = ref<string>('');
const selectedAddress = ref<any>(null);

const orderInfo = reactive({
  orderId: 0,
  orderNo: '',
  orderTime: '',
  freight: '0.00',
  totalAmount: '0.00',
  address: '',
  receiverName: '',
  receiverPhone: '',
  deliveryTime: '',
  purchaseReason: '',
  costType: '',
  remark: ''
});

type ApplyProduct = {
  productId: number;
  productNo: string;
  productUnit: string;
  productImage: string;
  productName: string;
  orderProductId: number;
  name: string;
  spec: string;
  unitPrice: number;
  soldQty: number;
  totalAmount: number;
  reasonDetail: string;
  availableQty: number;
  returnQuantity: number;
};

const selectedProducts = ref<ApplyProduct[]>([]);

const formRef = ref();

const form = reactive({
  orderId: 0,
  orderNo: '',
  customerNo: '',
  orderAmount: 0,
  returnAmount: '',
  serviceType: '1',
  returnReasonId: '',
  returnReason: '',
  problemDescription: '',
  returnProductNum: 0,
  afterSaleAmount: '',
  voucherPhotoArray: [],
  voucherPhoto: '',
  returnMethod: '1',
  chargebackPickupTime: '' as any,
  chargebackName: '',
  chargebackPhone: '',
  chargebackAddress: '',
  orderReturnItemList: []
});

const rules = {
  returnReasonId: [{ required: true, message: '请选择退货原因', trigger: 'change' }],
  problemDescription: [{ required: true, message: '请输入问题描述', trigger: 'blur' }]
};

const reasonOptions = ref([]);

const summary = computed(() => {
  const list = selectedProducts.value;
  const totalKinds = list.length;
  const totalQty = list.reduce((sum, p) => sum + (Number(p.returnQuantity) || 0), 0);
  const totalAmountNum = list.reduce((sum, p) => sum + (Number(p.returnQuantity) || 0) * (Number(p.unitPrice) || 0), 0);
  return {
    totalKinds,
    totalQty,
    totalAmount: formatMoney(totalAmountNum)
  };
});

const formatMoney = (val: number | string) => {
  const num = Number(val) || 0;
  return num.toFixed(2);
};

const handleQtyChange = () => {
  // computed 会自动更新
};

const handleRemoveProduct = (id: number) => {
  selectedProducts.value = selectedProducts.value.filter((p) => p.productId != id);
};

const isDefaultAddress = (addr: any) => {
  const v = addr?.isDefault ?? addr?.defaultFlag;
  return v === 0 || v === '0' || v === 1 || v === '1' || v === true;
};

const formatAddress = (addr: any) => {
  const parts = [addr?.provincialCityCountry].filter(Boolean);
  const detail = addr?.detailAddress || addr?.address || addr?.fullAddress || '';
  const prefix = parts.join('');
  return `${prefix}${detail ? (prefix ? ' ' : '') + detail : ''}`.trim() || '-';
};

const loadAddressList = async () => {
  try {
    addressLoading.value = true;
    const res = await getAddressList();
    if (res.code === 200) {
      const rows = res.rows || res.data || [];
      addressList.value = Array.isArray(rows) ? rows : [];

      const defaultAddr = addressList.value.find((a) => isDefaultAddress(a));
      const initAddr = selectedAddress.value || defaultAddr || addressList.value[0];
      if (initAddr) {
        selectedAddress.value = initAddr;
        selectedAddressId.value = String(initAddr.id);
      }
    }
  } catch (error) {
    console.error('加载地址列表失败:', error);
    ElMessage.error('加载地址列表失败');
  } finally {
    addressLoading.value = false;
  }
};

const handleSelectAddress = (addr: any) => {
  selectedAddress.value = addr;
  selectedAddressId.value = String(addr.id);
};

const handleConfirmAddress = () => {
  if (!selectedAddress.value) {
    ElMessage.warning('请选择地址');
    return;
  }

  const addr = selectedAddress.value;
  form.chargebackName = addr.consignee || addr.receiverName || addr.name || form.chargebackName;
  form.chargebackPhone = addr.phone || addr.mobile || form.chargebackPhone;
  form.chargebackAddress = formatAddress(addr);
  addressDialogVisible.value = false;
};

// 加载退货原因列表
const loadReturnReason = async () => {
  try {
    const res = await getReturnReason();
    if (res.code === 200) {
      reasonOptions.value = res.rows || [];
    }
  } catch (error) {
    console.error('加载退货原因列表失败:', error);
  }
};

// 加载企业信息
const loadEnterpriseInfo = async () => {
  try {
    const res = await getEnterpriseInfo();
    if (res.code === 200 && res.data) {
      const data = res.data;
      const salesInfo = data.customerSalesInfoVo || {};
      const businessInfo = data.customerBusinessInfoVo || {};

      // 辅助函数：处理空值，空字符串也转为 '-'
      const formatValue = (value: any) => (value && value !== '' ? value : '-');

      form.chargebackName = formatValue(data.customerName);

      form.chargebackPhone = formatValue(data.landline);
      form.chargebackAddress = formatValue(data.provincialCityCounty) + ' ' + formatValue(data.address);
    }
  } catch (error) {
    console.error('加载企业信息失败:', error);
    ElMessage.error('加载企业信息失败');
  }
};

const handleChangeAddress = () => {
  addressDialogVisible.value = true;
};

const handleViewEvaluation = () => {
  ElMessage.info('查看评价');
};

const handleBuyAgain = () => {
  ElMessage.info('再次购买');
};

// 加载订单详情
const loadOrderDetail = async () => {
  try {
    loading.value = true;
    const res = await getOrderInfo(orderId.value);
    if (res.code === 200 && res.data) {
      const order = res.data;
      // 映射订单信息
      orderInfo.orderId = order.id;
      orderInfo.orderNo = order.orderNo;
      form.orderId = order.id;
      form.orderNo = order.orderNo;
      form.orderAmount = order.payableAmount || '0.00';
      orderInfo.orderTime = order.orderTime;
      orderInfo.freight = order.shippingFee || '0.00';
      orderInfo.totalAmount = order.payableAmount || '0.00';
      orderInfo.deliveryTime = order.expectedDeliveryTime || '';
      orderInfo.purchaseReason = order.purchaseReason || '';
      orderInfo.remark = order.remark || '';
      form.customerNo = order.customerCode;

      // 获取商品信息
      const productsRes = await getOrderProductsWithAvailableQty([orderId.value]);
      if (productsRes.code === 200 && productsRes.rows) {
        selectedProducts.value = productsRes.rows.map((p: any) => {
          const soldQty = Number(p.orderQuantity) || 0;
          const afterSaleQty = Number(p.afterSaleQuantity) || 0;
          // const availableQty = Math.max(soldQty - afterSaleQty, 0);
          const availableQty = Math.max(p.availableQty, 0);
          const unitPrice = Number(p.orderPrice) || 0;

          return {
            productId: p.productId,
            productNo: p.productNo,
            productUnit: p.productUnit || '',
            productImage: p.productImage || '',
            name: p.productName || '',
            spec: `${p.productUnit || ''} ${p.productNo || ''}`.trim(),
            unitPrice,
            soldQty,
            availableQty,
            returnQuantity: availableQty > 0 ? 1 : 0,
            orderProductId: p.id,
            productName: p.productName,
            reasonDetail: form.returnReason
          } as ApplyProduct;
        });
      }
    }
  } catch (error) {
    console.error('加载订单详情失败:', error);
    ElMessage.error('加载订单详情失败');
  } finally {
    loading.value = false;
  }
};

const handleReturnReasonChange = (value: string) => {
  const reason = reasonOptions.value.find((r) => r.id === value);
  if (reason) {
    form.returnReason = reason.returnReasonName;
  }
};

onMounted(() => {
  const paramId = route.query.orderId;

  // 直接使用字符串，不转换为数字，避免精度丢失
  orderId.value = paramId as string;
  if (orderId.value) {
    loadOrderDetail();
  } else {
    console.error('订单ID无效，无法加载订单详情');
  }
  loadReturnReason();
  loadEnterpriseInfo();
  loadAddressList();
});

const handleSubmit = async () => {
  if (selectedProducts.value.length === 0) {
    ElMessage.warning('请至少选择一个商品');
    return;
  }

  const hasQty = selectedProducts.value.some((p) => Number(p.returnQuantity) > 0);
  if (!hasQty) {
    ElMessage.warning('请填写退货数量');
    return;
  }

  const valid = await formRef.value?.validate();
  if (!valid) return;

  form.returnProductNum = summary.value.totalQty;
  form.afterSaleAmount = summary.value.totalAmount;
  form.returnAmount = summary.value.totalAmount;
  form.voucherPhoto = form.voucherPhotoArray.join(',');
  form.orderReturnItemList = selectedProducts.value;
  const res = await addOrderReturn(form as any);
  if (res.code == 200) {
    ElMessage.success('申请成功');
    router.push('/order/afterSale');
  } else {
    ElMessage.error('申请失败');
  }
};
</script>

<style scoped lang="scss">
.apply-after-container {
  padding: 20px;
  background: #fff;
  min-height: 100%;
  width: 100%;
}

.page-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.page-header {
  height: 72px;
  background: #fff;
  border-bottom: 1px solid #eee;

  .header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 20px;
  }

  .header-left {
    display: flex;
    align-items: center;
    gap: 10px;

    .header-icon {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      border: 2px solid #e60012;
      color: #e60012;
    }

    .header-title {
      color: #e60012;
      font-size: 16px;
      font-weight: 600;
    }
  }

  .header-center {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 50px;
    color: #666;
    font-size: 13px;

    .header-item {
      .label {
        color: #999;
        margin-right: 10px;
      }
      .value {
        color: #333;
      }
    }
  }

  .header-right {
    display: flex;
    gap: 10px;
  }
}

.content {
  padding: 16px 20px 30px;
}

.panel {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 4px;
  padding: 16px 18px;
  margin-bottom: 16px;
}

.panel-title {
  font-size: 14px;
  font-weight: 600;
  color: #333;
  margin-bottom: 12px;
}

.service-type {
  .service-tip {
    margin-top: 8px;
    font-size: 12px;
    color: #999;
  }
}

.section-title {
  margin-top: 16px;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 600;
  color: #333;
}

.summary-bar {
  background: #eef8ee;
  border: 1px solid #d8f0d8;
  color: #18a058;
  border-radius: 2px;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;

  .summary-left {
    display: flex;
    gap: 18px;
    font-size: 13px;
  }
  .summary-close {
    cursor: pointer;
    color: #18a058;
  }
}

.product-table {
  border: 1px solid #eee;

  .table-header {
    display: flex;
    background: #fafafa;
    border-bottom: 1px solid #eee;
    font-size: 12px;
    color: #666;
    font-weight: 600;
  }

  .table-row {
    display: flex;
    border-bottom: 1px solid #f0f0f0;
    &:last-child {
      border-bottom: none;
    }
  }

  .col {
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid #f0f0f0;
    min-height: 88px;

    &:last-child {
      border-right: none;
    }
  }

  .col-product {
    flex: 1;
    justify-content: flex-start;
  }
  .col-price,
  .col-sold,
  .col-available,
  .col-qty,
  .col-amount {
    width: 110px;
  }
  .col-op {
    width: 80px;
  }

  .table-empty {
    padding: 20px 0;
  }

  .product-info {
    display: flex;
    gap: 12px;
    align-items: center;
    width: 100%;
  }
  .product-image {
    width: 60px;
    height: 60px;
    background: #f5f5f5;
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
    .el-image {
      width: 100%;
      height: 100%;
    }
    .image-placeholder {
      width: 100%;
      height: 100%;
      background: #f5f5f5;
    }
  }
  .product-meta {
    .name {
      font-size: 13px;
      color: #333;
      line-height: 1.4;
    }
    .spec {
      margin-top: 4px;
      font-size: 12px;
      color: #999;
    }
  }
}

.after-form {
  :deep(.el-form-item__label) {
    color: #333;
  }
}

.pickup-type {
  margin-bottom: 12px;
}

.pickup-info {
  font-size: 13px;
  color: #666;

  .pickup-row {
    margin-bottom: 10px;
    .k {
      color: #999;
      margin-right: 6px;
    }
    &.hint {
      color: #999;
    }
  }
}

.footer {
  display: flex;
  justify-content: center;
  padding: 10px 0 20px;
  .submit-btn {
    width: 120px;
  }
}

.address-dialog {
  .address-list {
    max-height: 520px;
    overflow: auto;
  }

  .address-item {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 14px 16px;
    border: 1px solid #e5e5e5;
    margin-bottom: 12px;
    cursor: pointer;

    &:hover {
      border-color: #d9d9d9;
    }

    &.active {
      border-color: #e60012;
    }

    .address-left {
      .line {
        font-size: 13px;
        color: #333;
        line-height: 1.8;
      }
    }

    .address-right {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      min-width: 80px;
    }

    .default-tag {
      color: #e60012;
      font-size: 12px;
    }
  }

  .dialog-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
  }
}
</style>
