<template>
  <div class="app-container">
    <el-row :gutter="20">
      <el-col :span="5" style="border-right: 1px solid #e4e7ed;">
        <div style="font-weight: 900;">客户列表</div>
        <div style="display: flex; align-items: center; gap: 5px; margin-top: 10px;">
          <!-- 主搜索和添加 -->
          <el-input style="flex: 1;" prefix-icon="el-icon-search" placeholder="输入客户编码搜索"
            v-model="queryParams.customerCode" @change="getCustomerList" clearable></el-input>
          <el-button icon="el-icon-search" @click="toggleQuery"></el-button>
          <el-button type="primary" icon="el-icon-plus" style="margin-left: 0;" @click="handleAdd"></el-button>
        </div>
        <div v-show="showQuery" style="display: flex; align-items: center; gap: 5px; margin-top: 10px;">
          <!-- 查询区，通过上方的查询按钮控制显示隐藏 -->
          <!-- 客户行业和客户等级的下拉选 -->
          <el-select style="width: 100px;" v-model="queryParams.industry" placeholder="客户行业" clearable
            @change="getCustomerList">
            <el-option v-for="item in dict.type.customer_industry" :key="item.value" :label="item.label"
              :value="item.value" />
          </el-select>
          <el-select style="width: 100px;" v-model="queryParams.customerLevel" placeholder="客户等级" clearable
            @change="getCustomerList">
            <el-option v-for="item in dict.type.customer_level" :key="item.value" :label="item.label"
              :value="item.value" />
          </el-select>
        </div>
        <div>
          <!-- 列表区域 -->
          <KLPList :listData="customerList" listKey="customerId" :loading="customerLoading" field1="customerCode"
            field4="companyName" @item-click="handleItemClick">
            <template slot="actions" slot-scope="{ item }">
              <el-button type="danger" size="mini" @click="handleDelete(item)" icon="el-icon-delete"></el-button>
            </template>
          </KLPList>
        </div>
      </el-col>

      <el-col :span="19">
        <el-tabs v-model="activeTab" type="border-card" v-if="currentCustomer && currentCustomer.customerId">
          <el-tab-pane label="客户详情" name="detail">
            <!-- 客户详情区域 -->
            <el-descriptions :column="2" border>
              <el-descriptions-item label="客户编号">
                {{ currentCustomer.customerCode || '-' }}
              </el-descriptions-item>
              <el-descriptions-item label="公司">
                {{ currentCustomer.companyName || '-' }}
              </el-descriptions-item>
              <el-descriptions-item label="联系人">
                {{ currentCustomer.contactPerson || '-' }}
              </el-descriptions-item>
              <el-descriptions-item label="客户联系方式">{{ currentCustomer.contactWay || '-' }}</el-descriptions-item>
              <el-descriptions-item label="客户行业">
                <dict-tag :value="currentCustomer.industry" :options="dict.type.customer_industry"></dict-tag>
              </el-descriptions-item>
              <el-descriptions-item label="客户等级">
                <dict-tag :value="currentCustomer.customerLevel" :options="dict.type.customer_level"></dict-tag>
              </el-descriptions-item>
              <el-descriptions-item label="客户地址" v-hasPermi="['crm:customer:address']">{{ currentCustomer.address || '-'
              }}</el-descriptions-item>
            </el-descriptions>
          </el-tab-pane>
          <el-tab-pane label="信息编辑" name="edit">
            <!-- 客户联系人区域 -->
            <el-form label-position="top" :model="currentCustomer" :disabled="updateLoading">
              <el-row :gutter="20">
                <el-col :span="12">
                  <el-form-item label="客户编号" prop="customerCode">
                    <el-input v-model="currentCustomer.customerCode" placeholder="请输入客户编号"
                      @input="handleDetailChange" />
                  </el-form-item>
                </el-col>
                <el-col :span="12">
                  <el-form-item label="公司" prop="company">
                    <el-input v-model="currentCustomer.companyName" placeholder="请输入公司名称" @input="handleDetailChange" />
                  </el-form-item>
                </el-col>
                <el-col :span="12">
                  <el-form-item label="联系人" prop="contactPerson">
                    <!-- 修复字段映射错误：contact → contactPerson -->
                    <el-input v-model="currentCustomer.contactPerson" placeholder="请输入联系人"
                      @input="handleDetailChange" />
                  </el-form-item>
                </el-col>
                <el-col :span="12">
                  <el-form-item label="客户联系方式" prop="contactWay">
                    <el-input v-model="currentCustomer.contactWay" placeholder="请输入客户联系方式"
                      @input="handleDetailChange" />
                  </el-form-item>
                </el-col>
                <el-col :span="12">
                  <el-form-item label="客户行业" prop="industry">
                    <el-select v-model="currentCustomer.industry" placeholder="请选择客户行业" clearable
                      @change="handleDetailChange">
                      <el-option v-for="item in dict.type.customer_industry" :key="item.value" :label="item.label"
                        :value="item.value" />
                    </el-select>
                  </el-form-item>
                </el-col>
                <el-col :span="12">
                  <el-form-item label="客户等级" prop="level">
                    <el-select v-model="currentCustomer.customerLevel" placeholder="请选择客户等级" clearable
                      @change="handleDetailChange">
                      <el-option v-for="item in dict.type.customer_level" :key="item.value" :label="item.label"
                        :value="item.value" />
                    </el-select>
                  </el-form-item>
                </el-col>
                <el-col :span="24" v-hasPermi="['crm:customer:address']">
                  <el-form-item label="客户地址" prop="address">
                    <el-input type="textarea" v-model="currentCustomer.address" placeholder="请输入客户地址"
                      @input="handleDetailChange" />
                  </el-form-item>
                </el-col>
                <el-col :span="24" v-hasPermi="['crm:customer:bank']">
                  <el-form-item label="银行信息" prop="bankInfo">
                    <JSONTableInput @change="handleDetailChange" v-model="currentCustomer.bankInfo"
                      :columns="[{ prop: 'bankName', label: '银行名称' }, { prop: 'bankAccount', label: '银行账号' }]" />
                  </el-form-item>
                </el-col>
              </el-row>
            </el-form>
          </el-tab-pane>

          <el-tab-pane label="历史订单" name="transaction">
            <!-- 客户交易记录区域 -->
            <div>
              <el-descriptions :column="2" border>
                <el-descriptions-item label="订单总数">{{ currentCustomer.totalCount || 0 }}</el-descriptions-item>
                <el-descriptions-item label="已成交订单数">{{ currentCustomer.dealCount || 0 }}</el-descriptions-item>
                <el-descriptions-item label="待成交订单数">{{ currentCustomer.waitCount || 0 }}</el-descriptions-item>
                <el-descriptions-item label="取消订单数">{{ currentCustomer.cancelCount || 0 }}</el-descriptions-item>
              </el-descriptions>
              <el-table :data="[]" border style="margin-top: 10px;" placeholder="暂无订单数据"></el-table>
            </div>
          </el-tab-pane>
        </el-tabs>

        <el-empty v-else style="margin-top: 20px;" description="选择客户查看详情"></el-empty>
      </el-col>
    </el-row>

    <!-- 添加或修改客户信息对话框 -->
    <el-dialog title="录入客户" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="客户编码" prop="customerCode">
          <el-input v-model="form.customerCode" placeholder="请输入客户编码" />
        </el-form-item>
        <el-form-item label="公司名称" prop="companyName">
          <el-input v-model="form.companyName" placeholder="请输入公司名称" />
        </el-form-item>
        <el-form-item label="联系人" prop="contactPerson">
          <el-input v-model="form.contactPerson" placeholder="请输入联系人" />
        </el-form-item>
        <el-form-item label="联系方式" prop="contactWay">
          <el-input v-model="form.contactWay" placeholder="请输入联系方式" />
        </el-form-item>
        <el-form-item label="所属行业" prop="industry">
          <el-select v-model="form.industry" placeholder="请选择所属行业" clearable>
            <el-option v-for="item in dict.type.customer_industry" :key="item.value" :label="item.label"
              :value="item.value" />
          </el-select>
        </el-form-item>
        <el-form-item label="客户等级" prop="customerLevel">
          <el-select v-model="form.customerLevel" placeholder="请选择客户等级" clearable>
            <el-option v-for="item in dict.type.customer_level" :key="item.value" :label="item.label"
              :value="item.value" />
          </el-select>
        </el-form-item>
        <el-form-item label="客户地址" prop="address">
          <el-input v-model="form.address" placeholder="请输入客户地址" />
        </el-form-item>
        <el-form-item label="备注" prop="remark">
          <el-input v-model="form.remark" placeholder="请输入备注" />
        </el-form-item>
        <el-form-item label="银行信息" prop="transactionRecords">
          <JSONTableInput v-model="form.bankInfo"
            :columns="[{ prop: 'bankName', label: '银行名称' }, { prop: 'bankAccount', label: '银行账号' }]" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button :loading="buttonLoading" type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import KLPList from '@/components/KLPUI/KLPList/index.vue'
import JSONTableInput from '../components/JSONTableInput.vue'

import { listCustomer, addCustomer, updateCustomer, delCustomer } from '@/api/crm/customer'

export default {
  name: 'CustomerPage',
  components: {
    KLPList,
    JSONTableInput
  },
  dicts: ['customer_industry', 'customer_level'],
  data() {
    return {
      customerList: [],
      showQuery: false,
      queryParams: {
        industry: '',
        customerLevel: '',
        customerCode: '',
        pageNum: 1,
        pageSize: 10
      },
      total: 0,
      activeTab: 'detail',
      customerLoading: false,
      currentCustomer: {},
      open: false,
      form: {},
      buttonLoading: false,
      updateLoading: false, // 编辑请求加载状态
      debounceTimer: null, // 防抖定时器
      rules: {
        customerCode: [{ required: true, message: '请输入客户编码', trigger: 'blur' }],
        companyName: [{ required: true, message: '请输入公司名称', trigger: 'blur' }],
        contactPerson: [{ required: true, message: '请输入联系人', trigger: 'blur' }],
        contactWay: [{ required: true, message: '请输入联系方式', trigger: 'blur' }],
        industry: [{ required: true, message: '请选择所属行业', trigger: 'change' }],
        customerLevel: [{ required: true, message: '请选择客户等级', trigger: 'change' }],
        address: [{ required: true, message: '请输入客户地址', trigger: 'blur' }],
      }
    }
  },
  computed: {
    currentCustomerId() {
      return this.currentCustomer.customerId || undefined
    }
  },
  mounted() {
    this.getCustomerList();
  },
  beforeDestroy() {
    // 销毁时清除防抖定时器，避免内存泄漏
    clearTimeout(this.debounceTimer);
  },
  methods: {
    toggleQuery() {
      this.showQuery = !this.showQuery
    },

    /**
     * 防抖函数（通用）
     * @param {Function} fn - 执行函数
     * @param {Number} delay - 延迟时间(ms)
     * @returns {Function} 防抖后的函数
     */
    debounce(fn, delay) {
      return (...args) => {
        // 清除上一次定时器
        if (this.debounceTimer) clearTimeout(this.debounceTimer);
        // 重新设置定时器
        this.debounceTimer = setTimeout(() => {
          fn.apply(this, args);
        }, delay);
      };
    },

    /** 表单编辑变更 - 防抖提交 */
    handleDetailChange: function () {
      // 绑定防抖函数（延迟2秒，仅最后一次变更后执行）
      this.debounce(async () => {
        // 无客户ID或加载中，不执行
        if (!this.currentCustomerId || this.updateLoading) return;

        try {
          this.updateLoading = true;
          // 深拷贝避免请求过程中数据被修改
          const params = { ...this.currentCustomer };
          const res = await updateCustomer(params);
          this.$message({
            type: 'success',
            message: '客户信息更新成功'
          });
          // 同步列表数据（可选）
          this.syncCustomerList(params);
        } catch (error) {
          this.$message({
            type: 'error',
            message: '更新失败：' + (error.msg || '服务器异常')
          });
        } finally {
          this.updateLoading = false;
        }
      }, 1000)();
    },

    /** 同步列表数据（避免列表和详情数据不一致） */
    syncCustomerList(updatedCustomer) {
      const index = this.customerList.findIndex(item => item.customerId === updatedCustomer.customerId);
      if (index > -1) {
        this.$set(this.customerList, index, { ...this.customerList[index], ...updatedCustomer });
      }
    },

    getCustomerList() {
      this.customerLoading = true;
      listCustomer(this.queryParams).then(response => {
        this.customerList = response.rows || [];
        this.total = response.total || 0; // 补充总数
        this.customerLoading = false;
      }).catch(() => {
        this.customerLoading = false;
        this.$message.error('获取客户列表失败');
      });
    },

    handleItemClick(item) {
      // 深拷贝避免原数据被直接修改
      this.currentCustomer = { ...item };
      this.activeTab = 'detail';
    },

    // 表单重置
    reset() {
      this.form = {
        customerId: undefined,
        customerCode: undefined,
        companyName: undefined,
        contactPerson: undefined,
        contactWay: undefined,
        industry: undefined,
        customerLevel: undefined,
        address: undefined,
        bankInfo: undefined,
        remark: undefined,
        createBy: undefined,
        createTime: undefined,
        updateBy: undefined,
        updateTime: undefined,
        delFlag: undefined
      };
      if (this.$refs.form) this.$refs.form.resetFields(); // 修复重置表单
    },

    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
    },

    submitForm() {
      this.$refs.form.validate(async (valid) => {
        if (valid) {
          this.buttonLoading = true;
          try {
            await addCustomer(this.form);
            this.$message({
              message: '客户录入成功',
              type: 'success'
            });
            this.open = false;
            this.getCustomerList();
          } catch (error) {
            this.$message.error('录入失败：' + (error.msg || '服务器异常'));
          } finally {
            this.buttonLoading = false;
          }
        }
      });
    },

    /** 取消按钮操作 */
    cancel() {
      this.reset();
      this.open = false;
    },

    /** 处理删除（补充实现） */
    handleDelete(item) {
      this.$confirm('确定删除该客户吗？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        // 补充删除接口调用逻辑
        await delCustomer(item.customerId);
        this.$message.success('删除成功');
        this.getCustomerList();
      }).catch(() => {
        this.$message.info('已取消删除');
      });
    }
  },
}
</script>

<style scoped>
.app-container {
  padding: 16px;
  height: 100%;
  box-sizing: border-box;
}

.dialog-footer {
  text-align: center;
}
</style>