package com.ruoyi.basic.service.impl;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.ruoyi.basic.mapper.CustomerMapper;
import com.ruoyi.basic.pojo.Customer;
import com.ruoyi.basic.service.ICustomerService;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.framework.security.LoginUser;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;

import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.stream.Collectors;


/**
 * 客户档案Service业务层处理
 *
 * @author ruoyi
 * @date 2025-05-07
 */
@Service
@AllArgsConstructor
@Slf4j
public class CustomerServiceImpl extends ServiceImpl<CustomerMapper, Customer> implements ICustomerService {
    private CustomerMapper customerMapper;

    /**
     * 查询客户档案
     *
     * @param id 客户档案主键
     * @return 客户档案
     */
    @Override
    public Customer selectCustomerById(Long id) {
        return customerMapper.selectById(id);
    }

    /**
     * 查询客户档案列表
     *
     * @param customer 客户档案
     * @return 客户档案
     */
    @Override
    public IPage<Customer> selectCustomerList(Page page, Customer customer) {
        // 1. 处理空值场景（参数校验）
        if (page == null) {
            page = Page.of(1, 10); // 默认第1页，每页10条数据
        }
        if (customer == null) {
            customer = new Customer(); // 避免空对象导致的NPE
        }

        // 2. 构建查询条件（增强空值安全）
        LambdaQueryWrapper<Customer> queryWrapper = new LambdaQueryWrapper<>();
        String customerName = customer.getCustomerName();
        if (StringUtils.isNotBlank(customerName)) {
            queryWrapper.like(Customer::getCustomerName, customerName);
        }

        // 3. 执行分页查询（保留分页元数据）
        IPage<Customer> customerPage = customerMapper.selectPage(page, queryWrapper);

        // 4. 数据处理（增强空值安全 & 代码可读性）
        List<Customer> processedList = customerPage.getRecords().stream()
                .filter(Objects::nonNull) // 过滤空对象（避免后续操作NPE）
                .peek(c -> {
                    // 安全获取字段，避免null值拼接
                    String address = StringUtils.defaultString(c.getCompanyAddress(), "");
                    String phone = StringUtils.defaultString(c.getCompanyPhone(), "");
                    c.setAddressPhone(address + "(" + phone + ")"); // 优化字符串拼接
                })
                .collect(Collectors.toList());

        // 5. 更新分页结果中的数据（保持分页信息完整）
        customerPage.setRecords(processedList);

        return customerPage; // 返回包含分页信息的IPage对象
    }

    /**
     * 新增客户档案
     *
     * @param customer 客户档案
     * @return 结果
     */
    @Override
    public int insertCustomer(Customer customer) {
        LoginUser loginUser = SecurityUtils.getLoginUser();
        Integer tenantId = loginUser.getTenantId();
        customer.setTenantId(Long.valueOf(tenantId));
        return customerMapper.insert(customer);
    }

    /**
     * 修改客户档案
     *
     * @param customer 客户档案
     * @return 结果
     */
    @Override
    public int updateCustomer(Customer customer) {
        LoginUser loginUser = SecurityUtils.getLoginUser();
        Integer tenantId = loginUser.getTenantId();
        customer.setTenantId(Long.valueOf(tenantId));
        return customerMapper.updateById(customer);
    }

    /**
     * 批量删除客户档案
     *
     * @param ids 需要删除的客户档案主键
     * @return 结果
     */
    @Override
    public int deleteCustomerByIds(Long[] ids) {
        List<Long> idList = Arrays.asList(ids);
        return customerMapper.deleteBatchIds(idList);
    }

    @Override
    public List<Customer> selectCustomerListByIds(Long[] ids) {
        LambdaQueryWrapper<Customer> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(Customer::getId, Arrays.asList(ids));
        return customerMapper.selectList(queryWrapper);
    }

    @Override
    public List<Customer> selectCustomerLists(Customer customer) {
        return customerMapper.selectList(null);
    }

    @Override
    public List<Map<String, Object>> customerList(Customer customer) {
        LambdaQueryWrapper<Customer> queryWrapper = Wrappers.lambdaQuery();
        queryWrapper.select(Customer::getId, Customer::getCustomerName, Customer::getTaxpayerIdentificationNumber);

        // 获取原始查询结果
        List<Map<String, Object>> result = customerMapper.selectMaps(queryWrapper);

        // 将下划线命名转换为驼峰命名
        return result.stream().map(map -> map.entrySet().stream()
                .collect(Collectors.toMap(
                        entry -> underlineToCamel(entry.getKey()),
                        Map.Entry::getValue))
        ).collect(Collectors.toList());
    }

    /**
     * 下划线命名转驼峰命名
     */
    private String underlineToCamel(String param) {
        if (param == null || "".equals(param.trim())) {
            return "";
        }
        int len = param.length();
        StringBuilder sb = new StringBuilder(len);
        for (int i = 0; i < len; i++) {
            char c = param.charAt(i);
            if (c == '_') {
                if (++i < len) {
                    sb.append(Character.toUpperCase(param.charAt(i)));
                }
            } else {
                sb.append(Character.toLowerCase(c));
            }
        }
        return sb.toString();
    }
}