package com.ruoyi.basic.service.impl;


import com.alibaba.fastjson2.JSONArray;
import com.alibaba.fastjson2.JSONObject;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
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.dto.CustomerDto;
import com.ruoyi.basic.dto.CustomerFollowUpDto;
import com.ruoyi.basic.mapper.CustomerMapper;
import com.ruoyi.basic.pojo.Customer;
import com.ruoyi.basic.pojo.CustomerFollowUp;
import com.ruoyi.basic.pojo.CustomerFollowUpFile;
import com.ruoyi.basic.service.CustomerFollowUpFileService;
import com.ruoyi.basic.service.CustomerFollowUpService;
import com.ruoyi.basic.service.CustomerReturnVisitService;
import com.ruoyi.basic.service.ICustomerService;
import com.ruoyi.common.utils.SecurityUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.poi.ExcelUtil;
import com.ruoyi.framework.config.AliDingConfig;
import com.ruoyi.framework.security.LoginUser;
import com.ruoyi.framework.util.AliDingUtils;
import com.ruoyi.framework.web.domain.AjaxResult;
import com.ruoyi.production.enums.MaterialConfigTypeEnum;
import com.ruoyi.production.pojo.ProductMaterial;
import com.ruoyi.production.pojo.ProductMaterialSku;
import com.ruoyi.productionPlan.enums.DataSourceTypeEnum;
import com.ruoyi.productionPlan.pojo.ProductionPlan;
import com.ruoyi.project.system.domain.SysUser;
import com.ruoyi.sales.mapper.SalesLedgerMapper;
import com.ruoyi.sales.pojo.SalesLedger;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import org.springframework.web.multipart.MultipartFile;

import java.time.Instant;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.*;
import java.util.concurrent.locks.ReentrantLock;
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 final SalesLedgerMapper salesLedgerMapper;
    private CustomerMapper customerMapper;

    private CustomerFollowUpService customerFollowUpService;

    private CustomerFollowUpFileService customerFollowUpFileService;

    private CustomerReturnVisitService customerReturnVisitService;

    private AliDingConfig aliDingConfig;

    /**
     * 同步锁，防止手动和定时任务同时执行
     */
    private final ReentrantLock syncLock = new ReentrantLock();

    /**
     * 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);
    }

    /**
     * 查询客户详情（含跟进记录和附件）
     *
     * @param id 客户档案主键
     * @return 客户详情DTO
     */
    @Override
    public CustomerDto selectCustomerDetailById(Long id) {
        Customer customer = customerMapper.selectById(id);
        if (customer == null) {
            return null;
        }

        CustomerDto dto = new CustomerDto();
        BeanUtils.copyProperties(customer, dto);

        // 查询跟进记录
        List<CustomerFollowUp> followUpList = customerFollowUpService.list(
                new LambdaQueryWrapper<CustomerFollowUp>()
                        .eq(CustomerFollowUp::getCustomerId, id)
                        .orderByDesc(CustomerFollowUp::getFollowUpTime)
        );

        if (!CollectionUtils.isEmpty(followUpList)) {
            List<CustomerFollowUpDto> followUpDtoList = followUpList.stream().map(followUp -> {
                CustomerFollowUpDto followUpDto = new CustomerFollowUpDto();
                BeanUtils.copyProperties(followUp, followUpDto);

                // 查询附件
                List<CustomerFollowUpFile> fileList = customerFollowUpFileService.list(
                        new LambdaQueryWrapper<CustomerFollowUpFile>()
                                .eq(CustomerFollowUpFile::getFollowUpId, followUp.getId())
                );
                followUpDto.setFileList(fileList);

                return followUpDto;
            }).collect(Collectors.toList());

            dto.setFollowUpList(followUpDtoList);
        }

        return dto;
    }

    /**
     * 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<Customer> 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();
        String customerType = customer.getCustomerType();
        if (StringUtils.isNotBlank(customerName)) {
            queryWrapper.like(Customer::getCustomerName, customerName);
        }
        if (StringUtils.isNotBlank(customerType)) {
            queryWrapper.like(Customer::getCustomerType, customerType);
        }

        // 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 + ")");

                    // 查询最新的跟进记录
                    CustomerFollowUp followUp = customerFollowUpService.getOne(
                            new LambdaQueryWrapper<CustomerFollowUp>()
                                    .eq(CustomerFollowUp::getCustomerId, c.getId())
                                    .orderByDesc(CustomerFollowUp::getFollowUpTime)
                                    .last("LIMIT 1")
                    );

                    if (followUp != null) {
                        c.setFollowUpLevel(followUp.getFollowUpLevel());
                        c.setFollowUpTime(followUp.getFollowUpTime());
                    }
                })
                .collect(Collectors.toList());

        // 5. 更新分页结果中的数据（保持分页信息完整）
        IPage<Customer> resultPage = new Page<>(customerPage.getCurrent(), customerPage.getSize(), customerPage.getTotal());
        resultPage.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();
        Long tenantId = loginUser.getTenantId();
        customer.setTenantId(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();
        Long tenantId = loginUser.getTenantId();
        customer.setTenantId(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
    @Transactional(rollbackFor = Exception.class)
    public int deleteCustomerByIds(Long[] ids) {
        List<Long> idList = Arrays.asList(ids);
        List<SalesLedger> salesLedgers = salesLedgerMapper.selectList(new QueryWrapper<SalesLedger>().lambda().in(SalesLedger::getCustomerId, idList));
        if (!salesLedgers.isEmpty()) {
            throw new RuntimeException("客户档案下有销售合同，请先删除销售合同");
        }
        //  删除客户的同时也需要删除对应的客户跟随、附件和回访提醒
        for (Long id : ids) {
            customerFollowUpService.deleteByCustomerId(id);
            customerReturnVisitService.deleteByCustomerId(id);
        }

        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 AjaxResult importData(MultipartFile file) {
        try {
            ExcelUtil<Customer> util = new ExcelUtil<Customer>(Customer.class);
            List<Customer> userList = util.importExcel(file.getInputStream());
            if (CollectionUtils.isEmpty(userList)) {
                return AjaxResult.warn("模板错误或导入数据为空");
            }
            this.saveOrUpdateBatch(userList);
            return AjaxResult.success(true);
        } catch (Exception e) {
            e.printStackTrace();
            return AjaxResult.error("导入失败");
        }

    }

    @Override
    public void syncCustomerJob() {
        syncCustomerData(2);
    }

    @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();
    }


    /**
     * 同步数据
     */
    @Transactional(rollbackFor = Exception.class)
    public void syncCustomerData(Integer dataSyncType) {
        if (!syncLock.tryLock()) {
            log.warn("同步正在进行中，本次 {} 同步请求被跳过", dataSyncType == 1 ? "手动" : "定时任务");
            return;
        }
        try {
            JSONArray searchConditions = new JSONArray();
            JSONObject statusCondition = new JSONObject();
            statusCondition.put("key", "processInstanceStatus");
            JSONArray statusValueArray = new JSONArray();
            statusValueArray.add("COMPLETED");
            statusCondition.put("value", statusValueArray);
            statusCondition.put("type", "ARRAY");
            statusCondition.put("operator", "in");
            statusCondition.put("componentName", "SelectField");
            searchConditions.add(statusCondition);

            JSONObject resultCondition = new JSONObject();
            resultCondition.put("key", "processApprovedResult");
            JSONArray resultValueArray = new JSONArray();
            resultValueArray.add("agree");
            resultCondition.put("value", resultValueArray);
            resultCondition.put("type", "ARRAY");
            resultCondition.put("operator", "in");
            resultCondition.put("componentName", "SelectField");
            searchConditions.add(resultCondition);

            String searchFieldJson = searchConditions.toJSONString();

            JSONArray dataArr = AliDingUtils.getFormDataList(aliDingConfig, aliDingConfig.getCustomerCodeFormUuid(), searchFieldJson, this, Customer::getFormModifiedTime);

            if (dataArr.isEmpty()) {
                log.info("没有更多新数据需要同步");
                return;
            }

            // 解析并保存数据
            List<Customer> list = parseCustomer(dataArr);
            if (!list.isEmpty()) {
                // 处理更新或新增
                int affected = processSaveOrUpdate(list);
                log.info("客户数据同步完成，共同步 {} 条数据", affected);
            }

        } catch (Exception e) {
            log.error("同步客户信息异常", e);
        } finally {
            // 释放锁
            syncLock.unlock();
        }
    }

    private List<Customer> parseCustomer(JSONArray dataArr) {
        List<Customer> list = new ArrayList<>();
        for (int i = 0; i < dataArr.size(); i++) {
            JSONObject item = dataArr.getJSONObject(i);
            String formInstanceId = item.getString("formInstanceId");
            JSONObject formData = item.getJSONObject("formData");
            Customer customer = new Customer();
            customer.setCustomerName(formData.getString("textField_l7fwg8uh"));
            customer.setTaxpayerIdentificationNumber(formData.getString("textField_l88df8ae"));
            customer.setCompanyAddress(formData.getString("textField_l7fwg8uj"));
            customer.setCompanyPhone(formData.getString("textField_lb38bng2"));
            customer.setContactPerson(formData.getString("textField_l7fwg8ut"));
            customer.setContactPhone(formData.getString("textField_l7fwg8uu"));
            customer.setMaintainer("管理员账号");
            LocalDateTime dateTime = AliDingUtils.parseUtcTime(item.getString("modifiedTimeGMT"));
            ZoneId zoneId = ZoneId.of("Asia/Shanghai");
            Date date = Date.from(dateTime.atZone(zoneId).toInstant());
            customer.setMaintenanceTime(date);
            customer.setFormInstanceId(formInstanceId);
            customer.setFormModifiedTime(dateTime);
            list.add(customer);
        }
        return list;
    }

    private int processSaveOrUpdate(List<Customer> list) {
        if (list == null || list.isEmpty()) {
            return 0;
        }
        int affected = 0;

        for (Customer customer : list) {

            LambdaQueryWrapper<Customer> wrapper = new LambdaQueryWrapper<>();
            wrapper.eq(Customer::getFormInstanceId, customer.getFormInstanceId());

            Customer exist = this.getOne(wrapper);
            if (exist == null) {
                this.save(customer);
                affected++;
                log.info("新增客户信息 {}", customer.getCustomerName());
            } else {
                if (exist.getFormModifiedTime() == null || !exist.getFormModifiedTime().equals(customer.getFormModifiedTime())) {
                    customer.setId(exist.getId());
                    this.updateById(customer);
                    affected++;
                    log.info("更新客户信息 {}", customer.getCustomerName());
                }
            }
        }
        return affected;
    }
}