package com.nq.service.impl;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.nq.Repository.ExchangeRateRepository;
import com.nq.common.ServerResponse;
import com.nq.dao.ExchangeRateMapper;
import com.nq.pojo.ExchangeRate;
import com.nq.service.ExchangeRateService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import javax.servlet.http.HttpServletRequest;
import java.util.Date;
import java.util.List;

@Service
public class ExchangeRateServiceImpl implements ExchangeRateService {

    private static final Logger log = LoggerFactory.getLogger(ExchangeRateServiceImpl.class);

    @Autowired
    ExchangeRateRepository exchangeRateRepository;

    @Autowired
    ExchangeRateMapper exchangeRateMapper;

    @Override
    public ServerResponse getInfoPage(Integer pageNum, Integer pageSize) {
        try {
            PageHelper.startPage(pageNum, pageSize);
            List<ExchangeRate> exchangeRateList = exchangeRateMapper.selectList(null);
            // 获取分页信息
            PageInfo<ExchangeRate> pageInfo = new PageInfo<>(exchangeRateList);
            return ServerResponse.createBySuccess(pageInfo);
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        }
        return ServerResponse.createByError();
    }

    @Override
    public ServerResponse getInfo() {
        try {
            List<ExchangeRate> exchangeRateList = exchangeRateMapper.selectList(null);
            return ServerResponse.createBySuccess(exchangeRateList);
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        }
        return ServerResponse.createByError();
    }

    @Override
    public ServerResponse updateRate(ExchangeRate model, HttpServletRequest request) {
        try {
            //新增
            if (model.getId() == null) {
                //查询该货币汇率是否存在
                ExchangeRate exchangeRate = exchangeRateRepository.findExchangeRateByCurrencyAndConversionCurrency(model.getCurrency(),
                        model.getConversionCurrency()).orElse(null);
                if (exchangeRate != null) {
                    return ServerResponse.createByErrorMsg("当前货币转换已存在");
                }
                model.setUpdateTime(new Date());
                model = exchangeRateRepository.saveAndFlush(model);
            } else {    //修改
                ExchangeRate exchangeRate = exchangeRateRepository.findById(model.getId()).orElse(null);
                if (exchangeRate  == null) {
                    return ServerResponse.createByErrorMsg("修改失败,记录不存在!");
                }
                //只能修改汇率
                exchangeRate.setRata(model.getRata());
                exchangeRate.setUpdateTime(new Date());
                model = exchangeRateRepository.saveAndFlush(exchangeRate);
            }
            model = exchangeRateRepository.saveAndFlush(model);
            return ServerResponse.createBySuccess("操作成功", model);
        } catch (Exception e) {
            log.error(e.getMessage(), e);
        }
        return ServerResponse.createByError();
    }
}