package com.moral.api.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.moral.api.entity.UnitConversion;
import com.moral.api.mapper.UnitConversionMapper;
import com.moral.api.service.UnitConversionService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.moral.constant.Constants;
import com.moral.constant.RedisConstants;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * <p>
 * 单位转换表 服务实现类
 * </p>
 *
 * @author moral
 * @since 2021-07-12
 */
@Service
public class UnitConversionServiceImpl extends ServiceImpl<UnitConversionMapper, UnitConversion> implements UnitConversionService {

    @Autowired
    RedisTemplate redisTemplate;
    @Autowired
    UnitConversionMapper unitConversionMapper;

    @Override
    public String getFormula(Integer srcUnitId, Integer posUnitId, String sensorCode) {
        List<UnitConversion> unitConversions = redisTemplate.opsForList().range(RedisConstants.UNIT_CONVERSION, 0, -1);
        if (unitConversions == null) {
            QueryWrapper<UnitConversion> wrapper = new QueryWrapper();
            wrapper.eq("is_delete", Constants.NOT_DELETE);
            unitConversions = unitConversionMapper.selectList(wrapper);
        }
        List<UnitConversion> sensorConversion = new ArrayList<>();
        Iterator<UnitConversion> iterator = unitConversions.iterator();
        while (iterator.hasNext()) {
            UnitConversion unitConversion = iterator.next();
            if (unitConversion.getSensorCode() != null) {
                sensorConversion.add(unitConversion);
                iterator.remove();
            }
        }
        for (UnitConversion unitConversion : sensorConversion) {
            if (unitConversion.getOriginalUnitKey().equals(srcUnitId) && unitConversion.getTargetUnitKey().equals(posUnitId) && unitConversion.getSensorCode().equals(sensorCode))
                return unitConversion.getFormula();
        }

        for (UnitConversion unitConversion : unitConversions) {
            if (unitConversion.getOriginalUnitKey().equals(srcUnitId) && unitConversion.getTargetUnitKey().equals(posUnitId))
                return unitConversion.getFormula();
        }

        return null;
    }
}