package common_utils

import (
	"gitea.anxinyun.cn/container/common_models"
	"gitea.anxinyun.cn/container/common_utils/configLoad"
	"log"
	"strings"
)

type UnitHelper struct {
	configHelper *ConfigHelper
	unitsGroup   map[string][]common_models.DataUnit
}

func NewUnitHelper() *UnitHelper {
	redisAddr := configLoad.LoadConfig().GetString("redis.address")
	unitHelper := &UnitHelper{
		configHelper: NewConfigHelper(redisAddr),
		unitsGroup:   map[string][]common_models.DataUnit{},
	}
	unitHelper.getUnitsGroup()
	return unitHelper
}
func NewUnitHelperWithConfig(configHelper *ConfigHelper) *UnitHelper {
	return &UnitHelper{
		configHelper: configHelper,
		unitsGroup:   map[string][]common_models.DataUnit{},
	}
}

func (the *UnitHelper) getUnitsGroup() {
	dp, err := the.configHelper.GetDataUnit()

	if err != nil {
		return
	}
	units := map[string][]common_models.DataUnit{}
	for _, unit := range dp {
		groupK := unit.Dimension
		if _, ok := units[groupK]; ok {
			units[groupK] = append(units[groupK], unit)
		} else {
			units[groupK] = []common_models.DataUnit{unit}
		}
	}
	the.unitsGroup = units
}

func (the *UnitHelper) GetUnitTransK(from, to string) float64 {
	k := 1.0
	from = strings.ToLower(from)
	to = strings.ToLower(to)
	if from == to {
		return k
	}
	isTransOk := false
	//必须同组的才有效
	for _, units := range the.unitsGroup {
		fromObj := struct {
			isHad bool
			k     float64
		}{}
		toObj := struct {
			isHad bool
			k     float64
		}{}
		for _, unit := range units {
			if unit.Name == from {
				fromObj.isHad = true
				fromObj.k = unit.Coef
			}

			if unit.Name == to {
				toObj.isHad = true
				toObj.k = unit.Coef
			}

		}

		if fromObj.isHad && toObj.isHad {
			k = fromObj.k / toObj.k
			isTransOk = true
			break
		}
	}
	if !isTransOk {
		log.Printf("不支持的单位转换 %s->%s", from, to)
	}

	return k
}