package utils

import (
	"MeterService/core/constant"
	"time"
)

// IsBigEnd 判断是否大端
func IsBigEnd() bool {
	var (
		v3 uint32
		b3 [4]byte
	)
	v3 = 257
	b3[0] = uint8(v3)
	b3[1] = uint8(v3 >> 8)
	b3[2] = uint8(v3 >> 16)
	b3[3] = uint8(v3 >> 24)
	if b3[0] == 1 {
		return false
	}
	return true
}

func IntoByte(c int) byte {
	var (
		b3 [4]byte
	)
	b3[0] = uint8(c)
	b3[1] = uint8(c >> 8)
	b3[2] = uint8(c >> 16)
	b3[3] = uint8(c >> 24)
	if IsBigEnd() {
		return b3[3]
	}
	return b3[0]
}

// NowDataToTimeStamp 获取当前时间戳
func NowDataToTimeStamp() int64 {
	v := time.Now()
	return time.Date(v.Year(), v.Month(), v.Day(), v.Hour(), v.Minute(), 0, 0, time.Local).Unix()
}

func ConnTimeoutJudge(tm int64) bool {
	return TimeDiff(tm, int64(constant.TCPTimeoutTime))
}

// TimeDiff 时间差计算,true表示超过时间
func TimeDiff(tm, mat int64) bool {
	if time.Now().Unix()-tm > mat {
		return true
	} else {
		return false
	}
}

// HfWord2byte 将一个int16转换为两个byte
func HfWord2byte(obj int) (slice []byte) {
	slice = append(slice, IntoByte(obj>>8))
	slice = append(slice, IntoByte(obj&0xFF))
	return
}

// Word2byte 将一个int转换为四个byte
func Word2byte(obj int) (slice []byte) {
	slice = append(slice, IntoByte(obj>>24))
	slice = append(slice, IntoByte(obj>>16))
	slice = append(slice, IntoByte(obj>>8))
	slice = append(slice, IntoByte(obj&0xFF))
	return
}