package common

import (
	"fmt"
	"math/rand"
	"net"
	"net/http"
	"strconv"
	"strings"
	"time"
)

func StringToInt(id string) int {
	if id != "" {
		id, err := strconv.Atoi(id)
		if err == nil {
			return id
		}
	}
	return -1
}

func RandomString(n int) string {
	var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
	rand.Seed(time.Now().Unix())
	b := make([]rune, n)
	for i := range b {
		b[i] = letters[rand.Intn(len(letters))]
	}
	return string(b)
}

func RandomString2(n int) string {
	var letters = []rune("ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
	rand.Seed(time.Now().Unix())
	b := make([]rune, n)
	for i := range b {
		b[i] = letters[rand.Intn(len(letters))]
	}
	return string(b)
}

func StringToInt64Array(str string) []int64 {
	tmp := strings.Split(str, ",")
	var result []int64
	for _, t := range tmp {
		i, _ := strconv.ParseInt(t, 10, 64)
		result = append(result, i)
	}
	return result
}

func IntInArray(value int, arr []int) bool {
	for _, i := range arr {
		if value == i {
			return true
		}
	}
	return false
}

func StringToIntArray(value string) []int {
	var result []int
	arr := strings.Split(value, ",")
	for _, a := range arr {
		i, _ := strconv.Atoi(a)
		result = append(result, i)
	}
	return result
}

func CheckTimesHasOverlap(condition1Start, condition1End, condition2Start, condition2End float64) bool {
	//时间不能都为0
	if condition1Start == 0 && condition1End == 0 && condition2Start == 0 && condition2End == 0 {
		return true
	}
	//不能2个都跨天
	if condition1Start > condition1End && condition2Start > condition2End {
		return true
	}
	//开始结束时间不能一致
	if condition1Start == condition2End || condition2Start == condition1End || condition1Start == condition1End || condition2Start == condition2End {
		return true
	}
	//时控1跨天时不能重叠
	if condition1Start > condition1End {
		return condition2Start < condition1End || condition2End > condition1Start
	}
	//时控2跨天时不能重叠
	if condition2Start > condition2End {
		return condition1Start < condition2End || condition1End > condition2Start
	}
	//都不跨天时不能重叠
	return !(condition2End < condition1Start || condition2Start > condition1End)
}

func CheckHourInvalid(hour float64) bool {
	if hour < 0 || hour > 24 {
		return true
	}
	return false
}

func MlParseTime(strTime string) (time.Time, error) {
	if strings.Contains(strTime, ".") {
		return time.ParseInLocation("2006-01-02 15:04:05.000", strTime, time.Local)
	}
	return time.ParseInLocation("2006-01-02 15:04:05", strTime, time.Local)
}

// ControlRelayId 返回回路名
func ControlRelayId(deviceSn string, relayId int) string {
	if relayId == -1 {
		return "全部回路"
	}
	return fmt.Sprintf("回路%v", relayId)
}

// ControlRelaysStatus 返回回路操作状态
func ControlRelaysStatus(deviceSn string, status []uint16) string {
	statusInt := status[0:1]
	if statusInt[0] == 1 {
		return "开"
	}
	return "关"
}
func GetClientIp(ip string) string {
	if ip != "" {
		return ip
	}
	addrs, err := net.InterfaceAddrs()
	if err != nil {
		return "none"
	}
	for _, address := range addrs {
		// 检查ip地址判断是否回环地址
		if ipnet, ok := address.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
			if ipnet.IP.To4() != nil {
				return ipnet.IP.String()
			}

		}
	}
	return "none"
}

func ClientIP(r *http.Request) string {
	xForwardedFor := r.Header.Get("X-Forwarded-For")
	ip := strings.TrimSpace(strings.Split(xForwardedFor, ",")[0])
	if ip != "" {
		return ip
	}

	ip = strings.TrimSpace(r.Header.Get("X-Real-Ip"))
	if ip != "" {
		return ip
	}

	if ip, _, err := net.SplitHostPort(strings.TrimSpace(r.RemoteAddr)); err == nil {
		return ip
	}

	return ""
}