export default class  DataTimeUtil {
        /**时间偏移*/
        public static offset: number = 0;
        /**
         * 当前时间戳（毫秒）
         * @returns 
         */
        public static currentTimeMillis (): number {
            return new Date().getTime() + this.offset;
        }
    
        /**
         * 当前时间戳（秒）
         * @returns
         */
        public static currentTimeSeconds (): number {
            return Math.floor((new Date().getTime() + this.offset) / 1000);
        }
        /**当前服务器日期*/
        public static currentDate():Date{
            return new Date(this.currentTimeMillis ());
        }
        /**将毫秒时间戳转到当天0点时的毫秒时间戳*/
        public static timestampToStartOfDay(timestamp:number):number {
            let date = new Date(timestamp); // 将时间戳转换为日期对象
            date.setHours(0, 0, 0, 0); // 将时、分、秒、毫秒部分设置为0
            return date.getTime(); // 将日期转换回时间戳
        }
        /**将秒时间戳转到当天0点时的秒时间戳*/
        public static timestampSecondsToStartOfDay(timestamp:number):number {
            let date = new Date(timestamp*1000); // 将时间戳转换为日期对象
            date.setHours(0, 0, 0, 0); // 将时、分、秒、毫秒部分设置为0
            return Math.floor(date.getTime()/1000); // 将日期转换回时间戳
        }
        /**获取服务器到明天0点时长 */
        public static longToTomorrow():number{
            // 获取当前时间
           const now = this.currentDate();
           // 获取明天的日期
           const tomorrow = new Date(now);
           tomorrow.setDate(now.getDate() + 1);
           tomorrow.setHours(0, 0, 0, 0);
           // 计算时间差
           return tomorrow.getTime() - now.getTime();
        }
        /**当前服务器月份*/
        public static currentMonth():number{
              return this.currentDate().getMonth() + 1; // 月份从0开始，所以需要加1
        }
        /**当前服务器日期月有多少天 */
        public static daysInCurrentMonth():number{
              const currentYear = this.currentDate().getFullYear();
              const daysInCurrentMonth = new Date(currentYear, this.currentMonth(), 0).getDate();
              return daysInCurrentMonth;
        }
        public static timeMillisToDate(ms:number):Date{
            return new Date(ms);
        }
        public static stringToStamp(dateString:string):number{
            const timestamp: number = Date.parse(dateString) - new Date().getTimezoneOffset() * 60 * 1000;
            return timestamp;
        }
        public static stringToDate(dateString:string):Date{
            return new Date(dateString);
        }
        public static dateToString(date:Date):string{
             const year: number = date.getFullYear();
             const month: number = date.getMonth() + 1;
             const day: number = date.getDate();
             const hours: number = date.getHours();
             const minutes: number = date.getMinutes();
             const seconds: number = date.getSeconds();
             // 自定义格式化日期和时间
             const formattedDateTime: string = `${year}-${month.toString().padStart(2, '0')}-${day.toString().padStart(2, '0')} ${hours.toString().padStart(2, '0')}:${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}`;
             return formattedDateTime;
        }
        /**本周一0点的时间戳*/
        public static mondayTimestamp():number{
            const currentDate=this.currentDate();
            // 获取当前日期的星期几（星期天为0，星期一为1，以此类推）
            const currentDayOfWeek = currentDate.getDay();
            // 计算当前日期距离周一的天数差值
            const daysUntilMonday = (currentDayOfWeek === 0) ? 6 : currentDayOfWeek - 1;
            return currentDate.getTime() - (daysUntilMonday * 24 * 60 * 60 * 1000);
        }


        /*private _day_s = 864e5;
        private _diff:number=0;
        private updateServerTime(s:number):void{ this._diff = s - (new Date).getTime()}
        public now():number{return this.getTime()}
        public getTime():number { return (new Date).getTime() + this._diff;} 
        public getDayStartTime(s:number):number {return new Date(s).setHours(0, 0, 0, 0)}
        public getDayEndTime(e:number):number { return new Date(e).setHours(23, 59, 59, 999)}
        public getWeekEndTime (e:number):number {
              var t = new Date(e).getDay();
              return this.getDayEndTime(e) + (0 === t ? 0 : (7 - t) * this._day_s)
        }
        public getMonthEndTime(e:number):number {
              var t = new Date(e);
              return 11 === t.getMonth() ? t.setFullYear(t.getFullYear() + 1, 0, 0) : t.setMonth(t.getMonth() + 1, 0), t.setHours(23, 59, 59, 999)
        }
        public getDiffDayNum (e:number, t:number) {
              var r = this.getDayStartTime(e),o = this.getDayStartTime(t);
              return Math.ceil(Math.abs(r - o) / this._day_s)
        }*/




        /**获取时间戳*/
        private static getTickCount() {
            if(window && window.performance){
                return window.performance.now();
            }
            return (new Date()).getTime();
        }














    //-----------------------------------------------------------------------------------------------------------------------------
    /**
     * 根据秒数格式化字符串
     * @param second 秒数
     * @param type 1:00:00:00   2:yyyy-mm-dd h:m:s    3:00:00(分:秒)   4:xx天前，xx小时前，xx分钟前    6:00:00(时:分)  
     * @return
     *
     */
    public static getFormatBySecond(second: number, type: number = 1): string {
        var str: string = "";
        switch (type) {
            case 1:
                str = this.getFormatBySecond1(second);
                break;
            case 2:
                str = this.getFormatBySecond2(second);
                break;
            case 3:
                str = this.getFormatBySecond3(second);
                break;
            case 4:
                str = this.getFormatBySecond4(second);
                break;
            case 5:
                str = this.getFormatBySecond5(second);
                break;
            case 6:
                str = this.getFormatBySecond6(second);
                break;
        }
        return str;
    }

    //1: 00:00:00
    private static getFormatBySecond1(t: number = 0): string {
        var hourst: number = Math.floor(t / 3600);
        var hours: string;
        if (hourst == 0) {
            hours = "00";
        } else {
            if (hourst < 10)
                hours = "0" + hourst;
            else
                hours = "" + hourst;
        }
        var minst: number = Math.floor((t - hourst * 3600) / 60);
        var secondt: number = Math.floor((t - hourst * 3600) % 60);
        var mins: string;
        var sens: string;
        if (minst == 0) {
            mins = "00";
        } else if (minst < 10) {
            mins = "0" + minst;
        } else {
            mins = "" + minst;
        }
        if (secondt == 0) {
            sens = "00";
        } else if (secondt < 10) {
            sens = "0" + secondt;
        } else {
            sens = "" + secondt;
        }
        return hours + ":" + mins + ":" + sens;
    }

    //3:00:00(分:秒)
    private static getFormatBySecond3(t: number = 0): string {
        var hourst: number = Math.floor(t / 3600);
        var minst: number = Math.floor((t - hourst * 3600) / 60);
        var secondt: number = Math.floor((t - hourst * 3600) % 60);
        var mins: string;
        var sens: string;
        if (minst == 0) {
            mins = "00";
        } else if (minst < 10) {
            mins = "0" + minst;
        } else {
            mins = "" + minst;
        }
        if (secondt == 0) {
            sens = "00";
        } else if (secondt < 10) {
            sens = "0" + secondt;
        } else {
            sens = "" + secondt;
        }
        return mins + ":" + sens;
    }

    //2:yyyy-mm-dd h:m:s
    private static getFormatBySecond2(time: number): string {
        var date: Date = new Date(time*1000);
        var year: number = date.getFullYear();
        var month: number = date.getMonth() + 1; 	//返回的月份从0-11；
        var day: number = date.getDate();
        var hours: number = date.getHours();
        var minute: number = date.getMinutes();
        var second: number = date.getSeconds();
        return year + "-" + month + "-" + day + " " + hours + ":" + minute + ":" + second;

    }

    //4:xx天前，xx小时前，xx分钟前
    private static getFormatBySecond4(time: number): string {
        var t = Math.floor(time / 3600);
        if (t > 0) {
            if (t > 24) {
                return Math.floor(t / 24) + "天前";
            }
            else {
                return t + "小时前";
            }
        }
        else {
            return Math.floor(time / 60) + "分钟前";
        }
    }

    private static getFormatBySecond5(time: number): string {
        //每个时间单位所对应的秒数
        var oneDay: number = 3600 * 24;
        var oneHourst: number = 3600;
        var oneMinst: number = 60;

        var days = Math.floor(time / oneDay);
        var hourst: number = Math.floor(time % oneDay / oneHourst)
        var minst: number = Math.floor((time - hourst * oneHourst) / oneMinst)  //Math.floor(time % oneDay % oneHourst / oneMinst);
        var secondt: number = Math.floor((time - hourst * oneHourst) % oneMinst) //time;

        var dayss: string = "";
        var hourss: string = ""
        var minss: string = "";
        var secss: string = ""
        if (time > 0) {
            //天
            if (days == 0) {
                dayss = "";
                //小时
                if (hourst == 0) {
                    hourss = "";
                    //分
                    if (minst == 0) {
                        minss = "";
                        if (secondt == 0) {
                            secss = "";
                        } else if (secondt < 10) {
                            secss = "0" + secondt + "秒";
                        } else {
                            secss = "" + secondt + "秒";
                        }

                        return secss;
                    }
                    else {
                        minss = "" + minst + "分";
                        if (secondt == 0) {
                            secss = "";
                        } else if (secondt < 10) {
                            secss = "0" + secondt + "秒";
                        } else {
                            secss = "" + secondt + "秒";
                        }

                    }

                    return minss + secss;
                }
                else {
                    hourss = hourst + "小时";
                    if (minst == 0) {
                        minss = "";
                        if (secondt == 0) {
                            secss = "";
                        } else if (secondt < 10) {
                            secss = "0" + secondt + "秒";
                        } else {
                            secss = "" + secondt + "秒";
                        }

                        return secss

                    } else if (minst < 10) {
                        minss = "0" + minst + "分";
                    } else {
                        minss = "" + minst + "分";
                    }

                    return hourss + minss;

                }
            }
            else {
                dayss = days + "天";
                if (hourst == 0) {
                    hourss = "";
                } else {
                    if (hourst < 10)
                        hourss = "0" + hourst + "小时";
                    else
                        hourss = "" + hourst + "小时";
                    ;
                }
                return dayss + hourss;
            }
        }
        return "";
    }

    //6:00:00(时:分) 
    private static getFormatBySecond6(t: number = 0): string {
        var hourst: number = Math.floor(t / 3600);
        var minst: number = Math.floor((t - hourst * 3600) / 60);
        var houers: string;
        var mins: string;
        if (hourst == 0) {
            houers = "00";
        } else if (hourst < 10) {
            houers = "0" + hourst;
        } else {
            houers = "" + hourst;
        }
        if (minst == 0) {
            mins = "00";
        } else if (minst < 10) {
            mins = "0" + minst;
        } else {
            mins = "" + minst;
        }
        return houers + ":" + mins;
    }


    /**
     * 获取当前是周几
     * ["星期日","星期一","星期二","星期三","星期四","星期五","星期六"]
     */
    public static getDay(timestamp: number): number {
        let date = new Date(timestamp);
        return date.getDay();
    }

    /**
     * 判定两个时间是否是同一天
     */
    public static isSameDate(timestamp1: number, timestamp2: number): boolean {
        let date1 = new Date(timestamp1);
        let date2 = new Date(timestamp2);
        return date1.getFullYear() == date2.getFullYear()
            && date1.getMonth() == date2.getMonth()
            && date1.getDate() == date2.getDate();
    }

    /**
     * 日期格式化
     */
    public static format(d: Date, fmt: string = "yyyy-MM-dd hh:mm:ss"): string {
        let o = {
            "M+": d.getMonth() + 1, //month
            "d+": d.getDate(),    //day
            "h+": d.getHours(),   //hour
            "m+": d.getMinutes(), //minute
            "s+": d.getSeconds(), //second
            "q+": Math.floor((d.getMonth() + 3) / 3),  //quarter
            "S": d.getMilliseconds() //millisecond
        }
        if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1,
            (d.getFullYear() + "").substr(4 - RegExp.$1.length));
        for (var k in o) if (new RegExp("(" + k + ")").test(fmt))
            fmt = fmt.replace(RegExp.$1,
                RegExp.$1.length == 1 ? o[k] :
                    ("00" + o[k]).substr(("" + o[k]).length));
        return fmt;
    }
    /**
     * 计算两个时间(秒)相差天数(不满一天算0天)
     */
    public static getDayCountSeconds(timestamp1: number, timestamp2: number): number {
        const d_value: number = Math.abs(timestamp2 - timestamp1);
        return Math.floor(d_value / (24 * 60 * 60));
    }
    /**
     * 计算两个时间相差天数
     */
    public static dateDifference(timestamp1: number, timestamp2: number): number {
        const d_value: number = Math.abs(timestamp2 - timestamp1);
        return Math.ceil(d_value / (24 * 60 * 60 * 1000));
    }
}