import { TIME_FORMAT, REFRESH_TIME } from '../consts';

const PER_SECOND = 1 * 1000;
const PER_DAY = 24 * 60 * 60;
const PER_MINUTE = 60;
const PER_HOUR = 60 * 60;

export function getSeconds(time: Date) {
    return Math.floor(time.getTime() / PER_SECOND);
}

export function nowSeconds() {
    return Math.floor(Date.now() / PER_SECOND );
}

export function getTodayZeroPoint(hour = REFRESH_TIME) {
    var date = new Date();
    date.setHours(hour);
    date.setMinutes(0);
    date.setSeconds(0);
    var time = Math.floor(date.getTime() / PER_SECOND);
    return time;
}

export function checkTodayTime(seasonEndTime: number) {
    if (seasonEndTime - nowSeconds() <= PER_DAY) {
        return true;
    }
    return false;
}

export function getBeforeDayDate(day: number) {     
    let time = getTodayZeroPoint() - day * PER_DAY;
    return time;     
}

/**
 * 获取几天以前（按秒获取）
 * @param day 几天以前
 */
export function getBeforeDaySeconds(day: number) {     
    let time = nowSeconds() - day * PER_DAY;
    return time;
}

export function getBeforeHourSeconds(hour: number) {     
    let time = nowSeconds() - hour * PER_HOUR;
    return time;
}

export function getBeforeMinuteSeconds(minute: number) {     
    let time = nowSeconds() - minute * PER_MINUTE;
    return time;
}

export function getBeforeSeconds(seconds: number) {     
    let time = nowSeconds() - seconds;
    return time;
}


export function getCurWeekDate(day: number, hour: number) {
    return getWeekDate(new Date(), day, hour);
}

export function getWeekDate(now: Date, day: number, hour: number){ //获得本周的开端日期
    var nowDayOfWeek = now.getDay();
    if(nowDayOfWeek == 0) nowDayOfWeek = 7;

    let nowDay = now.getDate();
    let nowYear = now.getFullYear(); //当前年
    let nowMonth = now.getMonth(); //月
    return new Date(nowYear, nowMonth, nowDay - nowDayOfWeek + day, hour);
};

export function getCurWeekTime(day: number, hour: number) {
    let data = getWeekDate(new Date(), day, hour);
    return Math.floor(data.getTime()/PER_SECOND);
}

export function getCurMonthDate(day: number, hour: number) {
    return getMonthDate(new Date(), day, hour);
}

export function getCurMonthTime(day: number, hour: number) {
    let data = getMonthDate(new Date(), day, hour);
    return Math.floor(data.getTime()/PER_SECOND);
}

/**
 * @description 获取某个时间的当月的某一天的某一时
 * @param {{Date}} now 时间
 * @param {{number}} day 哪天
 * @param {{number}} hour 几点
 */
export function getMonthDate(now: Date, day: number, hour: number){ //获得本周的开端日期
    let nowYear = now.getFullYear(); //当前年
    let nowMonth = now.getMonth(); //月
    return new Date(nowYear, nowMonth, day, hour);
};


export function getHourPoint(hour: number) {
    var date = new Date();
    date.setHours(hour);
    date.setMinutes(0);
    date.setSeconds(0);
    var time = Math.floor(date.getTime() / PER_SECOND);
    if (nowSeconds() < time) {
        return time - PER_DAY;
    }
    return time;
}

export function getCurHourPoint(hour: number, minute: number = 0, seconds: number = 0) {
    var date = new Date();
    date.setHours(hour);
    date.setMinutes(minute);
    date.setSeconds(seconds);
    var time = Math.floor(date.getTime() / PER_SECOND);
    return time;
}

/**
 * 获取第2天凌晨几点的时间戳
 * @param hour 
 */
export function getNextHourPoint(hour: number) {
    var date = new Date();
    date.setHours(hour);
    date.setMinutes(0);
    date.setSeconds(0);
    var time = Math.floor(date.getTime() / PER_SECOND);
    if (nowSeconds() > time) {
        return time + PER_DAY;
    }
    return time;
}

export function getTodayZeroDate(hour = 0) {
    var date = new Date();
    date.setHours(hour);
    date.setMinutes(0);
    date.setSeconds(0);
    return date;
}

export function getZeroDateByDeltaDay(delta: number) {
    var date = new Date(new Date().getTime() + delta * PER_DAY * PER_SECOND);
    date.setHours(0);
    date.setMinutes(0);
    date.setSeconds(0);
    return date;
}

export function getAge(birthday: string) {
    let d = new Date(birthday + ' 00:00:00');
    let _year = d.getFullYear();
    let _month = d.getMonth() + 1;
    let _day = d.getDate();

    let age = 0;
    let now = new Date();
    let year = now.getFullYear();
    let month = now.getMonth() + 1;
    let day = now.getDate();

    if (year >= _year && month >= _month && day >= _day) {
        age = year - _year;
    }else{
        age = year - _year - 1;
    }
    return age
}

export function formatTime(d: Date, type: number) {
    let year = d.getFullYear();
    let month = d.getMonth() + 1;
    let day = d.getDate();
    let yearStr = year.toString();
    let monthStr = month.toString();
    let dayStr = day.toString();

    if(type == TIME_FORMAT.TYPE_SLASH) {
        if(day < 10) dayStr = '0' + dayStr;
        if(month < 10) monthStr = '0' + monthStr;
        return `${yearStr}/${monthStr}/${dayStr}`;
    }
}

/**
 * @description 获取指定时间后的某个时间点，如给定 date 后的晚八点整
 * @export
 * @param {Date} date 给定时间
 * @param {number} h 给定小时
 * @param {number} [m=0] 给定分钟
 * @param {number} [s=0] 给定秒
 * @returns {Date}
 */
export function getNextTime(date: Date, h: number, m = 0, s = 0, ms = 0): Date {
    const milliseconds = date.getTime();
    const timeToday = new Date(milliseconds).setHours(h, m, s, ms);
    return timeToday >= milliseconds ? new Date(timeToday) : new Date(timeToday + PER_DAY * PER_SECOND);
}

/**
 * 获得某个时间是星期几
 * @param needHandle 是否处理周日
 * @param {Date} time 
 */

let week = undefined;

export function getCurDay(needHandle = false, time?: Date) {
    if(!time) time = new Date();
    let d = time.getDay();

    if(week != undefined) {
        d = week;
    }
    if(needHandle && d == 0) d = 7;

    return d;
}

export function setWeek(d?: number) {
    week = d;
    if(d == 7) week = 0;
}