import moment from 'moment'

class DateUtil {

    // 获取上一个小时段
    static getLastHourPeriod(): any {
        let d = new Date()
        d.setMilliseconds(0)
        d.setSeconds(0)
        d.setMinutes(0)
        let _end = (d.getTime() / 1000)
        let _begin = _end - 60 * 60 * 1
        let begin = DateUtil.getTime(_begin)
        let end = DateUtil.getTime(_end)

        return { begin, end }
    }

    static getLastDayDate(): string {
        return moment().subtract(1, "days").format("YYYY-MM-DD")
    }

    static getTheDayBeforeYesterday(): string {
        return moment().subtract(2, "days").format("YYYY-MM-DD")
    }

    static getCurrentDate(): string {
        return moment().format("YYYY-MM-DD")
    }

    static getCurrentTime(): string {
        return moment().format("YYYY-MM-DD HH:mm:ss")
    }

    static getTime(timestamp: number): string {
        return moment(timestamp * 1000).format("YYYY-MM-DD HH:mm:ss")
    }

    static getDate(timestamp: number): string {
        return moment(timestamp * 1000).format("YYYY-MM-DD")
    }

    static getHour(timestamp: number): string {
        return moment(timestamp * 1000).format("HH")
    }

    static getCurrentTimestamp(): number {
        return parseInt((Date.now() / 1000).toFixed(0))
    }

    // 获取上一天的时间戳范围
    static getLastDayTs(): any {
        let d = new Date()

        d.setHours(0)
        d.setMinutes(0)
        d.setSeconds(0)
        d.setMilliseconds(0)
        let end = (d.getTime() / 1000)
        let begin = end - 60 * 60 * 24

        return { begin, end }
    }

    // 获取一个整点的时间戳，下一个五分钟，下一个半小时，下一个一小时，下一个天
    static getTsByType(type: string): any {
        let d = new Date()
        let begin = 0
        let end = 0

        switch (type) {
            case "5min":
                d.setMilliseconds(0)
                d.setSeconds(0)
                d.setMinutes(0)
                begin = (d.getTime() / 1000)
                end = begin + 60 * 5 
                break

            case "30min":
                d.setMilliseconds(0)
                d.setSeconds(0)
                
                let mins = d.getMinutes()
                
                if (mins < 30) {
                    d.setMinutes(0)
                } else {
                    d.setMinutes(30)
                }

                begin = (d.getTime() / 1000)
                end = begin + 60 * 30
                break

            case "1h":
                d.setMilliseconds(0)
                d.setSeconds(0)
                d.setMinutes(0)
                begin = (d.getTime() / 1000)
                end = begin + 60 * 60
                break

            // 获取下一天的时间戳
            case "1d":
                d.setHours(0)
                d.setMinutes(0)
                d.setSeconds(0)
                d.setMilliseconds(0)
                begin = (d.getTime() / 1000)
                end = begin + 60 * 60 * 24
                break
        
            default:
                break
        }

        return { begin, end }
    }
}

export = DateUtil