applets/utils/datePicker.js

class BaseInfo {
    constructor() { this.newDate = new Date(); }
    withData(param) {
        return parseInt(param) < 10 ? '0' + param : '' + param;
    }
    getLoopArray(start, end) {
        var start = start || 0;
        var end = end || 0;
        var array = [];
        for (var i = start; i <= end; i++) {
            array.push(this.withData(i));
        }
        return array;
    }
    formatArr(dateString) {
        return [...dateString.split(' ')[0].split('-'), ...dateString.split(' ')[1].split(':')]
    }
    beforeDateArr(disYear) {
        /*
         * 处理前
         * 获取当前时间
         */
        let year = this.newDate.getFullYear() - (disYear || 0)
        let month = this.newDate.getMonth() + 1
        let day = this.newDate.getDate()
        let hour = this.newDate.getHours()
        let minute = this.newDate.getMinutes()
        return [year, month, day, hour, minute]
    }
    afterDateArr() {
        /*
         * 处理后
         * 获取当前时间
         */
        let year = this.withData(this.newDate.getFullYear())
        let mont = this.withData(this.newDate.getMonth() + 1)
        let date = this.withData(this.newDate.getDate())
        let hour = this.withData(this.newDate.getHours())
        let minu = this.withData(this.newDate.getMinutes())
        return [year, mont, date, hour, minu];
    }
}

// 实现
class dateTimePicker extends BaseInfo {
    constructor(startDate, endDate, defaultDate) {
        super();
        this.dateTimeArray = null
        this.dateTime = null
        this.startDate = super.formatArr(startDate); // 开始时间
        this.endDate = endDate ? super.formatArr(endDate) : super.afterDateArr(); // 结束时间
        this.defaultDate = defaultDate ? super.formatArr(defaultDate) : this.startDate;
    }
    setValue(obj) {
        for (let key in obj) {
            this[key] = obj[key]
        }
    }
    /* 获取当前切换选择的日期值*/
    getCurDateInfo() {
        return this.dateTime && this.dateTimeArray ? {
            year: this.dateTimeArray[0][this.dateTime[0]],
            month: this.dateTimeArray[1][this.dateTime[1]],
            day: this.dateTimeArray[2][this.dateTime[2]],
            hour: this.dateTimeArray[3][this.dateTime[3]],
            second: this.dateTimeArray[4][this.dateTime[4]],
        } : {}
    }
    /* 获取月数组*/
    getMonths() {
        let array = []
        const year = (this.getCurDateInfo().year || this.defaultDate[0]).replace(/年/, '');
        if (this.startDate[0] == this.endDate[0]) {
            /* 
             * 开始的年和结束的年相同
             * 就取(开始月，结束月)
             */
            array = super.getLoopArray(parseInt(this.startDate[1]), parseInt(this.endDate[1]))
        } else {
            switch (year) {
                case this.startDate[0]:
                    /* 开始年 */
                    array = super.getLoopArray(parseInt(this.startDate[1]), 12)
                    break;
                case this.endDate[0]:
                    /* 结束年 */
                    array = super.getLoopArray(1, parseInt(this.endDate[1]))
                    break;
                default:
                    array = super.getLoopArray(1, 12)
                    break;
            }
        }

        return array;
    }
    /* 获取日数组*/
    getDays() {
        let array = []
        let lastDay = null
        const year = (this.getCurDateInfo().year || this.defaultDate[0]).replace(/年/, '');
        const month = (this.getCurDateInfo().month || this.defaultDate[1]).replace(/月/, '');
        const flag = year % 400 == 0 || (year % 4 == 0 && year % 100 != 0);
        switch (month) {
            case '01':
            case '03':
            case '05':
            case '07':
            case '08':
            case '10':
            case '12':
                lastDay = 31
                break;
            case '04':
            case '06':
            case '09':
            case '11':
                lastDay = 30
                break;
            case '02':
                lastDay = flag ? 29 : 28
                break;
            default:
                array = '月份格式不正确，请重新输入！'
        }
        const afterDateArr = super.afterDateArr()
        const _start = year == this.startDate[0] && month == this.startDate[1]
        const _end = year == this.endDate[0] && month == this.endDate[1]
        if (this.startDate[0] == this.endDate[0] && this.startDate[1] == this.endDate[1]) {
            /*
             * 开始的年和结束的年相同，开始月和结束月相同
             * 就取(开始日，结束日)
             */
            array = super.getLoopArray(parseInt(this.startDate[2]), parseInt(this.endDate[2]))
        } else {
            if (_start) { // 开始年月
                array = super.getLoopArray(parseInt(this.startDate[2]), lastDay)
            } else if (_end) { // 结束年月
                array = super.getLoopArray(1, parseInt(this.endDate[2]))
            } else {
                array = super.getLoopArray(1, lastDay)
            }
        }

        return array;
    }

    /* 获取小时数组*/
    getHours() {
        let array = []
        const year = (this.getCurDateInfo().year || this.defaultDate[0]).replace(/年/, '');
        const month = (this.getCurDateInfo().month || this.defaultDate[1]).replace(/月/, '');
        const day = (this.getCurDateInfo().day || this.defaultDate[2]).replace(/日/, '');
        const _start = year == this.startDate[0] && month == this.startDate[1] && day == this.startDate[2]
        const _end = year == this.endDate[0] && month == this.endDate[1] && day == this.endDate[2]
        const _equal = this.startDate[0] == this.endDate[0] && this.startDate[1] == this.endDate[1] && this.startDate[
            2] == this.endDate[2]
        if (_equal) {
            /*
             * 开始的年月日和结束的年月日都相同
             * 就取(开始小时，结束小时)
             */
            array = super.getLoopArray(parseInt(this.startDate[3]), parseInt(this.endDate[3]))
        } else {
            if (_start) { // 开始年月日
                array = super.getLoopArray(parseInt(this.startDate[3]), 23)
            } else if (_end) { // 结尾年月日
                array = super.getLoopArray(0, parseInt(this.endDate[3]))
            } else {
                array = super.getLoopArray(0, 23)
            }
        }
        return array;
    }
    /* 获取分钟数组*/
    getMinutes(years, months, days, hours) {
        let array = []
        const year = (this.getCurDateInfo().year || this.defaultDate[0]).replace(/年/, '');
        const month = (this.getCurDateInfo().month || this.defaultDate[1]).replace(/月/, '');
        const day = (this.getCurDateInfo().day || this.defaultDate[2]).replace(/日/, '');
        const hour = (this.getCurDateInfo().hour || this.defaultDate[3]).replace(/时/, '');
        const _start = year == this.startDate[0] && month == this.startDate[1] && day == this.startDate[2] && hour == this
            .startDate[3]
        const _end = year == this.endDate[0] && month == this.endDate[1] && day == this.endDate[2] && hour == this
            .endDate[3]
        const _equal = this.startDate[0] == this.endDate[0] && this.startDate[1] == this.endDate[1] && this.startDate[
            2] == this.endDate[2] && this.startDate[3] == this.endDate[3]
        if (_equal) {
            /*
             * 开始的年月日时和结束的年月日时都相同
             * 就取(开始小时，结束小时)
             */
            array = super.getLoopArray(parseInt(this.startDate[4]), parseInt(this.endDate[4]))
        } else {
            if (_start) { // 开始年月日
                array = super.getLoopArray(parseInt(this.startDate[4]), 59)
            } else if (_end) { // 结尾年月日
                array = super.getLoopArray(0, parseInt(this.endDate[4]))
            } else {
                array = super.getLoopArray(0, 59)
            }
        }
        return array;
    }
    /*  */
    dispatch(index) {
        let arr = []
        switch (index) {
            case 0:
                arr = super.getLoopArray(this.startDate[0], this.endDate[0]);
                break;
            case 1:
                arr = this.getMonths();
                break;
            case 2:
                arr = this.getDays();
                break;
            case 3:
                arr = this.getHours();
                break;
            case 4:
                arr = this.getMinutes();
                break;
            default:
                break;
        }
        return arr
    }

    /* 初始默认数据 */
    render() {
        const dateTime = []
        const dateTimeArray = [
            [],
            [],
            [],
            [],
            []
        ];
        /*年月日 时分秒*/
        for (let i = 0; i < dateTimeArray.length; i++) {
            dateTimeArray[i] = this.dispatch(i)
        }
        dateTimeArray.forEach((current, index) => {
            const _index = current.indexOf(this.defaultDate[index])
            dateTime.push(_index == -1 ? 0 : _index);
        });

        return {
            dateTimeArray,
            dateTime
        }
    }
}

function newDateTimePicker(startDateTime, endDateTime, pText) {
    let newDateTimePicker = new dateTimePicker(startDateTime, endDateTime, pText)
    return newDateTimePicker
}
module.exports = {
    newDateTimePicker: newDateTimePicker,
}