export default class SKDateUtil {

    static toString(value: Date): string {
        let year = value.getFullYear();
        let month = (value.getMonth() + 1).toString();
        let day = value.getDate().toString();
        let result = `${year}-${month}-${day}`;
        return result;
    }

    static dateBy(value: string): Date {
        if (value == null) {
            return null;
        }
        let params = value.split("-");
        if (params.length != 3) {
            return null;
        }
        let year = parseInt(params[0]);
        let month = parseInt(params[1]);
        let day = parseInt(params[2]);
        let result = new Date(year, month - 1, day);
        return result;
    }

    static atRange(start: string, end: string): boolean {
        let now = new Date();
        let startDate = this.dateBy(start);
        if (startDate) {
            if (now < startDate) {
                return false;
            }
        }
        let endDate = this.dateBy(end);
        if (endDate) {
            if (now > endDate) {
                return false;
            }
        }
        return true;
    }
    // 格式化消息时间
    static formatMsgTime(last: Date): string {
        let year = last.getFullYear();
        let month = last.getMonth() + 1;
        let day = last.getDate();
        let hour = last.getHours();
        let minute = last.getMinutes();
        let now = new Date();
        let now_time = now.getTime();
        let milliseconds = 0;
        let result;
        milliseconds = now_time - last.getTime();
        if (milliseconds <= 1000 * 60 * 1) {
            result = '刚刚';
        }
        else if (1000 * 60 * 1 < milliseconds && milliseconds <= 1000 * 60 * 60) {
            result = Math.round((milliseconds / (1000 * 60))) + '分钟前';
        }
        else if (1000 * 60 * 60 * 1 < milliseconds && milliseconds <= 1000 * 60 * 60 * 24) {
            result = Math.round(milliseconds / (1000 * 60 * 60)) + '小时前';
        }
        else if (1000 * 60 * 60 * 24 < milliseconds && milliseconds <= 1000 * 60 * 60 * 24 * 15) {
            result = Math.round(milliseconds / (1000 * 60 * 60 * 24)) + '天前';
        }
        else if (milliseconds > 1000 * 60 * 60 * 24 * 15 && year == now.getFullYear()) {
            result = month + '-' + day + ' ' + hour + ':' + minute;
        } else {
            result = year + '-' + month + '-' + day + ' ' + hour + ':' + minute;
        }
        return result;
    };
}