alphascript-server/lib/util/date.js

CRUD operations for mongo and other functionalities to get started quickly in any CMS project

var moment = require('moment');

module.exports = {
    extract: extract,
    pad: pad,
    collisionDetection: collisionDetection,
    getMinutes: getMinutes
};

function pad(num, size) {
    var s = num + "";
    while (s.length < size) {
        s = "0" + s;
    }
    return s;
}

function extract(date) {
    try {
        return moment(date).format('YYYY-MM-DD');
    } catch (err) {
        return extract(new Date(date));
    }
}

function collisionDetection(start, end, events) {
    start = extract(start);
    end = end ? extract(end) : start;

    if (end < start) {
        return null;
    }

    for (var i = 0; i < events.length; i++) {
        if (events[i].approval) {
            if (events[i].approval.cancelled) {
                continue;
            }

            if (events[i].approval.level < events[i].approval.maxLevel) {
                continue;
            }
        }

        var eventStart = extract(events[i].dateStart);
        var eventEnd = eventStart;
        if (events[i].dateEnd) {
            eventEnd = extract(events[i].dateEnd);
        }

        // $    |__$__|
        if (eventEnd > start && eventEnd <= end) {
            return true;
        }
        // |__$__|    $
        if (eventStart >= start && eventStart < end) {
            return true;
        }
        // $   |____|    $
        if (eventStart <= start && eventEnd >= end) {
            return true;
        }
        // |___$___$____|
        if (eventStart >= start && eventEnd <= end) {
            return true;
        }
    }

    return false;
}

function getMinutes(time) {
    var HourMinutes = time.split(':');
    if (HourMinutes.length == 1) {
        HourMinutes.push(0);
    }

    var hours = parseInt(HourMinutes[0]);
    var minutes = parseInt(HourMinutes[1]);

    return hours * 60 + minutes;
}