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Added modularized version that can be included in VueJS and others. #50

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Added modularized version that can be included in VueJS and others. #50

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252 changes: 252 additions & 0 deletions ics.modulized.js
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Original file line number Diff line number Diff line change
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/* global saveAs, Blob, BlobBuilder, console */
/* exported ics */

let saveAs = require('./FileSaver.js');
(function(){
var ics= (function(){
var ics = function(uidDomain, prodId) {
'use strict';

if (navigator.userAgent.indexOf('MSIE') > -1 && navigator.userAgent.indexOf('MSIE 10') == -1) {
console.log('Unsupported Browser');
return;
}

if (typeof uidDomain === 'undefined') { uidDomain = 'default'; }
if (typeof prodId === 'undefined') { prodId = 'Calendar'; }

var SEPARATOR = (navigator.appVersion.indexOf('Win') !== -1) ? '\r\n' : '\n';
var calendarEvents = [];
var calendarStart = [
'BEGIN:VCALENDAR',
'PRODID:' + prodId,
'VERSION:2.0'
].join(SEPARATOR);
var calendarEnd = SEPARATOR + 'END:VCALENDAR';
var BYDAY_VALUES = ['SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA'];

return {
/**
* Returns events array
* @return {array} Events
*/
'events': function() {
return calendarEvents;
},

/**
* Returns calendar
* @return {string} Calendar in iCalendar format
*/
'calendar': function() {
return calendarStart + SEPARATOR + calendarEvents.join(SEPARATOR) + calendarEnd;
},

/**
* Add event to the calendar
* @param {string} subject Subject/Title of event
* @param {string} description Description of event
* @param {string} location Location of event
* @param {string} begin Beginning date of event
* @param {string} stop Ending date of event
*/
'addEvent': function(subject, description, location, begin, stop, rrule) {
// I'm not in the mood to make these optional... So they are all required
if (typeof subject === 'undefined' ||
typeof description === 'undefined' ||
typeof location === 'undefined' ||
typeof begin === 'undefined' ||
typeof stop === 'undefined'
) {
return false;
}

// validate rrule
if (rrule) {
if (!rrule.rrule) {
if (rrule.freq !== 'YEARLY' && rrule.freq !== 'MONTHLY' && rrule.freq !== 'WEEKLY' && rrule.freq !== 'DAILY') {
throw "Recurrence rrule frequency must be provided and be one of the following: 'YEARLY', 'MONTHLY', 'WEEKLY', or 'DAILY'";
}

if (rrule.until) {
if (isNaN(Date.parse(rrule.until))) {
throw "Recurrence rrule 'until' must be a valid date string";
}
}

if (rrule.interval) {
if (isNaN(parseInt(rrule.interval))) {
throw "Recurrence rrule 'interval' must be an integer";
}
}

if (rrule.count) {
if (isNaN(parseInt(rrule.count))) {
throw "Recurrence rrule 'count' must be an integer";
}
}

if (typeof rrule.byday !== 'undefined') {
if ((Object.prototype.toString.call(rrule.byday) !== '[object Array]')) {
throw "Recurrence rrule 'byday' must be an array";
}

if (rrule.byday.length > 7) {
throw "Recurrence rrule 'byday' array must not be longer than the 7 days in a week";
}

// Filter any possible repeats
rrule.byday = rrule.byday.filter(function(elem, pos) {
return rrule.byday.indexOf(elem) == pos;
});

for (var d in rrule.byday) {
if (BYDAY_VALUES.indexOf(rrule.byday[d]) < 0) {
throw "Recurrence rrule 'byday' values must include only the following: 'SU', 'MO', 'TU', 'WE', 'TH', 'FR', 'SA'";
}
}
}
}
}

//TODO add time and time zone? use moment to format?
var start_date = new Date(begin);
var end_date = new Date(stop);
var now_date = new Date();

var start_year = ("0000" + (start_date.getFullYear().toString())).slice(-4);
var start_month = ("00" + ((start_date.getMonth() + 1).toString())).slice(-2);
var start_day = ("00" + ((start_date.getDate()).toString())).slice(-2);
var start_hours = ("00" + (start_date.getHours().toString())).slice(-2);
var start_minutes = ("00" + (start_date.getMinutes().toString())).slice(-2);
var start_seconds = ("00" + (start_date.getSeconds().toString())).slice(-2);

var end_year = ("0000" + (end_date.getFullYear().toString())).slice(-4);
var end_month = ("00" + ((end_date.getMonth() + 1).toString())).slice(-2);
var end_day = ("00" + ((end_date.getDate()).toString())).slice(-2);
var end_hours = ("00" + (end_date.getHours().toString())).slice(-2);
var end_minutes = ("00" + (end_date.getMinutes().toString())).slice(-2);
var end_seconds = ("00" + (end_date.getSeconds().toString())).slice(-2);

var now_year = ("0000" + (now_date.getFullYear().toString())).slice(-4);
var now_month = ("00" + ((now_date.getMonth() + 1).toString())).slice(-2);
var now_day = ("00" + ((now_date.getDate()).toString())).slice(-2);
var now_hours = ("00" + (now_date.getHours().toString())).slice(-2);
var now_minutes = ("00" + (now_date.getMinutes().toString())).slice(-2);
var now_seconds = ("00" + (now_date.getSeconds().toString())).slice(-2);

// Since some calendars don't add 0 second events, we need to remove time if there is none...
var start_time = '';
var end_time = '';
if (start_hours + start_minutes + start_seconds + end_hours + end_minutes + end_seconds != 0) {
start_time = 'T' + start_hours + start_minutes + start_seconds;
end_time = 'T' + end_hours + end_minutes + end_seconds;
}
var now_time = 'T' + now_hours + now_minutes + now_seconds;

var start = start_year + start_month + start_day + start_time;
var end = end_year + end_month + end_day + end_time;
var now = now_year + now_month + now_day + now_time;

// recurrence rrule vars
var rruleString;
if (rrule) {
if (rrule.rrule) {
rruleString = rrule.rrule;
} else {
rruleString = 'rrule:FREQ=' + rrule.freq;

if (rrule.until) {
var uDate = new Date(Date.parse(rrule.until)).toISOString();
rruleString += ';UNTIL=' + uDate.substring(0, uDate.length - 13).replace(/[-]/g, '') + '000000Z';
}

if (rrule.interval) {
rruleString += ';INTERVAL=' + rrule.interval;
}

if (rrule.count) {
rruleString += ';COUNT=' + rrule.count;
}

if (rrule.byday && rrule.byday.length > 0) {
rruleString += ';BYDAY=' + rrule.byday.join(',');
}
}
}

var stamp = new Date().toISOString();

var calendarEvent = [
'BEGIN:VEVENT',
'UID:' + calendarEvents.length + "@" + uidDomain,
'CLASS:PUBLIC',
'DESCRIPTION:' + description,
'DTSTAMP;VALUE=DATE-TIME:' + now,
'DTSTART;VALUE=DATE-TIME:' + start,
'DTEND;VALUE=DATE-TIME:' + end,
'LOCATION:' + location,
'SUMMARY;LANGUAGE=en-us:' + subject,
'TRANSP:TRANSPARENT',
'END:VEVENT'
];

if (rruleString) {
calendarEvent.splice(4, 0, rruleString);
}

calendarEvent = calendarEvent.join(SEPARATOR);

calendarEvents.push(calendarEvent);
return calendarEvent;
},

/**
* Download calendar using the saveAs function from filesave.js
* @param {string} filename Filename
* @param {string} ext Extention
*/
'download': function(filename, ext) {

if (calendarEvents.length < 1) {
return false;
}

ext = (typeof ext !== 'undefined') ? ext : '.ics';
filename = (typeof filename !== 'undefined') ? filename : 'calendar';
var calendar = calendarStart + SEPARATOR + calendarEvents.join(SEPARATOR) + calendarEnd;

var blob;
if (navigator.userAgent.indexOf('MSIE 10') === -1) { // chrome or firefox
blob = new Blob([calendar]);
} else { // ie
var bb = new BlobBuilder();
bb.append(calendar);
blob = bb.getBlob('text/x-vCalendar;charset=' + document.characterSet);
}
saveAs.saveAs(blob, filename + ext);
return calendar;
},

/**
* Build and return the ical contents
*/
'build': function() {
if (calendarEvents.length < 1) {
return false;
}

var calendar = calendarStart + SEPARATOR + calendarEvents.join(SEPARATOR) + calendarEnd;

return calendar;
}
};
};
return ics;

})();
if (typeof module !== 'undefined' && typeof module.exports !== 'undefined')
module.exports = ics;
else
window.ics= ics;
})();