@barinbritva/add-to-calendar/dist/Generator/ICalendar.js

[](https://github.com/barinbritva/add-to-calendar/blob/master/package.json) [](https://gith

import { DateHelper } from '../Utils/DateHelper';
import { StringHelper } from '../Utils/StringHelper';
export const Methods = {
    Publish: 'PUBLISH',
    Request: 'REQUEST',
    Reply: 'REPLY',
    Add: 'ADD',
    Cancel: 'CANCEL'
};
export class ICalendar {
    constructor() {
        this.invitationMeta = {
            contentLanguage: 'EN',
            method: Methods.Publish
        };
    }
    configure(invitationMeta) {
        this.invitationMeta = Object.assign(Object.assign({}, this.invitationMeta), invitationMeta);
        return this;
    }
    createLink(event) {
        const eventData = this.convertEventToData(event);
        return `data:text/calendar;charset=utf8,${this.dataPiecesToContent(eventData, true)}`;
    }
    createFile(event) {
        const eventData = this.convertEventToData(event);
        return this.dataPiecesToContent(eventData);
    }
    convertEventToData(event) {
        const data = [
            {
                key: 'BEGIN',
                value: 'VCALENDAR'
            },
            {
                key: 'VERSION',
                value: '2.0'
            },
            {
                key: 'PRODID',
                value: '-//barinbritva//add-to-calendar//' + this.invitationMeta.contentLanguage
            },
            {
                key: 'CALSCALE',
                value: 'GREGORIAN'
            },
            {
                key: 'METHOD',
                value: this.invitationMeta.method
            },
            {
                key: 'BEGIN',
                value: 'VEVENT'
            },
            {
                key: 'UID',
                value: event.uid
            },
            {
                key: 'DTSTAMP',
                value: StringHelper.clearPunctuation(DateHelper.dateToDateTimeString(new Date()))
            },
            {
                key: 'DTSTART',
                value: StringHelper.clearPunctuation(event.getStartDateAsString())
            },
            {
                key: 'DTEND',
                value: StringHelper.clearPunctuation(event.getEndDateAsString())
            },
            {
                key: 'SUMMARY',
                value: this.escapeSpecialChars(event.title)
            },
            {
                key: 'DESCRIPTION',
                value: this.escapeSpecialChars(event.description)
            }
        ];
        if (event.location != null) {
            data.push({
                key: 'LOCATION',
                value: this.escapeSpecialChars(event.locationName)
            });
            if (event.locationCoordinates != null) {
                event.locationCoordinates;
                data.push({
                    key: 'GEO',
                    value: this.escapeSpecialChars(`${event.locationCoordinates.latitude};${event.locationCoordinates.longitude}`)
                });
            }
        }
        if (event.hasAttendees()) {
            event.attendees.forEach((attendee, index) => {
                var _a;
                const attendeeType = index === 0 ? 'ORGANIZER' : 'ATTENDEE';
                let attendeeEmail;
                let attendeeName;
                if (typeof attendee === 'string') {
                    attendeeEmail = attendee;
                    attendeeName = attendee;
                }
                else {
                    attendeeEmail = attendee[0];
                    attendeeName = (_a = attendee[1]) !== null && _a !== void 0 ? _a : attendee[0];
                }
                data.push({
                    key: `${attendeeType};CN="${attendeeName}"`,
                    value: this.escapeSpecialChars('mailto:' + attendeeEmail)
                });
            });
        }
        data.push({
            key: 'END',
            value: 'VEVENT'
        }, {
            key: 'END',
            value: 'VCALENDAR'
        });
        return data;
    }
    escapeSpecialChars(text) {
        if (text == null) {
            return text;
        }
        return text
            .replace(/,/gm, ',')
            .replace(/;/gm, ';')
            .replace(/\n/gm, '\\n')
            .replace(/(\\n)[\s\t]+/gm, '\\n');
    }
    dataPiecesToContent(data, encode = false) {
        let fileParts = [];
        for (const key in data) {
            const dataItem = data[key];
            if (dataItem.value == null) {
                continue;
            }
            fileParts.push(`${encode ? encodeURIComponent(dataItem.key) : dataItem.key}` +
                ':' +
                `${encode ? encodeURIComponent(dataItem.value) : dataItem.value}`);
        }
        return fileParts.join('\n');
    }
}