feat: add asyncapi events scheduling automation

.github/workflows/cancel-event.yml

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+name: Cancel event when issue was closed before it took place
+
+on:
+  issues:
+    types:
+      - closed
+
+jobs:
+
+  cancel_event:
+    env:
+      CALENDAR_ID: ${{ secrets.CALENDAR_ID }}
+      CALENDAR_SERVICE_ACCOUNT: ${{ secrets.CALENDAR_SERVICE_ACCOUNT }}
+    name: Remove event from calendar
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: 16
+          cache: 'npm'
+          cache-dependency-path: '**/package-lock.json'
+      - name: Install deps
+        run: npm install
+        working-directory: ./.github/workflows/create-event-helpers
+      - name: Remove Google Calendar entry
+        uses: actions/github-script@v4
+        with:
+          script: |
+            const { deleteEvent } = require('./.github/workflows/create-event-helpers/calendar/index.js');
+            deleteEvent('${{ github.event.issue.number }}', '${{ github.event.issue.closed_at }}');

.github/workflows/create-event-ad-hoc.yml

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+name: Schedule Ad Hoc Meeting
+
+on:
+  workflow_dispatch:
+    inputs:
+      time:
+        description: 'Info about meeting hour in UTC time zone, like: 08 or 16. No PM or AM versions.'
+        required: true
+      date:
+        description: 'Date in a form like: 2022-04-05 where 04 is a month and 05 is a day number.'
+        required: true
+      name:
+        description: 'Provide short title for the meeting.'
+        required: true
+      desc:
+        description: 'Provide description that explains the purpose of the meeting'
+        required: true
+
+jobs:
+
+  setup-ad-hoc:
+    uses: ./.github/workflows/create-event-workflow-reusable.yml
+    with:
+      time: ${{ github.event.inputs.time }}
+      date: ${{ github.event.inputs.date }}
+      meeting_name: ${{ github.event.inputs.name }}
+      meeting_desc: ${{ github.event.inputs.desc }}
+      host: lpgornicki@gmail.com
+      alternative_host: fmvilas@gmail.com
+      issue_template_path: .github/workflows/create-event-helpers/issues_templates/ad-hoc.md
+      create_zoom: true
+    secrets:
+      GH_TOKEN: ${{ secrets.GH_TOKEN }}
+      ZOOM_API_KEY: ${{ secrets.ZOOM_API_KEY }}
+      ZOOM_API_SECRET: ${{ secrets.ZOOM_API_SECRET }}
+      STREAM_URL: ${{ secrets.STREAM_URL }}
+      STREAM_KEY: ${{ secrets.STREAM_KEY }}
+      CALENDAR_ID: ${{ secrets.CALENDAR_ID }}
+      CALENDAR_SERVICE_ACCOUNT: ${{ secrets.CALENDAR_SERVICE_ACCOUNT }}

.github/workflows/create-event-community-meeting.yml

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+name: Schedule Community Meeting
+
+on:
+  workflow_dispatch:
+    inputs:
+      time:
+        description: 'Info about meeting hour in UTC time zone, like: 08 or 16. No PM or AM versions.'
+        required: true
+      date:
+        description: 'Date in a form like: 2022-04-05 where 04 is a month and 05 is a day number.'
+        required: true
+
+jobs:
+
+  setup-community-meeting:
+    uses: ./.github/workflows/create-event-workflow-reusable.yml
+    with:
+      time: ${{ github.event.inputs.time }}
+      date: ${{ github.event.inputs.date }}
+      meeting_name: Community Meeting
+      meeting_desc: This is a community meeting to regularly talk in open about important topics around AsyncAPI Initiative.
+      host: lpgornicki@gmail.com
+      alternative_host: fmvilas@gmail.com
+      issue_template_path: .github/workflows/create-event-helpers/issues_templates/community.md
+      create_zoom: true
+    secrets:
+      GH_TOKEN: ${{ secrets.GH_TOKEN }}
+      ZOOM_API_KEY: ${{ secrets.ZOOM_API_KEY }}
+      ZOOM_API_SECRET: ${{ secrets.ZOOM_API_SECRET }}
+      STREAM_URL: ${{ secrets.STREAM_URL }}
+      STREAM_KEY: ${{ secrets.STREAM_KEY }}
+      CALENDAR_ID: ${{ secrets.CALENDAR_ID }}
+      CALENDAR_SERVICE_ACCOUNT: ${{ secrets.CALENDAR_SERVICE_ACCOUNT }}

.github/workflows/create-event-helpers/calendar/index.js

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+const { google } = require('googleapis')
+const core = require('@actions/core');
+
+module.exports = { addEvent, deleteEvent, listEvents }
+
+const auth = new google.auth.GoogleAuth({
+    scopes: ['https://www.googleapis.com/auth/calendar'],
+    credentials: JSON.parse(process.env.CALENDAR_SERVICE_ACCOUNT)
+});
+
+const calendar = google.calendar({ version: 'v3', auth });
+
+/**
+ * Adds new single-occuring event
+ * All events are being linked to their GitHub issues
+ * @param {String} zoomUrl Zoom url of the meeting
+ * @param {String} startDate ex. 2022-04-05
+ * @param {String} startTime ex. 08 or 16
+ * @param {Number} issueNumber GitHub issue number of the event, to find event later
+ */
+async function addEvent(zoomUrl, startDate, startTime, issueNumber) {
+
+    const communityIssuesUrl = 'https://github.com/asyncapi/community/issues/';
+    const title = process.env.MEETING_NAME;
+    const suffix = process.env.MEETING_NAME_SUFFIX;
+    const description = process.env.MEETING_DESC;
+    const guest = process.env.GUEST;
+    const summary = suffix ? `${title} ${suffix}` : title;
+
+    try {
+
+        //helper to create end time which is always 1h later
+        const getEndTime = (startTime) => {
+            const time = Number(startTime);
+            if (time < 10) return '0' + (time + 1)
+
+            return (time + 1) + ''
+        }
+
+        //helper to build meeting description
+        //there is a use case that meeting has no connection over zoom available as it is pure live stream
+        const getDescription = (description, communityIssuesUrl, issueNumber, zoomUrl, guest) => {
+
+            const zoomDetails = zoomUrl && `<b>Zoom</b>: <a href="${zoomUrl}">Meeting Link</a>`;
+            const agendaDetails = `<b>Agenda and more options to join the meeting</b>: <a href="${communityIssuesUrl}${issueNumber}">GitHub Issue Link.</a>`;
+            const guestDetails = guest ? `<b>Special guest</b>: ${ guest }` : '';
+            return `${ description }<br><br>${ zoomDetails }<br><br>${ agendaDetails }<br><br>${ guestDetails }`
+        };
+
+        await calendar.events.insert({
+            calendarId: process.env.CALENDAR_ID,
+            requestBody: {
+                summary,
+                description: getDescription(description, communityIssuesUrl, issueNumber, zoomUrl, guest),
+                start: {
+                    dateTime: `${ startDate }T${ startTime }:00:00Z`
+                },
+                end: {
+                    dateTime: `${ startDate }T${ getEndTime(startTime) }:00:00Z`
+                },
+                location: zoomUrl,
+                extendedProperties: {
+                    private: {
+                        'ISSUE_ID': `${issueNumber}`
+                    }
+                }
+            }
+        })
+
+        core.info('Event created')
+    } catch (error) {
+        core.setFailed(`Faild creating event in Google Calendar: ${ JSON.stringify(error) }`)
+    }
+}
+
+/**
+ * Deletes a single-occuring event from issue number
+ * @param {Number} issueNumber GitHub issue number of the meeting to delete
+ * @param {Number} closeDate Date when issue was closed
+ */
+async function deleteEvent(issueNumber, closeDate) {
+    let events
+
+    try {
+        events = (await calendar.events.list({
+            calendarId: process.env.CALENDAR_ID,
+            privateExtendedProperty: `ISSUE_ID=${issueNumber}`
+        })).data;
+    } catch (error) {
+        return core.setFailed(`Failed to fetch events for issue numer ${ issueNumber }: ${ JSON.stringify(error) }`)
+    }
+
+    const eventsItems = events.items;
+
+    if (eventsItems.length > 0) {
+
+        const meetingId = eventsItems[0].id;
+        const eventStartDate = new Date(eventsItems[0].start.dateTime);
+        const issueCloseDate = new Date(closeDate);
+
+        try {
+            //in case of issue was closed after the event, we do not remove it from calendar
+            if (eventStartDate.getTime() < issueCloseDate.getTime()) return core.info('Event not removed as related issue was closed after the event took place.');
+
+            await calendar.events.delete({
+                calendarId: process.env.CALENDAR_ID,
+                eventId: meetingId
+            })
+
+            core.info('Event deleted from calendar')
+        } catch (error) {
+            core.setFailed(`Failed to delete event for issue number ${ issueNumber }: ${ JSON.stringify(error) }`)
+        }
+    } else {
+        core.info('Event not found in calendar')
+    }
+}
+
+/**
+ * Lists all events including single-occuring and recurring
+ */
+async function listEvents() {
+
+    let eventsItems;
+
+    try {
+        //this runs always on friday midnight
+        const currentTime = new Date(Date.now()).toISOString();
+        //we check moday
+        const timeIn2Days = new Date(Date.parse(currentTime) + 2 * 24 * 60 * 60 * 1000).toISOString();
+        //till friday
+        const timeIn8Days = new Date(Date.parse(currentTime) + 8 * 24 * 60 * 60 * 1000).toISOString();
+
+        const eventsList = await calendar.events.list({
+            calendarId: process.env.CALENDAR_ID,
+            timeMax: timeIn8Days,
+            timeMin: timeIn2Days
+        })
+
+        eventsItems = eventsList.data.items.map((e) => {
+            return {
+                title: e.summary,
+                issueId: e.extendedProperties.private.ISSUE_ID,
+                date: new Date(e.start.dateTime).toUTCString()
+            }
+        })
+
+        core.info(`List of all events: ${ JSON.stringify(eventsList.data, null, 4) }`)
+    } catch (error) {
+        return core.setFailed(`Faild fetching events from Google Calendar API: ${ JSON.stringify(error) }`)
+    }
+
+    return eventsItems;
+
+}

.github/workflows/create-event-helpers/issues_templates/ad-hoc.md

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+---
+title: "{{ env.MEETING_NAME }}, {{ env.FULL_DATE | date('H:mm [UTC] dddd MMMM Do YYYY') }}"
+---
+
+<table>
+<tr>
+<th>Meeting Info</th>
+<th>Details</th>
+</tr>
+<tr>
+<td>Purpose</td>
+<td>{{ env.MEETING_DESC }}</td>
+</tr>
+<tr>
+<td>Time</td>
+<td><strong>{{ env.FULL_DATE | date('H') }}:00 UTC</strong> | Translate to your time zone with the <a href="https://dateful.com/convert/coordinated-universal-time-utc?t={{ env.FULL_DATE | date('kk') }}&d={{ env.DATE_ONLY }}">time zone converter</a>.</td>
+</tr>
+<tr>
+<th>Meeting Place</th>
+<th>Link</th>
+</tr>
+<tr>
+<td>Zoom</td>
+<td><a href="{{ env.ZOOM_LINK }}">Join live</a>.</td>
+</tr>
+<tr>
+<td>YouTube</td>
+<td><a href="https://www.youtube.com/asyncapi">Watch live and interact through live chat</a>.</td>
+</tr>
+<tr>
+<td>Twitch</td>
+<td><a href="https://www.twitch.tv/asyncapi">Watch live</a>.</td>
+</tr>
+<tr>
+<td>Twitter</td>
+<td><a href="https://twitter.com/AsyncAPISpec">Watch live</a>.</td>
+</tr>
+<tr>
+<td>LinkedIn</td>
+<td><a href="https://www.linkedin.com/company/asyncapi">Watch live</a>.</td>
+</tr>
+<tr>
+<th>More Info</th>
+<th>Details</th>
+</tr>
+<tr>
+<td>Meeting Recordings</td>
+<td><a href="https://www.youtube.com/asyncapi">YouTube Playlist</a>.</td>
+</tr>
+<tr>
+<td>AsyncAPI Initiative Calendar</td>
+<td><a href="https://calendar.google.com/calendar/embed?src=c_q9tseiglomdsj6njuhvbpts11c%40group.calendar.google.com&ctz=UTC">Public URL</a>.</td>
+</tr>
+<tr>
+<td>iCal File</td>
+<td><a href="https://calendar.google.com/calendar/ical/c_q9tseiglomdsj6njuhvbpts11c%40group.calendar.google.com/public/basic.ics">Add to your calendar</a>.</td>
+</tr>
+<tr>
+<td>Newsletter</td>
+<td><a href="https://www.asyncapi.com/newsletter">Subscribe to get weekly updates on upcoming meetings</a>.</td>
+</tr>
+</table>
+
+
+## Agenda
+
+> Don't wait for the meeting to discuss topics that already have issues. Feel free to comment on them earlier.
+
+1. Q&A
+1. _Place for your topic_
+1. Q&A
+
+## Notes
+
+tbd