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| 1 | +#!/usr/bin/env node |
| 2 | + |
| 3 | +import { writeFile } from "node:fs/promises" |
| 4 | +import { type } from "arktype" |
| 5 | + |
| 6 | +const CALENDAR_ID = |
| 7 | + "linuxfoundation.org_ik79t9uuj2p32i3r203dgv5mo8@group.calendar.google.com" |
| 8 | +const API_KEY = process.env.GOOGLE_CALENDAR_API_KEY |
| 9 | +const OUTPUT_FILE = new URL("./upcoming-events.ndjson", import.meta.url) |
| 10 | +const MAX_RESULTS = 25 |
| 11 | +const DATETIME_REGEX = |
| 12 | + /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}(?::\d{2})?(?:\.\d+)?(?:Z|[+-]\d{2}:\d{2})?$/ |
| 13 | + |
| 14 | +const Instant = type({ |
| 15 | + "dateTime?": "string", |
| 16 | + "date?": "string", |
| 17 | + "timeZone?": "string", |
| 18 | +}) |
| 19 | + |
| 20 | +const Event = type({ |
| 21 | + id: "string", |
| 22 | + "status?": "string", |
| 23 | + "summary?": "string", |
| 24 | + "location?": "string", |
| 25 | + "description?": "string", |
| 26 | + start: Instant, |
| 27 | + end: Instant, |
| 28 | + htmlLink: "string", |
| 29 | + updated: "string", |
| 30 | +}) |
| 31 | + |
| 32 | +const responseSchema = type({ |
| 33 | + items: Event.array(), |
| 34 | +}) |
| 35 | + |
| 36 | +const WorkingGroupMeetingSchema = type({ |
| 37 | + id: "string", |
| 38 | + title: "string", |
| 39 | + "description?": "string", |
| 40 | + "location?": "string", |
| 41 | + start: Instant, |
| 42 | + end: Instant, |
| 43 | + htmlLink: "string", |
| 44 | + updated: "string", |
| 45 | + calendarId: "string", |
| 46 | +}) |
| 47 | + |
| 48 | +type CalendarEvent = typeof Event.infer |
| 49 | +export type WorkingGroupMeeting = typeof WorkingGroupMeetingSchema.infer |
| 50 | + |
| 51 | +async function main() { |
| 52 | + if (!API_KEY) { |
| 53 | + console.error("GOOGLE_CALENDAR_API_KEY is not set") |
| 54 | + process.exit(1) |
| 55 | + } |
| 56 | + |
| 57 | + const timeMin = new Date().toISOString() |
| 58 | + const searchParams = new URLSearchParams({ |
| 59 | + key: API_KEY, |
| 60 | + timeMin, |
| 61 | + singleEvents: "true", |
| 62 | + orderBy: "startTime", |
| 63 | + maxResults: String(MAX_RESULTS), |
| 64 | + }) |
| 65 | + |
| 66 | + const endpoint = new URL( |
| 67 | + `${encodeURIComponent(CALENDAR_ID)}/events?${searchParams}`, |
| 68 | + "https://www.googleapis.com/calendar/v3/calendars/", |
| 69 | + ) |
| 70 | + |
| 71 | + console.log(`\nFetching events for calendar: ${CALENDAR_ID}`) |
| 72 | + console.log(`Filtering from: ${timeMin}`) |
| 73 | + |
| 74 | + const response = await fetch(endpoint) |
| 75 | + const body = await response.json() |
| 76 | + if (!response.ok) { |
| 77 | + const errorDetails = body.error?.message || response.statusText |
| 78 | + throw new Error( |
| 79 | + `Calendar API request failed: ${response.status} ${errorDetails}`, |
| 80 | + ) |
| 81 | + } |
| 82 | + |
| 83 | + const payload = responseSchema.assert(body) |
| 84 | + const meetings = payload.items |
| 85 | + .filter(event => event.status !== "cancelled") |
| 86 | + .map(toWorkingGroupMeeting) |
| 87 | + .sort((a, b) => { |
| 88 | + const aStart = a.start.dateTime ?? a.start.date ?? "" |
| 89 | + const bStart = b.start.dateTime ?? b.start.date ?? "" |
| 90 | + return aStart.localeCompare(bStart) |
| 91 | + }) |
| 92 | + |
| 93 | + const ndjson = meetings.map(event => JSON.stringify(event)).join("\n") |
| 94 | + const content = meetings.length > 0 ? `${ndjson}\n` : "" |
| 95 | + await writeFile(OUTPUT_FILE, content, "utf8") |
| 96 | + |
| 97 | + console.log(`Saved ${meetings.length} event(s) to ${OUTPUT_FILE.pathname}`) |
| 98 | +} |
| 99 | + |
| 100 | +function toWorkingGroupMeeting(event: CalendarEvent): WorkingGroupMeeting { |
| 101 | + return WorkingGroupMeetingSchema.assert({ |
| 102 | + id: event.id, |
| 103 | + title: event.summary || "Untitled working group meeting", |
| 104 | + ...(event.description && { description: event.description }), |
| 105 | + ...(event.location && { location: event.location }), |
| 106 | + start: event.start, |
| 107 | + end: event.end, |
| 108 | + htmlLink: assertUrl(event.htmlLink, "event.htmlLink"), |
| 109 | + updated: assertDateTime(event.updated, "event.updated"), |
| 110 | + calendarId: CALENDAR_ID, |
| 111 | + }) |
| 112 | +} |
| 113 | + |
| 114 | +function assertDateTime(value: string, label: string) { |
| 115 | + if (!DATETIME_REGEX.test(value)) { |
| 116 | + throw new Error( |
| 117 | + `Invalid ${label}: expected YYYY-MM-DDThh:mm:ssZ or offset, received ${value}`, |
| 118 | + ) |
| 119 | + } |
| 120 | + return value |
| 121 | +} |
| 122 | + |
| 123 | +function assertUrl(value: string, label: string) { |
| 124 | + try { |
| 125 | + new URL(value) |
| 126 | + return value |
| 127 | + } catch { |
| 128 | + throw new Error(`Invalid ${label}: received ${value}`) |
| 129 | + } |
| 130 | +} |
| 131 | + |
| 132 | +try { |
| 133 | + await main() |
| 134 | +} catch (error: unknown) { |
| 135 | + console.error(error) |
| 136 | + process.exit(1) |
| 137 | +} |
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