通知与日历

https://d1.vish-app.ru/api/v1/calendar/schedule.ics?group=ШАД-111

// The group's calendar feed and its recent changes; no key needed.
const API = process.env.VISH_API ?? 'https://d1.vish-app.ru/api/v1'
const GROUP = process.env.VISH_GROUP ?? 'ШАД-111'

const groups = await (await fetch(`${API}/groups?search=${encodeURIComponent(GROUP)}&all=1`)).json()
const group = groups.list.find((item) => item.name === GROUP)
if (!group) throw new Error(`group ${GROUP} not found`)

const feed = await fetch(`${API}/calendar/schedule.ics?group=${encodeURIComponent(GROUP)}`)
const calendar = await feed.text()
if (!feed.ok || !feed.headers.get('content-type')?.startsWith('text/calendar') || !calendar.startsWith('BEGIN:VCALENDAR')) {
	throw new Error(`not a calendar: HTTP ${feed.status}`)
}
const uids = [...calendar.matchAll(/^UID:(.+)$/gmu)].map((match) => match[1].trim())
if (new Set(uids).size !== uids.length) throw new Error('duplicate UIDs')

const response = await fetch(`${API}/schedule/changes?groupId=${group.id}&period=weeks`)
if (!response.ok) throw new Error(`changes: HTTP ${response.status}`)
const changes = (await response.json()).list
if (!Array.isArray(changes) || changes.some((item) => !item.lessonId || !item.change || !item.createdAt)) {
	throw new Error('unexpected changes answer')
}

console.log(`${GROUP}: ${uids.length} events in the feed, ${changes.length} changes this week and next`)
for (const item of changes.slice(0, 5)) {
	console.log(`- ${item.createdAt.slice(0, 16)} ${item.change}: ${item.subject?.ru ?? item.lessonId} (${item.changedFields?.join(', ') ?? ''})`)
}