Added last update, cache strategy, telegram fail notifications, teachers photos

src/app/agregator/schedule.ts

@@ -4,6 +4,7 @@ import contentTypeParser from 'content-type'
 // import { parse } from 'node-html-parser'
 import { JSDOM } from 'jsdom'
 import { content as mockContent } from './mock'
+import { reportParserError } from '@/app/logger'
 
 // ПС-7: 146
 export async function getSchedule(groupID: number, groupName: string): Promise<Day[]> {
@@ -17,11 +18,13 @@ export async function getSchedule(groupID: number, groupName: string): Promise<D
       return parsePage(root, groupName)
     } catch(e) {
       console.error('Error while parsing lk.ks.psuti.ru')
+      reportParserError(new Date().toISOString(), 'Не удалось сделать парсинг для группы', groupName)
       throw e
     }
   } else {
     console.error(page.status, contentType)
     console.error(content.length > 500 ? content.slice(0, 500 - 3) + '...' : content)
+    reportParserError(new Date().toISOString(), 'Не удалось получить страницу для группы', groupName)
     throw new Error('Error while fetching lk.ks.psuti.ru')
   }
 }

src/app/logger.ts

@@ -0,0 +1,18 @@
+import TelegramBot from 'node-telegram-bot-api'
+
+const token = process.env.PARSING_FAILURE_NOTIFICATIONS_TELEGRAM_BOTAPI_TOKEN
+const ownerID = process.env.PARSING_FAILURE_NOTIFICATIONS_TELEGRAM_CHAT_ID
+
+let bot: TelegramBot
+if (!token || !ownerID) {
+  console.warn('Telegram Token is not specified. This means you won\'t get any notifications about parsing failures.')
+} else {
+  bot = new TelegramBot(token, { polling: false })
+}
+
+
+export async function reportParserError(...text: string[]) {
+  if (!token || !ownerID) return
+
+  await bot.sendMessage(ownerID, text.join(' '))
+}