CIST Crawler

A TypeScript library for crawling schedule data from NURE (National University of Radio Electronics) CIST system.

Features

• 🏫 Fetch groups, teachers, auditories, and schedules
• 🔄 Automatic server failover for high availability
• 🛠️ Robust JSON parsing with automatic error correction
• 📝 Full TypeScript support with comprehensive type definitions
• ⚡ Modern ES modules with tree-shaking support
• 🔧 Configurable timeout and server settings

Installation

# npm
npm install @mindenit/cist-crawler

# yarn
yarn add @mindenit/cist-crawler

# pnpm
pnpm add @mindenit/cist-crawler

Quick Start

import { CistCrawler } from '@mindenit/cist-crawler'

const crawler = new CistCrawler()

// Get all groups
const groups = await crawler.getGroups()
console.log(groups)

// Get all teachers
const teachers = await crawler.getTeachers()
console.log(teachers)

// Get all auditories
const auditories = await crawler.getAuditories()
console.log(auditories)

// Get schedule for a group
const groupSchedule = await crawler.getSchedule(1, 3547345)
console.log(groupSchedule)

Configuration

You can configure the crawler with custom servers and timeout settings:

import { CistCrawler } from '@mindenit/cist-crawler'

const crawler = new CistCrawler({
	servers: ['cist.nure.ua', 'cist2.nure.ua'], // Custom server list
	timeout: 10000, // 10 second timeout
})

API Reference

Constructor

new CistCrawler(config?: CistCrawlerConfig)

CistCrawlerConfig

Property	Type	Default	Description
servers	string[]	['cist.nure.ua', 'cist2.nure.ua']	List of CIST servers to use
timeout	number	5000	Request timeout in milliseconds

Methods

getGroups()

Retrieves all available groups from the CIST system.

const groups = await crawler.getGroups()

Returns: Promise<Response> - Object containing groups array and university info

getTeachers()

Retrieves all available teachers from the CIST system.

const teachers = await crawler.getTeachers()

Returns: Promise<Response> - Object containing teachers array and university info

getAuditories()

Retrieves all available auditories (classrooms) from the CIST system.

const auditories = await crawler.getAuditories()

Returns: Promise<Response> - Object containing buildings and auditories info

getSchedule(type, id, timeFrom?, timeTo?)

Retrieves schedule for a specific group or teacher.

// Get group schedule
const groupSchedule = await crawler.getSchedule(1, 3547345)

// Get teacher schedule
const teacherSchedule = await crawler.getSchedule(2, 123456)

// Get schedule for specific time period
const schedule = await crawler.getSchedule(
	1,
	3547345,
	new Date('2024-01-01'),
	new Date('2024-12-31'),
)

Parameters:

• type: 1 | 2 - Type of schedule (1 for group, 2 for teacher)
• id: number - ID of the group or teacher
• timeFrom: Date (optional) - Start date for schedule
• timeTo: Date (optional) - End date for schedule

Returns: Promise<Response> - Object containing events array and related info

Type Definitions

The library includes comprehensive TypeScript definitions for all data structures:

Core Types

interface Group {
	id: number
	name: string
}

interface Teacher {
	id: number
	full_name: string
	short_name: string
}

interface Event {
	subject_id: number
	start_time: number
	end_time: number
	type: number
	number_pair: number
	auditory: string
	teachers: number[]
	groups: number[]
}

interface Response {
	university?: University
	'time-zone'?: string
	events?: Event[]
	groups?: Group[]
	teachers?: Teacher[]
	subjects?: Subject[]
	types?: Type[]
}

For complete type definitions, see the exported types from the package.

Error Handling

The library includes custom error handling with the CistCrawlerError class:

import { CistCrawler, CistCrawlerError } from '@mindenit/cist-crawler'

try {
	const crawler = new CistCrawler()
	const groups = await crawler.getGroups()
} catch (error) {
	if (error instanceof CistCrawlerError) {
		console.error(`CIST Error ${error.status}: ${error.message}`)
	} else {
		console.error('Unknown error:', error)
	}
}

Server Failover

The library automatically handles server failover. If the primary server is unavailable, it will try the next server in the list. This ensures high availability even when some CIST servers are down.

JSON Parsing

The library includes robust JSON parsing that can handle malformed JSON responses from the CIST API. It automatically applies various fixes to ensure reliable data parsing.

Examples

Getting Group Schedule for Current Semester

import { CistCrawler } from '@mindenit/cist-crawler'

const crawler = new CistCrawler()

async function getCurrentSemesterSchedule(groupId: number) {
	const now = new Date()
	const semesterStart = new Date(
		now.getFullYear(),
		now.getMonth() < 7 ? 1 : 8,
		1,
	)
	const semesterEnd = new Date(
		now.getFullYear(),
		now.getMonth() < 7 ? 6 : 12,
		31,
	)

	const schedule = await crawler.getSchedule(
		1,
		groupId,
		semesterStart,
		semesterEnd,
	)
	return schedule
}

// Usage
const schedule = await getCurrentSemesterSchedule(3547345)
console.log(schedule.events)

Requirements

• Node.js >= 22.x
• TypeScript support (optional but recommended)

License

GPL-3.0-only

Authors

• Kyrylo Savieliev
• Roman Trashutin

Contributing

This project is part of the Mindenit ecosystem. For more information on contributing, please see the Contributing Guide