Upload library in github

.gitignore

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+node_modules/

index.js

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+const express = require("express");
+
+
+class vk_event {
+	constructor(type, object, group_id, event_id, secret) {
+		this.type = type
+		this.object = object
+		this.group_id = group_id
+		this.event_id = event_id
+		this.secret = secret
+	}
+}
+
+
+class group {
+	constructor(id, return_str, secret_key) {
+		this.id = id;
+		this.return_str = return_str;
+		this.secret_key = secret_key;
+	}
+}
+
+
+function getUrl(host, port, ssl_protected = false) {
+	if (ssl_protected == true) {
+		if (port == 443) {
+			return `https://${host}`;
+		}
+		else return `https://${host}:${port}`;
+	}
+	else {
+		if (port == 80) {
+			return `http://${host}`;
+		}
+		else return `http://${host}:${port}`;
+	}
+}
+
+
+class VkEvent_handler {
+	constructor (eventFunction, check = () => {}) {
+		this.eventFunction = eventFunction;
+		this.check = check;
+	}
+}
+
+
+defaultHandler = new VkEvent_handler((group_obj, Event) => {
+	console.log('Needs code\n==========');
+	console.log(`Group: ${group_obj.id}, Event:\ntype: ${Event.type}\ngroup_id: ${Event.group_id}\nevent_id: ${Event.event_id}\nsecret: ${Event.secret}\nobject:`, Event.object);
+}, () => console.log('[WARNING] You not connect vk event handler: VkEvent_handler'));
+
+
+class server {
+	constructor(groups = [], _event = defaultHandler, host='localhost', port = 80, logger=false) {
+		this.host = host;
+		this.port = port;
+		this.groups = groups;
+		this.logger = Boolean(logger);
+		_event.check();
+		this._event = _event.eventFunction;
+
+		this.group_dict = new Object();
+
+		for (var index = 0; index < this.groups.length; ++index) {
+			var item = this.groups[index];
+			this.group_dict[item.id] = item;
+		}
+	}
+	
+	log (event) {
+		if (this.logger) console.log(event);
+	}
+
+	confirmation_secret (group_obj, Event, getTimeConfiramtor = (group_obj, Event) => true) {
+		// console.log(123);
+		if (Event.secret != group_obj.secret_key) {
+			return "<strong>Invalid secret key</strong>";
+		}
+		else if (Event.type == 'confirmation') {
+			return group_obj.return_str;
+		}
+		else {
+			if (
+				!getTimeConfiramtor(group_obj, Event)
+			) {
+				// console.log(123);
+				return "<b>Request timeouted</b>";
+			}
+			else {
+				setTimeout(async () => this._event(group_obj, Event), 10);
+				return 'ok';
+			}
+		}
+	}
+
+	start(callback = () => {}, print_serverInfo = console.log) {
+		let app = express();
+		app.use(express.json());
+
+		app.route('/:group_id').post(
+			async (req, res) => {
+				try {
+					var group_id = Number(req.params.group_id);
+					group_id = String(group_id);
+					var POST_DATA = req.body;
+					if (this.group_dict[group_id] !== undefined) {
+						var callback_event = new vk_event(
+							POST_DATA.type,
+							POST_DATA.object,
+							POST_DATA.group_id,
+							POST_DATA.event_id,
+							POST_DATA.secret
+						);
+						this.log(callback_event);
+						res.send(this.confirmation_secret(this.group_dict[group_id], callback_event));
+					}
+					else {
+						res.send('group_id failed');
+					}
+				}
+				catch (err) {
+					console.log(`Raised error: ${err.message}\n======================\n${err.stack}`);
+					res.status(500).send(`<b>Raised error: ${err.message}</b><br/>\n${err.stack}`);
+				}
+			}
+		).get(async (req, res) => { res.send('<strong>Invalid secret key</strong>') });
+
+		app.listen(this.port, this.host, (err) => {
+			if (err) {
+				throw err;
+			}
+			else {
+				print_serverInfo(`vk callback server listen in ${getUrl(this.host, this.port)}`);
+				callback();
+			}
+		});
+		
+		this.server = app;
+	}
+}
+
+
+module.exports = {
+	VkEvent: vk_event,
+	Group: group,
+	Server: server,
+	VkEventHandler: VkEvent_handler
+};

package.json

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+{
+  "dependencies": {
+    "express": "^4.18.2"
+  }
+}

readme.md

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+# Vk Callback Lib
+Documentation it's soo important, but.. I'm lazy :) Later, ok?)