Created
June 9, 2018 10:33
-
-
Save tuscen/12e767d84af15081b33f533a87e2d785 to your computer and use it in GitHub Desktop.
In-browser Telegram bot
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import { HttpPoller } from './httpPoller.js'; | |
| function last(array) { | |
| return array[array.length - 1]; | |
| } | |
| const token = "BOT_TOKEN"; | |
| const url = `https://api.telegram.org/bot${token}/getUpdates`; | |
| const poller = new HttpPoller(url, "POST"); | |
| poller.start(data => { | |
| const apiResponse = JSON.parse(data.response); | |
| console.log(apiResponse); | |
| const updates = apiResponse.result; | |
| if (updates.length > 0) { | |
| data.state.body = { | |
| offset: last(updates).update_id + 1 | |
| }; | |
| } | |
| }); |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| export class HttpPoller { | |
| constructor(url, method, timeout = 30) { | |
| this.url = url; | |
| this.method = method; | |
| this.timeout = timeout; | |
| this.state = HttpPoller.STOPPED; | |
| } | |
| set timeout(value) { | |
| this._timeout = value * 1000; | |
| } | |
| get timeout() { | |
| return this._timeout; | |
| } | |
| withBody() { | |
| return ["POST", "PUT"].includes(this.method); | |
| } | |
| start(callback, body = null) { | |
| if (this.state == HttpPoller.STARTED) { | |
| return; | |
| } | |
| const pollerState = { | |
| body: body | |
| }; | |
| const poller = (callback, pollerState) => { | |
| if (this.state == HttpPoller.STOPPED) { | |
| return; | |
| } | |
| const xhr = new XMLHttpRequest(); | |
| xhr.open(this.method, this.url, true); | |
| xhr.timeout = this.timeout; | |
| xhr.onreadystatechange = (e) => { | |
| if (this.state == HttpPoller.STOPPED) { | |
| e.target.abort(); | |
| return; | |
| } | |
| if(e.target.readyState == XMLHttpRequest.DONE) { | |
| callback({ | |
| response: e.target.response, | |
| state: pollerState | |
| }); | |
| setTimeout(() => poller(callback, pollerState)); | |
| } | |
| }; | |
| xhr.onabort = () => this.stop(); | |
| xhr.onerror = () => this.stop(); | |
| xhr.ontimeout = () => setTimeout(() => poller(callback, pollerState)); | |
| xhr.setRequestHeader("Content-Type", "application/json"); | |
| if (this.withBody() && pollerState.body) { | |
| xhr.send(JSON.stringify(pollerState.body)); | |
| } else { | |
| xhr.send(); | |
| } | |
| }; | |
| this.state = HttpPoller.STARTED; | |
| setTimeout(() => poller(callback, pollerState)); | |
| } | |
| stop() { | |
| this.state = HttpPoller.STOPPED; | |
| } | |
| } | |
| HttpPoller.STOPPED = 0; | |
| HttpPoller.STARTED = 1; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment