node-telegram-api/lib/index.js
2015-06-26 21:50:54 +04:30

155 lines
3.4 KiB
JavaScript

import API from './api';
import * as _ from './utils';
import {EventEmitter} from 'events';
const DEFAULTS = {
update: {
offset: 0,
timeout: 0.5,
limit: 100
}
};
export default class Bot {
constructor(options = {update: {}}) {
if (!options.token) {
throw new Error('Token cannot be empty');
}
this.token = options.token;
this.update = Object.assign(options.update || {}, DEFAULTS.update);
this.api = new API(this.token);
// EventEmitter
this._events = {};
}
start() {
(function poll() {
this.api.getUpdates(this.update).then(response => {
setTimeout(poll.bind(this), this.update.timeout * 1000);
const result = response.result;
if (!result.length) {
return;
}
if (!this.update.offset) {
const updateId = result[result.length - 1].update_id;
this.update.offset = updateId;
}
if (this.update) {
this.update.offset += 1;
}
this.emit('update', response.result);
result.forEach(res => {
const text = res.message.text;
if (text.indexOf('/') === 0) {
this.emit('command:' + text.slice(1), res);
} else {
this.emit(text, res);
}
});
});
}.bind(this)());
}
command(cmd, listener) {
return this.on(`command:${cmd}`, listener);
}
message(chat, text, options) {
return new Promise(resolve => {
console.log(this.keyboard);
this.api.sendMessage(Object.assign({
chat_id: chat,
text,
reply_markup: this.keyboard
}, options));
if (JSON.parse(this.keyboard).one_time_keyboard) {
this.keyboard = '';
}
this.on('update', function listener(result) {
const update = result.find(({message}) => {
return message.chat.id === chat;
});
if (update) {
resolve(update);
this.removeListener('update', listener);
}
});
});
}
askQuestion(chat, title, answers = []) {
const text = title + '\n\n' + answers.reduce((a, b, i) => {
return a + `${i}. ${b}\n`;
}, '');
return new Promise((resolve, reject) => {
const rows = [answers];
this.keyboard(rows, false, true).force()
.message(chat, text).then(update => {
const message = update.message;
let answer;
if (_.isNumber(message.text)) {
answer = answers[+message.text];
} else {
answer = answers.find(a => a === message.text);
}
if (answer) {
resolve(answer, update);
} else {
reject(update);
}
});
});
}
keyboard(rows, resize = false, oneTime = false, selective) {
this.keyboard = JSON.stringify({
keyboard: rows,
resize_keyboard: resize,
one_time_keyboard: oneTime,
selective
});
return this;
}
hideKeyboard(selective) {
this.keyboard = JSON.stringify({
hide_keyboard: true,
selective
});
return this;
}
force(enable = true, selective) {
const keyboard = JSON.parse(this.keyboard);
keyboard.force_reply = enable;
keyboard.selective = selective;
this.keyboard = JSON.stringify(keyboard);
return this;
}
wait(miliseconds) {
const self = this;
return function(resolve) {
setTimeout(resolve.bind(self), miliseconds);
};
}
}
Bot.prototype = Object.assign(Bot.prototype, EventEmitter.prototype);