Initial commit

config.js

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+module.exports = {
+    nick: 'chessbot',
+    service: 'xmpp://domain.com',
+    username: 'user',
+    password: 'pass',
+    room: 'room@conference.domain.com'
+}

index.js

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+const { client, xml } = require('@xmpp/client'),
+    got = require('got'),
+    config = require('./config'),
+    ChessImageGenerator = require('chess-image-generator'),
+    jsChess = require('js-chess-engine'),
+    xmpp = client({
+        service: config.service,
+        username: config.username,
+        password: config.password
+    }),
+    sendMessage = async message => {
+        await xmpp.send(xml(
+            'message',
+            { type: 'groupchat', to: room },
+            xml('body', {}, message)
+        ))
+    },
+    room = config.room,
+    nick = config.nick,
+    game = new jsChess.Game(),
+    iaLevel = 3 // level 3 IA max deep
+
+let imageGenerator,
+    time
+
+xmpp.on('stanza', async stanza => {
+    if (stanza.is('message') && !stanza.getChild('delay')) {
+        const message = stanza.getChildText('body')
+        if (message && game.status && game.status.isFinished) {
+            sendMessage('Jaque mate. Juego terminado.')
+        } else if (message && game.status && game.status.checkMate) {
+            sendMessage('Jaque.')
+        } else if (message && message.split(' ').length === 3
+            && message.split(' ')[0] === '.move'
+            && message.split(' ')[1].match(/^[A-H1-8]{2}$/)
+            && message.split(' ')[2].match(/^[A-H1-8]{2}$/)) {
+            const msg = message.split(' ')
+            msg.shift()
+            game.move(msg[0], msg[1])
+            const d = Date.now()
+            game.aiMove(iaLevel)
+            time = Date.now() - d
+            imageGenerator = new ChessImageGenerator({
+                size: 720,
+                light: 'rgb(200, 200, 200)',
+                dark: '#333333',
+                style: 'merida'
+            })
+            await imageGenerator.loadFEN(game.exportFEN())
+            const buf = await imageGenerator.generateBuffer()
+            await xmpp.send(xml(
+                'iq',
+                {
+                    type: 'get',
+                    to: stanza.attrs.from.replace(/\/.*$/, '').split('@')[1],
+                    id: 'step_' + Math.floor(Math.random() * 100)
+                },
+                xml('request',
+                    {
+                        xmlns: 'urn:xmpp:http:upload:0',
+                        filename: 'chess.png',
+                        size: buf.byteLength,
+                        'content-type': 'image/png'
+                    }
+                )
+            )).catch(console.error)
+        }
+    } else if (stanza.is('iq') && stanza.attrs.type === 'result') {
+        const buf = await imageGenerator.generateBuffer()
+        if (imageGenerator && buf.byteLength > 0 && stanza.getChild('slot') && stanza.getChild('slot').getChild('put')) {
+            const req = await got.put(stanza.getChild('slot').getChild('put').attrs.url, {
+                body: buf
+            }).catch(console.error)
+            if (req && req.url) {
+                sendMessage('Su turno: ' + req.url + ' movimiento IA en ' + (time / 1000) + 's')
+            }
+        }
+    }
+})
+
+xmpp.on('online', async address => {
+    await xmpp.send(xml(
+        'presence',
+        { to: room + '/' + nick },
+        xml('x',
+            { xmlns: 'http://jabber.org/protocol/muc' }
+        )
+    )).catch(console.error)
+    console.log('Connected like: ' + address)
+    sendMessage('Comienza la partida: .move <origen> <destino>\nEj: .move B2 B3')
+})
+
+xmpp.on('error', console.error)
+
+xmpp.on('offline', () => {
+    console.log('Go to offline')
+})
+
+xmpp.start().catch(console.error)

package.json

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+{
+  "name": "chessbot-xmpp",
+  "version": "1.0.0",
+  "description": "Chess Bot MUC XMPP",
+  "main": "index.js",
+  "private": true,
+  "scripts": {
+    "start": "node index.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://git.manalejandro.com/ale/chessbot-xmpp"
+  },
+  "keywords": [
+    "bot",
+    "xmpp",
+    "muc",
+    "chess"
+  ],
+  "author": "ale",
+  "license": "MIT",
+  "dependencies": {
+    "@xmpp/client": "*",
+    "cheerio": "*",
+    "chess-image-generator": "*",
+    "got": "*",
+    "js-chess-engine": "*"
+  }
+}