Initial version

.env.sample

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+BOT_TOKEN=insert-bot-token
+CHAT_ID=insert-chat-id
+REDIS_CHANNEL=NotificamBot

.gitignore

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+node_modules
+.env

README.md

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-# NotificamBot
+# NotificamBot
+
+Telegram bot to reiceve notification.
+
+Notificambot reads notifications from a queue (pub/sub on redis).
+
+
+
+## Configuration 
+1. Create telegram bot with **@botFater**.
+2. Clone this repository.
+3. Start a redis instance on localhost.
+4. Install dependencies with `npm install`.
+5. Configure env file (and rename from `env.sampe` to `.env`).
+6. Launch with `node src/server.js`
+
+
+You can configure events into `src/template.js`.
+
+## Test 
+
+You can perform a test with command: `node pub-redis-example.js`

package.json

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+{
+  "name": "NotificamBot",
+  "version": "0.1.0",
+  "description": "",
+  "private": "true",
+  "main": "server.js",
+  "scripts": {
+    "start": "nodemon src/server.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/franjsco/ricordami-bot.git"
+  },
+  "author": "franjsco (Francesco Esposito)",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/franjsco/ricordami-bot/issues"
+  },
+  "homepage": "https://github.com/franjsco/ricordami-bot#readme",
+  "dependencies": {
+    "dotenv": "^8.2.0",
+    "redis": "^3.0.2",
+    "telegraf": "^3.38.0"
+  },
+  "devDependencies": {
+    "eslint": "^7.1.0",
+    "nodemon": "^2.0.4"
+  }
+}

pub-redis-example.js

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+const redis = require('redis');
+
+const publisher = redis.createClient();
+
+publisher.publish("NotificamBot", JSON.stringify({
+    code:'generic',
+    description: 'event test',
+    options: {}
+}));
+
+
+publisher.quit();

src/server.js

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+const { Telegraf } = require('telegraf');
+const redis = require('redis');
+
+const templates = require('./templates');
+
+require('dotenv').config();
+
+const { 
+  BOT_TOKEN,
+  CHAT_ID,
+  REDIS_CHANNEL
+} =  process.env;
+
+
+const bot = new Telegraf(BOT_TOKEN);
+
+const subscriber = redis.createClient();
+
+bot.start((ctx) => {
+  console.log(`Chat ID: ${ctx.chat.id}`);
+  console.log(`Configured CHAT_ID: ${CHAT_ID}`);
+  
+  if (ctx.chat.id == CHAT_ID) {
+    ctx.reply('Welcome to NotificamBot');
+  }
+});
+
+
+subscriber.on("subscribe", (channel, message) => {
+  console.log(`Subscribe on ${channel}`);
+});
+
+subscriber.on('message', (channel, message) => {
+  console.log('Messaggio: ' + message);
+
+  bot.telegram.sendMessage(CHAT_ID, templates.handler(message));
+
+});
+
+subscriber.subscribe(REDIS_CHANNEL);
+
+
+bot.launch();

src/templates.js

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+
+const genericTemplate = (msg) => {
+  value = `====
+  Code: ${msg.code}
+  Description: ${msg.description}`;
+
+  return value;
+}
+
+
+const handler = (msg) => {
+  let msgParsed;
+  let value;
+
+  try {
+    msgParsed = JSON.parse(msg);
+  } catch (e) {
+    console.error('Error parse');
+    return 'Error';
+  }
+
+  switch (msgParsed.code) {
+    case 'generic':
+      value = genericTemplate(msgParsed);
+      break;
+    default:
+      value = {}
+  }
+
+  return value;
+}
+
+
+const template = {
+  genericTemplate,
+  handler
+}
+
+module.exports = template;