Greeting Bot

npm install @botmesh/core @botmesh/baileys

// bot.js
import { Bot, WELCOME, defineBot, isMainModule, slashCommandsPlugin } from '@botmesh/core'
import { BaileysProvider } from '@botmesh/baileys'

const HELP = [
  '🤖 *What I can do*',
  '• hi: say hello',
  '• echo <text>: I repeat your text',
  '• /id: your id · /ping: am I alive?',
].join('\n')

const createBot = defineBot((provider) => {
  const bot = new Bot({ provider })

  // /start /help /reset /cancel /id /ping; /start and /help answer with HELP
  bot.plug(slashCommandsPlugin, { greeting: HELP })

  // First contact only: greet once per user, then let the message go on
  bot.when(WELCOME, async (ctx) => {
    await ctx.reply(`🎉 Welcome to the demo bot, ${ctx.pushName ?? 'friend'}!`)
    ctx.pass()
  })

  // Whole-message match, case and accents ignored
  bot.when(['hi', 'hello', 'hey'], (ctx) =>
    ctx.reply(`👋 Hi ${ctx.pushName ?? 'there'}! Send /help to see what I can do.`),
  )

  // A regex trigger: everything after "echo"
  bot.when(/^echo\s+/i, (ctx) => ctx.reply(`🔁 ${ctx.body.replace(/^echo\s+/i, '')}`))

  // Runs only when nothing above handled the message
  bot.onMessage((ctx) => ctx.reply('🤔 I did not get that. Send /help.'))

  return bot
})

export default createBot

// `node bot.js` connects to WhatsApp; `npx botmesh dev bot.js` skips this block
if (isMainModule(import.meta)) {
  const bot = await createBot(new BaileysProvider({ session: 'greeting-bot' }))
  bot.on('ready', () => console.log('✅ Connected. Send "hi" from another phone.'))
  await bot.start()
}

user › Hí
bot › 🎉 Welcome to the demo bot, Ana!
bot › 👋 Hi Ana! Send /help to see what I can do.
user › echo Good morning!
bot › 🔁 Good morning!
user › /help
bot › 🤖 *What I can do*
      • hi: say hello
      • echo <text>: I repeat your text
      • /id: your id · /ping: am I alive?
user › /ping
bot › pong 🏓
user › what's up?
bot › 🤔 I did not get that. Send /help.