feat(provider): meta provider is added

packages/provider/src/meta/server.js

@@ -0,0 +1,63 @@
+const { EventEmitter } = require('node:events')
+const polka = require('polka')
+const { urlencoded } = require('body-parser')
+
+class MetaWebHookServer extends EventEmitter {
+    metaServer
+    metaPort
+    verifyToken
+    constructor(_verifyToken, _metaPort) {
+        super()
+        this.metaServer = this.buildHTTPServer()
+        this.metaPort = _metaPort
+        this.verifyToken = _verifyToken
+    }
+
+    /**
+     * Mensaje entrante
+     * emit: 'message'
+     * @param {*} req
+     * @param {*} res
+     */
+    incomingMsg = (req, res) => {
+        const { body } = req
+        const message = body.entry[0].changes[0].value.messages[0]
+        const to = body.entry[0].changes[0].value.metadata.display_phone_number
+        this.emit('message', {
+            from: message.from,
+            to,
+            body: message.text.body,
+        })
+        const json = JSON.stringify({ body })
+        res.end(json)
+    }
+
+    /**
+     * Contruir HTTP Server
+     * @returns
+     */
+    buildHTTPServer = () => {
+        return polka()
+            .use(urlencoded({ extended: true }))
+            .post('/meta-hook', this.incomingMsg)
+    }
+
+    /**
+     * Puerto del HTTP
+     * @param {*} port default 3000
+     */
+    start = () => {
+        this.metaServer.listen(this.metaPort, () => {
+            console.log(``)
+            console.log(`[meta]: Agregar esta url "WHEN A MESSAGE COMES IN"`)
+            console.log(
+                `[meta]: POST http://localhost:${this.metaPort}/meta-hook`
+            )
+            console.log(`[meta]: Más información en la documentacion`)
+            console.log(``)
+        })
+        this.emit('ready')
+    }
+}
+
+module.exports = MetaWebHookServer