feat(provider): ✨ added dialogflow

packages/contexts/src/dialogflow/dialogflow.class.js

@@ -0,0 +1,113 @@
+const { CoreClass } = require('@bot-whatsapp/bot')
+const dialogflow = require('@google-cloud/dialogflow')
+const { existsSync, readFileSync } = require('fs')
+const { join } = require('path')
+
+/**
+ * Necesita extender de core.class
+ * handleMsg(messageInComming) //   const { body, from } = messageInComming
+ */
+
+const GOOGLE_ACCOUNT_PATH = join(process.cwd(), 'google-key.json')
+
+class DialogFlowContext extends CoreClass {
+    projectId = null
+    configuration = null
+    sessionClient = null
+    optionsDX = {
+        language: 'es',
+    }
+
+    constructor(_database, _provider, _optionsDX = {}) {
+        super(null, _database, _provider)
+        this.optionsDX = { ...this.optionsDX, ..._optionsDX }
+        this.init()
+    }
+
+    /**
+     * Verificar conexión con servicio de DialogFlow
+     */
+    init = () => {
+        if (!existsSync(GOOGLE_ACCOUNT_PATH)) {
+            console.log(`[ERROR]: No se encontro ${GOOGLE_ACCOUNT_PATH}`)
+            /**
+             * Emitir evento de error para que se mueste por consola dicinedo que no tiene el json
+             *  */
+        }
+
+        const rawJson = readFileSync(GOOGLE_ACCOUNT_PATH, 'utf-8')
+        const { project_id, private_key, client_email } = JSON.parse(rawJson)
+
+        this.projectId = project_id
+        this.configuration = {
+            credentials: {
+                private_key,
+                client_email,
+            },
+        }
+
+        this.sessionClient = new dialogflow.SessionsClient(this.configuration)
+    }
+
+    /**
+     * GLOSSARY.md
+     * @param {*} messageCtxInComming
+     * @returns
+     */
+    handleMsg = async (messageCtxInComming) => {
+        const languageCode = this.optionsDX.language
+        const { from, body } = messageCtxInComming
+
+        let customPayload = {}
+
+        /**
+         * 📄 Creamos session de contexto basado en el numero de la persona
+         * para evitar este problema.
+         * https://github.com/codigoencasa/bot-whatsapp/pull/140
+         */
+        const session = this.sessionClient.projectAgentSessionPath(
+            this.projectId,
+            from
+        )
+        const reqDialog = {
+            session,
+            queryInput: {
+                text: {
+                    text: body,
+                    languageCode,
+                },
+            },
+        }
+
+        const [single] = (await this.sessionClient.detectIntent(reqDialog)) || [
+            null,
+        ]
+
+        const { queryResult } = single
+
+        const msgPayload = queryResult?.fulfillmentMessages?.find(
+            (a) => a.message === 'payload'
+        )
+
+        // Revisamos si el dialogFlow tiene multimedia
+        if (msgPayload && msgPayload?.payload) {
+            const { fields } = msgPayload.payload
+            const mapButtons = fields?.buttons?.listValue?.values.map((m) => {
+                return m?.structValue?.fields?.body?.stringValue
+            })
+            customPayload = {
+                media: fields?.media?.stringValue,
+                buttons: mapButtons,
+            }
+        }
+
+        const ctxFromDX = {
+            ...customPayload,
+            answer: queryResult?.fulfillmentText,
+        }
+
+        this.sendFlow([ctxFromDX], from)
+    }
+}
+
+module.exports = DialogFlowContext

packages/contexts/src/dialogflow/index.js

@@ -0,0 +1,14 @@
+const DialogFlowClass = require('./dialogflow.class')
+
+/**
+ * Crear instancia de clase Bot
+ * @param {*} args
+ * @returns
+ */
+const createBotDialog = async ({ database, provider }) =>
+    new DialogFlowClass(database, provider)
+
+module.exports = {
+    createBotDialog,
+    DialogFlowClass,
+}