migrated wbot initialization to typescript

backend/src/libs/wbot.ts

@@ -0,0 +1,107 @@
+import qrCode from "qrcode-terminal";
+import { Client } from "whatsapp-web.js";
+import { getIO } from "./socket";
+import Whatsapp from "../models/Whatsapp";
+
+const sessions: Client[] = [];
+
+export const initWbot = async (whatsapp: Whatsapp): Promise<void> => {
+  console.log("starting");
+  try {
+    const io = getIO();
+    const sessionName = whatsapp.name;
+    let sessionCfg;
+
+    if (whatsapp && whatsapp.session) {
+      sessionCfg = JSON.parse(whatsapp.session);
+    }
+
+    const sessionIndex = sessions.findIndex(s => s.id === whatsapp.id);
+    if (sessionIndex !== -1) {
+      sessions[sessionIndex].destroy();
+      sessions.splice(sessionIndex, 1);
+    }
+
+    const wbot = new Client({
+      session: sessionCfg,
+      restartOnAuthFail: true
+    });
+    wbot.initialize();
+
+    wbot.on("qr", async qr => {
+      console.log("Session:", sessionName);
+
+      qrCode.generate(qr, { small: true });
+
+      await whatsapp.update({ qrcode: qr, status: "qrcode" });
+
+      io.emit("whatsappSession", {
+        action: "update",
+        session: whatsapp
+      });
+    });
+
+    wbot.on("authenticated", async session => {
+      console.log("Session:", sessionName, "AUTHENTICATED");
+
+      await whatsapp.update({
+        session: JSON.stringify(session),
+        status: "authenticated"
+      });
+
+      io.emit("whatsappSession", {
+        action: "update",
+        session: whatsapp
+      });
+    });
+
+    wbot.on("auth_failure", async msg => {
+      console.error("Session:", sessionName, "AUTHENTICATION FAILURE", msg);
+
+      await whatsapp.update({ session: "" });
+    });
+
+    wbot.on("ready", async () => {
+      console.log("Session:", sessionName, "READY");
+
+      await whatsapp.update({
+        status: "CONNECTED",
+        qrcode: ""
+      });
+
+      io.emit("whatsappSession", {
+        action: "update",
+        session: whatsapp
+      });
+
+      wbot.sendPresenceAvailable();
+    });
+
+    wbot.id = whatsapp.id;
+    sessions.push(wbot);
+  } catch (err) {
+    console.log(err);
+  }
+};
+
+export const getWbot = (whatsappId: number): Client | null => {
+  const sessionIndex = sessions.findIndex(s => s.id === whatsappId);
+
+  if (sessionIndex === -1) {
+    console.log("This Wbot session is not initialized");
+    return null;
+  }
+  return sessions[sessionIndex];
+};
+
+export const removeWbot = (whatsappId: number): void => {
+  try {
+    const sessionIndex = sessions.findIndex(s => s.id === whatsappId);
+    if (sessionIndex !== -1) {
+      sessions[sessionIndex].destroy();
+      sessions.splice(sessionIndex, 1);
+    }
+  } catch (err) {
+    console.log(err);
+  }
+};