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metamigo-api/app/services/whatsapp.ts

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+import { Server } from "@hapi/hapi";
+import { Service } from "@hapipal/schmervice";
+import { SavedWhatsappBot as Bot } from "db";
+import makeWASocket, { DisconnectReason, proto, downloadContentFromMessage, MediaType } from "@adiwajshing/baileys";
+import workerUtils from "../../worker-utils";
+import { useDatabaseAuthState } from "../lib/whatsapp-key-store";
+import { connect } from "pg-monitor";
+
+export type AuthCompleteCallback = (error?: string) => void;
+
+export default class WhatsappService extends Service {
+  connections: { [key: string]: any } = {};
+  loginConnections: { [key: string]: any } = {};
+
+  static browserDescription: [string, string, string] = [
+    "Metamigo",
+    "Chrome",
+    "2.0",
+  ];
+
+  constructor(server: Server, options: never) {
+    super(server, options);
+  }
+
+  async initialize(): Promise<void> {
+    this.updateConnections();
+  }
+
+  async teardown(): Promise<void> {
+    this.resetConnections();
+  }
+
+  private async sleep(ms: number): Promise<void> {
+    console.log(`pausing ${ms}`)
+    return new Promise(resolve => setTimeout(resolve, ms));
+  }
+
+  private async resetConnections() {
+    for (const connection of Object.values(this.connections)) {
+      try {
+        connection.end(null)
+      } catch (error) {
+        console.log(error);
+      }
+    }
+    this.connections = {};
+  }
+
+  private createConnection(bot: Bot, server: Server, options: any, authCompleteCallback?: any) {
+    const { state, saveState } = useDatabaseAuthState(bot, server)
+    const connection = makeWASocket({ ...options, auth: state });
+    let pause = 5000;
+    connection.ev.on('connection.update', async (update) => {
+      console.log(`Connection updated ${JSON.stringify(update, null, 2)}`)
+      const { connection: connectionState, lastDisconnect, qr, isNewLogin } = update
+      if (qr) {
+        console.log('got qr code')
+        await this.server.db().whatsappBots.updateQR(bot, qr);
+      } else if (isNewLogin) {
+        console.log("got new login")
+      } else if (connectionState === 'open') {
+        console.log('opened connection')
+      } else if (connectionState === "close") {
+        console.log('connection closed due to ', lastDisconnect.error)
+        const disconnectStatusCode = (lastDisconnect?.error as any)?.output?.statusCode
+        if (disconnectStatusCode === DisconnectReason.restartRequired) {
+          console.log('reconnecting after got new login')
+          const updatedBot = await this.findById(bot.id);
+          this.createConnection(updatedBot, server, options)
+          authCompleteCallback()
+        } else if (disconnectStatusCode !== DisconnectReason.loggedOut) {
+          console.log('reconnecting')
+          await this.sleep(pause)
+          pause = pause * 2
+          this.createConnection(bot, server, options)
+        }
+      }
+    })
+
+    connection.ev.on('chats.set', item => console.log(`recv ${item.chats.length} chats (is latest: ${item.isLatest})`))
+    connection.ev.on('messages.set', item => console.log(`recv ${item.messages.length} messages (is latest: ${item.isLatest})`))
+    connection.ev.on('contacts.set', item => console.log(`recv ${item.contacts.length} contacts`))
+    connection.ev.on('messages.upsert', async m => {
+      console.log("messages upsert")
+      const { messages } = m;
+      if (messages) {
+        await this.queueUnreadMessages(bot, messages);
+      }
+    })
+    connection.ev.on('messages.update', m => console.log(m))
+    connection.ev.on('message-receipt.update', m => console.log(m))
+    connection.ev.on('presence.update', m => console.log(m))
+    connection.ev.on('chats.update', m => console.log(m))
+    connection.ev.on('contacts.upsert', m => console.log(m))
+    connection.ev.on('creds.update', saveState)
+
+    this.connections[bot.id] = connection;
+  }
+
+  private async updateConnections() {
+    this.resetConnections();
+
+    const bots = await this.server.db().whatsappBots.findAll();
+    for await (const bot of bots) {
+      if (bot.isVerified) {
+        this.createConnection(
+          bot,
+          this.server,
+          {
+            browser: WhatsappService.browserDescription,
+            printQRInTerminal: false,
+            version: [2, 2204, 13],
+          })
+      }
+    }
+  }
+
+  private async queueMessage(bot: Bot, webMessageInfo: proto.WebMessageInfo) {
+    const { key, message, messageTimestamp } = webMessageInfo;
+    const { remoteJid } = key;
+
+    if (!key.fromMe && message && remoteJid !== "status@broadcast") {
+      const isMediaMessage =
+        message.audioMessage ||
+        message.documentMessage ||
+        message.imageMessage ||
+        message.videoMessage;
+
+      let messageContent = Object.values(message)[0]
+      let messageType: MediaType;
+      let attachment: string;
+      let filename: string;
+      let mimetype: string;
+      if (isMediaMessage) {
+        if (message.audioMessage) {
+          messageType = "audio";
+          filename =
+            key.id + "." + message.audioMessage.mimetype.split("/").pop();
+          mimetype = message.audioMessage.mimetype;
+        } else if (message.documentMessage) {
+          messageType = "document";
+          filename = message.documentMessage.fileName;
+          mimetype = message.documentMessage.mimetype;
+        } else if (message.imageMessage) {
+          messageType = "image";
+          filename =
+            key.id + "." + message.imageMessage.mimetype.split("/").pop();
+          mimetype = message.imageMessage.mimetype;
+        } else if (message.videoMessage) {
+          messageType = "video"
+          filename =
+            key.id + "." + message.videoMessage.mimetype.split("/").pop();
+          mimetype = message.videoMessage.mimetype;
+        }
+
+        const stream = await downloadContentFromMessage(messageContent, messageType)
+        let buffer = Buffer.from([])
+        for await (const chunk of stream) {
+          buffer = Buffer.concat([buffer, chunk])
+        }
+        attachment = buffer.toString("base64");
+      }
+
+      if (messageContent || attachment) {
+        const receivedMessage = {
+          waMessageId: key.id,
+          waMessage: JSON.stringify(webMessageInfo),
+          waTimestamp: new Date((messageTimestamp as number) * 1000),
+          attachment,
+          filename,
+          mimetype,
+          whatsappBotId: bot.id,
+          botPhoneNumber: bot.phoneNumber,
+        };
+
+        workerUtils.addJob("whatsapp-message", receivedMessage, {
+          jobKey: key.id,
+        });
+      }
+    }
+  }
+
+  private async queueUnreadMessages(bot: Bot, messages: any[]) {
+    for await (const message of messages) {
+      await this.queueMessage(bot, message);
+    }
+  }
+
+  async create(
+    phoneNumber: string,
+    description: string,
+    email: string
+  ): Promise<Bot> {
+    const db = this.server.db();
+    const user = await db.users.findBy({ email });
+    const row = await db.whatsappBots.insert({
+      phoneNumber,
+      description,
+      userId: user.id,
+    });
+    return row;
+  }
+
+  async findAll(): Promise<Bot[]> {
+    return this.server.db().whatsappBots.findAll();
+  }
+
+  async findById(id: string): Promise<Bot> {
+    return this.server.db().whatsappBots.findById({ id });
+  }
+
+  async findByToken(token: string): Promise<Bot> {
+    return this.server.db().whatsappBots.findBy({ token });
+  }
+
+  async register(bot: Bot, callback: AuthCompleteCallback): Promise<void> {
+    await this.createConnection(bot, this.server, { version: [2, 2204, 13] }, callback);
+  }
+
+  async send(bot: Bot, phoneNumber: string, message: string): Promise<void> {
+    const connection = this.connections[bot.id];
+    const recipient = `${phoneNumber.replace(/\D+/g, "")}@s.whatsapp.net`;
+    await connection.sendMessage(recipient, { text: message });
+  }
+
+  async receiveSince(bot: Bot, lastReceivedDate: Date): Promise<void> {
+    const connection = this.connections[bot.id];
+    const messages = await connection.messagesReceivedAfter(
+      lastReceivedDate,
+      false
+    );
+    for (const message of messages) {
+      this.queueMessage(bot, message);
+    }
+  }
+
+  async receive(bot: Bot, lastReceivedDate: Date): Promise<any> {
+    const connection = this.connections[bot.id];
+    // const messages = await connection.messagesReceivedAfter(
+    //   lastReceivedDate,
+    //   false
+    // );
+
+    const messages = await connection.loadAllUnreadMessages();
+    return messages;
+  }
+}