add send presence router

Author: gabrielpastori1

src/validate/validate.schema.ts

@@ -149,6 +149,16 @@ export const textMessageSchema: JSONSchema7 = {
   required: ['textMessage', 'number'],
 };
 
+export const presenceSchema: JSONSchema7 = {
+  $id: v4(),
+  type: 'object',
+  properties: {
+    number: { ...numberDefinition },
+    options: { ...optionsSchema, required: ['presence', 'delay'] },
+  },
+  required: ['options', 'number'],
+};
+
 export const pollMessageSchema: JSONSchema7 = {
   $id: v4(),
   type: 'object',

src/whatsapp/controllers/sendMessage.controller.ts

@@ -11,6 +11,7 @@ import {
   SendLocationDto,
   SendMediaDto,
   SendPollDto,
+  SendPresenceDto,
   SendReactionDto,
   SendStatusDto,
   SendStickerDto,
@@ -23,6 +24,11 @@ const logger = new Logger('MessageRouter');
 export class SendMessageController {
   constructor(private readonly waMonitor: WAMonitoringService) {}
 
+  public async sendPresence({ instanceName }: InstanceDto, data: SendPresenceDto) {
+    logger.verbose('requested sendPresence from ' + instanceName + ' instance');
+    return await this.waMonitor.waInstances[instanceName].sendPresence(data);
+  }
+
   public async sendText({ instanceName }: InstanceDto, data: SendTextDto) {
     logger.verbose('requested sendText from ' + instanceName + ' instance');
     return await this.waMonitor.waInstances[instanceName].textMessage(data);

src/whatsapp/dto/sendMessage.dto.ts

@@ -46,9 +46,18 @@ class PollMessage {
   values: string[];
   messageSecret?: Uint8Array;
 }
+export class SendPresenceDto extends Metadata {
+  options: {
+    presence: WAPresence;
+    delay: number;
+  };
+}
 export class SendTextDto extends Metadata {
   textMessage: TextMessage;
 }
+export class SendPresence extends Metadata {
+  textMessage: TextMessage;
+}
 
 export class SendStatusDto extends Metadata {
   statusMessage: StatusMessage;

src/whatsapp/routers/sendMessage.router.ts

@@ -9,6 +9,7 @@ import {
   locationMessageSchema,
   mediaMessageSchema,
   pollMessageSchema,
+  presenceSchema,
   reactionMessageSchema,
   statusMessageSchema,
   stickerMessageSchema,
@@ -23,6 +24,7 @@ import {
   SendLocationDto,
   SendMediaDto,
   SendPollDto,
+  SendPresenceDto,
   SendReactionDto,
   SendStatusDto,
   SendStickerDto,
@@ -37,6 +39,22 @@ export class MessageRouter extends RouterBroker {
   constructor(...guards: RequestHandler[]) {
     super();
     this.router
+      .post(this.routerPath('sendPresence'), ...guards, async (req, res) => {
+        logger.verbose('request received in sendText');
+        logger.verbose('request body: ');
+        logger.verbose(req.body);
+
+        logger.verbose('request query: ');
+        logger.verbose(req.query);
+        const response = await this.dataValidate<null>({
+          request: req,
+          schema: presenceSchema,
+          ClassRef: SendPresenceDto,
+          execute: (instance, data) => sendMessageController.sendPresence(instance, data),
+        });
+
+        return res.status(HttpStatus.CREATED).json(response);
+      })
       .post(this.routerPath('sendText'), ...guards, async (req, res) => {
         logger.verbose('request received in sendText');
         logger.verbose('request body: ');

src/whatsapp/services/whatsapp.service.ts

@@ -109,6 +109,7 @@ import {
   SendLocationDto,
   SendMediaDto,
   SendPollDto,
+  SendPresenceDto,
   SendReactionDto,
   SendStatusDto,
   SendStickerDto,
@@ -2387,6 +2388,38 @@ export class WAStartupService {
     return this.stateConnection;
   }
 
+  public async sendPresence(data: SendPresenceDto) {
+    try {
+      const { number } = data;
+
+      this.logger.verbose(`Check if number "${number}" is WhatsApp`);
+      const isWA = (await this.whatsappNumber({ numbers: [number] }))?.shift();
+
+      this.logger.verbose(`Exists: "${isWA.exists}" | jid: ${isWA.jid}`);
+      if (!isWA.exists && !isJidGroup(isWA.jid) && !isWA.jid.includes('@broadcast')) {
+        throw new BadRequestException(isWA);
+      }
+
+      const sender = isWA.jid;
+
+      this.logger.verbose('Sending presence');
+      await this.client.presenceSubscribe(sender);
+      this.logger.verbose('Subscribing to presence');
+
+      await this.client.sendPresenceUpdate(data.options?.presence ?? 'composing', sender);
+      this.logger.verbose('Sending presence update: ' + data.options?.presence ?? 'composing');
+
+      await delay(data.options.delay);
+      this.logger.verbose('Set delay: ' + data.options.delay);
+
+      await this.client.sendPresenceUpdate('paused', sender);
+      this.logger.verbose('Sending presence update: paused');
+    } catch (error) {
+      this.logger.error(error);
+      throw new BadRequestException(error.toString());
+    }
+  }
+
   // Send Message Controller
   public async textMessage(data: SendTextDto, isChatwoot = false) {
     this.logger.verbose('Sending text message');