feat(api): create endpoints for getting a specific sms and sms batch by id

api/src/gateway/gateway.controller.ts

@@ -153,6 +153,7 @@ export class GatewayController {
 
   @ApiOperation({ summary: 'Update SMS status' })
   @UseGuards(AuthGuard, CanModifyDevice)
+  @HttpCode(HttpStatus.OK)
   @Patch('/devices/:id/sms-status')
   async updateSMSStatus(
     @Param('id') deviceId: string,
@@ -161,4 +162,26 @@ export class GatewayController {
     const data = await this.gatewayService.updateSMSStatus(deviceId, dto);
     return { data };
   }
+
+  @ApiOperation({ summary: 'Get a single SMS by ID' })
+  @UseGuards(AuthGuard, CanModifyDevice)
+  @Get('/devices/:id/sms/:smsId')
+  async getSMSById(
+    @Param('id') deviceId: string,
+    @Param('smsId') smsId: string,
+  ) {
+    const data = await this.gatewayService.getSMSById(deviceId, smsId);
+    return { data };
+  }
+
+  @ApiOperation({ summary: 'Get an SMS batch by ID with all its SMS messages' })
+  @UseGuards(AuthGuard, CanModifyDevice)
+  @Get('/devices/:id/sms-batch/:smsBatchId')
+  async getSmsBatchById(
+    @Param('id') deviceId: string,
+    @Param('smsBatchId') smsBatchId: string,
+  ) {
+    const data = await this.gatewayService.getSmsBatchById(deviceId, smsBatchId);
+    return { data };
+  }
 }

api/src/gateway/gateway.service.ts

@@ -821,4 +821,78 @@ export class GatewayService {
       } others`
     }
   }
+
+  async getSMSById(deviceId: string, smsId: string): Promise<any> {
+    // Check if device exists and is enabled
+    const device = await this.deviceModel.findById(deviceId);
+    if (!device) {
+      throw new HttpException(
+        {
+          success: false,
+          error: 'Device not found',
+        },
+        HttpStatus.NOT_FOUND,
+      );
+    }
+
+    // Find the SMS that belongs to this device
+    const sms = await this.smsModel.findOne({ 
+      _id: smsId,
+      device: deviceId
+    });
+
+    if (!sms) {
+      throw new HttpException(
+        {
+          success: false,
+          error: 'SMS not found',
+        },
+        HttpStatus.NOT_FOUND,
+      );
+    }
+
+    return sms;
+  }
+
+  async getSmsBatchById(deviceId: string, smsBatchId: string): Promise<any> {
+    // Check if device exists
+    const device = await this.deviceModel.findById(deviceId);
+    if (!device) {
+      throw new HttpException(
+        {
+          success: false,
+          error: 'Device not found',
+        },
+        HttpStatus.NOT_FOUND,
+      );
+    }
+
+    // Find the SMS batch that belongs to this device
+    const smsBatch = await this.smsBatchModel.findOne({ 
+      _id: smsBatchId,
+      device: deviceId
+    });
+
+    if (!smsBatch) {
+      throw new HttpException(
+        {
+          success: false,
+          error: 'SMS batch not found',
+        },
+        HttpStatus.NOT_FOUND,
+      );
+    }
+
+    // Find all SMS messages that belong to this batch
+    const smsMessages = await this.smsModel.find({ 
+      smsBatch: smsBatchId,
+      device: deviceId
+    });
+
+    // Return both the batch and its SMS messages
+    return {
+      batch: smsBatch,
+      messages: smsMessages
+    };
+  }
 }