fix: resolve timezone issues for received messages

android/app/src/main/java/com/vernu/sms/dtos/SMSDTO.java

@@ -5,16 +5,11 @@ import java.util.Date;
 public class SMSDTO {
     private String sender;
     private String message = "";
-    private Date receivedAt;
+    private long receivedAtInMillis;
 
     public SMSDTO() {
     }
 
-    public SMSDTO(String sender, String message, Date receivedAt) {
-        this.sender = sender;
-        this.message = message;
-        this.receivedAt = receivedAt;
-    }
 
     public String getSender() {
         return sender;
@@ -32,11 +27,11 @@ public class SMSDTO {
         this.message = message;
     }
 
-    public Date getReceivedAt() {
-        return receivedAt;
+    public long getReceivedAtInMillis() {
+        return receivedAtInMillis;
     }
 
-    public void setReceivedAt(Date receivedAt) {
-        this.receivedAt = receivedAt;
+    public void setReceivedAtInMillis(long receivedAtInMillis) {
+        this.receivedAtInMillis = receivedAtInMillis;
     }
 }

android/app/src/main/java/com/vernu/sms/receivers/SMSBroadcastReceiver.java

@@ -58,7 +58,7 @@ public class SMSBroadcastReceiver extends BroadcastReceiver {
         for (SmsMessage message : messages) {
             receivedSMSDTO.setMessage(receivedSMSDTO.getMessage() + message.getMessageBody());
             receivedSMSDTO.setSender(message.getOriginatingAddress());
-            receivedSMSDTO.setReceivedAt(new Date(message.getTimestampMillis()));
+            receivedSMSDTO.setReceivedAtInMillis(message.getTimestampMillis());
         }
 //        receivedSMSDTO.setSender(receivedSMS.getSender());
 //        receivedSMSDTO.setMessage(receivedSMS.getMessage());

api/src/gateway/gateway.dto.ts

@@ -98,7 +98,14 @@ export class ReceivedSMSDTO {
     required: true,
     description: 'The time the message was received',
   })
-  receivedAt: Date
+  receivedAt?: Date
+
+  @ApiProperty({
+    type: Number,
+    required: true,
+    description: 'The time the message was created',
+  })
+  receivedAtInMillis?: number
 }
 
 export class DeviceDTO {

api/src/gateway/gateway.service.ts

@@ -200,7 +200,11 @@ export class GatewayService {
       )
     }
 
-    if (!dto.receivedAt || !dto.sender || !dto.message) {
+    if (
+      (!dto.receivedAt && !dto.receivedAtInMillis) ||
+      !dto.sender ||
+      !dto.message
+    ) {
       console.log('Invalid received SMS data')
       throw new HttpException(
         {
@@ -211,12 +215,16 @@ export class GatewayService {
       )
     }
 
+    const receivedAt = dto.receivedAtInMillis
+      ? new Date(dto.receivedAtInMillis)
+      : dto.receivedAt
+
     const sms = await this.smsModel.create({
       device: device._id,
       message: dto.message,
       type: SMSType.RECEIVED,
       sender: dto.sender,
-      receivedAt: dto.receivedAt,
+      receivedAt,
     })
 
     this.deviceModel