feat: add endpoints for sending and polling messages

dto.py

@@ -18,6 +18,7 @@ class Device:
     def convert(device_from_db) -> Device:
         return Device(*device_from_db)
 
+
 @dataclass
 class SimCard:
     phone_number: str
@@ -34,6 +35,7 @@ class SimCard:
     def convert(sim_from_db) -> SimCard:
         return SimCard(*sim_from_db)
 
+
 @dataclass
 class SmsMessage:
     content: str
@@ -56,3 +58,23 @@ class SmsMessage:
 
     def convert(sms_from_db) -> SmsMessage:
         return SmsMessage(*sms_from_db)
+
+
+@dataclass
+class QueuedSmsMessage:
+    content: str
+    sender_access_key: str
+    local_phone_number: str
+    remote_phone_number: str
+
+    def to_dict(self):
+        return {
+                'content': self.content,
+                'sender_access_key': self.sender_access_key,
+                'local_phone_number': self.local_phone_number,
+                'remote_phone_number': self.remote_phone_number
+               }
+
+
+    def convert(sms_from_db) -> QueuedSmsMessage:
+        return QueuedSmsMessage(*sms_from_db)