feat(api): add push notification service and integrate with agent task handling

src/services/push_notification_service.py

@@ -0,0 +1,64 @@
+import aiohttp
+import logging
+from datetime import datetime
+from typing import Dict, Any, Optional
+import asyncio
+
+logger = logging.getLogger(__name__)
+
+
+class PushNotificationService:
+    def __init__(self):
+        self.session = aiohttp.ClientSession()
+
+    async def send_notification(
+        self,
+        url: str,
+        task_id: str,
+        state: str,
+        message: Optional[Dict[str, Any]] = None,
+        headers: Optional[Dict[str, str]] = None,
+        max_retries: int = 3,
+        retry_delay: float = 1.0,
+    ) -> bool:
+        """
+        Envia uma notificação push para a URL especificada.
+        Implementa retry com backoff exponencial.
+        """
+        payload = {
+            "taskId": task_id,
+            "state": state,
+            "timestamp": datetime.now().isoformat(),
+            "message": message,
+        }
+
+        for attempt in range(max_retries):
+            try:
+                async with self.session.post(
+                    url, json=payload, headers=headers or {}, timeout=10
+                ) as response:
+                    if response.status in (200, 201, 202, 204):
+                        return True
+                    else:
+                        logger.warning(
+                            f"Push notification failed with status {response.status}. "
+                            f"Attempt {attempt + 1}/{max_retries}"
+                        )
+            except Exception as e:
+                logger.error(
+                    f"Error sending push notification: {str(e)}. "
+                    f"Attempt {attempt + 1}/{max_retries}"
+                )
+
+            if attempt < max_retries - 1:
+                await asyncio.sleep(retry_delay * (2**attempt))
+
+        return False
+
+    async def close(self):
+        """Fecha a sessão HTTP"""
+        await self.session.close()
+
+
+# Instância global do serviço
+push_notification_service = PushNotificationService()