fase 4

worker/app/storage/minio_client.py

@@ -134,6 +134,52 @@ def _sanitize_filename(filename: str) -> str:
     return safe or "attachment"
 
 
+async def upload_outbound_eml(
+    tenant_id: str,
+    mailbox_id: str,
+    message_id: str,
+    eml_bytes: bytes,
+) -> str:
+    """
+    Carica il raw EML di un messaggio outbound su MinIO.
+
+    Percorso: tenants/{tenant_id}/mailboxes/{mailbox_id}/outbound/{message_id}.eml
+
+    Args:
+        tenant_id:  UUID del tenant
+        mailbox_id: UUID della casella mittente
+        message_id: UUID del messaggio
+        eml_bytes:  byte del raw EML
+
+    Returns:
+        Percorso oggetto su MinIO (senza bucket name)
+    """
+    client = get_minio_client()
+    bucket = settings.minio_bucket
+    object_path = (
+        f"tenants/{tenant_id}/mailboxes/{mailbox_id}/outbound/{message_id}.eml"
+    )
+
+    try:
+        import io as _io
+        data_stream = _io.BytesIO(eml_bytes)
+        await client.put_object(
+            bucket_name=bucket,
+            object_name=object_path,
+            data=data_stream,
+            length=len(eml_bytes),
+            content_type="message/rfc822",
+        )
+        logger.debug(
+            f"EML outbound caricato: s3://{bucket}/{object_path} "
+            f"({len(eml_bytes)} bytes)"
+        )
+        return object_path
+    except Exception as e:
+        logger.error(f"Errore upload EML outbound {object_path}: {e}")
+        raise
+
+
 async def ensure_bucket_exists() -> None:
     """Verifica che il bucket MinIO esista, altrimenti lo crea."""
     client = get_minio_client()