Initial commit

backend/app/schemas/common.py

@@ -0,0 +1,40 @@
+"""Common Pydantic schemas used across the application."""
+
+from typing import Optional, Generic, TypeVar, List
+from pydantic import BaseModel
+
+
+DataT = TypeVar('DataT')
+
+
+class PaginatedResponse(BaseModel, Generic[DataT]):
+    """Generic paginated response schema."""
+
+    items: List[DataT]
+    total: int
+    page: int
+    limit: int
+    pages: int
+
+
+class MessageResponse(BaseModel):
+    """Simple message response schema."""
+
+    message: str
+    detail: Optional[str] = None
+
+
+class ErrorResponse(BaseModel):
+    """Error response schema."""
+
+    error: str
+    detail: Optional[str] = None
+    status_code: int
+
+
+class TokenResponse(BaseModel):
+    """JWT token response schema."""
+
+    access_token: str
+    token_type: str = "bearer"
+    expires_in: int  # seconds