non-building checkpoint 1

backend/app/core/exceptions.py

@@ -0,0 +1,172 @@
+"""
+Custom exceptions for the application.
+"""
+
+from typing import Any, Dict, Optional
+from fastapi import HTTPException, status
+
+
+class DailyJournalPromptException(HTTPException):
+    """Base exception for Daily Journal Prompt application."""
+
+    def __init__(
+        self,
+        status_code: int = status.HTTP_500_INTERNAL_SERVER_ERROR,
+        detail: Any = None,
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(status_code=status_code, detail=detail, headers=headers)
+
+
+class ValidationError(DailyJournalPromptException):
+    """Exception for validation errors."""
+
+    def __init__(
+        self,
+        detail: Any = "Validation error",
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class NotFoundError(DailyJournalPromptException):
+    """Exception for resource not found errors."""
+
+    def __init__(
+        self,
+        detail: Any = "Resource not found",
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class UnauthorizedError(DailyJournalPromptException):
+    """Exception for unauthorized access errors."""
+
+    def __init__(
+        self,
+        detail: Any = "Unauthorized access",
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class ForbiddenError(DailyJournalPromptException):
+    """Exception for forbidden access errors."""
+
+    def __init__(
+        self,
+        detail: Any = "Forbidden access",
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_403_FORBIDDEN,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class AIServiceError(DailyJournalPromptException):
+    """Exception for AI service errors."""
+
+    def __init__(
+        self,
+        detail: Any = "AI service error",
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class DataServiceError(DailyJournalPromptException):
+    """Exception for data service errors."""
+
+    def __init__(
+        self,
+        detail: Any = "Data service error",
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class ConfigurationError(DailyJournalPromptException):
+    """Exception for configuration errors."""
+
+    def __init__(
+        self,
+        detail: Any = "Configuration error",
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class PromptPoolEmptyError(DailyJournalPromptException):
+    """Exception for empty prompt pool."""
+
+    def __init__(
+        self,
+        detail: Any = "Prompt pool is empty",
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        super().__init__(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class InsufficientPoolSizeError(DailyJournalPromptException):
+    """Exception for insufficient pool size."""
+
+    def __init__(
+        self,
+        current_size: int,
+        requested: int,
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        detail = f"Pool only has {current_size} prompts, requested {requested}"
+        super().__init__(
+            status_code=status.HTTP_400_BAD_REQUEST,
+            detail=detail,
+            headers=headers,
+        )
+
+
+class TemplateNotFoundError(DailyJournalPromptException):
+    """Exception for missing template files."""
+
+    def __init__(
+        self,
+        template_name: str,
+        headers: Optional[Dict[str, str]] = None,
+    ) -> None:
+        detail = f"Template not found: {template_name}"
+        super().__init__(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail=detail,
+            headers=headers,
+        )
+