Init.

backend/app/utils/exceptions.py

@@ -0,0 +1,50 @@
+from fastapi import HTTPException, status
+
+
+class BetNotFoundError(HTTPException):
+    def __init__(self):
+        super().__init__(status_code=status.HTTP_404_NOT_FOUND, detail="Bet not found")
+
+
+class InsufficientFundsError(HTTPException):
+    def __init__(self):
+        super().__init__(status_code=status.HTTP_400_BAD_REQUEST, detail="Insufficient funds")
+
+
+class BetNotAvailableError(HTTPException):
+    def __init__(self):
+        super().__init__(status_code=status.HTTP_400_BAD_REQUEST, detail="Bet is no longer available")
+
+
+class CannotAcceptOwnBetError(HTTPException):
+    def __init__(self):
+        super().__init__(status_code=status.HTTP_400_BAD_REQUEST, detail="Cannot accept your own bet")
+
+
+class UnauthorizedError(HTTPException):
+    def __init__(self, detail: str = "Not authorized"):
+        super().__init__(status_code=status.HTTP_401_UNAUTHORIZED, detail=detail)
+
+
+class UserNotFoundError(HTTPException):
+    def __init__(self):
+        super().__init__(status_code=status.HTTP_404_NOT_FOUND, detail="User not found")
+
+
+class InvalidCredentialsError(HTTPException):
+    def __init__(self):
+        super().__init__(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Incorrect email or password",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+
+
+class UserAlreadyExistsError(HTTPException):
+    def __init__(self, detail: str = "User already exists"):
+        super().__init__(status_code=status.HTTP_400_BAD_REQUEST, detail=detail)
+
+
+class NotBetParticipantError(HTTPException):
+    def __init__(self):
+        super().__init__(status_code=status.HTTP_403_FORBIDDEN, detail="You are not a participant in this bet")

backend/app/utils/security.py

@@ -0,0 +1,38 @@
+from datetime import datetime, timedelta
+from typing import Any
+from jose import JWTError, jwt
+from passlib.context import CryptContext
+from app.config import settings
+
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+
+def verify_password(plain_password: str, hashed_password: str) -> bool:
+    return pwd_context.verify(plain_password, hashed_password)
+
+
+def get_password_hash(password: str) -> str:
+    return pwd_context.hash(password)
+
+
+def create_access_token(data: dict[str, Any], expires_delta: timedelta | None = None) -> str:
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, settings.JWT_SECRET, algorithm=settings.JWT_ALGORITHM)
+    return encoded_jwt
+
+
+def create_refresh_token(data: dict[str, Any]) -> str:
+    to_encode = data.copy()
+    expire = datetime.utcnow() + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, settings.JWT_SECRET, algorithm=settings.JWT_ALGORITHM)
+    return encoded_jwt
+
+
+def decode_token(token: str) -> dict[str, Any]:
+    return jwt.decode(token, settings.JWT_SECRET, algorithms=[settings.JWT_ALGORITHM])