Initial commit: Wallet App - FastAPI backend with React frontend for personal finance tracking

backend/app/schemas.py

@@ -0,0 +1,79 @@
+"""Pydantic schemas for request/response validation."""
+
+from datetime import datetime
+from pydantic import BaseModel
+from typing import Optional
+from enum import Enum
+
+
+class EntryType(str, Enum):
+    """Type of wallet entry."""
+    INCOME = "income"
+    EXPENSE = "expense"
+
+
+class UserRegister(BaseModel):
+    """Schema for user registration."""
+    username: str
+    email: str
+    password: str
+
+
+class UserLogin(BaseModel):
+    """Schema for user login."""
+    username: str
+    password: str
+
+
+class UserResponse(BaseModel):
+    """Schema for user response."""
+    id: int
+    username: str
+    email: str
+    created_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class WalletEntryCreate(BaseModel):
+    """Schema for creating a wallet entry."""
+    amount: float
+    entry_type: EntryType
+    description: str
+
+
+class WalletEntryUpdate(BaseModel):
+    """Schema for updating a wallet entry."""
+    amount: Optional[float] = None
+    entry_type: Optional[EntryType] = None
+    description: Optional[str] = None
+
+
+class WalletEntryResponse(BaseModel):
+    """Schema for wallet entry response."""
+    id: int
+    user_id: int
+    amount: float
+    entry_type: EntryType
+    description: str
+    created_at: datetime
+    updated_at: datetime
+
+    class Config:
+        from_attributes = True
+
+
+class DashboardMetrics(BaseModel):
+    """Schema for dashboard metrics."""
+    total_balance: float
+    total_income: float
+    total_expenses: float
+    entry_count: int
+
+
+class TokenResponse(BaseModel):
+    """Schema for token response."""
+    access_token: str
+    token_type: str
+    user: UserResponse