init commit

app/db/models/category.py

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+"""Category model for income/expense categories"""
+
+from sqlalchemy import Column, Integer, String, DateTime, Boolean, ForeignKey, Enum
+from sqlalchemy.orm import relationship
+from datetime import datetime
+from enum import Enum as PyEnum
+from app.db.database import Base
+
+
+class CategoryType(str, PyEnum):
+    """Types of categories"""
+    EXPENSE = "expense"
+    INCOME = "income"
+
+
+class Category(Base):
+    """Category model - income/expense categories"""
+
+    __tablename__ = "categories"
+
+    id = Column(Integer, primary_key=True)
+    family_id = Column(Integer, ForeignKey("families.id"), nullable=False, index=True)
+    
+    name = Column(String(255), nullable=False)
+    category_type = Column(Enum(CategoryType), nullable=False)
+    emoji = Column(String(10), nullable=True)
+    color = Column(String(7), nullable=True)  # Hex color
+    description = Column(String(500), nullable=True)
+    
+    # Status
+    is_active = Column(Boolean, default=True)
+    is_default = Column(Boolean, default=False)
+    
+    # Order for UI
+    order = Column(Integer, default=0)
+    
+    # Timestamps
+    created_at = Column(DateTime, default=datetime.utcnow, nullable=False)
+    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+    
+    # Relationships
+    family = relationship("Family", back_populates="categories")
+    transactions = relationship("Transaction", back_populates="category")
+    budgets = relationship("Budget", back_populates="category")
+
+    def __repr__(self) -> str:
+        return f"<Category(id={self.id}, name={self.name}, type={self.category_type})>"