init commit

app/db/repositories/base.py

@@ -0,0 +1,64 @@
+"""Base repository with generic CRUD operations"""
+
+from typing import TypeVar, Generic, Type, List, Optional, Any
+from sqlalchemy.orm import Session
+from sqlalchemy import select
+from app.db.database import Base as SQLAlchemyBase
+
+T = TypeVar("T", bound=SQLAlchemyBase)
+
+
+class BaseRepository(Generic[T]):
+    """Generic repository for CRUD operations"""
+
+    def __init__(self, session: Session, model: Type[T]):
+        self.session = session
+        self.model = model
+
+    def create(self, **kwargs) -> T:
+        """Create and return new instance"""
+        instance = self.model(**kwargs)
+        self.session.add(instance)
+        self.session.commit()
+        self.session.refresh(instance)
+        return instance
+
+    def get_by_id(self, id: Any) -> Optional[T]:
+        """Get instance by primary key"""
+        return self.session.query(self.model).filter(self.model.id == id).first()
+
+    def get_all(self, skip: int = 0, limit: int = 100) -> List[T]:
+        """Get all instances with pagination"""
+        return (
+            self.session.query(self.model)
+            .offset(skip)
+            .limit(limit)
+            .all()
+        )
+
+    def update(self, id: Any, **kwargs) -> Optional[T]:
+        """Update instance by id"""
+        instance = self.get_by_id(id)
+        if instance:
+            for key, value in kwargs.items():
+                setattr(instance, key, value)
+            self.session.commit()
+            self.session.refresh(instance)
+        return instance
+
+    def delete(self, id: Any) -> bool:
+        """Delete instance by id"""
+        instance = self.get_by_id(id)
+        if instance:
+            self.session.delete(instance)
+            self.session.commit()
+            return True
+        return False
+
+    def exists(self, **kwargs) -> bool:
+        """Check if instance exists with given filters"""
+        return self.session.query(self.model).filter_by(**kwargs).first() is not None
+
+    def count(self, **kwargs) -> int:
+        """Count instances with given filters"""
+        return self.session.query(self.model).filter_by(**kwargs).count()