Refactored DB schema. Channels table to have uuid as primary key. Modified endpoints accordingly

app/models/__init__.py

@@ -1,4 +1,4 @@
 from .db import Base, ChannelDB
-from .schemas import ChannelCreate, ChannelResponse
+from .schemas import ChannelCreate, ChannelUpdate, ChannelResponse
 
-__all__ = ["Base", "ChannelDB", "ChannelCreate", "ChannelResponse"]
+__all__ = ["Base", "ChannelDB", "ChannelCreate", "ChannelUpdate", "ChannelResponse"]

app/models/db.py

@@ -1,5 +1,7 @@
 from datetime import datetime, timezone
-from sqlalchemy import Column, String, JSON, DateTime
+import uuid
+from sqlalchemy import Column, String, JSON, DateTime, UniqueConstraint
+from sqlalchemy.dialects.postgresql import UUID
 from sqlalchemy.ext.declarative import declarative_base
 
 Base = declarative_base()
@@ -8,10 +10,15 @@ class ChannelDB(Base):
     """SQLAlchemy model for IPTV channels"""
     __tablename__ = "channels"
 
-    tvg_id = Column(String, primary_key=True)
+    id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
+    tvg_id = Column(String, nullable=False)
     name = Column(String, nullable=False)
-    group_title = Column(String)
+    group_title = Column(String, nullable=False)
     tvg_name = Column(String)
+
+    __table_args__ = (
+        UniqueConstraint('group_title', 'name', name='uix_group_title_name'),
+    )
     tvg_logo = Column(String)
     urls = Column(JSON)  # Stores list of URLs as JSON
     created_at = Column(DateTime, default=lambda: datetime.now(timezone.utc))

app/models/schemas.py

@@ -1,5 +1,6 @@
 from datetime import datetime
 from typing import List
+from uuid import UUID
 from pydantic import BaseModel
 
 class ChannelCreate(BaseModel):
@@ -11,7 +12,15 @@ class ChannelCreate(BaseModel):
     tvg_logo: str
     tvg_name: str
 
+class ChannelUpdate(ChannelCreate):
+    """Pydantic model for updating channels"""
+    pass
+
 class ChannelResponse(ChannelCreate):
     """Pydantic model for channel responses"""
+    id: UUID
     created_at: datetime
     updated_at: datetime
+
+    class Config:
+        from_attributes = True

app/routers/channels.py

@@ -1,8 +1,10 @@
 from fastapi import APIRouter, Depends, HTTPException, status
 from sqlalchemy.orm import Session
 from typing import List
+from uuid import UUID
+from sqlalchemy import and_
 
-from app.models import ChannelDB, ChannelCreate, ChannelResponse
+from app.models import ChannelDB, ChannelCreate, ChannelUpdate, ChannelResponse
 from app.utils.database import get_db
 from app.auth.dependencies import get_current_user, require_roles
 from app.models.auth import CognitoUser
@@ -20,19 +22,33 @@ def create_channel(
     user: CognitoUser = Depends(get_current_user)
 ):
     """Create a new channel"""
+    # Check for duplicate channel (same group_title + name)
+    existing_channel = db.query(ChannelDB).filter(
+        and_(
+            ChannelDB.group_title == channel.group_title,
+            ChannelDB.name == channel.name
+        )
+    ).first()
+    
+    if existing_channel:
+        raise HTTPException(
+            status_code=status.HTTP_409_CONFLICT,
+            detail="Channel with same group_title and name already exists"
+        )
+
     db_channel = ChannelDB(**channel.model_dump())
     db.add(db_channel)
     db.commit()
     db.refresh(db_channel)
     return db_channel
 
-@router.get("/{tvg_id}", response_model=ChannelResponse)
+@router.get("/{channel_id}", response_model=ChannelResponse)
 def get_channel(
-    tvg_id: str,
+    channel_id: UUID,
     db: Session = Depends(get_db)
 ):
-    """Get a channel by tvg_id"""
+    """Get a channel by id"""
-    channel = db.query(ChannelDB).filter(ChannelDB.tvg_id == tvg_id).first()
+    channel = db.query(ChannelDB).filter(ChannelDB.id == channel_id).first()
     if not channel:
         raise HTTPException(
             status_code=status.HTTP_404_NOT_FOUND,
@@ -40,22 +56,37 @@ def get_channel(
         )
     return channel
 
-@router.put("/{tvg_id}", response_model=ChannelResponse)
+@router.put("/{channel_id}", response_model=ChannelResponse)
 @require_roles("admin")
 def update_channel(
-    tvg_id: str,
+    channel_id: UUID,
-    channel: ChannelCreate,
+    channel: ChannelUpdate,
     db: Session = Depends(get_db),
     user: CognitoUser = Depends(get_current_user)
 ):
     """Update a channel"""
-    db_channel = db.query(ChannelDB).filter(ChannelDB.tvg_id == tvg_id).first()
+    db_channel = db.query(ChannelDB).filter(ChannelDB.id == channel_id).first()
     if not db_channel:
         raise HTTPException(
             status_code=status.HTTP_404_NOT_FOUND,
             detail="Channel not found"
         )
 
+    # Check for duplicate channel (same group_title + name) excluding current channel
+    existing_channel = db.query(ChannelDB).filter(
+        and_(
+            ChannelDB.group_title == channel.group_title,
+            ChannelDB.name == channel.name,
+            ChannelDB.id != channel_id
+        )
+    ).first()
+    
+    if existing_channel:
+        raise HTTPException(
+            status_code=status.HTTP_409_CONFLICT,
+            detail="Channel with same group_title and name already exists"
+        )
+    
     for key, value in channel.model_dump().items():
         setattr(db_channel, key, value)
     
@@ -63,15 +94,15 @@ def update_channel(
     db.refresh(db_channel)
     return db_channel
 
-@router.delete("/{tvg_id}", status_code=status.HTTP_204_NO_CONTENT)
+@router.delete("/{channel_id}", status_code=status.HTTP_204_NO_CONTENT)
 @require_roles("admin")
 def delete_channel(
-    tvg_id: str,
+    channel_id: UUID,
     db: Session = Depends(get_db),
     user: CognitoUser = Depends(get_current_user)
 ):
     """Delete a channel"""
-    channel = db.query(ChannelDB).filter(ChannelDB.tvg_id == tvg_id).first()
+    channel = db.query(ChannelDB).filter(ChannelDB.id == channel_id).first()
     if not channel:
         raise HTTPException(
             status_code=status.HTTP_404_NOT_FOUND,

infrastructure/stack.py

@@ -210,6 +210,13 @@ class IptvUpdaterStack(Stack):
             "Allow PostgreSQL access from EC2 instance"
         )
         
+        # Allow PostgreSQL access from developer's IP
+        rds_sg.add_ingress_rule(
+            ec2.Peer.ipv4("47.189.88.48/32"),  # Replace with your actual IP
+            ec2.Port.tcp(5432),
+            "Allow PostgreSQL access from developer's IP"
+        )
+
         # Create RDS PostgreSQL instance (free tier compatible - db.t3.micro)
         db = rds.DatabaseInstance(
             self, "IptvUpdaterDB",