Add event themes API routes for CRUD operations

Implemented API endpoints for creating, reading, updating, and listing event themes. Integrated the new routes into the FastAPI application router under the '/event_themes' prefix.

backend/app/api/main.py

@@ -1,6 +1,7 @@
 from fastapi import APIRouter
 
 from app.api.routes import auth
-
+from app.api.routes import event_themes
 api_router = APIRouter()
 api_router.include_router(auth.router, prefix="/auth", tags=["auth"])
+api_router.include_router(event_themes.router, prefix="/event_themes", tags=["event_themes"])

backend/app/api/routes/event_themes.py

@@ -0,0 +1,68 @@
+# app/api/v1/themes/router.py
+from typing import List
+from uuid import UUID
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.orm import Session
+
+from app.core.database import get_db
+from app.crud.event_theme import event_theme
+from app.schemas.event_theme import EventThemeCreate, EventThemeResponse, EventThemeUpdate
+
+router = APIRouter()
+
+
+@router.post("/", response_model=EventThemeResponse)
+def create_theme(
+        *,
+        db: Session = Depends(get_db),
+        theme_in: EventThemeCreate
+) -> EventThemeResponse:
+    """Create new event theme."""
+    theme = event_theme.create(db, obj_in=theme_in)
+    print(theme)
+    return theme
+
+
+@router.get("/", response_model=List[EventThemeResponse])
+def list_themes(
+        db: Session = Depends(get_db),
+        skip: int = 0,
+        limit: int = 100
+) -> List[EventThemeResponse]:
+    """List event themes."""
+    themes = event_theme.get_multi(db, skip=skip, limit=limit)
+    return themes
+
+
+@router.get("/{theme_id}", response_model=EventThemeResponse)
+def get_theme(
+        *,
+        db: Session = Depends(get_db),
+        theme_id: UUID
+) -> EventThemeResponse:
+    """Get specific theme by ID."""
+    theme = event_theme.get(db, id=theme_id)
+    if not theme:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Theme not found"
+        )
+    return theme
+
+@router.patch("/{theme_id}", response_model=EventThemeResponse)
+def update_theme(
+        *,
+        db: Session = Depends(get_db),
+        theme_id: UUID,
+        theme_in: EventThemeUpdate
+) -> EventThemeResponse:
+    """Update specific theme by ID."""
+    theme = event_theme.get(db, id=theme_id)
+    if not theme:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="Theme not found"
+        )
+    theme = event_theme.update(db, db_obj=theme, obj_in=theme_in)
+    return theme