Initial commit: AI Dungeon clone (FastAPI backend + React frontend)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KFsGHju9szibJJa2YJcdbg

backend/app/routers/story_cards.py

@@ -0,0 +1,57 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+
+from .. import models, schemas
+from ..database import get_db
+
+router = APIRouter(prefix="/api/story-cards", tags=["story-cards"])
+
+
+@router.get("", response_model=list[schemas.StoryCardOut])
+def list_story_cards(
+    scenario_id: int | None = None,
+    adventure_id: int | None = None,
+    db: Session = Depends(get_db),
+):
+    query = db.query(models.StoryCard)
+    if scenario_id is not None:
+        query = query.filter(models.StoryCard.scenario_id == scenario_id)
+    if adventure_id is not None:
+        query = query.filter(models.StoryCard.adventure_id == adventure_id)
+    return query.order_by(models.StoryCard.id).all()
+
+
+@router.post("", response_model=schemas.StoryCardOut, status_code=201)
+def create_story_card(payload: schemas.StoryCardCreate, db: Session = Depends(get_db)):
+    if (payload.scenario_id is None) == (payload.adventure_id is None):
+        raise HTTPException(422, "Provide exactly one of scenario_id or adventure_id")
+    owner_model = models.Scenario if payload.scenario_id else models.Adventure
+    owner_id = payload.scenario_id or payload.adventure_id
+    if db.get(owner_model, owner_id) is None:
+        raise HTTPException(404, "Owner not found")
+    card = models.StoryCard(**payload.model_dump())
+    db.add(card)
+    db.commit()
+    return card
+
+
+@router.patch("/{card_id}", response_model=schemas.StoryCardOut)
+def update_story_card(
+    card_id: int, payload: schemas.StoryCardUpdate, db: Session = Depends(get_db)
+):
+    card = db.get(models.StoryCard, card_id)
+    if card is None:
+        raise HTTPException(404, "Story card not found")
+    for field, value in payload.model_dump(exclude_unset=True).items():
+        setattr(card, field, value)
+    db.commit()
+    return card
+
+
+@router.delete("/{card_id}", status_code=204)
+def delete_story_card(card_id: int, db: Session = Depends(get_db)):
+    card = db.get(models.StoryCard, card_id)
+    if card is None:
+        raise HTTPException(404, "Story card not found")
+    db.delete(card)
+    db.commit()