Full app rebuild: FastAPI backend + React Native mobile with auth, championships, admin

Backend (FastAPI + SQLAlchemy + SQLite):
- JWT auth with access/refresh tokens, bcrypt password hashing
- User model with member/organizer/admin roles, auto-approve members
- Championship, Registration, ParticipantList, Notification models
- Alembic async migrations, seed data with test users
- Registration endpoint returns tokens for members, pending for organizers
- /registrations/my returns championship title/date/location via eager loading
- Admin endpoints: list users, approve/reject organizers

Mobile (React Native + Expo + TypeScript):
- Zustand auth store, Axios client with token refresh interceptor
- Role-based registration (Member vs Organizer) with contextual form labels
- Tab navigation with Ionicons, safe area headers, admin tab for admin role
- Championships list with status badges, detail screen with registration progress
- My Registrations with championship title, progress bar, and tap-to-navigate
- Admin panel with pending/all filter, approve/reject with confirmation
- Profile screen with role badge, Ionicons info rows, sign out
- Password visibility toggle (Ionicons), keyboard flow hints (returnKeyType)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/app/crud/__init__.py

@@ -0,0 +1,3 @@
+from app.crud import crud_user, crud_championship, crud_registration, crud_participant
+
+__all__ = ["crud_user", "crud_championship", "crud_registration", "crud_participant"]

backend/app/crud/crud_championship.py

@@ -0,0 +1,63 @@
+import json
+import uuid
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.championship import Championship
+from app.schemas.championship import ChampionshipCreate, ChampionshipUpdate
+
+
+def _serialize(value) -> str | None:
+    if value is None:
+        return None
+    return json.dumps(value)
+
+
+async def get(db: AsyncSession, champ_id: str | uuid.UUID) -> Championship | None:
+    cid = champ_id if isinstance(champ_id, uuid.UUID) else uuid.UUID(str(champ_id))
+    result = await db.execute(select(Championship).where(Championship.id == cid))
+    return result.scalar_one_or_none()
+
+
+async def list_all(
+    db: AsyncSession,
+    status: str | None = None,
+    skip: int = 0,
+    limit: int = 50,
+) -> list[Championship]:
+    q = select(Championship).order_by(Championship.event_date.asc())
+    if status:
+        q = q.where(Championship.status == status)
+    q = q.offset(skip).limit(limit)
+    result = await db.execute(q)
+    return list(result.scalars().all())
+
+
+async def create(db: AsyncSession, data: ChampionshipCreate) -> Championship:
+    payload = data.model_dump(exclude={"judges", "categories"})
+    payload["judges"] = _serialize(data.judges)
+    payload["categories"] = _serialize(data.categories)
+    champ = Championship(**payload)
+    db.add(champ)
+    await db.commit()
+    await db.refresh(champ)
+    return champ
+
+
+async def update(db: AsyncSession, champ: Championship, data: ChampionshipUpdate) -> Championship:
+    raw = data.model_dump(exclude_none=True, exclude={"judges", "categories"})
+    for field, value in raw.items():
+        setattr(champ, field, value)
+    if data.judges is not None:
+        champ.judges = _serialize(data.judges)
+    if data.categories is not None:
+        champ.categories = _serialize(data.categories)
+    await db.commit()
+    await db.refresh(champ)
+    return champ
+
+
+async def delete(db: AsyncSession, champ: Championship) -> None:
+    await db.delete(champ)
+    await db.commit()

backend/app/crud/crud_participant.py

@@ -0,0 +1,34 @@
+import uuid
+from datetime import UTC, datetime
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.participant import ParticipantList
+
+
+async def get_for_championship(db: AsyncSession, championship_id: str | uuid.UUID) -> ParticipantList | None:
+    cid = championship_id if isinstance(championship_id, uuid.UUID) else uuid.UUID(str(championship_id))
+    result = await db.execute(select(ParticipantList).where(ParticipantList.championship_id == cid))
+    return result.scalar_one_or_none()
+
+
+async def create_or_get(db: AsyncSession, championship_id: uuid.UUID, published_by: uuid.UUID) -> ParticipantList:
+    existing = await get_for_championship(db, championship_id)
+    if existing:
+        return existing
+    pl = ParticipantList(championship_id=championship_id, published_by=published_by)
+    db.add(pl)
+    await db.commit()
+    await db.refresh(pl)
+    return pl
+
+
+async def publish(db: AsyncSession, pl: ParticipantList, notes: str | None = None) -> ParticipantList:
+    pl.is_published = True
+    pl.published_at = datetime.now(UTC)
+    if notes is not None:
+        pl.notes = notes
+    await db.commit()
+    await db.refresh(pl)
+    return pl

backend/app/crud/crud_registration.py

@@ -0,0 +1,86 @@
+import uuid
+from datetime import UTC, datetime
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.orm import selectinload
+
+from app.models.registration import Registration
+from app.schemas.registration import RegistrationCreate, RegistrationUpdate
+
+
+async def get(db: AsyncSession, reg_id: str | uuid.UUID) -> Registration | None:
+    rid = reg_id if isinstance(reg_id, uuid.UUID) else uuid.UUID(str(reg_id))
+    result = await db.execute(
+        select(Registration).where(Registration.id == rid).options(selectinload(Registration.user))
+    )
+    return result.scalar_one_or_none()
+
+
+async def get_by_user_and_championship(
+    db: AsyncSession, user_id: uuid.UUID, championship_id: uuid.UUID
+) -> Registration | None:
+    result = await db.execute(
+        select(Registration).where(
+            Registration.user_id == user_id,
+            Registration.championship_id == championship_id,
+        )
+    )
+    return result.scalar_one_or_none()
+
+
+async def list_for_championship(
+    db: AsyncSession, championship_id: str | uuid.UUID, skip: int = 0, limit: int = 100
+) -> list[Registration]:
+    cid = championship_id if isinstance(championship_id, uuid.UUID) else uuid.UUID(str(championship_id))
+    result = await db.execute(
+        select(Registration)
+        .where(Registration.championship_id == cid)
+        .options(selectinload(Registration.user))
+        .offset(skip)
+        .limit(limit)
+    )
+    return list(result.scalars().all())
+
+
+async def list_for_user(db: AsyncSession, user_id: uuid.UUID, skip: int = 0, limit: int = 50) -> list[Registration]:
+    result = await db.execute(
+        select(Registration)
+        .where(Registration.user_id == user_id)
+        .options(selectinload(Registration.championship))
+        .order_by(Registration.submitted_at.desc())
+        .offset(skip)
+        .limit(limit)
+    )
+    return list(result.scalars().all())
+
+
+async def create(db: AsyncSession, user_id: uuid.UUID, data: RegistrationCreate) -> Registration:
+    reg = Registration(
+        championship_id=data.championship_id,
+        user_id=user_id,
+        category=data.category,
+        level=data.level,
+        notes=data.notes,
+        status="submitted",
+    )
+    db.add(reg)
+    await db.commit()
+    await db.refresh(reg)
+    return reg
+
+
+async def update(db: AsyncSession, reg: Registration, data: RegistrationUpdate) -> Registration:
+    raw = data.model_dump(exclude_none=True)
+    for field, value in raw.items():
+        setattr(reg, field, value)
+    if "status" in raw and raw["status"] in ("accepted", "rejected", "waitlisted"):
+        reg.decided_at = datetime.now(UTC)
+    await db.commit()
+    await db.refresh(reg)
+    return reg
+
+
+async def delete(db: AsyncSession, reg: Registration) -> None:
+    await db.delete(reg)
+    await db.commit()

backend/app/crud/crud_user.py

@@ -0,0 +1,57 @@
+import uuid
+
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models.user import User
+from app.schemas.user import UserRegister, UserUpdate
+from app.services.auth_service import hash_password
+
+
+async def get_by_id(db: AsyncSession, user_id: str | uuid.UUID) -> User | None:
+    uid = user_id if isinstance(user_id, uuid.UUID) else uuid.UUID(str(user_id))
+    result = await db.execute(select(User).where(User.id == uid))
+    return result.scalar_one_or_none()
+
+
+async def get_by_email(db: AsyncSession, email: str) -> User | None:
+    result = await db.execute(select(User).where(User.email == email.lower()))
+    return result.scalar_one_or_none()
+
+
+async def create(db: AsyncSession, data: UserRegister) -> User:
+    user = User(
+        email=data.email.lower(),
+        hashed_password=hash_password(data.password),
+        full_name=data.full_name,
+        phone=data.phone,
+        role=data.requested_role,
+        organization_name=data.organization_name,
+        instagram_handle=data.instagram_handle,
+        # Members are auto-approved; organizers require admin review
+        status="approved" if data.requested_role == "member" else "pending",
+    )
+    db.add(user)
+    await db.commit()
+    await db.refresh(user)
+    return user
+
+
+async def update(db: AsyncSession, user: User, data: UserUpdate) -> User:
+    for field, value in data.model_dump(exclude_none=True).items():
+        setattr(user, field, value)
+    await db.commit()
+    await db.refresh(user)
+    return user
+
+
+async def set_status(db: AsyncSession, user: User, status: str) -> User:
+    user.status = status
+    await db.commit()
+    await db.refresh(user)
+    return user
+
+
+async def list_all(db: AsyncSession, skip: int = 0, limit: int = 100) -> list[User]:
+    result = await db.execute(select(User).offset(skip).limit(limit))
+    return list(result.scalars().all())