Adds Underwriter's carousel and admin features

backend/app/api/underwriters.py

@@ -0,0 +1,79 @@
+from typing import Optional
+
+from fastapi import APIRouter, Depends, Query
+from sqlalchemy import select
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.auth import get_current_admin_user
+from app.database import get_session
+from app.models import Underwriter
+from app.schemas import UnderwriterCreate, UnderwriterUpdate, UnderwriterResponse
+from app.user_models import User
+
+router = APIRouter()
+
+
+@router.get("/", response_model=list[UnderwriterResponse])
+async def list_underwriters(
+    active: Optional[bool] = Query(None, description="Filter by active status"),
+    session: AsyncSession = Depends(get_session),
+):
+    query = select(Underwriter).order_by(Underwriter.display_order)
+    if active is not None:
+        query = query.where(Underwriter.active == active)
+    result = await session.execute(query)
+    return list(result.scalars().all())
+
+
+@router.get("/{underwriter_id}", response_model=UnderwriterResponse)
+async def get_underwriter(underwriter_id: int, session: AsyncSession = Depends(get_session)):
+    result = await session.execute(select(Underwriter).where(Underwriter.id == underwriter_id))
+    uw = result.scalar_one_or_none()
+    if not uw:
+        return {"error": "Underwriter not found"}
+    return uw
+
+
+@router.post("/", response_model=UnderwriterResponse, status_code=201)
+async def create_underwriter(
+    payload: UnderwriterCreate,
+    session: AsyncSession = Depends(get_session),
+    _: User = Depends(get_current_admin_user),
+):
+    uw = Underwriter(**payload.model_dump(), active=True)
+    session.add(uw)
+    await session.commit()
+    await session.refresh(uw)
+    return uw
+
+
+@router.put("/{underwriter_id}", response_model=UnderwriterResponse)
+async def update_underwriter(
+    underwriter_id: int,
+    payload: UnderwriterUpdate,
+    session: AsyncSession = Depends(get_session),
+    _: User = Depends(get_current_admin_user),
+):
+    result = await session.execute(select(Underwriter).where(Underwriter.id == underwriter_id))
+    uw = result.scalar_one_or_none()
+    if not uw:
+        return {"error": "Underwriter not found"}
+    for key, value in payload.model_dump(exclude_unset=True).items():
+        setattr(uw, key, value)
+    await session.commit()
+    await session.refresh(uw)
+    return uw
+
+
+@router.delete("/{underwriter_id}", status_code=204)
+async def delete_underwriter(
+    underwriter_id: int,
+    session: AsyncSession = Depends(get_session),
+    _: User = Depends(get_current_admin_user),
+):
+    result = await session.execute(select(Underwriter).where(Underwriter.id == underwriter_id))
+    uw = result.scalar_one_or_none()
+    if not uw:
+        return {"error": "Underwriter not found"}
+    await session.delete(uw)
+    await session.commit()