from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session, joinedload
from uuid import UUID
from backend.database import get_db
from backend import models
from backend.schemas import TripItemOut

router = APIRouter(prefix="/trip-items", tags=["trip-items"])

@router.get("/by-trip/{trip_id}", response_model=list[TripItemOut])
def list_trip_items(trip_id: UUID, db: Session = Depends(get_db)):
    trip = db.get(models.Trip, trip_id)
    if not trip:
        raise HTTPException(status_code=404, detail="Trip not found")
    items = (
        db.query(models.TripItem)
        .options(joinedload(models.TripItem.tag))
        .filter(models.TripItem.trip_id == trip_id)
        .all()
    )
    return [
        TripItemOut(
            id=ti.id,
            trip_id=ti.trip_id,
            item_id=ti.item_id,
            name_calculated=ti.name_calculated,
            checked=ti.checked,
            tag=ti.tag,
        ) for ti in items
    ]

@router.post("/{trip_item_id}/toggle", response_model=TripItemOut)
def toggle_trip_item(trip_item_id: UUID, db: Session = Depends(get_db)):
    ti = (
        db.query(models.TripItem)
        .options(joinedload(models.TripItem.tag))
        .get(trip_item_id)
    )
    if not ti:
        raise HTTPException(status_code=404, detail="TripItem not found")
    ti.checked = not ti.checked
    db.commit()
    db.refresh(ti)
    return TripItemOut(
        id=ti.id,
        trip_id=ti.trip_id,
        item_id=ti.item_id,
        name_calculated=ti.name_calculated,
        checked=ti.checked,
        tag=ti.tag,
    )