# backend/app/routers/plants.py
from typing import List, Optional
from fastapi import APIRouter, Depends, HTTPException, Query, status
from sqlmodel import Session, select
from app.database import get_session
from app.models.plant import Plant, PlantVariety, PlantWithVarieties

router = APIRouter(tags=["plantes"])


def _with_varieties(p: Plant, session: Session) -> PlantWithVarieties:
    varieties = session.exec(
        select(PlantVariety).where(PlantVariety.plant_id == p.id)
    ).all()
    data = p.model_dump()
    data["varieties"] = [v.model_dump() for v in varieties]
    return PlantWithVarieties(**data)


@router.get("/plants", response_model=List[PlantWithVarieties])
def list_plants(
    categorie: Optional[str] = Query(None),
    session: Session = Depends(get_session),
):
    q = select(Plant).order_by(Plant.nom_commun, Plant.id)
    if categorie:
        q = q.where(Plant.categorie == categorie)
    return [_with_varieties(p, session) for p in session.exec(q).all()]


@router.post("/plants", response_model=PlantWithVarieties, status_code=status.HTTP_201_CREATED)
def create_plant(p: Plant, session: Session = Depends(get_session)):
    session.add(p)
    session.commit()
    session.refresh(p)
    return _with_varieties(p, session)


@router.get("/plants/{id}", response_model=PlantWithVarieties)
def get_plant(id: int, session: Session = Depends(get_session)):
    p = session.get(Plant, id)
    if not p:
        raise HTTPException(404, "Plante introuvable")
    return _with_varieties(p, session)


@router.put("/plants/{id}", response_model=PlantWithVarieties)
def update_plant(id: int, data: Plant, session: Session = Depends(get_session)):
    p = session.get(Plant, id)
    if not p:
        raise HTTPException(404, "Plante introuvable")
    for k, v in data.model_dump(exclude_unset=True, exclude={"id", "created_at"}).items():
        setattr(p, k, v)
    session.add(p)
    session.commit()
    session.refresh(p)
    return _with_varieties(p, session)


@router.delete("/plants/{id}", status_code=status.HTTP_204_NO_CONTENT)
def delete_plant(id: int, session: Session = Depends(get_session)):
    p = session.get(Plant, id)
    if not p:
        raise HTTPException(404, "Plante introuvable")
    for v in session.exec(select(PlantVariety).where(PlantVariety.plant_id == id)).all():
        session.delete(v)
    session.delete(p)
    session.commit()


# ---- CRUD Variétés ----

@router.get("/plants/{id}/varieties", response_model=List[PlantVariety])
def list_varieties(id: int, session: Session = Depends(get_session)):
    if not session.get(Plant, id):
        raise HTTPException(404, "Plante introuvable")
    return session.exec(select(PlantVariety).where(PlantVariety.plant_id == id)).all()


@router.post("/plants/{id}/varieties", response_model=PlantVariety, status_code=status.HTTP_201_CREATED)
def create_variety(id: int, v: PlantVariety, session: Session = Depends(get_session)):
    if not session.get(Plant, id):
        raise HTTPException(404, "Plante introuvable")
    v.plant_id = id
    session.add(v)
    session.commit()
    session.refresh(v)
    return v


@router.put("/plants/{id}/varieties/{vid}", response_model=PlantVariety)
def update_variety(id: int, vid: int, data: PlantVariety, session: Session = Depends(get_session)):
    v = session.get(PlantVariety, vid)
    if not v or v.plant_id != id:
        raise HTTPException(404, "Variété introuvable")
    for k, val in data.model_dump(exclude_unset=True, exclude={"id", "plant_id", "created_at"}).items():
        setattr(v, k, val)
    session.add(v)
    session.commit()
    session.refresh(v)
    return v


@router.delete("/plants/{id}/varieties/{vid}", status_code=status.HTTP_204_NO_CONTENT)
def delete_variety(id: int, vid: int, session: Session = Depends(get_session)):
    v = session.get(PlantVariety, vid)
    if not v or v.plant_id != id:
        raise HTTPException(404, "Variété introuvable")
    session.delete(v)
    session.commit()