from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session

from app.auth import get_current_admin
from app.database import get_db
from app import models, schemas

router = APIRouter(prefix="/api/articles", tags=["Articles"])


@router.get("", response_model=list[schemas.ArticleOut])
def list_articles(category: str | None = None, db: Session = Depends(get_db)):
    query = db.query(models.Article)
    if category:
        query = query.filter(models.Article.category == category)
    return query.order_by(models.Article.order).all()


@router.get("/{slug}", response_model=schemas.ArticleOut)
def get_article(slug: str, db: Session = Depends(get_db)):
    article = db.query(models.Article).filter(models.Article.slug == slug).first()
    if not article:
        raise HTTPException(status.HTTP_404_NOT_FOUND, "مقاله پیدا نشد")
    return article


@router.post("", response_model=schemas.ArticleOut, status_code=status.HTTP_201_CREATED)
def create_article(
    payload: schemas.ArticleCreate,
    db: Session = Depends(get_db),
    _admin=Depends(get_current_admin),
):
    if db.query(models.Article).filter(models.Article.slug == payload.slug).first():
        raise HTTPException(status.HTTP_400_BAD_REQUEST, "این slug قبلاً استفاده شده است")
    article = models.Article(**payload.model_dump())
    db.add(article)
    db.commit()
    db.refresh(article)
    return article


@router.put("/{article_id}", response_model=schemas.ArticleOut)
def update_article(
    article_id: int,
    payload: schemas.ArticleUpdate,
    db: Session = Depends(get_db),
    _admin=Depends(get_current_admin),
):
    article = db.get(models.Article, article_id)
    if not article:
        raise HTTPException(status.HTTP_404_NOT_FOUND, "مقاله پیدا نشد")
    for field, value in payload.model_dump(exclude_unset=True).items():
        setattr(article, field, value)
    db.commit()
    db.refresh(article)
    return article


@router.delete("/{article_id}", status_code=status.HTTP_204_NO_CONTENT)
def delete_article(
    article_id: int,
    db: Session = Depends(get_db),
    _admin=Depends(get_current_admin),
):
    article = db.get(models.Article, article_id)
    if not article:
        raise HTTPException(status.HTTP_404_NOT_FOUND, "مقاله پیدا نشد")
    db.delete(article)
    db.commit()
    return None