from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session, joinedload
from app.database import get_db
from app.models import Recipe, FamilyProfile
from app.schemas import RecipeResponse, RecipeCreate, IngredientCreate, IngredientResponse
from uuid import UUID
from typing import List, Optional

router = APIRouter()


@router.get("/", response_model=List[RecipeResponse])
def get_recipes(
    skip: int = 0,
    limit: int = 50,
    cuisine_tag: Optional[str] = None,
    dietary_tag: Optional[str] = None,
    protein_type: Optional[str] = None,
    db: Session = Depends(get_db)
):
    query = db.query(Recipe)

    if cuisine_tag:
        query = query.filter(Recipe.cuisine_tags.contains([cuisine_tag]))
    if dietary_tag:
        query = query.filter(Recipe.dietary_tags.contains([dietary_tag]))
    if protein_type:
        query = query.filter(Recipe.protein_type == protein_type)

    recipes = query.offset(skip).limit(limit).all()
    return recipes


@router.get("/{recipe_id}", response_model=RecipeResponse)
def get_recipe(recipe_id: UUID, db: Session = Depends(get_db)):
    recipe = db.query(Recipe).filter(Recipe.id == recipe_id).first()
    if not recipe:
        raise HTTPException(status_code=404, detail="Recipe not found")
    return recipe


@router.post("/", response_model=RecipeResponse)
def create_recipe(recipe: RecipeCreate, db: Session = Depends(get_db)):
    profile = db.query(FamilyProfile).first()

    db_recipe = Recipe(
        family_profile_id=profile.id if profile else None,
        name=recipe.name,
        description=recipe.description,
        image_url=recipe.image_url,
        image_source=recipe.image_source,
        prep_time_minutes=recipe.prep_time_minutes,
        cook_time_minutes=recipe.cook_time_minutes,
        servings=recipe.servings,
        servings_scaled=recipe.servings_scaled,
        cuisine_tags=recipe.cuisine_tags,
        dietary_tags=recipe.dietary_tags,
        protein_type=recipe.protein_type,
        spice_level=recipe.spice_level,
        ingredients=[ing.model_dump() for ing in recipe.ingredients],
        instructions=recipe.instructions,
        source_url=recipe.source_url,
        is_manually_added=recipe.is_manually_added
    )

    db.add(db_recipe)
    db.commit()
    db.refresh(db_recipe)
    return db_recipe


@router.delete("/{recipe_id}")
def delete_recipe(recipe_id: UUID, db: Session = Depends(get_db)):
    recipe = db.query(Recipe).filter(Recipe.id == recipe_id).first()
    if not recipe:
        raise HTTPException(status_code=404, detail="Recipe not found")

    db.delete(recipe)
    db.commit()
    return {"message": "Recipe deleted"}


@router.get("/ingredients/list", response_model=List[IngredientResponse])
def list_ingredients(skip: int = 0, limit: int = 100, db: Session = Depends(get_db)):
    from app.models import Ingredient
    ingredients = db.query(Ingredient).offset(skip).limit(limit).all()
    return ingredients


@router.post("/ingredients", response_model=IngredientResponse)
def create_ingredient(ingredient: IngredientCreate, db: Session = Depends(get_db)):
    from app.models import Ingredient

    existing = db.query(Ingredient).filter(Ingredient.name_lower == ingredient.name_lower).first()
    if existing:
        raise HTTPException(status_code=400, detail="Ingredient with this name already exists")

    db_ingredient = Ingredient(
        name=ingredient.name,
        name_lower=ingredient.name_lower,
        plural_name=ingredient.plural_name,
        aisle=ingredient.aisle,
        typical_price=ingredient.typical_price,
        unit=ingredient.unit,
        season_months=ingredient.season_months
    )

    db.add(db_ingredient)
    db.commit()
    db.refresh(db_ingredient)
    return db_ingredient