from rest_framework import serializers
from .models import (
    Tag,
    Ingredient,
    PantryItem,
    MetaRecipe,
    Slot,
    SlotOption,
    MetaRecipeBase,
    Recipe,
    RecipeIngredient,
    CookLog,
    ShoppingListItem,
)


class TagSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tag
        fields = "__all__"


class IngredientSerializer(serializers.ModelSerializer):
    tags = TagSerializer(many=True, read_only=True)
    tag_ids = serializers.PrimaryKeyRelatedField(
        queryset=Tag.objects.all(), many=True, write_only=True, source="tags", required=False
    )

    class Meta:
        model = Ingredient
        fields = "__all__"


class PantryItemSerializer(serializers.ModelSerializer):
    ingredient_name = serializers.CharField(source="ingredient.name", read_only=True)

    class Meta:
        model = PantryItem
        fields = "__all__"


# --- Meta-Recipe nested serializers ---


class SlotOptionSerializer(serializers.ModelSerializer):
    ingredient_name = serializers.CharField(source="ingredient.name", read_only=True)

    class Meta:
        model = SlotOption
        fields = "__all__"


class SlotSerializer(serializers.ModelSerializer):
    options = SlotOptionSerializer(many=True, read_only=True)

    class Meta:
        model = Slot
        fields = "__all__"


class MetaRecipeBaseSerializer(serializers.ModelSerializer):
    ingredient_name = serializers.CharField(source="ingredient.name", read_only=True)

    class Meta:
        model = MetaRecipeBase
        fields = "__all__"


class MetaRecipeSerializer(serializers.ModelSerializer):
    slots = SlotSerializer(many=True, read_only=True)
    base_ingredients = MetaRecipeBaseSerializer(many=True, read_only=True)

    class Meta:
        model = MetaRecipe
        fields = "__all__"


# --- Fixed Recipe nested serializers ---


class RecipeIngredientSerializer(serializers.ModelSerializer):
    ingredient_name = serializers.CharField(source="ingredient.name", read_only=True)

    class Meta:
        model = RecipeIngredient
        fields = "__all__"


class RecipeSerializer(serializers.ModelSerializer):
    ingredients = RecipeIngredientSerializer(many=True, read_only=True)

    class Meta:
        model = Recipe
        fields = "__all__"


# --- Cook Log & Shopping ---


class CookLogSerializer(serializers.ModelSerializer):
    meta_recipe_name = serializers.CharField(source="meta_recipe.name", read_only=True, default=None)
    recipe_name = serializers.CharField(source="recipe.name", read_only=True, default=None)

    class Meta:
        model = CookLog
        fields = "__all__"


class ShoppingListItemSerializer(serializers.ModelSerializer):
    ingredient_name = serializers.CharField(source="ingredient.name", read_only=True, default=None)

    class Meta:
        model = ShoppingListItem
        fields = "__all__"