from django.forms import ModelForm, ValidationError, modelformset_factory, BooleanField
from .models import Recipe, Version, Ingredient

class RecipeForm(ModelForm):
	class Meta:
		model = Recipe
		fields = ['title', 'slug']

class VersionForm(ModelForm):
	recipe_id: int

	def __init__(self, *args, **kwargs):
		placeholder = None
		if 'author_placeholder' in kwargs:
			placeholder = kwargs.pop('author_placeholder')
		super().__init__(*args, **kwargs)
		if placeholder:
			self.fields['author'].widget.attrs.update({'placeholder': placeholder})

	class Meta:
		model = Version
		fields = ['label', 'slug', 'body', 'author']

	def clean_slug(self):
		slug = self.cleaned_data['slug']
		if 'slug' in self.changed_data:
			recipe = Recipe.objects.get(id=self.recipe_id)
			if recipe.versions.filter(slug=slug).count() > 0: # type: ignore
				raise ValidationError('A recipe version with this slug already exists.')
		return slug

class IngredientForm(ModelForm):
	class Meta:
		model = Ingredient
		fields = ['text']

IngredientFormSet = modelformset_factory(Ingredient, fields=('text',), extra=1)