from django import forms

from .models import Expense


class ExpenseForm(forms.ModelForm):
	amount = forms.CharField(
		widget=forms.TextInput(
			attrs={
				"class": "input input-bordered w-full",
				"placeholder": "0,00",
				"inputmode": "decimal",
			}
		)
	)

	class Meta:
		model = Expense
		fields = ["concept", "amount", "category", "subcategory"]
		widgets = {
			"concept": forms.TextInput(
				attrs={
					"class": "input input-bordered w-full",
					"placeholder": "Expense description",
				}
			),
			"category": forms.Select(
				attrs={
					"class": "select select-bordered w-full",
					"data-liveview-function": "update_subcategories",
					"data-action": "change->page#run",
				}
			),
			"subcategory": forms.Select(
				attrs={
					"class": "select select-bordered w-full",
				}
			),
		}

	def clean_amount(self):
		from decimal import Decimal, InvalidOperation

		value = self.cleaned_data["amount"].replace(",", ".")
		try:
			amount = Decimal(value)
		except (InvalidOperation, ValueError):
			raise forms.ValidationError("Enter a valid amount.")
		if amount <= 0:
			raise forms.ValidationError("Amount must be greater than zero.")
		return amount