from django import forms

from .models import PaymentConfirmation


class PaymentConfirmationForm(forms.ModelForm):
    class Meta:
        model = PaymentConfirmation
        fields = [
            "product",
            "customer_name",
            "customer_phone",
            "customer_email",
            "amount",
            "method",
            "reference",
            "note",
            "receipt",
        ]
        widgets = {
            "product": forms.Select(attrs={"class": "form-select"}),
            "customer_name": forms.TextInput(attrs={"class": "form-control", "placeholder": "Tu nombre o negocio"}),
            "customer_phone": forms.TextInput(attrs={"class": "form-control", "placeholder": "+53..."}),
            "customer_email": forms.EmailInput(attrs={"class": "form-control", "placeholder": "correo@ejemplo.com"}),
            "amount": forms.NumberInput(attrs={"class": "form-control", "min": "1", "step": "0.01", "placeholder": "Monto pagado"}),
            "method": forms.Select(attrs={"class": "form-select"}),
            "reference": forms.TextInput(attrs={"class": "form-control", "placeholder": "No. operación / referencia"}),
            "note": forms.Textarea(attrs={"class": "form-control", "rows": 4, "placeholder": "Detalles útiles: fecha, banco, servicio solicitado..."}),
            "receipt": forms.ClearableFileInput(attrs={"class": "form-control"}),
        }
        labels = {
            "product": "Producto o servicio",
            "customer_name": "Nombre",
            "customer_phone": "Teléfono / WhatsApp",
            "customer_email": "Correo (opcional)",
            "amount": "Monto pagado",
            "method": "Método de pago",
            "reference": "Referencia de pago",
            "note": "Nota para el equipo",
            "receipt": "Comprobante (opcional)",
        }

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["product"].queryset = self.fields["product"].queryset.filter(is_active=True).select_related("category")
        self.fields["product"].empty_label = "Selecciona un servicio"

    def clean_customer_phone(self):
        phone = self.cleaned_data["customer_phone"].strip()
        digits = [char for char in phone if char.isdigit()]
        if len(digits) < 8:
            raise forms.ValidationError("Escribe un teléfono válido para poder contactarte.")
        return phone

    def clean_reference(self):
        reference = self.cleaned_data["reference"].strip()
        if len(reference) < 4:
            raise forms.ValidationError("La referencia debe tener al menos 4 caracteres.")
        return reference