from django import forms
from django.core.exceptions import ValidationError
from django.contrib.auth.models import User

from dal import autocomplete

from .models import Reload, Refund, Product, Keg, Menu
from preferences.models import PaymentMethod

class ReloadForm(forms.ModelForm):
    """
    A form to create a :class:`~gestion.models.Reload`.
    """
    def __init__(self, *args, **kwargs):
        super(ReloadForm, self).__init__(*args, **kwargs)
        self.fields['PaymentMethod'].queryset = PaymentMethod.objects.filter(is_usable_in_reload=True).filter(is_active=True)
        
    class Meta:
        model = Reload
        fields = ("customer", "amount", "PaymentMethod")
        widgets = {'customer': autocomplete.ModelSelect2(url='users:active-users-autocomplete', attrs={'data-minimum-input-length':2}), 'amount': forms.TextInput}


class RefundForm(forms.ModelForm):
    """
    A form to create a :class:`~gestion.models.Refund`.
    """
    class Meta:
        model = Refund
        fields = ("customer", "amount")
        widgets = {'customer': autocomplete.ModelSelect2(url='users:active-users-autocomplete', attrs={'data-minimum-input-length':2}), 'amount': forms.TextInput}


class ProductForm(forms.ModelForm):
    """
    A form to create and edit a :class:`~gestion.models.Product`.
    """
    class Meta:
        model = Product
        fields = "__all__"
        widgets = {'amount': forms.TextInput}

class KegForm(forms.ModelForm):
    """
    A form to create and edit a :class:`~gestion.models.Keg`.
    """
    def __init__(self, *args, **kwargs):
        super(KegForm, self).__init__(*args, **kwargs)
        self.fields['pinte'].queryset = Product.objects.filter(category=Product.P_PRESSION)
        self.fields['demi'].queryset = Product.objects.filter(category=Product.D_PRESSION)
        self.fields['galopin'].queryset = Product.objects.filter(category=Product.G_PRESSION)

    class Meta:
        model = Keg
        exclude = ("is_active", )
        widgets = {'amount': forms.TextInput}

class MenuForm(forms.ModelForm):
    """
    A form to create and edit a :class:`~gestion.models.Menu`.
    """
    class Meta:
        model = Menu
        fields = "__all__"
        widgets = {'amount': forms.TextInput}

class SearchProductForm(forms.Form):
    """
    A form to search a :class:`~gestion.models.Product`.
    """
    product = forms.ModelChoiceField(queryset=Product.objects.all(), required=True, label="Produit", widget=autocomplete.ModelSelect2(url='gestion:products-autocomplete', attrs={'data-minimum-input-length':2}))

class SearchMenuForm(forms.Form):
    """
    A form to search a :class:`~gestion.models.Menu`.
    """
    menu = forms.ModelChoiceField(queryset=Menu.objects.all(), required=True, label="Menu", widget=autocomplete.ModelSelect2(url='gestion:menus-autocomplete', attrs={'data-minimum-input-length':2}))

class GestionForm(forms.Form):
    """
    A form for the :func:`~gestion.views.manage` view.
    """
    client = forms.ModelChoiceField(queryset=User.objects.filter(is_active=True), required=True, label="Client", widget=autocomplete.ModelSelect2(url='users:active-users-autocomplete', attrs={'data-minimum-input-length':2}))
    product = forms.ModelChoiceField(queryset=Product.objects.filter(is_active=True), required=True, label="Produit", widget=autocomplete.ModelSelect2(url='gestion:active-products-autocomplete', attrs={'data-minimum-input-length':2}))

class SelectPositiveKegForm(forms.Form):
    """
    A form to search a :class:`~gestion.models.Keg` with a positive stockhold.
    """
    keg = forms.ModelChoiceField(queryset=Keg.objects.filter(stockHold__gt = 0), required=True, label="Fût", widget=autocomplete.ModelSelect2(url='gestion:kegs-positive-autocomplete'))

class SelectActiveKegForm(forms.Form):
    """
    A form to search an active :class:`~gestion.models.Keg`.
    """
    keg = forms.ModelChoiceField(queryset=Keg.objects.filter(is_active = True), required=True, label="Fût", widget=autocomplete.ModelSelect2(url='gestion:kegs-active-autocomplete'))

class PinteForm(forms.Form):
    """
    A form to free :class:`Pints <gestion.models.Pinte>`.
    """
    ids = forms.CharField(widget=forms.Textarea, label="Numéros", help_text="Numéros séparés par un espace. Laissez vide pour utiliser le range.", required=False)
    begin = forms.IntegerField(label="Début", help_text="Début du range", required=False)
    end = forms.IntegerField(label="Fin", help_text="Fin du range", required=False)

class GenerateReleveForm(forms.Form):
    """
    A form to generate a releve.
    """
    begin = forms.DateTimeField(label="Date de début")
    end = forms.DateTimeField(label="Date de fin")