import itertools
from django import forms

from common.models import Location, LiveImageUpload
from .models import WorkSell, WorkSellPhoto
from specializations.models import Specialization


class ContractorWorkSellTrashForm(forms.Form):
    pk = forms.ModelChoiceField(queryset=WorkSell.objects.none())

    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop('request')
        super().__init__(*args, **kwargs)

        self.fields['pk'].queryset = self.request.user.work_sell.all()


class WorkSellForm(forms.ModelForm):
    # Define a form field manually for a reverse model vield:
    
    photos = forms.ModelMultipleChoiceField(
        queryset=WorkSellPhoto.objects.none(),
        widget=forms.CheckboxSelectMultiple,
        required=False,
    )
    
    live_images = forms.ModelMultipleChoiceField(
        queryset=LiveImageUpload.objects.all(),
        widget=forms.CheckboxSelectMultiple,
        required=False,
    )
    
    class Meta:
        model = WorkSell

        fields = (
            'building_classification',
            'construction_type',
            'specialization',
            
            'budget',
            'currency',
            'description',
            'name',
            'term',
            'term_type',
            'work_type',
        )
        
        widgets = {
            'building_classification': forms.Select(attrs={'class': 'selectpicker'}),
            'construction_type': forms.Select(attrs={'class': 'selectpicker'}),
            'currency': forms.Select(attrs={'class': 'selectpicker'}),
            'term_type': forms.Select(attrs={'class': 'selectpicker'}),
            'work_type': forms.Select(attrs={'class': 'selectpicker -project-work-type-select-field'}),
        }

    def __init__(self, *args, **kwargs):
        # self.request = kwargs.pop('request')
        super().__init__(*args, **kwargs)
        
        self.fields['photos'].queryset = self.instance.photos.all()


class WorkSellFilterForm(forms.ModelForm):
    keywords = forms.CharField(required=False, max_length=255)

    class Meta:
        model = WorkSell
        fields = (
            'location',
            'building_classification',
            'construction_type',
            'specialization',
        )

        widgets = {
            'building_classification': forms.Select(attrs={'class': 'selectpicker'}),
            'construction_type': forms.Select(attrs={'class': 'selectpicker'}),
        }

    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop('request')
        super().__init__(*args, **kwargs)

        self.fields['specialization'].required = False

        self.fields['specialization'].queryset = Specialization.objects.root_nodes()[0].get_descendants()