from django import forms
from django.forms import inlineformset_factory
from dal.autocomplete import ModelSelect2Multiple

from .models import Job, Question, Application, Answer


class JobForm(forms.ModelForm):
    class Meta:
        model = Job
        fields = ('title', 'description', 'tags')
        widgets = {
            'tags': ModelSelect2Multiple(url='jobs:tag-autocomplete')
        }


class QuestionForm(forms.ModelForm):
    class Meta:
        model = Question
        fields = '__all__'
        widgets = {
            'name': forms.widgets.TextInput()
        }


class ApplicationForm(forms.ModelForm):
    class Meta:
        model = Application
        exclude = ('job', 'applicant')


class AnswerForm(forms.ModelForm):
    class Meta:
        model = Answer
        fields = '__all__'

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields['text'].required = True
        self.fields['question'].disabled = True

    @classmethod
    def inlineformset_factory(cls, extra=3):
        return inlineformset_factory(
            Application,
            Answer,
            form=cls,
            min_num=extra,
            max_num=extra,
            validate_min=True,
            can_delete=False,
            can_order=False)


QuestionFormSet = inlineformset_factory(
    Job, Question, form=QuestionForm, can_delete=False, can_order=False)

QuestionUpdateFormSet = inlineformset_factory(
    Job, Question, form=QuestionForm, can_delete=True, can_order=False)