from django import forms
from django.utils.translation import gettext_lazy as _
from django_scopes.forms import SafeModelChoiceField, SafeModelMultipleChoiceField
from i18nfield.forms import I18nModelForm
from pretalx.person.models import User
from pretalx.submission.forms import SubmissionFilterForm

from .models import Assignee, MusicrateSettings, Rating


class MusicrateSettingsForm(I18nModelForm):
    def __init__(self, *args, event=None, **kwargs):
        self.instance, _ = MusicrateSettings.objects.get_or_create(event=event)
        super().__init__(*args, **kwargs, instance=self.instance, locales=event.locales)
        if not event.submission_types.count():
            self.fields.pop("submission_types")
        else:
            self.fields["submission_types"].queryset = event.submission_types.all()
        self.fields["genre_question"].queryset = (
            event.questions.exclude(pk=self.instance.origin_question.pk)
            if self.instance.origin_question
            else event.questions.all()
        )
        self.fields["origin_question"].queryset = (
            event.questions.exclude(pk=self.instance.genre_question.pk)
            if self.instance.genre_question
            else event.questions.all()
        )
        self.fields["link_questions"].queryset = event.questions.all()

    class Meta:
        model = MusicrateSettings
        fields = (
            "submission_types",
            "genre_question",
            "origin_question",
            "link_questions",
            "advance_threshold",
        )
        widgets = {
            "submission_types": forms.SelectMultiple(attrs={"class": "select2"}),
            "genre_question": forms.Select(attrs={"class": "select2"}),
            "origin_question": forms.Select(attrs={"class": "select2"}),
            "link_questions": forms.SelectMultiple(attrs={"class": "select2"}),
        }
        field_classes = {
            "submission_types": SafeModelMultipleChoiceField,
            "genre_question": SafeModelChoiceField,
            "origin_question": SafeModelChoiceField,
            "link_questions": SafeModelMultipleChoiceField,
        }


class RatingForm(forms.ModelForm):
    rating = forms.ChoiceField(
        choices=Rating.RATING_CHOICES, required=False, widget=forms.RadioSelect
    )

    class Meta:
        model = Rating
        fields = ("rating",)


class AssigneeForm(forms.ModelForm):
    def __init__(self, *args, submission=None, **kwargs):
        try:
            self.instance = Assignee.objects.get(submission=submission)
        except Assignee.DoesNotExist:
            self.instance = Assignee(submission=submission)
        super().__init__(*args, instance=self.instance, **kwargs)
        self.fields["user"].queryset = User.objects.none().union(
            *(
                t.members.all()
                for t in submission.event.teams.filter(can_change_submissions=True)
            )
        )

    class Meta:
        model = Assignee
        fields = ("user",)
        widgets = {"user": forms.Select(attrs={"class": "select2"})}


class EnhancedSubmissionFilterForm(SubmissionFilterForm):
    require_all_tags = forms.BooleanField(required=False, label=_("require all"))

    def filter_queryset(self, qs):
        qs = super().filter_queryset(qs)
        if self.cleaned_data.get("require_all_tags"):
            for tag in self.cleaned_data.get("tags"):
                qs = qs.filter(tags__in=[tag])
        return qs