from django import forms
from django.core.exceptions import ValidationError

from manuels.models import Book, Level, SuppliesRequirement


class EditBookForm(forms.ModelForm):
    class Meta:
        model = Book
        fields = [
            "teacher",
            "level",
            "field",
            "no_book",
            "see_later",
            "title",
            "authors",
            "editor",
            "other_editor",
            "publication_year",
            "isbn",
            "price",
            "previously_acquired",
            "comments",
            "consumable",
        ]

    no_book = forms.BooleanField(
        label="Pas de livre pour cette classe/matière", required=False, initial=False
    )
    see_later = forms.BooleanField(
        label="Voir à la rentrée",
        help_text="Notamment en cas de désaccord sur l'adoption ou non d'un manuel",
        required=False,
        initial=False,
    )

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["title"].widget = forms.TextInput()
        self.fields["authors"].widget = forms.TextInput()
        self.fields["comments"].widget.attrs.update(rows=3)
        self.fields["teacher"].widget.attrs.update({"class": "custom-select"})
        self.fields["editor"].widget.attrs.update({"class": "custom-select"})
        self.fields["previously_acquired"].widget.attrs.update(
            {"class": "custom-select"}
        )
        self.fields["consumable"].widget.attrs.update({"class": "custom-select"})
        if "level" in self.fields:
            self.fields["level"].widget.attrs.update({"class": "custom-select"})

    def clean(self):
        editor = self.cleaned_data["editor"]
        other_editor = self.cleaned_data["other_editor"]
        title = self.cleaned_data["title"]

        if (
            editor
            and "autre" in editor.name.lower()
            and not other_editor
            and title not in ["PAS DE LIVRE POUR CETTE CLASSE", "VOIR À LA RENTRÉE"]
        ):
            self.add_error(
                "other_editor",
                ValidationError(
                    "Vous devez préciser l'éditeur si vous n'en choisissez pas un parmi la liste.",
                    code="missing",
                ),
            )

    def clean_previously_acquired(self):
        data = self.cleaned_data["previously_acquired"]
        if data is None or data == "":
            raise ValidationError("Vous devez choisir une valeur")

        return data


class AddBookForm(EditBookForm):
    class Meta(EditBookForm.Meta):
        fields = [
            "teacher",
            "levels",
            "field",
            "no_book",
            "see_later",
            "title",
            "authors",
            "editor",
            "other_editor",
            "publication_year",
            "isbn",
            "price",
            "previously_acquired",
            "comments",
            "add_another",
            "consumable",
        ]

    add_another = forms.BooleanField(
        label="Ajouter un autre livre", required=False, initial=True
    )
    levels = forms.ModelMultipleChoiceField(
        queryset=Level.objects.all(),
        label="Classes",
        required=True,
        help_text="Maintenez la touche Ctrl (ou Cmd) enfoncée pour en sélectionner plusieurs.",
    )


class EditSuppliesForm(forms.ModelForm):
    class Meta:
        model = SuppliesRequirement
        fields = ["teacher", "level", "field", "supplies"]

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.fields["supplies"].widget.attrs.update(rows=3)
        self.fields["teacher"].widget.attrs.update({"class": "custom-select"})
        if "level" in self.fields:
            self.fields["level"].widget.attrs.update({"class": "custom-select"})


class AddSuppliesForm(EditSuppliesForm):
    class Meta(EditSuppliesForm.Meta):
        fields = ["teacher", "levels", "field", "supplies"]

    add_another = forms.BooleanField(
        label="Ajouter d'autres fournitures", required=False, initial=True
    )
    levels = forms.ModelMultipleChoiceField(
        queryset=Level.objects.all(),
        label="Classes",
        required=True,
        help_text="Maintenez la touche Ctrl (ou Cmd) enfoncée pour en sélectionner plusieurs.",
    )