from django import forms
from django.core.exceptions import ValidationError
from django.utils.translation import gettext_lazy as _


class MessageForm(forms.Form):
    message = forms.CharField(max_length=80, help_text=_("Up to 80 characters."))


class LanguageForm(forms.Form):
    language = forms.ChoiceField(choices=(("", _("Choose a language")), ("python", "Python"), ("django", "Django"), ("htmx", "HTMX")))


class FilterForm(forms.Form):
    q = forms.CharField(label=_("Filter examples"), max_length=40, required=False)
    status = forms.ChoiceField(required=False, choices=(("", _("All statuses")), ("ready", _("Ready")), ("draft", _("Draft"))))


class UploadForm(forms.Form):
    file = forms.FileField()

    def clean_file(self):
        uploaded = self.cleaned_data["file"]
        if uploaded.size > 256 * 1024:
            raise ValidationError(_("Choose a file smaller than 256 KB."))
        if uploaded.content_type not in {"text/plain", "application/pdf"}:
            raise ValidationError(_("Choose a plain text file or PDF."))
        return uploaded