"""Forms for the appreciation module."""
from django import forms
from django.utils.translation import gettext_lazy as _

from apps.appreciation.models import Appreciation
from apps.organizations.models import Department


class AppreciationForm(forms.ModelForm):
    """Internal form for creating an appreciation (department-targeted)."""

    national_id = forms.CharField(
        label=_("National ID/Iqama No."),
        max_length=10,
        required=True,
        widget=forms.TextInput(attrs={
            "class": "w-full px-4 py-3 border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-navy/20 outline-none",
            "placeholder": _("National ID or Iqama number"),
            "inputmode": "numeric",
            "pattern": "[0-9]{10}",
            "maxlength": "10",
            "minlength": "10",
        }),
        help_text=_("Exactly 10 digits, numbers only."),
    )

    class Meta:
        model = Appreciation
        fields = ["department", "message_en", "national_id"]
        widgets = {
            "message_en": forms.Textarea(
                attrs={
                    "rows": 5,
                    "class": "w-full px-4 py-3 border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-navy/20 outline-none",
                    "placeholder": "Write your message of appreciation...",
                }
            ),
            "department": forms.Select(
                attrs={"class": "w-full px-4 py-3 border border-slate-200 rounded-xl text-sm focus:ring-2 focus:ring-navy/20 outline-none"}
            ),
        }

    def clean_national_id(self):
        national_id = self.cleaned_data.get("national_id", "").replace(" ", "")
        if not national_id.isdigit():
            raise forms.ValidationError(_("National ID/Iqama must contain digits only."))
        if len(national_id) != 10:
            raise forms.ValidationError(_("National ID/Iqama must be exactly 10 digits (you entered %(n)d).") % {"n": len(national_id)})
        return national_id

    def __init__(self, *args, hospital=None, **kwargs):
        super().__init__(*args, **kwargs)
        if hospital:
            dept_qs = Department.objects.filter(hospital=hospital, status="active").order_by("name")
        else:
            dept_qs = Department.objects.filter(status="active").select_related("hospital").order_by("name")
            self.fields["department"].label_from_instance = lambda obj: (
                f"{obj.name} — {obj.hospital.name}" if obj.hospital else obj.name
            )
        self.fields["department"].queryset = dept_qs