import nested_admin

from django import forms
from django.http import HttpRequest

from durationwidget.widgets import TimeDurationWidget 

from ..models.hourbuildings import HourBuilding, HourBuildingLeg
from ..models.weekpref import WeekPreference

from datetime import date

class HourBuildingLegForm(forms.ModelForm):
    class Meta:
        model = HourBuildingLeg
        fields = '__all__'
        widgets = {
            'time': TimeDurationWidget(show_days=False, 
                                       show_seconds=False
            )
        }

# Register your models here.
class HourBuildingLegInline(nested_admin.NestedTabularInline):
    model = HourBuildingLeg
    form = HourBuildingLegForm
    extra = 0
    fk_name = 'hb'
    max_num = 5

    # If user is a student deny edit permission for week past the current one
    def has_change_permission(self, request: HttpRequest, obj: HourBuilding | None = None):
        if hasattr(request.user, 'student') and obj:
            current_week = date.today().isocalendar().week
            if not obj.DoesNotExist and current_week > obj.weekpref.week:
                return False
        return True
    
    def has_delete_permission(self, request: HttpRequest, obj: HourBuilding | None = None):
        return self.has_change_permission(request=request, obj=obj)

class HourBuildingInLine(nested_admin.NestedTabularInline):
    model = HourBuilding
    extra = 0
    inlines = [HourBuildingLegInline]
    fk_name = 'weekpref'
    verbose_name_plural = "Hour Building"
    max_num = 7

    # If user is a student deny edit permission for week past the current one
    def has_change_permission(self, request: HttpRequest, obj: WeekPreference | None = None):
        if hasattr(request.user, 'student') and obj:
            current_week = date.today().isocalendar().week
            if current_week > obj.week:
                return False
        return True
    
    def has_delete_permission(self, request: HttpRequest, obj: WeekPreference | None = None):
        return self.has_change_permission(request=request, obj=obj)