from django.contrib import admin
from django.contrib.auth.admin import UserAdmin
from .models import User

class CustomUserAdmin(UserAdmin):
    list_display = ('username', 'email', 'first_name', 'last_name', 'access_level', 'is_staff', 'is_active')
    list_filter = ('access_level', 'is_staff', 'is_active')
    fieldsets = (
        (None, {'fields': ('username', 'email', 'password')}),
        ('Personal info', {'fields': ('first_name', 'last_name')}),
        ('Permissions', {'fields': ('access_level', 'is_active', 'is_staff', 'is_superuser', 'groups', 'user_permissions')}),
        ('Important dates', {'fields': ('last_login', 'date_joined')}),
    )
    add_fieldsets = (
        (None, {
            'classes': ('wide',),
            'fields': ('username', 'email', 'first_name', 'last_name', 'password1', 'password2', 'access_level', 'is_staff', 'is_active')}
        ),
    )
    search_fields = ('username', 'email', 'first_name', 'last_name')
    ordering = ('username',)

    def save_model(self, request, obj, form, change):
        # Generate username if not provided
        if not obj.username:
            obj.username = f"{obj.first_name.lower()}-{obj.last_name.lower()}"
        super().save_model(request, obj, form, change)


admin.site.register(User, CustomUserAdmin)