from django.contrib import admin
from .models import Reservation, Venue, Workshop

@admin.register(Venue)
class VenueAdmin(admin.ModelAdmin):
    list_display = ["name", "code", "access_note"]
    search_fields = ["name", "code"]

@admin.register(Workshop)
class WorkshopAdmin(admin.ModelAdmin):
    list_display = ["title", "venue", "remaining", "capacity", "published"]
    list_filter = ["published", "venue"]
    search_fields = ["title", "slug"]
    prepopulated_fields = {"slug": ["title"]}
    list_select_related = ["venue"]
    actions = ["publish_selected"]
    def get_readonly_fields(self, request, obj=None):
        return ["remaining", "capacity"] if obj else []
    @admin.action(description="Publish selected workshops")
    def publish_selected(self, request, queryset):
        queryset.update(published=True)

@admin.register(Reservation)
class ReservationAdmin(admin.ModelAdmin):
    list_display = ["workshop", "user", "seats", "created_at"]
    list_select_related = ["workshop", "user"]
    readonly_fields = ["workshop", "user", "seats", "created_at"]
    def has_add_permission(self, request):
        return False
    def has_delete_permission(self, request, obj=None):
        return False