<?php

namespace App\Providers;

use Filament\Tables\Table;
use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     */
    public function register(): void
    {
        //
    }

    /**
     * Bootstrap any application services.
     */
    public function boot(): void
    {
        # Makro, um die Zeilen zu filtern.
        # geklaut hier: https://filamentglow.com/trick/implementing-row-level-security-in-filament-tables-with-applyrowaccesspolicy-30090998
        Table::macro('applyRowAccessPolicy', function (\Closure | bool $condition = true): Table {
            if ($condition instanceof \Closure) {
                $condition = $this->evaluate($condition);
            }

            /**
             * Store the view row scope condition in Laravel's service container.
             *
             * How this works:
             * 1. We generate a unique ID for each Table instance using spl_object_hash()
             * 2. We create a container binding with a key specific to this Table instance
             * 3. The condition value (true/false) is stored in the container
             *
             * The container binding will be automatically cleaned up when the Table instance
             * is garbage collected, as the binding key is unique to this instance.
             */
            $tableId = spl_object_hash($this);
            app()->instance('filament.table.viewRowScope.' . $tableId, $condition);

            return $this->modifyQueryUsing(function (\Illuminate\Database\Eloquent\Builder $query) use ($tableId): \Illuminate\Database\Eloquent\Builder {
                // Check the container for this Table's specific viewRowScope setting
                // Defaults to true if no binding exists (fallback for safety)
                $shouldApply = app()->bound('filament.table.viewRowScope.' . $tableId)
                    ? app()->make('filament.table.viewRowScope.' . $tableId)
                    : true;

                if (! $shouldApply) {
                    return $query;
                }

                $model = $query->getModel();

                if (! $model) {
                    return $query;
                }

                $policy = \Gate::getPolicyFor($model);

                if (! $policy || ! method_exists($policy, 'applyRowAccessPolicy')) {
                    return $query;
                }

                $modifiedQuery = $policy->applyRowAccessPolicy(auth()->user(), $query);

                if (! $modifiedQuery instanceof \Illuminate\Database\Eloquent\Builder) {
                    throw new \RuntimeException("The applyRowAccessPolicy method for " . $policy::class . " must return an instance of Illuminate\Database\Eloquent\Builder.");
                }

                return $modifiedQuery;
            });
        });
    }
}