<?php

/*
 * This file is part of the DunglasApiBundle package.
 *
 * (c) Kévin Dunglas <dunglas@gmail.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Bender\ApiBundle\DependencyInjection\Compiler;

use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Definition;
use Symfony\Component\DependencyInjection\Reference;

/**
 * Add resources to the resource collection and populate operations if necessary.
 *
 * @author Kévin Dunglas <dunglas@gmail.com>
 */
class FormHandlerPass implements CompilerPassInterface
{
    /**
     * {@inheritdoc}
     */
    public function process(ContainerBuilder $container)
    {
         $resourceCollectionDefinition = $container->getDefinition('api.resource_collection');
         $resourceReferences = [];

        foreach ($container->findTaggedServiceIds('api.resource') as $serviceId => $tags) {
            $resourceReferences[] = new Reference($serviceId);
            $resourceDefinition = $container->getDefinition($serviceId);

            if ($this->hasForm($resourceDefinition->getMethodCalls()) === true) {

                $resourceDefinition->addMethodCall('initItemOperations', [[
                    $this->createOperation($container, $serviceId, 'GET', false),
                    $this->createOperation($container, $serviceId, 'GET', true),
                ]]);
            }
        }

        $resourceCollectionDefinition->addMethodCall('init', [$resourceReferences]);
    }

    /**
     * hasForm - test if resource has a setForm method call
     *
     * @param array $methodCalls
     * @return bool
     */
    private function hasForm($methodCalls) {

        foreach($methodCalls as $method) {
            if ($method[0] == 'setForm') {
                return true;
            }
        }

        return false;
    }

    private function createOperation(ContainerBuilder $container, $serviceId, $method, $collection)
    {

        $factoryMethodName = 'createFormItemOperation';
        $operationId = "$serviceId.item_operation.form";

        if ($collection === true) {
            $factoryMethodName = 'createFormCollectionOperation';
            $operationId = "$serviceId.item_operation.cform";
        }

        $operation = new Definition(
            'Dunglas\ApiBundle\Api\Operation\Operation',
            [new Reference($serviceId), $method]
        );

        $operation->setFactory([new Reference('bender_api.form_operation_factory'), $factoryMethodName]);
        $operation->setLazy(true);

        $container->setDefinition($operationId, $operation);
        //$definition->addMethodCall('createItemOperation', [new Reference($operationId)]);

        return new Reference($operationId);

    }
}