<?php

declare(strict_types=1);

/*
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

namespace Chill\CustomFieldsBundle\Templating\Twig;

use Chill\CustomFieldsBundle\Entity\CustomField;
use Chill\CustomFieldsBundle\Service\CustomFieldsHelper;
use Twig\Environment;
use Twig\Extension\AbstractExtension;
use Twig\TwigFunction;

/**
 * Add the following Twig Extension :
 * * chill_custom_field_widget : to render the value of the custom field,
 * * chill_custom_field_label : to render the label of the custom field,.
 */
class CustomFieldRenderingTwig extends AbstractExtension
{
    /**
     * @var array The default parameters
     */
    private array $defaultParams = [
        'label_layout' => '@ChillCustomFields/CustomField/render_label.html.twig',
    ];

    public function __construct(private readonly CustomFieldsHelper $customFieldsHelper) {}

    /**
     * (non-PHPdoc).
     *
     * @see Twig_Extension::getFunctions()
     */
    public function getFunctions()
    {
        return [
            new TwigFunction('chill_custom_field_widget', $this->renderWidget(...), [
                'is_safe' => [
                    'html',
                ],
            ]),
            new TwigFunction('chill_custom_field_label', $this->renderLabel(...), [
                'is_safe' => [
                    'html',
                ],
                'needs_environment' => true,
            ]),
            new TwigFunction('chill_custom_field_is_empty', $this->isEmptyValue(...)),
        ];
    }

    /** (non-PHPdoc).
     * @see Twig_ExtensionInterface::getName()
     */
    public function getName()
    {
        return 'chill_custom_fields_rendering';
    }

    public function isEmptyValue($fields, CustomField $customField)
    {
        return $this->customFieldsHelper
            ->isEmptyValue($fields, $customField);
    }

    /**
     * Twig Extension that is used to render the label of a custom field.
     *
     * @param CustomField $customField Either a customField OR a customizable_entity OR the FQDN of the entity
     * @param array       $params      The parameters for rendering. Currently, 'label_layout' allow to choose a different label. Default is '@ChillCustomFields/CustomField/render_label.html.twig'
     *
     * @return string HTML representation of the custom field label
     */
    public function renderLabel(Environment $env, CustomField $customField, array $params = [])
    {
        $resolvedParams = array_merge($this->defaultParams, $params);

        return $env->render($resolvedParams['label_layout'], ['customField' => $customField]);
    }

    /**
     * Twig extension that is used to render the value of a custom field.
     *
     * The presentation of the value  is influenced by the document type.
     *
     * @param array       $fields       The array raw, as stored in the db
     * @param CustomField $customField  Either a customField OR a customizable_entity OR the FQDN of the entity
     * @param string      $documentType The type of the document (csv, html)
     *
     * @return string HTML representation of the custom field value, as described in the CustomFieldInterface. Is HTML safe
     */
    public function renderWidget(array $fields, CustomField $customField, $documentType = 'html')
    {
        return $this->customFieldsHelper
            ->renderCustomField($fields, $customField, $documentType);
    }
}