<?php

use BrizyPlaceholders\ContentPlaceholder;
use BrizyPlaceholders\ContextInterface;

class BrizyPro_Content_Placeholders_PostLoop extends BrizyPro_Content_Placeholders_AbstractPostLoop
{
    /**
     * BrizyPro_Content_Placeholders_PostLoop constructor.
     *
     * @param string $label
     * @param string $placeholder
     *
     * @throws Exception
     */
    public function __construct($label, $placeholder)
    {
        $this->setLabel($label);
        $this->setPlaceholder($placeholder);
        $this->setDisplay(self::DISPLAY_BLOCK);
        $this->setGroup(null);
    }

    private function getDynamicContentConfig(Brizy_Content_Context $context)
    {
        $provider = Brizy_Content_PlaceholderProvider::getInstance($context);
        return ['groups' => $provider->getGroupedPlaceholdersForApiResponse()];
    }

    /**
     * @param ContextInterface $context
     * @param ContentPlaceholder $contentPlaceholder
     * @return false|mixed|string
     */
    public function getValue(ContextInterface $context, ContentPlaceholder $contentPlaceholder)
    {
        global $post;

        $attributes = $contentPlaceholder->getAttributes();
        $attributes = array_map(function ($value) {
            return html_entity_decode($value, ENT_QUOTES);
        }, $attributes);

        $posts = $this->getPosts($attributes);
        $content = '';

        // that is bad.. but there is no easy way to return ids instead of content
        if (isset($attributes['content_type']) && $attributes['content_type'] === 'json') {
            return json_encode([
                'collection' => $posts,
                'config' => ['*' => ['dynamicContent' => $this->getDynamicContentConfig($context)]]
            ]);
        }

        //$placeholderProvider = new Brizy_Content_PlaceholderProvider( $context );
        //$extractor           = new \BrizyPlaceholders\Extractor( $context->getProvider() );
        //list( $contentPlaceholders, $placeholderInstances, $newContent ) = $extractor->extract( $content );
        $replacer = new \BrizyPlaceholders\Replacer($context->getProvider());

        foreach ((array)$posts as $postId) {

            // this method will initialize the WP_Post instance avoiding the adding it to cache
            // this way we avoid huge memory usage..
            $_post = $this->getWpPostInstance($postId);

            if (!$_post) {
                continue;
            }

            $post = $_post;

            unset($_post);

            setup_postdata($post);


            $newContext = Brizy_Content_ContextFactory::createContext($context->getProject(), $post, true, $context, $contentPlaceholder);
            $newContext->setProvider($context->getProvider());
            Brizy_Content_ContextFactory::makeContextGlobal($newContext);

            $content .= do_shortcode($replacer->replacePlaceholders($contentPlaceholder->getContent(), $newContext));

            Brizy_Content_ContextFactory::clearGlobalContext();

            wp_reset_postdata();
        }

        return $content;
    }

    /**
     * @return mixed|string
     */
    protected function getOptionValue()
    {
        return $this->getReplacePlaceholder();
    }

}

