<?php

/**
 * Muffin editor
 *
 * Class Wpil_Editor_Muffin
 */
class Wpil_Editor_Muffin
{
    /**
     * Gets the post content for the Muffin builder
     * 
     * @param $post_id
     */
    public static function getContent($post_id){
        // muffin stores it's data in a vast array under a single index
        $muffin = get_post_meta($post_id, 'mfn-page-items', true);
        // get if the wp editor content is being hidden from view
        $hiding_post_content = get_post_meta($post_id, 'mfn-post-hide-content', true);

        $content = '';

        if(!empty($muffin) && is_array($muffin)){
            // todo: delete in future updates
//            if(Wpil_Link::checkIfBase64ed($muffin)){
//                $muffin = maybe_unserialize(base64_decode($muffin));
//            }

            // if the builder isn't set to hide the wp editor's content
            if(empty($hiding_post_content)){
                // get the post content
                $post = get_post($post_id);
                $content .= $post->post_content;
            }

            foreach($muffin as $item){
                if(isset($item['wraps'])){
                    foreach($item['wraps'] as $wrap){
                        if(isset($wrap['items']) && !empty($wrap['items']) && is_array($wrap['items'])){
                            foreach($wrap['items'] as $item){
                                if(isset($item['fields']) && isset($item['fields']['content'])){
                                    $content .= "\n" . $item['fields']['content'];
                                }elseif(isset($item['attr']) && isset($item['attr']['content'])){
                                    $content .= "\n" . $item['attr']['content'];
                                }elseif(isset($item['type']) && 'content' === $item['type']){
                                    // if the current item is a "WP Editor" content item, pull the post content
                                    $content .= "\n" . get_post($post_id)->post_content;
                                }
                            }
                        }
                    }
                }
            }
        }

        return $content;
    }

    /**
     * Add links
     *
     * @param $meta
     * @param $post_id
     */
    public static function addLinks($meta, $post_id, &$content)
    {
        $muffin = get_post_meta($post_id, 'mfn-page-items', true);

        if (!empty($muffin) && is_array($muffin)) {
            // todo: delete in future updates
            // if the content is base64 encoded and serialized
//            $base64ed_content = false;
//            if(Wpil_Link::checkIfBase64ed($muffin)){
//                // decode and unserialize it
//                $muffin = maybe_unserialize(base64_decode($muffin));
//                $base64ed_content = true;
//            }

            $update_content = $muffin;

            $muffin_seo = get_post_meta($post_id, 'mfn-page-items-seo', true);
            foreach ($meta as $link) {
                $force_insert = (isset($link['keyword_data']) && !empty($link['keyword_data']->force_insert)) ? true: false;
                $changed_sentence = Wpil_Post::getSentenceWithAnchor($link);
                $slashed_sentence = addslashes($link['sentence']);

                foreach($muffin as $key1 => $item){
                    if(isset($item['wraps'])){
                        foreach($item['wraps'] as $key2 => $wrap){
                            if(isset($wrap['items'])){
                                foreach($wrap['items'] as $key3 => $item){
                                    if(isset($item['fields']) && isset($item['fields']['content'])){
                                        if (strpos($item['fields']['content'], $link['sentence']) === false) {
                                            Wpil_Post::insertLink($update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content'], $slashed_sentence, $changed_sentence, $force_insert);
                                        }else{
                                            Wpil_Post::insertLink($update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content'], $link['sentence'], $changed_sentence, $force_insert);
                                        }
                                    }elseif(isset($item['attr']) && isset($item['attr']['content'])){
                                        if (strpos($item['attr']['content'], $link['sentence']) === false) {
                                            Wpil_Post::insertLink($update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content'], $slashed_sentence, $changed_sentence, $force_insert);
                                        }else{
                                            Wpil_Post::insertLink($update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content'], $link['sentence'], $changed_sentence, $force_insert);
                                        }
                                    }
                                }
                            }
                        }
                    }
                }

                if (strpos($muffin_seo, $link['sentence']) === false) {
                    Wpil_Post::insertLink($muffin_seo, $slashed_sentence, $changed_sentence, $force_insert);
                }else{
                    Wpil_Post::insertLink($muffin_seo, $link['sentence'], $changed_sentence, $force_insert);
                }
            }

            // if the content was previously base64 encoded
//            if($base64ed_content){
//                // re-serialize and base64 it
//                $update_content = base64_encode(maybe_serialize($update_content));
//            }

            update_post_meta($post_id, 'mfn-page-items', $update_content);
            update_post_meta($post_id, 'mfn-page-items-seo', $muffin_seo);
        }
    }

    /**
     * Delete link
     *
     * @param $post_id
     * @param $url
     * @param $anchor
     */
    public static function deleteLink($post_id, $url, $anchor)
    {
        $anchor_replacement = Wpil_Link::get_unlinked_anchor_replacement($anchor);
        $slashed_anchor_replacement = addslashes($anchor_replacement);
        $muffin = get_post_meta($post_id, 'mfn-page-items', true);

        if (!empty($muffin) && is_array($muffin)) {
            // todo: delete in future updates
            // if the content is base64 encoded and serialized
//            $base64ed_content = false;
//            if(Wpil_Link::checkIfBase64ed($muffin)){
//                // decode and unserialize it
//                $muffin = maybe_unserialize(base64_decode($muffin));
//                $base64ed_content = true;
//            }

            $update_content = $muffin;

            $muffin_seo = get_post_meta($post_id, 'mfn-page-items-seo', true);

            $slashed_url = addslashes($url);
            $slashed_anchor = addslashes($anchor);

            foreach($muffin as $key1 => $item){
                if(isset($item['wraps'])){
                    foreach($item['wraps'] as $key2 => $wrap){
                        if(isset($wrap['items'])){
                            foreach($wrap['items'] as $key3 => $item){
                                if(isset($item['fields']) && isset($item['fields']['content'])){
                                    preg_match('|<a .+'.$url.'.+>'.$anchor.'</a>|i', $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content'],  $matches);
                                    if (empty($matches[0])) {
                                        $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content'] = preg_replace('|<a [^>]+'.$slashed_url.'[^>]+>'.$slashed_anchor.'</a>|i', $slashed_anchor_replacement,  $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content']);
                                    }else{
                                        $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content'] = preg_replace('|<a [^>]+'.$url.'[^>]+>'.$anchor.'</a>|i', $anchor_replacement,  $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content']);
                                    }
                                }elseif(isset($item['attr']) && isset($item['attr']['content'])){
                                    preg_match('|<a .+'.$url.'.+>'.$anchor.'</a>|i', $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content'],  $matches);
                                    if (empty($matches[0])) {
                                        $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content'] = preg_replace('|<a [^>]+'.$slashed_url.'[^>]+>'.$slashed_anchor.'</a>|i', $slashed_anchor_replacement,  $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content']);
                                    }else{
                                        $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content'] = preg_replace('|<a [^>]+'.$url.'[^>]+>'.$anchor.'</a>|i', $anchor_replacement,  $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content']);
                                    }
                                }
                            }
                        }
                    }
                }
            }

            preg_match('|<a .+'.$url.'.+>'.$anchor.'</a>|i', $muffin_seo,  $matches);
            if(empty($matches[0])) {
                $muffin_seo = preg_replace('|<a [^>]+'.$slashed_url.'[^>]+>'.$slashed_anchor.'</a>|i', $slashed_anchor_replacement,  $muffin_seo);
            }else{
                $muffin_seo = preg_replace('|<a [^>]+'.$url.'[^>]+>'.$anchor.'</a>|i', $anchor_replacement,  $muffin_seo);
            }

            // if the content was previously base64 encoded
//            if($base64ed_content){
//                // re-serialize and base64 it
//                $update_content = base64_encode(maybe_serialize($update_content));
//            }

            update_post_meta($post_id, 'mfn-page-items', $update_content);
            update_post_meta($post_id, 'mfn-page-items-seo', $muffin_seo);
        }
    }

    /**
     * Remove keyword links
     *
     * @param $keyword
     * @param $post_id
     * @param bool $left_one
     */
    public static function removeKeywordLinks($keyword, $post_id, $left_one = false)
    {
        $muffin = get_post_meta($post_id, 'mfn-page-items', true);

        if (!empty($muffin) && is_array($muffin)) {
            $changed = false;

            // todo: delete in future updates
            // if the content is base64 encoded and serialized
//            $base64ed_content = false;
//            if(Wpil_Link::checkIfBase64ed($muffin)){
//                // decode and unserialize it
//                $muffin = maybe_unserialize(base64_decode($muffin));
//                $base64ed_content = true;
//            }

            $update_content = $muffin;

            $muffin_seo = get_post_meta($post_id, 'mfn-page-items-seo', true);

            $slashed_keyword = $keyword;
            $slashed_keyword->link = addslashes($keyword->link);
            $slashed_keyword->keyword = addslashes($keyword->keyword);

            foreach($muffin as $key1 => $item){
                if(isset($item['wraps'])){
                    foreach($item['wraps'] as $key2 => $wrap){
                        if(isset($wrap['items'])){
                            foreach($wrap['items'] as $key3 => $item){
                                if(isset($item['fields']) && isset($item['fields']['content'])){
                                    $matches = Wpil_Keyword::findKeywordLinks($keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content']);
                                    if(empty($matches[0])){
                                        if($left_one && !$changed){
                                            $matches2 = Wpil_Keyword::findKeywordLinks($slashed_keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content']);
                                            if(!empty($matches2[0])){
                                                Wpil_Keyword::removeNonFirstLinks($slashed_keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content']);
                                                $changed = true;
                                            }
                                        }else{
                                            Wpil_Keyword::removeAllLinks($slashed_keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content']);
                                        }
                                    }else{
                                        if($left_one && !$changed){
                                            Wpil_Keyword::removeNonFirstLinks($keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content']);
                                            $changed = true;
                                        }else{
                                            Wpil_Keyword::removeAllLinks($keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content']);
                                        }
                                    }
                                }elseif(isset($item['attr']) && isset($item['attr']['content'])){
                                    $matches = Wpil_Keyword::findKeywordLinks($keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content']);
                                    if(empty($matches[0])){
                                        if($left_one && !$changed){
                                            $matches2 = Wpil_Keyword::findKeywordLinks($slashed_keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content']);
                                            if(!empty($matches2[0])){
                                                Wpil_Keyword::removeNonFirstLinks($slashed_keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content']);
                                                $changed = true;
                                            }
                                        }else{
                                            Wpil_Keyword::removeAllLinks($slashed_keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content']);
                                        }
                                    }else{
                                        if($left_one && !$changed){
                                            Wpil_Keyword::removeNonFirstLinks($keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content']);
                                            $changed = true;
                                        }else{
                                            Wpil_Keyword::removeAllLinks($keyword, $update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content']);
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }

            $matches = Wpil_Keyword::findKeywordLinks($keyword, $muffin_seo);

            if ($left_one) {
                if(empty($matches[0])) {
                    Wpil_Keyword::removeNonFirstLinks($slashed_keyword, $muffin_seo);
                }else{
                    Wpil_Keyword::removeNonFirstLinks($keyword, $muffin_seo);
                }
            } else {
                if(empty($matches[0])) {
                    Wpil_Keyword::removeAllLinks($slashed_keyword, $muffin_seo);
                }else{
                    Wpil_Keyword::removeAllLinks($keyword, $muffin_seo);
                }
            }

            // if the content was previously base64 encoded
//            if($base64ed_content){
//                // re-serialize and base64 it
//                $update_content = base64_encode(maybe_serialize($update_content));
//            }

            update_post_meta($post_id, 'mfn-page-items', $update_content);
            update_post_meta($post_id, 'mfn-page-items-seo', $muffin_seo);
        }
    }

    /**
     * Replace URLs
     *
     * @param $post
     * @param $url
     */
    public static function replaceURLs($post, $url)
    {
        $muffin = get_post_meta($post->id, 'mfn-page-items', true);

        if (!empty($muffin) && is_array($muffin)) {
            // todo: delete in future updates
            // if the content is base64 encoded and serialized
//            $base64ed_content = false;
//            if(Wpil_Link::checkIfBase64ed($muffin)){
//                // decode and unserialize it
//                $muffin = maybe_unserialize(base64_decode($muffin));
//                $base64ed_content = true;
//            }

            $update_content = $muffin;

            $muffin_seo = get_post_meta($post->id, 'mfn-page-items-seo', true);

            foreach($muffin as $key1 => $item){
                if(isset($item['wraps'])){
                    foreach($item['wraps'] as $key2 => $wrap){
                        if(isset($wrap['items'])){
                            foreach($wrap['items'] as $key3 => $item){
                                if(isset($item['fields']) && isset($item['fields']['content'])){
                                    Wpil_URLChanger::replaceLink($update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content'], $url, true, $post);
                                }
                                
                                if(isset($item['attr']) && isset($item['attr']['content'])){
                                    Wpil_URLChanger::replaceLink($update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content'], $url, true, $post);
                                }
                            }
                        }
                    }
                }
            }

            Wpil_URLChanger::replaceLink($muffin_seo, $url, true, $post);

            // if the content was previously base64 encoded
//            if($base64ed_content){
//                // re-serialize and base64 it
//                $update_content = base64_encode(maybe_serialize($update_content));
//            }

            update_post_meta($post->id, 'mfn-page-items', $update_content);
            update_post_meta($post->id, 'mfn-page-items-seo', $muffin_seo);
        }

    }

    /**
     * Revert URLs
     *
     * @param $post
     * @param $url
     */
    public static function revertURLs($post, $url)
    {
        $muffin = get_post_meta($post->id, 'mfn-page-items', true);

        if (!empty($muffin) && is_array($muffin)) {
            // todo: delete in future updates
            // if the content is base64 encoded and serialized
//            $base64ed_content = false;
//            if(Wpil_Link::checkIfBase64ed($muffin)){
//                // decode and unserialize it
//                $muffin = maybe_unserialize(base64_decode($muffin));
//                $base64ed_content = true;
//            }

            $update_content = $muffin;

            $muffin_seo = get_post_meta($post->id, 'mfn-page-items-seo', true);

            foreach($muffin as $key1 => $item){
                if(isset($item['wraps'])){
                    foreach($item['wraps'] as $key2 => $wrap){
                        if(isset($wrap['items'])){
                            foreach($wrap['items'] as $key3 => $item){
                                if(isset($item['fields']) && isset($item['fields']['content'])){
                                    Wpil_URLChanger::revertURL($update_content[$key1]['wraps'][$key2]['items'][$key3]['fields']['content'], $url);
                                }

                                if(isset($item['attr']) && isset($item['attr']['content'])){
                                    Wpil_URLChanger::revertURL($update_content[$key1]['wraps'][$key2]['items'][$key3]['attr']['content'], $url);
                                }
                            }
                        }
                    }
                }
            }

            Wpil_URLChanger::revertURL($muffin_seo, $url);

            // if the content was previously base64 encoded
//            if($base64ed_content){
//                // re-serialize and base64 it
//                $update_content = base64_encode(maybe_serialize($update_content));
//            }

            update_post_meta($post->id, 'mfn-page-items', $update_content);
            update_post_meta($post->id, 'mfn-page-items-seo', $muffin_seo);
        }
    }

    /**
     * Updates the urls of existing links on a link-by-link basis.
     * For use with the Ajax URL updating functionality
     *
     * @param Wpil_Model_Post $post
     * @param $old_link
     * @param $new_link
     * @param $anchor
     */
    public static function updateExistingLink($post, $old_link, $new_link, $anchor, $new_anchor = '', $sentence = '', $new_sentence = '')
    {
        // exit if this is a term or there's no post data
        if(empty($post) || $post->type !== 'post'){
            return;
        }

        $muffin = get_post_meta($post->id, 'mfn-page-items', true);

        if (!empty($muffin) && is_array($muffin)) {
            // todo: delete in future updates
            // if the content is base64 encoded and serialized
//            $base64ed_content = false;
//            if(Wpil_Link::checkIfBase64ed($muffin)){
//                // decode and unserialize it
//                $muffin = maybe_unserialize(base64_decode($muffin));
//                $base64ed_content = true;
//            }

            $update_content = $muffin;

            $muffin_seo = get_post_meta($post->id, 'mfn-page-items-seo', true);

            foreach($muffin as $key1 => $item){
                if(isset($item['wraps'])){
                    foreach($item['wraps'] as $key2 => $wrap){
                        if(isset($wrap['items'])){
                            foreach($wrap['items'] as $key3 => $item){
                                if(isset($item['fields']) && isset($item['fields']['content'])){
                                    Wpil_Link::updateLinkUrl($item['fields']['content'], $old_link, $new_link, $anchor, $new_anchor, $sentence, $new_sentence);
                                }

                                if(isset($item['attr']) && isset($item['attr']['content'])){
                                    Wpil_Link::updateLinkUrl($item['attr']['content'], $old_link, $new_link, $anchor, $new_anchor, $sentence, $new_sentence);
                                }
                            }
                        }
                    }
                }
            }

            Wpil_Link::updateLinkUrl($muffin_seo, $old_link, $new_link, $anchor, $new_anchor, $sentence, $new_sentence);

            // if the content was previously base64 encoded
//            if($base64ed_content){
//                // re-serialize and base64 it
//                $update_content = base64_encode(maybe_serialize($update_content));
//            }

            update_post_meta($post->id, 'mfn-page-items', $update_content);
            update_post_meta($post->id, 'mfn-page-items-seo', $muffin_seo);
        }
    }
}