WP-Multi-Wiki/includes/class-wmw-frontend.php

<?php
if ( ! defined( 'ABSPATH' ) ) exit;

class WMW_Frontend {

    public function init() {
        add_action( 'wp_enqueue_scripts', array( $this, 'enqueue' ) );
        add_filter( 'the_content',        array( $this, 'filter_content' ) );
        add_filter( 'the_title',          array( $this, 'filter_title' ), 10, 2 );
        add_action( 'wp_head',            array( $this, 'inject_css_vars' ) );
        add_filter( 'template_include',   array( $this, 'load_template' ) );
    }

    public function enqueue() {
        $settings = get_option( 'wmw_settings', array() );

        wp_enqueue_style(
            'wmw-public',
            WMW_PLUGIN_URL . 'public/css/wmw-public.css',
            array(),
            WMW_VERSION
        );

        // Custom CSS from settings
        if ( ! empty( $settings['custom_css'] ) ) {
            wp_add_inline_style( 'wmw-public', $settings['custom_css'] );
        }

        wp_enqueue_script(
            'wmw-public',
            WMW_PLUGIN_URL . 'public/js/wmw-public.js',
            array( 'jquery' ),
            WMW_VERSION,
            true
        );

        wp_localize_script( 'wmw-public', 'wmwPublic', array(
            'ajaxUrl'  => admin_url( 'admin-ajax.php' ),
            'nonce'    => wp_create_nonce( 'wmw_public_nonce' ),
            'settings' => array(
                'show_toc' => $settings['show_toc'] ?? 1,
            ),
        ) );
    }

    public function inject_css_vars() {
        global $post;
        if ( ! $post ) return;

        $wiki = null;
        if ( $post->post_type === 'wmw_wiki' ) {
            $wiki = $post;
        } elseif ( $post->post_type === 'wmw_article' ) {
            $wiki = wmw_get_article_wiki( $post->ID );
        }

        if ( $wiki ) {
            $color = wmw_get_wiki_color( $wiki->ID );
            echo "<style>:root { --wmw-accent: {$color}; --wmw-accent-light: {$color}22; }</style>\n";
        }
    }

    public function filter_content( $content ) {
        global $post;
        if ( ! $post || ! is_singular() ) return $content;

        $settings = get_option( 'wmw_settings', array() );

        if ( $post->post_type === 'wmw_article' && ( $settings['show_toc'] ?? 1 ) ) {
            $processed = WMW_TOC::process( $content );
            if ( ! empty( $processed['toc'] ) ) {
                $content = $processed['toc'] . $processed['content'];
            }
        }

        return $content;
    }

    public function filter_title( $title, $id = null ) {
        return $title;
    }

    public function load_template( $template ) {
        global $post;
        if ( ! $post ) return $template;

        if ( $post->post_type === 'wmw_wiki' ) {
            $custom = WMW_PLUGIN_DIR . 'templates/single-wmw-wiki.php';
            if ( file_exists( $custom ) ) return $custom;
        }
        if ( $post->post_type === 'wmw_article' ) {
            $custom = WMW_PLUGIN_DIR . 'templates/single-wmw-article.php';
            if ( file_exists( $custom ) ) return $custom;
        }

        return $template;
    }

    // ── Static Render Methods ─────────────────────────────────────────────────

    public static function render_wiki_index( $wiki, $layout = 'grid' ) {
        $settings   = get_option( 'wmw_settings', array() );
        $articles   = wmw_get_articles( $wiki->ID );
        $categories = get_terms( array( 'taxonomy' => 'wmw_category', 'hide_empty' => true ) );
        $color      = wmw_get_wiki_color( $wiki->ID );
        $icon       = wmw_get_wiki_icon( $wiki->ID );

        // Group by category
        $grouped = array( 'uncategorized' => array() );
        $cat_map = array();
        foreach ( (array) $categories as $cat ) {
            $grouped[ $cat->term_id ] = array();
            $cat_map[ $cat->term_id ] = $cat;
        }

        foreach ( $articles as $article ) {
            $cats = get_the_terms( $article->ID, 'wmw_category' );
            if ( $cats && ! is_wp_error( $cats ) ) {
                foreach ( $cats as $cat ) {
                    $grouped[ $cat->term_id ][] = $article;
                }
            } else {
                $grouped['uncategorized'][] = $article;
            }
        }

        include WMW_PLUGIN_DIR . 'templates/wiki-index.php';
    }

    public static function render_article( $article ) {
        $wiki     = wmw_get_article_wiki( $article->ID );
        $settings = get_option( 'wmw_settings', array() );
        $content  = apply_filters( 'the_content', $article->post_content );

        // Related articles
        $related = array();
        if ( $settings['show_related'] ?? 1 ) {
            $cats = get_the_terms( $article->ID, 'wmw_category' );
            if ( $cats && ! is_wp_error( $cats ) ) {
                $cat_ids = wp_list_pluck( $cats, 'term_id' );
                $related = get_posts( array(
                    'post_type'      => 'wmw_article',
                    'post_status'    => 'publish',
                    'posts_per_page' => 5,
                    'post__not_in'   => array( $article->ID ),
                    'tax_query'      => array( array( 'taxonomy' => 'wmw_category', 'field' => 'term_id', 'terms' => $cat_ids ) ),
                ) );
            }
        }

        include WMW_PLUGIN_DIR . 'templates/article-single.php';
    }

    public static function render_search_box( $wiki_id = 0, $placeholder = '' ) {
        $placeholder = $placeholder ?: 'Wiki durchsuchen…';
        include WMW_PLUGIN_DIR . 'templates/search-box.php';
    }

    public static function render_wiki_list( $wikis, $columns = 3 ) {
        include WMW_PLUGIN_DIR . 'templates/wiki-list.php';
    }

    public static function render_breadcrumb( $post ) {
        $items = array();
        $items[] = array( 'label' => 'Home', 'url' => home_url() );

        if ( $post->post_type === 'wmw_article' ) {
            $wiki = wmw_get_article_wiki( $post->ID );
            if ( $wiki ) {
                $items[] = array( 'label' => 'Wiki', 'url' => get_post_type_archive_link( 'wmw_wiki' ) );
                $items[] = array( 'label' => $wiki->post_title, 'url' => get_permalink( $wiki->ID ) );
            }
            $items[] = array( 'label' => $post->post_title, 'url' => '' );
        } elseif ( $post->post_type === 'wmw_wiki' ) {
            $items[] = array( 'label' => 'Wiki', 'url' => get_post_type_archive_link( 'wmw_wiki' ) );
            $items[] = array( 'label' => $post->post_title, 'url' => '' );
        }

        include WMW_PLUGIN_DIR . 'templates/breadcrumb.php';
    }

    public static function get_wiki_sidebar( $wiki ) {
        $articles = wmw_get_articles( $wiki->ID );
        $categories = get_terms( array( 'taxonomy' => 'wmw_category', 'hide_empty' => false ) );
        ob_start();
        include WMW_PLUGIN_DIR . 'templates/sidebar.php';
        return ob_get_clean();
    }
}