File content-types/abstract-siw-content-type.php

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<?php

use SIW\Formatting;
use SIW\Elements\Taxonomy_Filter;

/**
 * Class om een custom content type toe te voegen
 * 
 * - Custom post type
 * - Taxonomieën
 * - Title
 * - Intro en filter voor archiefpagina
 * 
 * @copyright 2019 SIW Internationale Vrijwilligersprojecten
 */
abstract class SIW_Content_Type {

    /**
     * Post type
     *
     * @var string
     */
    protected $post_type;

    /**
     * Slug voor post
     *
     * @var string
     */
    protected $single_slug;

    /**
     * Slug voor archiefpagina
     *
     * @var string
     */
    protected $archive_slug;

    /**
     * Taxonomieën
     *
     * @var array
     */
    protected $taxonomies;

    /**
     * Icoon voor admin-menu
     *
     * @var string
     */
    protected $menu_icon;

    /**
     * Capability type
     *
     * @var string
     */
    protected $capability_type = 'post';
    
    /**
     * Post sorteren op titel
     *
     * @var bool
     */
    protected $sort_by_title = false;

    /**
     * Geeft aan of taxonomy filter getoond moet worden
     *
     * @var bool
     */
    protected $show_taxonomy_filter = false;

    /**
     * Instantie van Taxonomy Filter
     *
     * @var Taxonomy_Filter
     */
    protected $taxonomy_filter;

    /**
     * Constructor
     */
    public function __construct() {
        $this->meta_box_fields = $this->get_meta_box_fields();
        $this->taxonomies = $this->get_taxonomies();
        
        new \SIW_Post_Type(
            $this->post_type,
            $this->get_args(),
            $this->get_labels(),
            $this->get_meta_box_fields(),
            $this->single_slug,
            $this->archive_slug
        );
        
        foreach ( $this->taxonomies as $taxonomy ) {
            new \SIW_Taxonomy( $taxonomy['taxonomy'], $this->post_type, $taxonomy['labels'], $taxonomy['args'], $taxonomy['slug'] );
        }
        
        /* Header voor archiefpagina toevoegen*/
        add_action( 'after_page_header', [ $this, 'add_archive_header' ] );

        /* Titles */
        add_filter( 'single_post_title', [ $this, 'get_seo_title'], 10, 2 );
        add_filter( 'the_seo_framework_the_archive_title', [ $this, 'get_seo_title'], 10, 2 );
        add_filter( 'the_seo_framework_generated_archive_excerpt', [ $this, 'set_seo_description' ], 10, 2 );
        add_filter( 'kadence_title', [ $this, 'get_title'] );

        /* Alle posts tonen op archiefpagina */
        add_action( 'pre_get_posts', [ $this, 'show_all_posts_on_archive'] );

        if ( $this->show_taxonomy_filter ) {
            $this->taxonomy_filter = new Taxonomy_Filter();
        }
    }

    /**
     * Zet args voor post type
     * 
     * @return array
     */
    protected function get_args() {
        $args = [
            'menu_icon'       => $this->menu_icon,
            'capability_type' => $this->capability_type,
        ];
        return $args;
    }

    /**
     * Geeft labels terug
     * 
     * @return array
     */
    abstract protected function get_labels();

    /**
     * Geeft taxonomies terug
     * 
     * @return array
     */
    abstract protected function get_taxonomies();

    /**
     * Geeft meta box fields terug
     * 
     * @return array
     */
    abstract protected function get_meta_box_fields();

    /**
     * Undocumented function
     * 
     * @return array
     */
    abstract protected function get_archive_intro( $archive_type );

    /**
     * Undocumented function
     *
     * @param string $title
     * @return string
     */
    abstract protected function get_single_seo_title( $title );

    /**
     * Undocumented function
     *
     * @param string $title
     * @param string $archive_type
     * @param \WP_Term $term
     * @return string
     */
    abstract protected function get_archive_seo_title( $title, $archive_type, $term );
    
    /**
     * Undocumented function
     *
     * @param string $title
     * @return string
     */
    abstract protected function get_single_title( $title );

    /**
     * Undocumented function
     *
     * @param string $title
     * @param string $archive_type
     * @return string
     */
    abstract protected function get_archive_title( $title, $archive_type );

    /**
     * Past de SEO titel aan
     *
     * @param string $title
     * @param \WP_Term $term
     * @return string
     */
    public function get_seo_title( $title, $term ) {

        $archive_type = $this->get_archive_type();

        if ( is_singular( "siw_{$this->post_type}" ) ) {
            return $this->get_single_seo_title( $title );
        }
        elseif ( false != $archive_type ) {
            return $this->get_archive_seo_title( $title, $archive_type, $term );
        }

        return $title;
    }

    /**
     * Past SEO-beschrijving aan
     *
     * @param string $description
     * @param \WP_Term $term
     */
    public function set_seo_description( $description, $term ) {
        if ( ! is_a( $term, 'WP_Term') ) {
            return $description;
        }
        return $description;
    }

    /**
     * Zet titel
     *
     * @param string $title
     * @return string
     */
    public function get_title( $title ) {

        $archive_type = $this->get_archive_type();

        if ( is_singular( "siw_{$this->post_type}" ) ) {
            return $this->get_single_title( $title );
        }
        elseif ( false != $archive_type ) {
            return $this->get_archive_title( $title, $archive_type );
        }

        return $title;
    }

    /**
     * Voegt archive header toe
     * 
     * @todo escaping
     * @todo markup voor meerdere taxonomiën
     */
    public function add_archive_header() {
        $archive_type = $this->get_archive_type();
        if ( false == $archive_type ) {
            return;
        }

        $archive_intro = $this->get_archive_intro( $archive_type );
        ?>
        <div class="container">
            <div class="row siw-archive-intro">
                <div class="col-md-12">
                    <?php echo Formatting::array_to_text( $archive_intro );?>
                </div>
            </div>
        </div>
        <?php
        if ( $this->show_taxonomy_filter ) {
            foreach ( $this->taxonomies as $taxonomy ) {
                if ( $archive_type != $taxonomy['taxonomy'] ) {
                    echo $this->taxonomy_filter->generate( "siw_{$this->post_type}_{$taxonomy['taxonomy']}" );
                }
            }
        }

    }

    /**
     * Bepaal archive type 
     * 
     * @return string|bool
     */
    protected function get_archive_type() {
        if ( is_post_type_archive( "siw_{$this->post_type}" ) ) {
            return 'post_type';
        }
        foreach ( $this->taxonomies as $taxonomy ) {
            if ( is_tax("siw_{$this->post_type}_{$taxonomy['taxonomy']}") ) {
                return $taxonomy['taxonomy'];
            }
        }
        return false;
    }

    /**
     * Toont alle posts op archiefpagina
     *
     * @param WP_Query $query
     * 
     * @todo archive pagina's van taxonomies?
     */
    public function show_all_posts_on_archive( $query ) {
        if ( ! is_admin() && $query->is_main_query() ) {
            if ( is_post_type_archive( "siw_{$this->post_type}" ) ) {
                $query->set('posts_per_page', -1 );

                if ( $this->sort_by_title ) {
                    $query->set( 'order' , 'asc' );
                    $query->set( 'orderby', 'title');
                }
            }
        }
    }


}

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