plugin - functions.php

<?php
    /*
        Plugin Name: Jakub Kuron Core
        Description: This plugin contains PHP and Javascript custom functions needed by this page to run propertly.
        Author: RISE
        Author URI: riseproject.pl
        Version: 1.0
    */



    // Register custom menus
    function register_custom_nav_menus() {
        register_nav_menus( array(
            'top-header-menu-left' => __( 'Top Header Menu (Left)', 'twentynineteen' ),
            'top-header-menu-right' => __( 'Top Header Menu (Right)', 'twentynineteen' )
        ) );
    }

    add_action( 'after_setup_theme', 'register_custom_nav_menus' );



    // Remove theme menus (with priority of 20 because it have to be executed later than theme register menus (default is 10))
    function remove_theme_nav_menus() {
        unregister_nav_menu( 'menu-1' );
        unregister_nav_menu( 'footer' );
        unregister_nav_menu( 'social' );
    }

    add_action( 'after_setup_theme', 'remove_theme_nav_menus', 20 );



    // Register custom footer widgets which will be the footer columns areas
    function register_custom_footer_widget() {
        register_sidebars( 3, array(
            'name' => __( 'Footer Column %d', 'twentynineteen' ),
            'before_widget' => '',
            'after_widget'  => '',
            'before_title'  => '<h4>',
            'after_title'   => '</h4>'
        ) );
    }

    add_action( 'widgets_init', 'register_custom_footer_widget', 20 );



    // Remove theme footer widget
    function remove_theme_footer_widget() {
        unregister_sidebar( 'sidebar-1' );
    }

    add_action( 'widgets_init', 'remove_theme_footer_widget', 20 );



    // Load custom scripts file
    function jku_js_load() {
        wp_register_script( 'jakub-kuron-js', plugins_url( 'jakub-kuron-core.js', __FILE__ ), '', '1.0', true);
        wp_enqueue_script( 'jakub-kuron-js' );
    }

    add_action( 'wp_enqueue_scripts', 'jku_js_load' );



    // Create custom post taxonomies - categories
    function create_cpt_categories() {
        $labels = array(
            'name'              => _x( 'Kategorie przepisów', 'taxonomy general name', 'textdomain' ),
            'singular_name'     => _x( 'Kategoria przepisów', 'taxonomy singular name', 'textdomain' ),
            'search_items'      => __( 'Szukaj kategorii', 'textdomain' ),
            'all_items'         => __( 'Wszystkie kategorie', 'textdomain' ),
            'parent_item'       => __( 'Nadrzędna kategoria', 'textdomain' ),
            'parent_item_colon' => __( 'Nadrzędna kategoria:', 'textdomain' ),
            'edit_item'         => __( 'Edytuj kategorię', 'textdomain' ),
            'update_item'       => __( 'Zaktualizuj kategorię', 'textdomain' ),
            'add_new_item'      => __( 'Dodaj nową kategorię', 'textdomain' ),
            'new_item_name'     => __( 'Dodaj nową nazwę kategorii', 'textdomain' ),
            'menu_name'         => __( 'Kategorie przepisów', 'textdomain' ),
        );

        $args = array(
            'hierarchical'      => true,
            'labels'            => $labels,
            'show_ui'           => true,
            'public'            => true,
            'has_archive'       => true,
            'show_admin_column' => true,
            'query_var'         => true,
            'rewrite'           => array( 'slug' => 'przepisy', 'with_front' => true ),
        );

        register_taxonomy( 'kategorie-przepisow', array( 'przepisy' ), $args );
    }

    add_action( 'init', 'create_cpt_categories', 0 );



    // Create custom post taxonomies - tags
    function create_cpt_tags() {
        $labels = array(
            'name'              => _x( 'Tagi przepisów', 'taxonomy general name', 'textdomain' ),
            'singular_name'     => _x( 'Tag przepisów', 'taxonomy singular name', 'textdomain' ),
            'search_items'      => __( 'Szukaj tagów', 'textdomain' ),
            'all_items'         => __( 'Wszystkie tagi', 'textdomain' ),
            'parent_item'       => null,
            'parent_item_colon' => null,
            'edit_item'         => __( 'Edytuj tag', 'textdomain' ),
            'update_item'       => __( 'Zaktualizuj tag', 'textdomain' ),
            'add_new_item'      => __( 'Dodaj nowy tag', 'textdomain' ),
            'new_item_name'     => __( 'Dodaj nową nazwę tagu', 'textdomain' ),
            'menu_name'         => __( 'Tagi przepisów', 'textdomain' ),
        );

        $args = array(
            'hierarchical'      => false,
            'labels'            => $labels,
            'show_ui'           => true,
            'public'            => true,
            'show_admin_column' => true,
            'update_count_callback' => '_update_post_term_count',
            'query_var'         => true,
            'rewrite'           => array( 'slug' => 'tagi', 'with_front' => true ),
        );

        register_taxonomy( 'tagi-przepisow', array( 'przepisy' ), $args );
    }

    add_action( 'init', 'create_cpt_tags', 0 );


    // Custom post types copied from the old site
    function create_przepis() {
        register_post_type( 'przepisy',
            array(
                'labels' => array(
                    'name' => 'Przepisy',
                    'singular_name' => 'Przepis',
                    'add_new' => 'Dodaj nowy',
                    'add_new_item' => 'Dodaj nowy Przepis',
                    'edit' => 'Edytuj',
                    'edit_item' => 'Edytuj Przepis',
                    'new_item' => 'Nowy Przepis',
                    'view' => 'Zobacz',
                    'view_item' => 'Zobacz Przepis',
                    'search_items' => 'Szukaj Przepisów',
                    'not_found' => 'Nie znaleziono',
                    'not_found_in_trash' => 'Nie znaleziono w koszu',
                    'parent' => 'Parent Przepis'
                ),

                'public'        => true,
                'hierarchical'  => true,
                'show_ui'       => true,
                'has_archive'   => true,
                'menu_position' => 4,
                'supports'      => array( 'title', 'editor', 'thumbnail', 'comments', 'custom-fields' ),
                'taxonomies'    => array( 'kategorie-przepisow', 'tagi-przepisow' ),
                'rewrite'       => array( 'slug' => 'przepisy/%kategorie-przepisow%', 'with_front' => true )
            )
        );
    }

    add_action( 'init', 'create_przepis' );



function wpa_course_post_link( $post_link, $id = 0 ){
    $post = get_post($id);
    if ( is_object( $post ) ){
        $terms = wp_get_object_terms( $post->ID, 'kategorie-przepisow' );
        if( $terms ){
            return str_replace( '%kategorie-przepisow%' , $terms[0]->slug , $post_link );
        }
    }
    return $post_link;
}
add_filter( 'post_type_link', 'wpa_course_post_link', 1, 3 );


    /*
    function create_wideo() {
        register_post_type( 'video',
            array(
                'labels' => array(
                    'name' => 'Wideo',
                    'singular_name' => 'Wideo',
                    'add_new' => 'Dodaj nowy',
                    'add_new_item' => 'Dodaj nowy Wideo',
                    'edit' => 'Edytuj',
                    'edit_item' => 'Edytuj Wideo',
                    'new_item' => 'Nowy Wideo',
                    'view' => 'Zobacz',
                    'view_item' => 'Zobacz Wideo',
                    'search_items' => 'Szukaj Przepisów',
                    'not_found' => 'Nie znaleziono',
                    'not_found_in_trash' => 'Nie znaleziono w koszu',
                    'parent' => 'Parent Wideo'
                ),

                'public' => true,
                'menu_position' => 5,
                'supports' => array( 'title', 'editor', 'thumbnail', 'comments' ),
                'taxonomies' => array('category', 'post_tag')
            )
        );
    }

    add_action( 'init', 'create_wideo' );



    // Unregister videos post type
    function kill_video() {
        unregister_post_type( 'video' );
    }

    add_action( 'init', 'kill_video' );
    */



    // Stop wordpress from adding p tags everywhere
    remove_filter( 'the_content', 'wpautop' );
    remove_filter( 'the_excerpt', 'wpautop' );



    // List 1st level post categories executed by the shortcode
    function cpt_categories_cloud_shortcode() {
        // Get the taxonomy's terms
        $terms = get_terms( array(
            'taxonomy'   => 'kategorie-przepisow',
            'hide_empty' => true,
            'parent'     => 0
        ));

        // Check if any term exists
        if ( !empty( $terms ) && is_array( $terms ) ) {
            $output = '<ul class="jku-categories-cloud-wrapper">';
            foreach ( $terms as $term ) {
                $output .= '<li><a href="' . esc_url(get_term_link( $term )) . '">' . $term->name . '</a></li>';
            }
            $output .= '</ul>';
        }

        return $output;
    }

    add_shortcode( 'cpt-categories-cloud', 'cpt_categories_cloud_shortcode' );



    // List 2nd level post categories executed by the shortcode
    /*
    function cpt_categories_cloud_shortcode_children() {
        // Get the taxonomy's terms
        $terms = get_terms( array(
            'taxonomy'   => 'kategorie-przepisow',
            'hide_empty' => true,
            'parent'     => 0
        ));

        // Check if any term exists
        if ( !empty( $terms ) && is_array( $terms ) ) {
            $output = '<ul class="jku-categories-cloud-wrapper">';
            foreach ( $terms as $term ) {
                $output .= '<li><a href="' . esc_url(get_term_link( $term )) . '">' . $term->name . '</a></li>';
            }
            $output .= '</ul>';
        }

        return $output;
    }

    add_shortcode( 'cpt-categories-cloud', 'cpt_categories_cloud_shortcode' );
    */



    // List random recipes shortcode
    function list_recipes_shortcode() {
        $args = array(
            'post_type'      => 'przepisy',
            'orderby'        => 'rand',
            'posts_per_page' => '8',
            'meta_query' => array(
                array(
                 'key' => '_thumbnail_id',
                 'compare' => 'EXISTS'
                )
            )
        );

        $testimonials = new WP_Query($args);

        $output = '<div class="jku-post-grid-wrapper jku-similar-posts-wrapper">';

            while ($testimonials->have_posts()) : $testimonials->the_post();
                $postid = get_the_ID();

                $output .= '<div class="jku-post-grid-item">';
                    if ( has_post_thumbnail() ) {
                        $output .= '<a class="jku-image-placeholder" href="' . get_permalink() . '" style="background-image: url(' . get_the_post_thumbnail_url($postid, 'full') . ');">';
                    } else {
                        $output .= '<a class="jku-image-placeholder" href="' . get_permalink() . '">';
                    }
                    if ( has_term( 'wideo', 'kategorie-przepisow' ) ) {
                        $output .= '<img class="jku-video-post-icon" src="/wp-content/themes/jakub-kuron/svg/jkuron-icon-video0.svg" /></img>';
                    }
                    $output .= '</a>';

                    $output .= '<h5 class="jku-post-grid-categories">';
                        $term_list = wp_get_post_terms($postid, 'kategorie-przepisow', array("fields" => "all"));
                        foreach($term_list as $term_single) {
                            $output .= '<span><a href="' . esc_url(get_term_link( $term_single )) . '">' . $term_single->name . '</a></span>';
                        }
                    $output .= '</h5>';

                    $output .= '<a class="jku-post-grid-title" href="' . get_permalink() . '">';
                        $output .= '<h3>' . get_the_title() . '</h3>';
                    $output .= '</a>';
                $output .= '</div>';
            endwhile;

        $output .= '</div>';

        wp_reset_postdata();

        return $output;
    }

    add_shortcode( 'list-recipes', 'list_recipes_shortcode' );



    // Enable running shortcodes in widgets
    add_filter( 'widget_text', 'do_shortcode' );



    // Change the except length
    function change_excerpt_length( $length ) {
        return 20;
    }

    add_filter( 'excerpt_length', 'change_excerpt_length', 999 );



    // Change ending of the excerpt
    function change_excerpt_more( $more ) {
        return '..';
    }

    add_filter( 'excerpt_more', 'change_excerpt_more' );



    // List posts shortcode
    function list_posts_shortcode() {
        $args = array(
            'post_type'      => 'post',
            'orderby'        => 'desc',
            'posts_per_page' => '2',
            'meta_query' => array(
                array(
                 'key' => '_thumbnail_id',
                 'compare' => 'EXISTS'
                )
            )
        );

        $posts = new WP_Query($args);

        $output = '<div class="jku-post-grid-items-wrapper">';

            while ($posts->have_posts()) : $posts->the_post();

                $output .= '<div class="jku-post-grid-item">';

                    if ( has_post_thumbnail() ) {
                        $output .= '<a class="jku-post-grid-image" href="' . get_permalink() . '">' . get_the_post_thumbnail() . '</a>';
                    }
                    $output .= '<h5 class="jku-post-grid-date">' . get_the_date( 'j F Y' ) . '</h5>';
                    $output .= '<a class="jku-post-grid-title" href="' . get_permalink() . '"><h3>' . get_the_title() . '</h3></a>';
                    $output .= '<p>' . get_the_excerpt() . '</p>';

                $output .= '</div>';

            endwhile;

        $output .= '</div>';


        wp_reset_postdata();

        return $output;
    }

    add_shortcode( 'list-posts', 'list_posts_shortcode' );



    //
    // WooCommerce functions
    //



    // Remove WooCommerce image gallery features
    function remove_zoom_lightbox_theme_support() {
        remove_theme_support( 'wc-product-gallery-zoom' );
        remove_theme_support( 'wc-product-gallery-lightbox' );
        remove_theme_support( 'wc-product-gallery-slider' );
    }

    add_action( 'after_setup_theme', 'remove_zoom_lightbox_theme_support', 100000 );



    // Remove link from single product image
    function remove_product_image_link( $html, $post_id ) {
        return preg_replace( "!<(a|/a).*?>!", '', $html );
    }

    add_filter( 'woocommerce_single_product_image_thumbnail_html', 'remove_product_image_link', 10, 2 );



    // Remove WooCommerce resources from non woocommerce pages
    function remove_woocommerce_scripts() {
        if ( function_exists( 'is_woocommerce' ) ) {
            if ( ! is_woocommerce() && ! is_cart() && ! is_checkout() ) {
                remove_action( 'wp_enqueue_scripts', [WC_Frontend_Scripts::class, 'load_scripts'] );
                remove_action( 'wp_print_scripts', [WC_Frontend_Scripts::class, 'localize_printed_scripts'], 5 );
                remove_action( 'wp_print_footer_scripts', [WC_Frontend_Scripts::class, 'localize_printed_scripts'], 5 );
            }
        }
    }

    add_action( 'template_redirect', 'remove_woocommerce_scripts', 100000 );



    // Remove WooCommerce styles
    add_filter( 'woocommerce_enqueue_styles', '__return_false', 100000 );



    // Remove other not required styles
    function remove_other_css() {

        // WooCommerce
        wp_dequeue_style('wc-block-style');
        wp_deregister_style('wc-block-style');
        wp_dequeue_style('woocommerce-inline');
        wp_deregister_style('woocommerce-inline');

        // WP Includes
        wp_dequeue_style('wp-block-library');
        wp_deregister_style('wp-block-library');
        wp_dequeue_style('wp-block-library-theme');
        wp_deregister_style('wp-block-library-theme');

        // Twenty Nineteen print stylesheet
        wp_dequeue_style('twentynineteen-print-style');
        wp_deregister_style('twentynineteen-print-style');

        // Cookie Notice
        wp_dequeue_style('cookie-notice-front');
        wp_deregister_style('cookie-notice-front');

        // Contact Form 7
        wp_dequeue_style('contact-form-7');
        wp_deregister_style('contact-form-7');

        // Post Grid
        wp_dequeue_style('post_grid_style');
        wp_deregister_style('post_grid_style');
        wp_dequeue_style('font-awesome-5');
        wp_deregister_style('font-awesome-5');
        wp_dequeue_style('style.skins');
        wp_deregister_style('style.skins');
        wp_dequeue_style('style.layout');
        wp_deregister_style('style.layout');
        wp_dequeue_style('style.animate');
        wp_deregister_style('style.animate');
    }

    add_action( 'wp_enqueue_scripts','remove_other_css', 100000 );



    // Add custom css to WooCommerce pages
    function register_custom_woo_style() {
        if ( function_exists( 'is_woocommerce' ) ) {
            if ( is_woocommerce() || is_cart() || is_checkout() ) {
                wp_register_style( 'jkuron-woo-styles', '/wp-content/themes/jakub-kuron/woocommerce/style.css' );
                wp_enqueue_style( 'jkuron-woo-styles' );
            }
        }
    }

    add_action( 'wp_enqueue_scripts', 'register_custom_woo_style' );



    // Change posts per page Woo
    function redefine_products_per_page( $per_page ) {
        $per_page = 9;
        return $per_page;
    }

    add_filter( 'loop_shop_per_page', 'redefine_products_per_page', 100000 );



    // Register custom footer widgets which will be the footer columns areas
    function register_woocommerce_sidebar() {
        register_sidebar( array(
            'name' => __( 'WooCommerce Shop Page Sidebar', 'twentynineteen' ),
            'id' => 'woocommerce-shop-page-sidebar',
            'before_widget' => '',
            'after_widget'  => '',
            'before_title'  => '',
            'after_title'   => ''
        ) );
    }

    add_action( 'widgets_init', 'register_woocommerce_sidebar', 20 );



    // Breadcrumbs: Change home label
    function wcc_change_breadcrumb_home_text( $defaults ) {
        $defaults['home'] = 'Jakub Kuroń';
        return $defaults;
    }

    add_filter( 'woocommerce_breadcrumb_defaults', 'wcc_change_breadcrumb_home_text' );



    // Breadcrumbs: Change home link
    function woo_custom_breadrumb_home_url() {
        return '/';
    }

    add_filter( 'woocommerce_breadcrumb_home_url', 'woo_custom_breadrumb_home_url' );



    // Breadcrumbs: Change delimiter
    function wcc_change_breadcrumb_delimiter( $defaults ) {
        $defaults['delimiter'] = ' <span class="jku-separator"></span> ';
        return $defaults;
    }

    add_filter( 'woocommerce_breadcrumb_defaults', 'wcc_change_breadcrumb_delimiter' );



    // WooCommerce - add plus / minus quantity buttons
    function display_quantity_buttons() {
        echo '<div class="jku-quantity-buttons-wrapper"><button type="button" class="plus" >+</button><button type="button" class="minus" >-</button></div>';
    }

    add_action( 'woocommerce_after_add_to_cart_quantity', 'display_quantity_buttons' );

    function add_cart_quantity_plus_minus() {
        if ( ! is_product() ) return;
        ?>
            <script type="text/javascript">
                jQuery(document).ready(function($){
                    $('form.cart').on( 'click', 'button.plus, button.minus', function() {

                        // Get current quantity values
                        var qty  = $( this ).closest( 'form.cart' ).find( '.qty' );
                        var val  = parseFloat(qty.val());
                        var max  = parseFloat(qty.attr( 'max' ));
                        var min  = parseFloat(qty.attr( 'min' ));
                        var step = parseFloat(qty.attr( 'step' ));

                        // Change the value if plus or minus
                        if ( $( this ).is( '.plus' ) ) {
                            if ( max && ( max <= val ) ) {
                                qty.val( max );
                            } else {
                                qty.val( val + step );
                            }
                        } else {
                            if ( min && ( min >= val ) ) {
                                qty.val( min );
                            } else if ( val > 1 ) {
                                qty.val( val - step );
                            }
                        }

                    });
                });
            </script>
        <?php
    }

    add_action( 'wp_footer', 'add_cart_quantity_plus_minus' );



    // Changing the minimum and maximum quantity for all the WooCommerce products
    function woocommerce_quantity_input_min_callback( $min, $product ) {
        $min = 1;
        return $min;
    }

    add_filter( 'woocommerce_quantity_input_min', 'woocommerce_quantity_input_min_callback', 10, 2 );

    function woocommerce_quantity_input_max_callback( $max, $product ) {
        $max = 99;
        return $max;
    }

    add_filter( 'woocommerce_quantity_input_max', 'woocommerce_quantity_input_max_callback', 10, 2 );



    // Remove opening terms and conditions in the same page. Open in the new tab instead.
    function disable_wc_terms_toggle() {
        wp_add_inline_script( 'wc-checkout', "jQuery( document ).ready( function() { jQuery( document.body ).off( 'click', 'a.woocommerce-terms-and-conditions-link' ); } );" );
    }

    add_action( 'wp_enqueue_scripts', 'disable_wc_terms_toggle', 1000 );



    // Modify image width theme support
    function modify_theme_support() {
        $theme_support = get_theme_support( 'woocommerce' );
        $theme_support = is_array( $theme_support ) ? $theme_support[0] : array();

        $theme_support['single_image_width'] = 660;
        $theme_support['thumbnail_image_width'] = 660;

        remove_theme_support( 'woocommerce' );
        add_theme_support( 'woocommerce', $theme_support );
    }

    add_action( 'after_setup_theme', 'modify_theme_support', 10 );

?>