Business Bloomer WooCommerce: Bulk Sale Price

<?php

/*
 * Plugin Name: Business Bloomer WooCommerce: Bulk Sale Price
 * Description: Set a discount percentage to apply to all products.
 * Plugin URI: https://www.businessbloomer.com/shop/plugins/woocommerce-bulk-sale-price/
 * Update URI: https://www.businessbloomer.com/shop/plugins/woocommerce-bulk-sale-price/
 * Author: Business Bloomer
 * Author URI: https://www.businessbloomer.com
 * Text Domain: bbloomer-woocommerce-bulk-sale-price
 * Requires Plugins: woocommerce
 * Version: 0.1.20231101
 */

defined( 'ABSPATH' ) || exit;

include_once( ABSPATH . 'wp-admin/includes/plugin.php' );
if ( ! is_plugin_active( 'woocommerce/woocommerce.php' ) ) {
    return;
}

define( 'BBWBSP', 'https://www.businessbloomer.com/wp-json/bb/v1/downloads?product_id=XXXXXX' );

add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), 'bbwbsp_action_links', 9999, 4 );

function bbwbsp_action_links( $links, $plugin_file, $plugin_data, $context ) {
    if ( ! isset( $plugin_data ) ) return $links;
    $plugin_links = array(
        '<a href="' . admin_url( 'admin.php?page=wc-settings&tab=products&section=inventory#bbwcofaw-start' ) . '">' . esc_html__( 'Settings', 'woocommerce' ) . '</a>',
        '<a href="' . $plugin_data['PluginURI'] . '#tab-docs" target="_blank">' . esc_html__( 'Docs', 'woocommerce' ) . '</a>',
        '<a href="https://businessbloomer.clarityflow.com/i/intake?title=' . rawurlencode( $plugin_data['Name'] ) . rawurlencode( ' ' ) . $plugin_data['Version'] . '" target="_blank">' . esc_html__( 'Premium Support', 'woocommerce' ) . '</a>',
        '<a href="' . $plugin_data['PluginURI'] . '#tab-reviews" target="_blank">' . esc_html__( 'Add a review', 'woocommerce' ) . '</a>',
    );
    return array_merge( $plugin_links, $links );
}

add_filter( 'plugin_row_meta', 'bbwbsp_hide_view_details', 9999, 4 );

function bbwbsp_hide_view_details( $plugin_meta, $plugin_file, $plugin_data, $status ) {
    if ( isset( $plugin_data['TextDomain'] ) && $plugin_data['TextDomain'] == plugin_basename( __DIR__ ) ) unset( $plugin_meta[2] );
    return $plugin_meta;
}

add_filter( 'plugins_api', 'bbwbsp_plugin_view_version_details', 9999, 3 );

function bbwbsp_plugin_view_version_details( $res, $action, $args ) {
    if ( 'plugin_information' !== $action ) return $res;
    if ( $args->slug !== plugin_basename( __DIR__ ) ) return $res;
    $response = wp_remote_get( BBWBSP, array(  'headers' => array( 'Accept' => 'application/json' ) ) );
    if ( ( ! is_wp_error( $response ) ) && ( 200 === wp_remote_retrieve_response_code( $response ) ) ) {
        $download = json_decode( wp_remote_retrieve_body( $response ), true );
    } else return $res;
    $res = new stdClass();
    $res->name = $download['name'];
    $res->slug = plugin_basename( __DIR__ );
    $res->path = plugin_basename( __DIR__ ) . '/' . plugin_basename( __DIR__ ) . '.php';
    $res->version = $download['version'];
    $res->download_link = $download['download_link'];
    $res->sections = array(
        'description' => $download['description'],
    );
    return $res;
}

add_filter( 'update_plugins_www.businessbloomer.com', function( $update, array $plugin_data, string $plugin_file, $locales ) {
    if ( $plugin_file !== plugin_basename( __DIR__ ) . '/' . plugin_basename( __DIR__ ) . '.php' ) return $update;    if ( ! empty( $update ) ) return $update;
    $response = wp_remote_get( BBWBSP, array(  'headers' => array( 'Accept' => 'application/json' ) ) );
    if ( ( ! is_wp_error( $response ) ) && ( 200 === wp_remote_retrieve_response_code( $response ) ) ) {
        $download = json_decode( wp_remote_retrieve_body( $response ), true );
    } else return $update;
    if ( ! version_compare( $plugin_data['Version'], $download['version'], '<' ) ) return $update;
    return [
        'slug' => plugin_basename( __DIR__ ),
        'version' => $download['version'],
        'url' => $plugin_data['PluginURI'],
        'package' => $download['download_link'],
    ];
}, 9999, 4 );

// Return the wp_options option names - used in a number of functions.
function bbwbsp_settings_option_name() {
    return 'bb_bsp';
}

// Return the wp_options option names - used in a number of functions.
function bbwbsp_get_default_option_values() {
    return array( 'enable_discount' => '0', 'percent_discount' => 'no' );
}

// Verify and save the information submitted in the above form.
add_action( 'admin_init', 'bbwbsp_save_discount_details' );

function bbwbsp_save_discount_details() {
    // Note that $_POST['enable_discount'] is not in isset() check as it is a checkbox
    // and is not submitted if the checkbox is not checked.
    if ( isset( $_GET['page'], $_GET['tab'], $_GET['section'], $_POST['percent_discount'], $_POST['_wpnonce'] )
        && 'wc-settings' == $_GET['page'] && 'products' == $_GET['tab'] && 'inventory' == $_GET['section'] && wp_verify_nonce( $_POST['_wpnonce'], 'woocommerce-settings' ) ) {
        if ( current_user_can( 'manage_woocommerce' ) ) {
            //$default_options = array( 'enable_discount' => '0', 'percent_discount' => 'no' );
            $stored_options = get_option( bbwbsp_settings_option_name(), array() );
            $bbaccpc_options = wp_parse_args( $stored_options, bbwbsp_get_default_option_values() );

            if ( isset( $_POST['enable_discount'] ) ) {
                if ( '1' == $_POST['enable_discount'] ) {
                    $bbaccpc_options['enable_discount'] = 'yes';
                }
            }
            else {
                $bbaccpc_options['enable_discount'] = 'no';
            }
            if ( isset( $_POST['percent_discount'] ) ) {
                $discount = absint( $_POST['percent_discount'] );
                if ( 0 < $discount && $discount < 100 ) {
                    $bbaccpc_options['percent_discount'] = $discount;
                }
            }

            update_option( bbwbsp_settings_option_name(), $bbaccpc_options );
        }
    }
}

// Settings section displayed in WooCommerce/Settings/Advanced.
add_action( 'woocommerce_settings_products', 'bbwbsp_settings_fields', 20 );

function bbwbsp_settings_fields( $email_obj ) {
    $plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/' . plugin_basename( __FILE__ ) );
    $quick_links = bbwbsp_action_links( array(), '', $plugin_data, '' );
    array_shift( $quick_links );

    if ( isset( $_GET['section'] ) && 'inventory' == $_GET['section'] ) {
        echo '<div id="bbwcofaw-start" style="border: 2px dashed red; background: #fae6e6; padding: 0 2em 1em;"><h2>', $plugin_data['Name'], ' <small>v ', $plugin_data['Version'], '</small></h2>';
        echo '<p>' . $plugin_data['Description'] . '</p>';
        echo '<h4>Quick links: ' . implode( ' - ', $quick_links ) . '</h4>';
        echo '<table class="form-table"><tbody>';

        //$default_options = array( 'enable_discount' => 'no', 'percent_discount' => null );
        $stored_options = get_option( bbwbsp_settings_option_name(), array() );
        $bbaccpc_options = wp_parse_args( $stored_options, bbwbsp_get_default_option_values() );

        $options = array();

        $args = array(
                    'title'       => __( 'Enable store wide discount', 'bbloomer-woocommerce-bulk-sale-price' ),
                    'desc'        => __( 'Enable the discount percentage specified below.', 'bbloomer-woocommerce-bulk-sale-price' ),
                    'id'          => 'enable_discount',
                    'default'     => 'no',
                    'type'        => 'checkbox',
                    'value'       => $bbaccpc_options['enable_discount'],
                    'autoload'    => false,
                );
        $options[] = $args;

        $args = array(
                    'title'       => __( 'Percentage discount', 'bbloomer-woocommerce-bulk-sale-price' ),
                    'desc'        => __( 'Enter the percentage discount, between 0 and 100.', 'bbloomer-woocommerce-bulk-sale-price' ),
                    'id'          => 'percent_discount',
                    //'placeholder' => esc_html__( 'Enter maximum cart amount', 'bbloomer-woocommerce-bulk-sale-price' ),
                    'type'        => 'number',
                    'value'       => $bbaccpc_options['percent_discount'],
                    'autoload'    => false,
                );
        $options[] = $args;


        // Render the fields.
        echo woocommerce_admin_fields( $options );

        echo '</tr>';

        echo '</tbody></table>';
        echo '<p class="submit"><a id="bbacppcsave" class="button-primary">', esc_html__( 'Save changes', 'woocommerce' ), '</a></p>';
        echo '</div>';

        wc_enqueue_js( "
            $('#bbacppcsave').click(function(e){
                e.preventDefault();
                $('.button-primary.woocommerce-save-button').trigger('click');
            });
        " );
    }
}


add_filter( 'woocommerce_get_price_html', 'bbwbsp_alter_price_display', 9999, 2 );

function bbwbsp_alter_price_display( $price_html, $product ) {
    // Do not run code in backend.
    if ( is_admin() ) { return $price_html; }

    $stored_options = get_option( bbwbsp_settings_option_name(), array() );
    $bbaccpc_options = wp_parse_args( $stored_options, bbwbsp_get_default_option_values() );

    // Do not run if discounts disabled.
    if ( 'yes' != $bbaccpc_options['enable_discount'] ) { return $price_html; }

    $orig_price = wc_get_price_to_display( $product );
    $price_html = wc_price( $orig_price * ( 100 - $bbaccpc_options['percent_discount'] ) / 100 );

    return $price_html;
}


add_action( 'woocommerce_before_calculate_totals', 'bbwbsp_alter_price_cart', 9999 );

function bbwbsp_alter_price_cart( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) ) return;

    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 ) return;

    $stored_options = get_option( bbwbsp_settings_option_name(), array() );
    $bbaccpc_options = wp_parse_args( $stored_options, bbwbsp_get_default_option_values() );

    // Do not run if discounts disabled.
    if ( 'yes' != $bbaccpc_options['enable_discount'] ) { return; }

    // Loop through cart items and apply discount
    foreach ( $cart->get_cart() as $cart_item_key => $cart_item ) {
        $product = $cart_item['data'];
        $price = $product->get_price();
        $cart_item['data']->set_price( $price * ( 100 - $bbaccpc_options['percent_discount'] ) / 100 );
    }
}