show-vendor-coupon-on-single-product-page

add_action('woocommerce_single_product_summary', function() {
    echo do_shortcode('[coupon_applicable_on_product]');
});

add_shortcode('coupon_applicable_on_product', function($attr) {
    global $WCFM, $post;
    if( !apply_filters( 'wcfm_is_pref_store_coupons', true ) ) return;
    if ( !is_product() || !function_exists( 'wc_coupons_enabled' ) || ( function_exists( 'wc_coupons_enabled' ) && !wc_coupons_enabled() ) ) return;
    $store_id = $post->post_author;
    if( !$store_id ) return;
    $is_store_offline = get_user_meta( $store_id, '_wcfm_store_offline', true );
    if ( $is_store_offline ) return;
    $is_disable_vendor = get_user_meta( $store_id, '_disable_vendor', true );
    if ( $is_disable_vendor ) return;
    if( !$WCFM->wcfm_vendor_support->wcfm_vendor_has_capability( $store_id, 'manage_coupons' ) ) return;
    $coupon_args = array(
        'posts_per_page'   => -1,
        'offset'           => 0,
        'category'         => '',
        'category_name'    => '',
        'orderby'          => 'date',
        'order'            => 'DESC',
        'include'          => '',
        'exclude'          => '',
        //'meta_key'         => 'show_on_store',
        //'meta_value'       => 'yes',
        'post_type'        => 'shop_coupon',
        'post_mime_type'   => '',
        'post_parent'      => '',
        'author'           => $store_id,
        'post_status'      => array('publish'),
        'suppress_filters' => 0
    );
    $wcfm_store_coupons = get_posts( $coupon_args );
    if( empty( $wcfm_store_coupons ) ) return;
    $content = '';
    foreach( $wcfm_store_coupons as $wcfm_store_coupon ) {
        $wc_coupon = new WC_Coupon( $wcfm_store_coupon->ID );
        if ( $wc_coupon->get_date_expires() && ( current_time( 'timestamp', true ) > $wc_coupon->get_date_expires()->getTimestamp() ) ) continue;
        $product_ids = explode(',', get_post_meta( $wcfm_store_coupon->ID, 'product_ids', true));
        $excluded_product_ids = explode(',', get_post_meta( $wcfm_store_coupon->ID, 'exclude_product_ids', true));
        if( !empty($excluded_product_ids) && in_array($post->ID, $excluded_product_ids) ) continue;
        if( !empty($product_ids) && !in_array($post->ID, $product_ids) ) continue;
        $free_shipping = ( get_post_meta( $wcfm_store_coupon->ID, 'free_shipping', true) == 'yes' ) ? 'enable' : '';
        if( $free_shipping ) {
            $content .= '<span class="wcfmmp-store-coupon-single tips text_tip" data-tip="' . __( 'FREE Shipping Coupon', 'wc-multivendor-marketplace' ) . ($wc_coupon->get_date_expires() ? '<br>' . __( 'Expiry Date: ', 'wc-multivendor-marketplace' ) . $wc_coupon->get_date_expires()->date_i18n( 'F j, Y' ) : '' ) . '<br>' . $wcfm_store_coupon->post_excerpt . '">' . $wcfm_store_coupon->post_title . '</span>';
        } else {
            $content .= '<span class="wcfmmp-store-coupon-single tips text_tip" data-tip="' . esc_html( wc_get_coupon_type( $wc_coupon->get_discount_type() ) ) . ': ' . esc_html( wc_format_localized_price( $wc_coupon->get_amount() ) ) . ($wc_coupon->get_date_expires() ? '<br>' . __( 'Expiry Date: ', 'wc-multivendor-marketplace' ) . $wc_coupon->get_date_expires()->date_i18n( 'F j, Y' ) : '' ) . '<br>' . $wcfm_store_coupon->post_excerpt . '">' . $wcfm_store_coupon->post_title . '</span>';
        }
    }
    if($content) {
        echo '<div class="wcfmmp_store_coupons">' . $content . '</div>';
    }
});