EDD Upgrade Notice

edd-un.php

<?php
/**
 * @wordpress-plugin
 * Plugin Name:       EDD Upgrade Notice
 * Plugin URI:        http://ayecode.io/
 * Description:       Add upgrade notice support to EDD Software Licencing.
 * Version:           1.0.0
 * Author:            Stiofan O'Connor
 * Author URI:        http://ayecode.io/
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 * Text Domain:       external-updates
 * Domain Path:       /languages
 */


add_action('edd_sl_license_metabox_after','aye_edd_sl_upgrade_notice_input',10,1);

function aye_edd_sl_upgrade_notice_input($post_id){


	$is_bundle = ( 'bundle' == edd_get_download_type( $post_id ) );

	$enabled    = get_post_meta( $post_id, '_edd_sl_enabled', true ) ? true : false;

	$upgrade_notice       = get_post_meta( $post_id, '_edd_sl_upgrade_notice', true );


	$display_no_bundle = ( $enabled && ! $is_bundle ) ? '' : ' style="display: none;"';


	echo '<tr' . $display_no_bundle . ' class="edd_sl_toggled_row edd_sl_nobundle_row">';
	echo '<td class="edd_field_type_textarea" colspan="2">';
	do_action( 'edd_sl_license_metabox_before_upgrade_notice', $post_id );
	echo '<label for="edd_sl_upgrade_notice"><strong>' . __( 'Upgrade Notice', 'edd_sl' ) . '</strong></label><br/>';
	echo '<p>';
	echo '<textarea name="edd_sl_upgrade_notice" class="edd-sl-keys-input" id="edd_sl_upgrade_notice" rows="10">' . esc_textarea( stripslashes( $upgrade_notice ) ) . '</textarea>';
	echo '</p>';
	echo '<div class="description">' . __( 'Enter product Upgrade Notice, this must be to the WordPress standards', 'edd_sl' ) . '</div>';
	printf(
		'<span alt="f223" class="edd-help-tip dashicons dashicons-editor-help" title="' . esc_attr__( '%s' ) . '"></span>',
		__( '= 1.2.30 = <br /> This is an upgrade notice.', 'edd_sl' )
	);
	do_action( 'edd_sl_license_metabox_after_upgrade_notice', $post_id );
	echo '</td>';
	echo '</tr>';

}

/**
 * Save data from meta box
 *
 * @since 1.0
 */
function aye_edd_sl_download_meta_box_save( $post_id ) {

	global $post;

	// verify nonce
//	if ( ! isset( $_POST['edd_sl_meta_box_nonce'] ) || ! wp_verify_nonce( $_POST['edd_sl_meta_box_nonce'], basename( __FILE__ ) ) ) {
//		return $post_id;
//	}

	// Check for auto save / bulk edit
	if ( ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) || ( defined( 'DOING_AJAX') && DOING_AJAX ) || isset( $_REQUEST['bulk_edit'] ) ) {
		return $post_id;
	}

	if ( isset( $_POST['post_type'] ) && 'download' != $_POST['post_type'] ) {
		return $post_id;
	}

	if ( ! current_user_can( 'edit_post', $post_id ) ) {
		return $post_id;
	}

	if ( isset( $_POST['edd_sl_upgrade_notice'] ) ) {

		update_post_meta( $post_id, '_edd_sl_upgrade_notice', addslashes( $_POST['edd_sl_upgrade_notice'] ) ) ;
	} else {
		delete_post_meta( $post_id, '_edd_sl_upgrade_notice' );
	}

}
add_action( 'save_post', 'aye_edd_sl_download_meta_box_save' );


Add_filter('edd_sl_license_response','aye_edd_sl_license_response',10,3);


function aye_edd_sl_license_response($response, $download, $download_beta){

	if(!isset($response['upgrade_notice']) && !isset($response['upgrade_notice_raw']) && isset($download->ID)){
		$response['upgrade_notice_raw'] = get_post_meta( $download->ID, '_edd_sl_upgrade_notice', true);
	}

	return $response;
}