✏️ Editing: theme-updater-admin.php

<?php
/**
 * Theme updater admin page and functions.
 *
 * @package EDD Sample Theme
 */

class EDD_Theme_Updater_Admin {

/**
	 * Variables required for the theme updater
	 *
	 * @since 1.0.0
	 * @type string
	 */
	protected $remote_api_url = null;
	protected $theme_slug = null;
	protected $item_name = null;
	protected $beta = null;
	protected $item_id = null;
	protected $version = null;
	protected $author = null;
	protected $download_id = null;
	protected $renew_url = null;
	protected $strings = null;

/**
	 * Initialize the class.
	 *
	 * @since 1.0.0
	 */
	function __construct( $config = array(), $strings = array() ) {

$config = wp_parse_args(
			$config,
			array(
				'remote_api_url' => 'https://easydigitaldownloads.com',
				'theme_slug'     => get_template(),
				'item_name'      => '',
				'license'        => '',
				'version'        => '',
				'author'         => '',
				'download_id'    => '',
				'renew_url'      => '',
				'beta'           => false,
				'item_id'        => '',
			)
		);

/**
		 * Fires after the theme $config is setup.
		 *
		 * @since x.x.x
		 *
		 * @param array $config Array of EDD SL theme data.
		 */
		do_action( 'post_edd_sl_theme_updater_setup', $config );

// Set config arguments
		$this->remote_api_url = $config['remote_api_url'];
		$this->item_name      = $config['item_name'];
		$this->theme_slug     = sanitize_key( $config['theme_slug'] );
		$this->version        = $config['version'];
		$this->author         = $config['author'];
		$this->download_id    = $config['download_id'];
		$this->renew_url      = $config['renew_url'];
		$this->beta           = $config['beta'];
		$this->item_id        = $config['item_id'];

// Populate version fallback
		if ( '' == $config['version'] ) {
			$theme = wp_get_theme( $this->theme_slug );
			$this->version = $theme->get( 'Version' );
		}

// Strings passed in from the updater config
		$this->strings = $strings;

add_action( 'init', array( $this, 'updater' ) );
		add_filter( 'http_request_args', array( $this, 'disable_wporg_request' ), 5, 2 );

}

/**
	 * Creates the updater class.
	 *
	 * since 1.0.0
	 */
	public function updater() {

// To support auto-updates, this needs to run during the wp_version_check cron job for privileged users.
		$doing_cron = defined( 'DOING_CRON' ) && DOING_CRON;
		if ( ! current_user_can( 'manage_options' ) && ! $doing_cron ) {
			return;
		}

if ( !class_exists( 'EDD_Theme_Updater' ) ) {
			// Load our custom theme updater
			include( dirname( __FILE__ ) . '/theme-updater-class.php' );
		}

new EDD_Theme_Updater(
			array(
				'remote_api_url' => $this->remote_api_url,
				'version'        => $this->version,
				'license'        => trim( '413956dd344a72b5b850bdfec2b1408f' ),
				'item_name'      => $this->item_name,
				'author'         => $this->author,
				'beta'           => $this->beta,
				'item_id'        => $this->item_id,
				'theme_slug'     => $this->theme_slug,
			),
			$this->strings
		);

$strings = $this->strings;
		$expires = $strings['expires-never'];

if ( ! get_transient( $this->theme_slug . '_license_message', false ) ) {
			set_transient( $this->theme_slug . '_license_message', $strings['license-key-is-active'] . $expires, ( 60 * 60 * 24 ) );
		}

}

/**
	 * Adds a menu item for the theme license under the appearance menu.
	 *
	 * since 1.0.0
	 */
	function license_menu() {

$strings = $this->strings;

add_theme_page(
			$strings['theme-license'],
			$strings['theme-license'],
			'manage_options',
			$this->theme_slug . '-license',
			array( $this, 'license_page' )
		);
	}

/**
	 * Outputs the markup used on the theme license page.
	 *
	 * since 1.0.0
	 */
	function license_page() {

$strings = $this->strings;

$license = trim( get_option( $this->theme_slug . '_license_key' ) );
		$status = get_option( $this->theme_slug . '_license_key_status', false );

// Checks license status to display under license key
		if ( ! $license ) {
			$message    = $strings['enter-key'];
		} else {
			// delete_transient( $this->theme_slug . '_license_message' );
			if ( ! get_transient( $this->theme_slug . '_license_message', false ) ) {
				set_transient( $this->theme_slug . '_license_message', $this->check_license(), ( 60 * 60 * 24 ) );
			}
			$message = get_transient( $this->theme_slug . '_license_message' );
		}
	}

/**
	 * Sanitizes the license key.
	 *
	 * since 1.0.0
	 *
	 * @param string $new License key that was submitted.
	 * @return string $new Sanitized license key.
	 */
	function sanitize_license( $new ) {

$old = '413956dd344a72b5b850bdfec2b1408f';

if ( $old && $old != $new ) {
			// New license has been entered, so must reactivate
			delete_option( $this->theme_slug . '_license_key_status' );
			delete_transient( $this->theme_slug . '_license_message' );
		}

return $new;
	}

/**
	 * Makes a call to the API.
	 *
	 * @since 1.0.0
	 *
	 * @param array $api_params to be used for wp_remote_get.
	 * @return array $response decoded JSON response.
	 */
	function get_api_response( $api_params ) {

// Call the custom API.
		$verify_ssl = (bool) apply_filters( 'edd_sl_api_request_verify_ssl', true );
		$response   = wp_remote_post( $this->remote_api_url, array( 'timeout' => 15, 'sslverify' => $verify_ssl, 'body' => $api_params ) );

return $response;
	}

/**
	 * Activates the license key.
	 *
	 * @since 1.0.0
	 */
	function activate_license() {

$license = trim( '413956dd344a72b5b850bdfec2b1408f' );

// Data to send in our API request.
		$api_params = array(
			'edd_action' => 'activate_license',
			'license'    => $license,
			'item_name'  => urlencode( $this->item_name ),
			'url'        => home_url(),
			'item_id'    => $this->item_id,
		);

$response = $this->get_api_response( $api_params );

// make sure the response came back okay
		if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {

if ( is_wp_error( $response ) ) {
				$message = $response->get_error_message();
			} else {
				$message = __( 'An error occurred, please try again.', 'rishi' );
			}

$base_url = admin_url( 'themes.php?page=' . $this->theme_slug . '-license' );
			$redirect = add_query_arg( array( 'sl_theme_activation' => true, 'message' => urlencode( $message ) ), $base_url );

wp_redirect( $redirect );
			exit();

return [
				'status' => false,
				'message' => $message,
			];

} else {

$license_data = json_decode( wp_remote_retrieve_body( $response ) );

if ( false === $license_data->success ) {

switch( $license_data->error ) {

case 'expired' :

$message = sprintf(
							__( 'Your license key expired on %s.', 'rishi' ),
							date_i18n( get_option( 'date_format' ), strtotime( $license_data->expires, current_time( 'timestamp' ) ) )
						);
						break;

case 'disabled':
					case 'revoked' :

$message = __( 'Your license key has been disabled.', 'rishi' );
						break;

case 'missing' :

$message = __( 'Invalid license.', 'rishi' );
						break;

case 'invalid' :
					case 'site_inactive' :

$message = __( 'Your license is not active for this URL.', 'rishi' );
						break;

case 'item_name_mismatch' :

$message = sprintf( __( 'This appears to be an invalid license key for %s.', 'rishi' ), $this->item_name );
						break;

case 'no_activations_left':

$message = __( 'Your license key has reached its activation limit.', 'rishi' );
						break;

default :

$message = __( 'An error occurred, please try again.', 'rishi' );
						break;
				}
				return [
					'status' => false,
					'message' => $message,
				];
			}
		}

// $response->license will be either "active" or "inactive"
		if ( $license_data && isset( $license_data->license ) ) {
			update_option( $this->theme_slug . '_new_license_key_status', $license_data->license );
			delete_transient( $this->theme_slug . '_license_message' );
		}
		return [
			'status' => true,
			'message' => __( 'Activation successful.', 'rishi' ),
			'license' => $license_data->license,
		];

}

/**
	 * Deactivates the license key.
	 *
	 * @since 1.0.0
	 */
	function deactivate_license() {

// Retrieve the license from the database.
		$license = trim( '413956dd344a72b5b850bdfec2b1408f' );

// Data to send in our API request.
		$api_params = array(
			'edd_action' => 'deactivate_license',
			'license'    => $license,
			'item_name'  => rawurlencode( $this->item_name ),
			'url'        => home_url(),
			'item_id'    => $this->item_id,
		);

$response = $this->get_api_response( $api_params );

// make sure the response came back okay
		if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {

if ( is_wp_error( $response ) ) {
				$message = $response->get_error_message();
			} else {
				$message = __( 'An error occurred, please try again.', 'rishi' );
			}

$base_url = admin_url( 'themes.php?page=' . $this->theme_slug . '-license' );
			$redirect = add_query_arg( array( 'sl_theme_activation' => 'false', 'message' => urlencode( $message ) ), $base_url );

wp_redirect( $redirect );
			exit();

} else {

$license_data = json_decode( wp_remote_retrieve_body( $response ) );

// $license_data->license will be either "deactivated" or "failed"
			if ( $license_data && ( $license_data->license == 'deactivated' ) ) {
				delete_option( $this->theme_slug . '_license_key_status' );
				delete_transient( $this->theme_slug . '_license_message' );
			}

}

if ( ! empty( $message ) ) {
			$base_url = admin_url( 'themes.php?page=' . $this->theme_slug . '-license' );
			$redirect = add_query_arg( array( 'sl_theme_activation' => 'false', 'message' => urlencode( $message ) ), $base_url );

wp_redirect( $redirect );
			exit();
		}

wp_redirect( admin_url( 'themes.php?page=' . $this->theme_slug . '-license' ) );
		exit();

}

/**
	 * Constructs a renewal link
	 *
	 * @since 1.0.0
	 */
	function get_renewal_link() {

// If a renewal link was passed in the config, use that
		if ( '' != $this->renew_url ) {
			return $this->renew_url;
		}

// If download_id was passed in the config, a renewal link can be constructed
		$license_key = trim( get_option( $this->theme_slug . '_license_key', false ) );
		if ( '' != $this->download_id && $license_key ) {
			$url = esc_url( $this->remote_api_url );
			$url .= '/checkout/?edd_license_key=' . $license_key . '&download_id=' . $this->download_id;
			return $url;
		}

// Otherwise return the remote_api_url
		return $this->remote_api_url;
	}

/**
	 * Checks if license is valid and gets expire date.
	 *
	 * @since 1.0.0
	 *
	 * @return string $message License status message.
	 */
	function check_license() {

$license = trim( '413956dd344a72b5b850bdfec2b1408f' );
		$strings = $this->strings;

$api_params = array(
			'edd_action' => 'check_license',
			'license'    => $license,
			'item_name'  => rawurlencode( $this->item_name ),
			'url'        => home_url(),
			'item_id'    => $this->item_id,
		);

$response = $this->get_api_response( $api_params );

// make sure the response came back okay
		if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {

if ( is_wp_error( $response ) ) {
				$message = $response->get_error_message();
			} else {
				$message = $strings['license-status-unknown'];
			}

$base_url = admin_url( 'themes.php?page=' . $this->theme_slug . '-license' );
			$redirect = add_query_arg( array( 'sl_theme_activation' => 'false', 'message' => urlencode( $message ) ), $base_url );

wp_redirect( $redirect );
			exit();

} else {

$license_data = json_decode( wp_remote_retrieve_body( $response ) );

// If response doesn't include license data, return
			if ( !isset( $license_data->license ) ) {
				$message = $strings['license-status-unknown'];
				return $message;
			}

// We need to update the license status at the same time the message is updated
			if ( $license_data && isset( $license_data->license ) ) {
				update_option( $this->theme_slug . '_license_key_status', 'valid' );
			}

// Get expire date
			$expires = false;
			if ( isset( $license_data->expires ) && 'lifetime' != $license_data->expires ) {
				$expires = date_i18n( get_option( 'date_format' ), strtotime( $license_data->expires, current_time( 'timestamp' ) ) );
				$renew_link = '<a href="' . esc_url( $this->get_renewal_link() ) . '" target="_blank">' . $strings['renew'] . '</a>';
			} elseif ( isset( $license_data->expires ) && 'lifetime' == $license_data->expires ) {
				$expires = 'lifetime';
			}

// Get site counts
			$site_count = $license_data->site_count;
			$license_limit = $license_data->license_limit;

// If unlimited
			if ( 0 == $license_limit ) {
				$license_limit = $strings['unlimited'];
			}

if ( $license_data->license == 'valid' ) {
				$message = $strings['license-key-is-active'] . ' ';
				if ( isset( $expires ) && 'lifetime' != $expires ) {
					$message .= sprintf( $strings['expires%s'], $expires ) . ' ';
				}
				if ( isset( $expires ) && 'lifetime' == $expires ) {
					$message .= $strings['expires-never'];
				}
				if ( $site_count && $license_limit ) {
					$message .= sprintf( $strings['%1$s/%2$-sites'], $site_count, $license_limit );
				}
			} else if ( $license_data->license == 'expired' ) {
				if ( $expires ) {
					$message = sprintf( $strings['license-key-expired-%s'], $expires );
				} else {
					$message = $strings['license-key-expired'];
				}
				if ( $renew_link ) {
					$message .= ' ' . $renew_link;
				}
			} else if ( $license_data->license == 'invalid' ) {
				$message = $strings['license-keys-do-not-match'];
			} else if ( $license_data->license == 'inactive' ) {
				$message = $strings['license-is-inactive'];
			} else if ( $license_data->license == 'disabled' ) {
				$message = $strings['license-key-is-disabled'];
			} else if ( $license_data->license == 'site_inactive' ) {
				// Site is inactive
				$message = $strings['site-is-inactive'];
			} else {
				$message = $strings['license-status-unknown'];
			}

}

return $message;
	}

/**
	 * Disable requests to wp.org repository for this theme.
	 *
	 * @since 1.0.0
	 */
	function disable_wporg_request( $r, $url ) {

// If it's not a theme update request, bail.
		if ( 0 !== strpos( $url, 'https://api.wordpress.org/themes/update-check/1.1/' ) ) {
 			return $r;
 		}

// Decode the JSON response
 		$themes = json_decode( $r['body']['themes'] );

// Remove the active parent and child themes from the check
 		$parent = get_option( 'template' );
 		$child = get_option( 'stylesheet' );
 		unset( $themes->themes->$parent );
 		unset( $themes->themes->$child );

// Encode the updated JSON response
 		$r['body']['themes'] = json_encode( $themes );

return $r;
	}

}

/**
 * This is a means of catching errors from the activation method above and displyaing it to the customer
 */
function edd_sample_theme_admin_notices() {
	if ( isset( $_GET['sl_theme_activation'] ) && ! empty( $_GET['message'] ) ) {

switch( $_GET['sl_theme_activation'] ) {

case 'false':
				$message = urldecode( $_GET['message'] );
				?>
				<div class="error">
					<p><?php echo $message; ?></p>
				</div>
				<?php
				break;

case 'true':
			default:

break;

}
	}
}
add_action( 'admin_notices', 'edd_sample_theme_admin_notices' );

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