<?php
/**
 * ConvertKit WordPress Cron functions.
 *
 * @package ConvertKit
 * @author ConvertKit
 */

/**
 * Refresh the OAuth access token, triggered by WordPress' Cron.
 *
 * @since   2.8.3
 */
function convertkit_refresh_token() {

	// Get Settings and Log classes.
	$settings = new ConvertKit_Settings();

	// Bail if no existing access and refresh token exists.
	if ( ! $settings->has_access_token() ) {
		return;
	}
	if ( ! $settings->has_refresh_token() ) {
		return;
	}

	// Initialize the API.
	$api = new ConvertKit_API_V4(
		CONVERTKIT_OAUTH_CLIENT_ID,
		CONVERTKIT_OAUTH_CLIENT_REDIRECT_URI,
		$settings->get_access_token(),
		$settings->get_refresh_token(),
		$settings->debug_enabled(),
		'cron_refresh_token'
	);

	// Refresh the token.
	$result = $api->refresh_token();

	// If an error occurred, don't save the new tokens.
	// Logging is handled by the ConvertKit_API_V4 class.
	if ( is_wp_error( $result ) ) {
		return;
	}

	$settings->save(
		array(
			'access_token'  => $result['access_token'],
			'refresh_token' => $result['refresh_token'],
			'token_expires' => ( time() + $result['expires_in'] ),
		)
	);

}

// Register action to run above function; this action is created by WordPress' wp_schedule_event() function
// in update_credentials() in the ConvertKit_Settings class.
add_action( 'convertkit_refresh_token', 'convertkit_refresh_token' );

/**
 * Refresh the Posts Resource cache, triggered by WordPress' Cron.
 *
 * @since   1.9.7.4
 */
function convertkit_resource_refresh_posts() {

	// Get Settings and Log classes.
	$settings = new ConvertKit_Settings();
	$log      = new ConvertKit_Log( CONVERTKIT_PLUGIN_PATH );

	// Bail if no access and refresh token exists.
	if ( ! $settings->has_access_and_refresh_token() ) {
		if ( $settings->debug_enabled() ) {
			$log->add( 'CRON: convertkit_resource_refresh_posts(): No access and refresh token exists.' );
		}

		return;
	}

	// If debug logging is enabled, write to it now.
	if ( $settings->debug_enabled() ) {
		$log->add( 'CRON: convertkit_resource_refresh_posts(): Started' );
	}

	// Refresh Posts Resource.
	$posts  = new ConvertKit_Resource_Posts( 'cron' );
	$result = $posts->refresh();

	// Bail if an error occurred.
	if ( is_wp_error( $result ) ) {
		// Delete credentials if the error is a 401.
		convertkit_maybe_delete_credentials( $result, CONVERTKIT_OAUTH_CLIENT_ID );

		$log->add( 'CRON: convertkit_resource_refresh_posts(): Error: ' . $result->get_error_message() );
		return;
	}

	// If debug logging is enabled, write to it now.
	if ( $settings->debug_enabled() ) {
		$log->add( 'CRON: convertkit_resource_refresh_posts(): Success: ' . count( $result ) . ' broadcasts fetched from API and cached.' );
		$log->add( 'CRON: convertkit_resource_refresh_posts(): Finished' );
	}

}

// Register action to run above function; this action is created by WordPress' wp_schedule_event() function
// in the ConvertKit_Resource_Posts class.
add_action( 'convertkit_resource_refresh_posts', 'convertkit_resource_refresh_posts' );