wp-workday-api.php

<?php
/**
 * Plugin Name: WP Workday API
 * Plugin URI:  https://example.com/wp-workday-api
 * Description: A WordPress plugin that provides an API wrapper for Workday.
 * Version:     1.0.0
 * Author:      Your Name
 * Author URI:  https://example.com
 * License:     GPL2
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: wp-workday-api
 * Domain Path: /languages
 */

// Exit if accessed directly.
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'WP_Workday_API' ) ) :

	/**
	 * Main WP_Workday_API Class.
	 *
	 * @since 1.0.0
	 */
	final class WP_Workday_API {

		/**
		 * Version of the plugin.
		 *
		 * @var string
		 */
		public $version = '1.0.0';

		/**
		 * Instance of this class.
		 *
		 * @var object
		 */
		protected static $instance = null;

		/**
		 * The Workday API base URL.
		 *
		 * @var string
		 */
		public $api_base_url = 'https://wd3-impl-services1.workday.com/ccx/service/your_tenant/Human_Resources/v34.0'; // Replace with your Workday API endpoint

		/**
		 * Workday API credentials.
		 *
		 * @var array
		 */
		private $credentials;

		/**
		 * Initialize the plugin public actions.
		 */
		private function __construct() {
			// Load plugin text domain.
			add_action( 'init', array( $this, 'load_plugin_textdomain' ) );

			// Set the Workday API credentials.
			$this->credentials = array(
				'username' => 'YOUR_USERNAME', // Replace with your Workday username
				'password' => 'YOUR_PASSWORD', // Replace with your Workday password
				'client_id'     => 'YOUR_CLIENT_ID', // Replace with your Workday client ID
				'client_secret' => 'YOUR_CLIENT_SECRET', // Replace with your Workday client secret
				'tenant_id'  => 'YOUR_TENANT_ID', // Replace with your Workday tenant ID
			);

			// Register any necessary hooks or actions.
		}

		/**
		 * Return an instance of this class.
		 *
		 * @return object A single instance of this class.
		 */
		public static function get_instance() {
			// If the single instance hasn't been set, set it now.
			if ( null === self::$instance ) {
				self::$instance = new self();
			}

			return self::$instance;
		}

		/**
		 * Load the plugin text domain for translation.
		 */
		public function load_plugin_textdomain() {
			load_plugin_textdomain( 'wp-workday-api', false, dirname( plugin_basename( __FILE__ ) ) . '/languages/' );
		}

		/**
		 * Magic getter for our object. Allows getting but not setting.
		 *
		 * @param string $field
		 * @return mixed
		 */
		public function __get( $field ) {
			return $this->$field;
		}

		/**
		 * Make a request to the Workday API.
		 *
		 * @param string $endpoint The API endpoint.
		 * @param string $method The HTTP method (GET, POST, PUT, DELETE).
		 * @param array $params The request parameters.
		 * @return array The API response.
		 */
		public function make_request( $endpoint, $method = 'GET', $params = array() ) {
			$url = $this->api_base_url . $endpoint;

			$args = array(
				'method'  => $method,
				'headers' => array(
					'Authorization' => 'Basic ' . base64_encode( $this->credentials['client_id'] . ':' . $this->credentials['client_secret'] ),
					'Content-Type'  => 'application/json',
				),
			);

			if ( 'GET' === $method ) {
				$url = add_query_arg( $params, $url );
			} else {
				$args['body'] = json_encode( $params );
			}

			$response = wp_remote_request( $url, $args );

			if ( is_wp_error( $response ) ) {
				// Handle WP_Error.
				error_log( 'Workday API Error: ' . $response->get_error_message() );
				return $response;
			}

			$status_code = wp_remote_retrieve_response_code( $response );
			if ( $status_code < 200 || $status_code >= 300 ) {
				// Handle API errors.
				$error_message = wp_remote_retrieve_body( $response );
				error_log( 'Workday API Error (' . $status_code . '): ' . $error_message );
				return new WP_Error( 'workday_api_error', $error_message, array( 'status_code' => $status_code ) );
			}

			return json_decode( wp_remote_retrieve_body( $response ) );
		}

		/**
		 * Get a list of workers.
		 *
		 * @param array $params Optional parameters (e.g., page, count).
		 * @return array The list of workers.
		 */
		public function get_workers( $params = array() ) {
			return $this->make_request( '/Workers', 'GET', $params );
		}

		/**
		 * Get a single worker by ID.
		 *
		 * @param string $worker_id The ID of the worker.
		 * @return array The worker data.
		 */
		public function get_worker( $worker_id ) {
			return $this->make_request( '/Workers/' . $worker_id );
		}

		// Add other helper methods for specific Workday API functionalities, e.g.,:
		// public function get_organizations() { ... }
		// public function get_positions() { ... }
		// public function submit_job_application( $data ) { ... }
		// ... and so on

	}

endif;

/**
 * Returns the main instance of WP_Workday_API.
 *
 * @return WP_Workday_API The main instance.
 */
function WP_Workday_API() {
	return WP_Workday_API::get_instance();
}

// Get WP_Workday_API Running.
WP_Workday_API();