Handle order project and refactor api

backend/app/plugins/wiaas/includes/order/class-wiaas-order-project.php

@@ -6,6 +6,9 @@ class Wiaas_Order_Project {
 		add_action('woocommerce_after_register_taxonomy', array(__CLASS__, 'register_order_project_taxonomy'));
 	}
 
+	/**
+	 * Register order project taxonomy
+	 */
 	public static function register_order_project_taxonomy() {
 		$labels = array(
 			'name'              => _x( 'Project', 'taxonomy general name', 'wiaas' ),
@@ -33,6 +36,102 @@ class Wiaas_Order_Project {
 		register_taxonomy( 'shop_order_project', array( 'shop_order' ), $args );
 	}
 
+	/**
+	 * Retrieves available order projects
+	 * @return array List of available order projects
+	 */
+	public static function get_available_order_projects() {
+		$all_terms =  get_terms(array(
+			'taxonomy' => 'shop_order_project',
+			'hide_empty' => false
+		));
+
+		if (is_wp_error($all_terms)) {
+			return array();
+		}
+
+		$available_terms = array_filter($all_terms, function($term) {
+			return self::is_order_project_available($term->term_id);
+		});
+
+		return array_map(function($term) {
+			return array(
+				'id' => $term->term_id,
+				'name' => $term->name
+			);
+		}, $available_terms);
+	}
+
+	/**
+	 * Retrieves order project name
+	 * @param int $order_id
+	 *
+	 * @return string|null Project name if order is assigned to project, null otherwise
+	 */
+	public static function get_project_name_for_order($order_id) {
+		$terms = wp_get_object_terms($order_id, 'shop_order_project');
+		return isset($terms[0]) ? $terms[0]->name : null;
+	}
+
+	/**
+	 * Assigns giver order to given project
+	 * @param int $order_id
+	 * @param int $project_id
+	 */
+	public static function set_project_for_order($order_id, $project_id) {
+		wp_set_object_terms($order_id, $project_id, 'shop_order_project', false);
+	}
+
+	/**
+	 * Adds new order project
+	 * @param string $name Order Project name
+	 * @param bool $is_available Flag indicating is order project available
+	 *
+	 * @return bool True on success, False on failure.
+	 */
+	public static function add_order_project($name, $is_available = true) {
+		$result = wp_create_term($name, 'shop_order_project');
+
+		if (is_wp_error($result)) {
+			return false;
+		}
+
+		// save is term available
+		$id = is_numeric($result) ? $result : $result['term_id'];
+		self::_save_available_field($id, $is_available);
+
+		return true;
+	}
+
+	/**
+	 * @param int|WP_Term $project Order project or order project id
+	 * @param bool $is_available
+	 */
+	public static function set_is_order_project_available($project, $is_available) {
+		$project_id = is_numeric($project) ? $project : $project->term_id;
+		self::_save_available_field($project_id, $is_available);
+	}
+
+	/**
+	 * Retrieves if order project is available
+	 * @param int|WP_Term $project Order project objects or id of order project
+	 *
+	 * @return bool TRUE if available, FALSE if not available
+	 */
+	public static function is_order_project_available($project) {
+		$project_id = is_numeric($project) ? $project : $project->term_id;
+		return get_term_meta($project_id, '_wiaas_is_available', true) === 'yes';
+	}
+
+	// PRIVATE
+
+	/**
+	 * @param int $id Order project id
+	 * @param bool $is_available
+	 */
+	private static function _save_available_field($id, $is_available) {
+		update_term_meta($id, '_wiaas_is_available', $is_available ? 'yes' : 'no');
+	}
 }
 
 Wiaas_Order_Project::init();