New Abstract class for defining custom endpoint types

includes/core/classes/endpoints/class-endpoint-type.php

@@ -0,0 +1,90 @@
+<?php
+/**
+ * Abstract class for defining custom endpoint types in GatherPress.
+ *
+ * This file contains the `Endpoint_Type` abstract class, which serves as a base
+ * class for custom endpoint types (e.g., redirects, templates) in GatherPress.
+ * Subclasses are expected to define specific behavior for different types of endpoints.
+ *
+ * @package GatherPress\Core\Endpoints
+ * @since 1.0.0
+ */
+
+namespace GatherPress\Core\Endpoints;
+
+// Exit if accessed directly.
+defined( 'ABSPATH' ) || exit; // @codeCoverageIgnore
+
+/**
+ * Abstract class for defining custom endpoint behavior.
+ *
+ * The `Endpoint_Type` class is an abstract base class that provides the foundational
+ * structure for custom endpoint types in GatherPress. It defines the core properties
+ * of an endpoint, such as the `slug` and the `callback`, and requires subclasses
+ * to implement their own specific behavior.
+ *
+ * This class is designed to be extended by specific endpoint types, such as:
+ * - `Endpoint_Redirect`: Handles URL redirection for endpoints.
+ * - `Endpoint_Template`: Handles loading custom templates for endpoints.
+ *
+ * @since 1.0.0
+ * @package GatherPress\Core
+ * @subpackage Endpoints
+ */
+abstract class Endpoint_Type {
+
+	/**
+	 * The publicly visible name (slug) of the endpoint.
+	 *
+	 * This property stores the slug used in the URL to identify the endpoint. It is
+	 * what differentiates one type of endpoint from another in the URL structure (e.g.,
+	 * `event/my-sample-event/googlecalendar` or `event/my-sample-event/ical`).
+	 *
+	 * @since 1.0.0
+	 *
+	 * @var string
+	 */
+	public $slug;
+
+	/**
+	 * Callback function to handle the endpoint behavior.
+	 *
+	 * This property holds a callable (callback) that is executed when the endpoint is
+	 * matched. The specific behavior of the endpoint (e.g., redirecting or rendering a
+	 * template) is handled by this callback, which is passed when the endpoint is created.
+	 *
+	 * @since 1.0.0
+	 *
+	 * @var callable
+	 */
+	protected $callback;
+
+	/**
+	 * Class constructor.
+	 *
+	 * Initializes the `Endpoint_Type` object by setting the publicly visible slug for
+	 * the endpoint and the callback function that defines the endpoint's behavior.
+	 * Subclasses will use this constructor to set up specific types of endpoints.
+	 *
+	 * @since 1.0.0
+	 *
+	 * @param string   $slug     The slug used to identify the endpoint in the URL.
+	 * @param callable $callback The callback function that handles the endpoint logic.
+	 */
+	public function __construct(
+		string $slug,
+		callable $callback
+	) {
+		$this->slug     = $slug;
+		$this->callback = $callback;
+	}
+
+	/**
+	 * Activate Endpoint_Type by hooking into relevant parts.
+	 *
+	 * @since 1.0.0
+	 *
+	 * @return void
+	 */
+	abstract public function activate(): void;
+}