Add the governance plugin (#4907)

* Add the VIP Governance plugin to the integrations

* Update the config used for seeing if the governance plugin is loaded or not

* Add a test for the new vip-governance integration

* Leave only the single test that actually tests some functionality

* Add a test for the Block Data API as well

* Shift the import lines to be in the right order

* Add in a test to see if the isloaded method works correctly for both the integrations

* Add a code coverage ignore block to the registrations

* Remove the extra false loaded check

* Switch the isLoad check to not define any constant

* Initial rollout safeguard

integrations/vip-governance.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Integration: VIP Governance.
+ *
+ * @package Automattic\VIP\Integrations
+ */
+
+namespace Automattic\VIP\Integrations;
+
+/**
+ * Loads VIP Governance.
+ *
+ * @private
+ */
+class VipGovernanceIntegration extends Integration {
+
+	/**
+	 * The version of the VIP Governance plugin to load, that's set to the latest version.
+	 * This should be higher than the lowestVersion set in "vip-governance" config (https://github.com/Automattic/vip-go-mu-plugins-ext/blob/trunk/config.json)
+	 *
+	 * @var string
+	 */
+	protected string $version = '1.0';
+
+	/**
+	 * Returns `true` if `VIP Governance` is already available e.g. via customer code. We will use
+	 * this function to prevent activating of integration from platform side.
+	 */
+	public function is_loaded(): bool {
+		return defined( 'VIP_GOVERNANCE_LOADED' );
+	}
+
+	/**
+	 * Applies hooks to load VIP Governance plugin.
+	 *
+	 * @private
+	 */
+	public function load(): void {
+		// Wait until plugins_loaded to give precedence to the plugin in the customer repo.
+		add_action( 'plugins_loaded', function () {
+			// Return if the integration is already loaded.
+			//
+			// In activate() method we do make sure to not activate the integration if its already loaded
+			// but still adding it here as a safety measure i.e. if load() is called directly.
+			if ( $this->is_loaded() ) {
+				return;
+			}
+
+			// Load the version of the plugin that should be set to the latest version, otherwise if it's not found deactivate the integration.
+			$load_path = WPMU_PLUGIN_DIR . '/vip-integrations/vip-governance-' . $this->version . '/vip-governance.php';
+			if ( file_exists( $load_path ) ) {
+				require_once $load_path;
+			} else {
+				$this->is_active = false;
+			}
+		} );
+	}
+
+	/**
+	 * Configure `VIP Governance` for VIP Platform.
+	 */
+	public function configure(): void {}
+}

tests/integrations/test-vip-block-data-api.php

@@ -0,0 +1,30 @@
+<?php
+/**
+ * Test: Block Data API Integration.
+ *
+ * @package Automattic\VIP\Integrations
+ */
+
+namespace Automattic\VIP\Integrations;
+
+use WP_UnitTestCase;
+
+// phpcs:disable Squiz.Commenting.ClassComment.Missing, Squiz.Commenting.FunctionComment.Missing, Squiz.Commenting.VariableComment.Missing
+
+class Block_Data_API_Integration_Test extends WP_UnitTestCase {
+	private string $slug = 'block-data-api';
+
+	public function test__load_call_returns_inactive_because_no_block_data_api_plugin_loaded(): void {
+		$block_data_api_integration = new BlockDataApiIntegration( $this->slug );
+
+		$block_data_api_integration->load();
+
+		$this->assertFalse( $block_data_api_integration->is_active() );
+	}
+
+	public function test__if_is_loaded_gives_back_true_when_loaded(): void {
+		$block_data_api_integration = new BlockDataApiIntegration( $this->slug );
+
+		$this->assertFalse( $block_data_api_integration->is_loaded() );
+	}
+}

tests/integrations/test-vip-governance.php

@@ -0,0 +1,30 @@
+<?php
+/**
+ * Test: VIP Governance Integration.
+ *
+ * @package Automattic\VIP\Integrations
+ */
+
+namespace Automattic\VIP\Integrations;
+
+use WP_UnitTestCase;
+
+// phpcs:disable Squiz.Commenting.ClassComment.Missing, Squiz.Commenting.FunctionComment.Missing, Squiz.Commenting.VariableComment.Missing
+
+class VIP_Governance_Integration_Test extends WP_UnitTestCase {
+	private string $slug = 'vip-governance';
+
+	public function test__load_call_returns_inactive_because_no_governance_plugin_loaded(): void {
+		$vip_governance_integration = new VipGovernanceIntegration( $this->slug );
+
+		$vip_governance_integration->load();
+
+		$this->assertFalse( $vip_governance_integration->is_active() );
+	}
+
+	public function test__if_is_loaded_gives_back_true_when_loaded(): void {
+		$vip_governance_integration = new VipGovernanceIntegration( $this->slug );
+
+		$this->assertFalse( $vip_governance_integration->is_loaded() );
+	}
+}

vip-integrations.php

@@ -14,6 +14,8 @@
 
 defined( 'ABSPATH' ) || die();
 
+// @codeCoverageIgnoreStart - the actual code here is tested individually in the unit tests.
+
 require_once __DIR__ . '/integrations/integration.php';
 require_once __DIR__ . '/integrations/integrations.php';
 require_once __DIR__ . '/integrations/enums.php';
@@ -25,6 +27,14 @@
 IntegrationsSingleton::instance()->register( new BlockDataApiIntegration( 'block-data-api' ) );
 IntegrationsSingleton::instance()->register( new ParselyIntegration( 'parsely' ) );
 
+// ToDo: Remove this after the initial deployment of the VIP Governance integration.
+if ( file_exists( __DIR__ . '/integrations/vip-governance.php' ) ) {
+	require_once __DIR__ . '/integrations/vip-governance.php';
+	IntegrationsSingleton::instance()->register( new VipGovernanceIntegration( 'vip-governance' ) );
+}
+
+// @codeCoverageIgnoreEnd
+
 /**
  * Activates an integration with an optional configuration value.
  *