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wp-content/plugins/gravitysmtp/includes/feature-flags/class-feature-flag-manager.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Gravity_Forms\Gravity_SMTP\Feature_Flags;
+
+use Gravity_Forms\Gravity_SMTP\Gravity_SMTP;
+
+class Feature_Flag_Manager {
+
+	protected $repo;
+
+	public function __construct( Feature_Flag_Repository $repo ) {
+		$this->repo = $repo;
+	}
+
+	public function __call( $name, $arguments ) {
+		if ( ! method_exists( $this->repo, $name ) ) {
+			return null;
+		}
+
+		return call_user_func_array( array( $this->repo, $name ), $arguments );
+	}
+
+	public static function __callStatic( $name, $arguments ) {
+		$self = Gravity_SMTP::$container->get( Feature_Flags_Service_Provider::FEATURE_FLAG_MANAGER );
+		if ( ! method_exists( $self->repo, $name ) ) {
+			return null;
+		}
+
+		return call_user_func_array( array( $self->repo, $name ), $arguments );
+	}
+
+}

wp-content/plugins/gravitysmtp/includes/feature-flags/class-feature-flag-repository.php

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+<?php
+
+namespace Gravity_Forms\Gravity_SMTP\Feature_Flags;
+
+use Gravity_Forms\Gravity_SMTP\Gravity_SMTP;
+
+class Feature_Flag_Repository {
+
+	const FILTER_ALL_FEATURE_FLAGS   = 'gravitysmtp_feature_flags';
+	const FILTER_SINGLE_FEATURE_FLAG = 'gravitysmtp_feature_flag';
+
+	public function flags() {
+		return apply_filters( self::FILTER_ALL_FEATURE_FLAGS, array() );
+	}
+
+	public function add( $flag_slug, $flag_label ) {
+		add_filter( self::FILTER_ALL_FEATURE_FLAGS, function( $flags ) use ( $flag_slug, $flag_label ) {
+			$flags[ $flag_slug ] = $flag_label;
+
+			return $flags;
+		} );
+	}
+
+	public function is_enabled( $flag_slug ) {
+		return apply_filters( self::FILTER_SINGLE_FEATURE_FLAG, false, $flag_slug );
+	}
+
+	public function enable_flag( $flag_slug, $priority = PHP_INT_MAX ) {
+		add_filter( self::FILTER_SINGLE_FEATURE_FLAG, function ( $is_enabled, $checked_flag ) use ( $flag_slug ) {
+			if ( $checked_flag === $flag_slug ) {
+				return true;
+			}
+
+			return $is_enabled;
+		}, $priority, 2 );
+	}
+
+	public function disable_flag( $flag_slug, $priority = PHP_INT_MAX ) {
+		add_filter( self::FILTER_SINGLE_FEATURE_FLAG, function ( $is_enabled, $checked_flag ) use ( $flag_slug ) {
+			if ( $checked_flag === $flag_slug ) {
+				return false;
+			}
+
+			return $is_enabled;
+		}, $priority, 2 );
+	}
+
+	public function enabled_flags() {
+		$all_flags = $this->flags();
+		$self      = $this;
+
+		return array_filter( $all_flags, function ( $flag_slug ) use ( $self ) {
+			return $this->is_enabled( $flag_slug );
+		}, ARRAY_FILTER_USE_KEY );
+	}
+
+	public function flags_by_status() {
+		$all_flags = $this->flags();
+		$response  = array();
+
+		foreach ( $all_flags as $flag_slug => $label ) {
+			$response[ $flag_slug ] = $this->is_enabled( $flag_slug );
+		}
+
+		return $response;
+	}
+}

wp-content/plugins/gravitysmtp/includes/feature-flags/class-feature-flags-service-provider.php

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+<?php
+
+namespace Gravity_Forms\Gravity_SMTP\Feature_Flags;
+
+use Gravity_Forms\Gravity_SMTP\Feature_Flags\Config\Feature_Flags_Config;
+use Gravity_Forms\Gravity_Tools\Providers\Config_Service_Provider;
+use Gravity_Forms\Gravity_Tools\Service_Container;
+
+class Feature_Flags_Service_Provider extends Config_Service_Provider {
+
+	const FEATURE_FLAG_REPOSITORY = 'feature_flag_repository';
+	const FEATURE_FLAG_MANAGER = 'feature_flag_manager';
+
+	const FEATURE_FLAGS_CONFIG = 'feature_flags_config';
+
+	protected $configs = array(
+		self::FEATURE_FLAGS_CONFIG => Feature_Flags_Config::class,
+	);
+
+	public function register( Service_Container $container ) {
+		parent::register( $container );
+
+		$container->add( self::FEATURE_FLAG_REPOSITORY, function () {
+			return new Feature_Flag_Repository();
+		} );
+
+		$container->add( self::FEATURE_FLAG_MANAGER, function () use ( $container ) {
+			return new Feature_Flag_Manager( $container->get( self::FEATURE_FLAG_REPOSITORY ) );
+		} );
+	}
+
+	public function init( \Gravity_Forms\Gravity_Tools\Service_Container $container ) {
+
+	}
+
+}

wp-content/plugins/gravitysmtp/includes/feature-flags/config/class-feature-flags-config.php

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+<?php
+
+namespace Gravity_Forms\Gravity_SMTP\Feature_Flags\Config;
+
+use Gravity_Forms\Gravity_SMTP\Feature_Flags\Feature_Flag_Manager;
+use Gravity_Forms\Gravity_Tools\Config;
+
+class Feature_Flags_Config extends Config {
+
+	protected $script_to_localize = 'gravitysmtp_scripts_admin';
+	protected $name               = 'gravitysmtp_admin_config';
+
+	public function should_enqueue() {
+		return is_admin();
+	}
+
+	public function data() {
+		return array(
+			'common' => array(
+				'feature_flags' => array(
+					'data' => array(
+						'all'      => Feature_Flag_Manager::flags(),
+						'enabled'  => Feature_Flag_Manager::enabled_flags(),
+						'statuses' => Feature_Flag_Manager::flags_by_status(),
+					),
+				),
+			),
+		);
+	}
+
+}