@return boolean
	 */
	public static function has_trial_support() {
		return false;
	}

	/**
	 * Checks whether the product can be upgraded to a different product.
	 *
	 * @return boolean
	 */
	public static function is_upgradable() {
		return ! static::has_paid_plan_for_product() && ! static::is_bundle_product();
	}

	/**
	 * Checks whether product is a bundle.
	 *
	 * @return boolean True if product is a bundle. Otherwise, False.
	 */
	public static function is_bundle_product() {
		return false;
	}

	/**
	 * Check whether the product is upgradable
	 * by a product bundle.
	 *
	 * @return boolean|array Bundles list or False if not upgradable by a bundle.
	 */
	public static function is_upgradable_by_bundle() {
		return false;
	}

	/**
	 * In case it's a bundle product,
	 * return all the products it contains.
	 * Empty array by default.
	 *
	 * @return array Product slugs
	 */
	public static function get_supported_products() {
		return array();
	}

	/**
	 * Determine if the product is owned or not
	 * An owned product is defined as a product that is any of the following
	 * - Active
	 * - Has historically been active
	 * - The user has a plan that includes the product
	 * - The user has the standalone plugin for the product installed
	 *
	 * @return boolean
	 */
	public static function is_owned() {
		$historically_active_modules = Jetpack_Options::get_option( 'historically_active_modules', array() );
		$standalone_info             = static::get_standalone_info();
		if ( ( static::is_active() && Jetpack_Options::get_option( 'id' ) ) ||
			$standalone_info['is_standalone_installed'] ||
			in_array( static::$slug, $historically_active_modules, true ) ||
			static::has_any_plan_for_product()
		) {
			return true;
		}

		return false;
	}

	/**
	 * Undocumented function
	 *
	 * @return string
	 */
	public static function get_status() {
		if ( ! static::is_plugin_installed() ) {
			$status = Products::STATUS_PLUGIN_ABSENT;
			if ( static::has_paid_plan_for_product() ) {
				$status = Products::STATUS_PLUGIN_ABSENT_WITH_PLAN;
			}
		} elseif ( static::is_active() ) {
			$status = Products::STATUS_ACTIVE;
			// We only consider missing site & user connection an error when the Product is active.
			if ( static::$requires_site_connection && ! ( new Connection_Manager() )->is_connected() ) {
				// Site has never been connected before
				if ( ! Jetpack_Options::get_option( 'id' ) && ! static::is_owned() ) {
					$status = Products::STATUS_NEEDS_FIRST_SITE_CONNECTION;
				} else {
					$status = Products::STATUS_SITE_CONNECTION_ERROR;
				}
			} elseif ( static::$requires_user_connection && ! ( new Connection_Manager() )->has_connected_owner() ) {
				$status = Products::STATUS_USER_CONNECTION_ERROR;
			} elseif ( static::has_paid_plan_for_product() ) {
				$needs_attention = static::does_module_need_attention();
				if ( ! empty( $needs_attention ) && is_array( $needs_attention ) ) {
					$status = Products::STATUS_NEEDS_ATTENTION__WARNING;
					if ( isset( $needs_attention['type'] ) && 'error' === $needs_attention['type'] ) {
						$status = Products::STATUS_NEEDS_ATTENTION__ERROR;
					}
				}
				if ( static::is_paid_plan_expired() ) {
					$status = Products::STATUS_EXPIRED;
				} elseif ( static::is_paid_plan_expiring() ) {
					$status = Products::STATUS_EXPIRING_SOON;
				}
			} elseif ( static::is_upgradable() ) {
				$status = Products::STATUS_CAN_UPGRADE;
			}
			// Check specifically for inactive modules, which will prevent a product from being active
		} elseif ( static::$module_name && ! static::is_module_active() ) {
			$status = Products::STATUS_MODULE_DISABLED;
			// If there is not a plan associated with the disabled module, encourage a plan first
			// Getting a plan set up should help resolve any connection issues
			// However if the standalone plugin for this product is active, then we will defer to showing errors that prevent the module from being active
			// This is because if a standalone plugin is installed, we expect the product to not show as "inactive" on My Jetpack
			if ( static::$requires_plan || ( ! static::has_any_plan_for_product() && static::$has_standalone_plugin && ! self::is_plugin_active() ) ) {
				$status = static::is_owned() && static::$has_free_offering && ! static::$requires_plan ? Products::STATUS_NEEDS_ACTIVATION : Products::STATUS_NEEDS_PLAN;
			} elseif ( static::$requires_site_connection && ! ( new Connection_Manager() )->is_connected() ) {
				// Site has never been connected before and product is not owned
				if ( ! Jetpack_Options::get_option( 'id' ) && ! static::is_owned() ) {
					$status = Products::STATUS_NEEDS_FIRST_SITE_CONNECTION;
				} else {
					$status = Products::STATUS_SITE_CONNECTION_ERROR;
				}
			} elseif ( static::$requires_user_connection && ! ( new Connection_Manager() )->has_connected_owner() ) {
				$status = Products::STATUS_USER_CONNECTION_ERROR;
			}
		} elseif ( ! static::has_any_plan_for_product() ) {
			$status = static::is_owned() && static::$has_free_offering && ! static::$requires_plan ? Products::STATUS_NEEDS_ACTIVATION : Products::STATUS_NEEDS_PLAN;
		} else {
			$status = Products::STATUS_INACTIVE;
		}
		return $status;
	}

	/**
	 * Checks whether the Product is active
	 *
	 * @return boolean
	 */
	public static function is_active() {
		return static::is_plugin_active() && ( static::has_any_plan_for_product() || ( ! static::$requires_plan && static::$has_free_offering ) );
	}

	/**
	 * Checks whether the plugin is installed
	 *
	 * @return boolean
	 */
	public static function is_plugin_installed() {
		return (bool) static::get_installed_plugin_filename();
	}

	/**
	 * Checks whether the plugin is active
	 *
	 * @return boolean
	 */
	public static function is_plugin_active() {
		return Plugins_Installer::is_plugin_active( static::get_installed_plugin_filename() );
	}

	/**
	 * Checks whether the Jetpack plugin is installed
	 *
	 * @return boolean
	 */
	public static function is_jetpack_plugin_installed() {
		return (bool) static::get_installed_plugin_filename( 'jetpack' );
	}

	/**
	 * Checks whether the Jetpack plugin is active
	 *
	 * @return boolean
	 */
	public static function is_jetpack_plugin_active() {
		return Plugins_Installer::is_plugin_active( static::get_installed_plugin_filename( 'jetpack' ) );
	}

	/**
	 * Checks whether the Jetpack module is active only if a module_name is defined
	 *
	 * @return bool
	 */
	public static function is_module_active() {
		if ( static::$module_name ) {
			return ( new Modules() )->is_active( static::$module_name );
		}
		return true;
	}

	/**
	 * Activates the plugin
	 *
	 * @return null|WP_Error Null on success, WP_Error on invalid file.
	 */
	public static function activate_plugin() {
		return activate_plugin( static::get_installed_plugin_filename() );
	}

	/**
	 * Perform the top level activation routines, which is installing and activating the required plugin
	 *
	 * @return bool|WP_Error
	 */
	private static function do_activation() {
		if ( static::is_active() ) {
			return true;
		}

		// Default to installing the standalone plugin for the product
		if ( ! self::is_plugin_installed() ) {
			$installed = Plugins_Installer::install_plugin( static::get_plugin_slug() );
			if ( is_wp_error( $installed ) ) {
				return $installed;
			}
		}

		if ( ! current_user_can( 'activate_plugins' ) ) {
			return new WP_Error( 'not_allowed', __( 'You are not allowed to activate plugins on this site.', 'jetpack-my-jetpack' ) );
		}

		$result = static::activate_plugin();
		if ( is_wp_error( $result ) ) {
			return $result;
		}

		return true;
	}

	/**
	 * Activates the product by installing and activating its plugin
	 *
	 * @return boolean|WP_Error
	 */
	final public static function activate() {

		$result = self::do_activation();

		$result = static::do_product_specific_activation( $result );

		$product_slug = static::$slug;

		/**
		 * Fires after My Jetpack activates a product and filters the result
		 * Use this filter to run additional routines for a product activation on stand-alone plugins
		 *
		 * @param bool|WP_Error $result The result of the previous steps of activation.
		 */
		$result = apply_filters( "my_jetpack_{$product_slug}_activation", $result );

		return $result;
	}

	/**
	 * Override this method to perform product specific activation routines.
	 *
	 * @param bool|WP_Error $current_result Is the result of the top level activation actions. You probably won't do anything if it is an WP_Error.
	 * @return bool|WP_Error
	 */
	public static function do_product_specific_activation( $current_result ) {
		return $current_result;
	}

	/**
	 * Deactivate the product
	 *
	 * @return boolean
	 */
	public static function deactivate() {
		deactivate_plugins( static::get_installed_plugin_filename() );
		return true;
	}

	/**
	 * Returns filtered Jetpack plugin actions links.
	 *
	 * @param array $actions - Jetpack plugin action links.
	 * @return array           Filtered Jetpack plugin actions links.
	 */
	public static function get_plugin_actions_links( $actions ) {
		// My Jetpack action link.
		$my_jetpack_home_link = array(
			'jetpack-home' => sprintf(
				'<a href="%1$s" title="%3$s">%2$s</a>',
				admin_url( 'admin.php?page=my-jetpack' ),
				__( 'My Jetpack', 'jetpack-my-jetpack' ),
				__( 'My Jetpack dashboard', 'jetpack-my-jetpack' )
			),
		);

		// Otherwise, add it to the beginning of the array.
		return array_merge( $my_jetpack_home_link, $actions );
	}

	/**
	 * Filter the action links for the plugins specified.
	 *
	 * @param string|string[] $filenames The plugin filename(s) to filter the action links for.
	 */
	private static function filter_action_links( $filenames ) {
		foreach ( $filenames as $filename ) {
			$hook     = 'plugin_action_links_' . $filename;
			$callback = array( static::class, 'get_plugin_actions_links' );
			if ( ! has_filter( $hook, $callback ) ) {
				add_filter( $hook, $callback, 20, 2 );
			}
		}
	}

	/**
	 * Extend the plugin action links.
	 */
	public static function extend_plugin_action_links() {
		$filenames = static::get_plugin_filename();
		if ( ! is_array( $filenames ) ) {
			$filenames = array( $filenames );
		}

		self::filter_action_links( $filenames );
	}

	/**
	 * Extend the Jetpack plugin action links.
	 */
	public static function extend_core_plugin_action_links() {
		$filenames = self::JETPACK_PLUGIN_FILENAME;

		self::filter_action_links( $filenames );
	}

	/**
	 * Install and activate the standalone plugin in the case it's missing.
	 *
	 * @return boolean|WP_Error
	 */
	public static function install_and_activate_standalone() {
		/**
		 * Check for the presence of the standalone plugin, ignoring Jetpack presence.
		 *
		 * If the standalone plugin is not installed and the user can install plugins, proceed with the installation.
		 */
		if ( ! static::is_plugin_installed() ) {
			/**
			 * Check for permissions
			 */
			if ( ! current_user_can( 'install_plugins' ) ) {
				return new WP_Error( 'not_allowed', __( 'You are not allowed to install plugins on this site.', 'jetpack-my-jetpack' ) );
			}

			/**
			 * Install the plugin
			 */
			$installed = Plugins_Installer::install_plugin( static::get_plugin_slug() );
			if ( is_wp_error( $installed ) ) {
				return $installed;
			}
		}

		/**
		 * Activate the installed plugin
		 */
		$result = static::activate_plugin();

		if ( is_wp_error( $result ) ) {
			return $result;
		}

		return true;
	}

	/**
	 * Determines whether the module/plugin/product needs the users attention.
	 * Typically due to some sort of error where user troubleshooting is needed.
	 *
	 * @return boolean
	 */
	public static function does_module_need_attention() {
		return false;
	}
}