'use strict';

const helpers = module.exports;
const middleware = require('../middleware');
const controllerHelpers = require('../controllers/helpers');

function _handleArgs(middleware, middlewares, controller) {
	if (typeof middlewares === 'function') {
		if (controller) {
			middlewares = [middlewares];
		} else {
			controller = middlewares;
			middlewares = [];
		}
	}

	middlewares = [
		middleware.maintenanceMode,
		middleware.registrationComplete,
		middleware.authenticateRequest,
		middleware.pluginHooks,
		...middlewares,
	];

	return { middlewares, controller };
}

helpers.setupPageRoute = function (router, name, middleware, middlewares, controller) {
	({ middlewares, controller } = _handleArgs(middleware, middlewares, controller));
	middlewares.push(middleware.pageView);

	router.get(
		name,
		middleware.busyCheck,
		middleware.applyCSRF,
		middlewares,
		middleware.buildHeader,
		helpers.tryRoute(controller)
	);
	router.get(`/api${name}`, middlewares, helpers.tryRoute(controller));
};

helpers.setupAdminPageRoute = function (router, name, middleware, middlewares, controller) {
	router.get(name, middleware.admin.buildHeader, middlewares, helpers.tryRoute(controller));
	router.get(`/api${name}`, middlewares, helpers.tryRoute(controller));
};

helpers.setupApiRoute = function (router, verb, name, middlewares, controller) {
	({ middlewares, controller } = _handleArgs(middleware, middlewares, controller));

	router[verb](name, middlewares, helpers.tryRoute(controller, (err, res) => {
		controllerHelpers.formatApiResponse(400, res, err);
	}));
};

helpers.tryRoute = function (controller, handler) {
	// `handler` is optional
	if (controller && controller.constructor && controller.constructor.name === 'AsyncFunction') {
		return async function (req, res, next) {
			try {
				await controller(req, res, next);
			} catch (err) {
				if (handler) {
					return handler(err, res);
				}

				next(err);
			}
		};
	}
	return controller;
};