// This file is part of pa11y-dashboard.
//
// pa11y-dashboard is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// pa11y-dashboard is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with pa11y-dashboard.  If not, see <http://www.gnu.org/licenses/>.

'use strict';

var moment = require('moment');

module.exports = route;

// Route definition
function route(app) {

	function getTaskAndResult(req, res, next) {
		app.webservice.task(req.params.id).get({}, function(err, task) {
			if (err) {
				return next('route');
			}
			app.webservice
				.task(req.params.id)
				.result(req.params.rid)
				.get({full: true}, function(err, result) {
					if (err) {
						return next('route');
					}
					res.locals.task = task;
					res.locals.result = result;
					next();
				});
		});
	}

	function getDownloadFileName(task, result, extension) {
		return [
			'pa11y',
			'--',
			task.url
				.replace(/^https?:\/\//i, '')
				.replace(/\/$/, '')
				.replace(/[^a-z0-9\.\-\_]+/gi, '-'),
			'--',
			task.standard.toLowerCase(),
			'--',
			moment(result.date).format('YYYY-MM-DD'),
			'.',
			extension
		].join('');
	}

	app.express.get('/:id/:rid.csv', getTaskAndResult, function(req, res) {
		var task = res.locals.task;
		var result = res.locals.result;
		var rows = ['"code","message","type"'];
		result.results.forEach(function(msg) {
			rows.push([
				JSON.stringify(msg.code),
				JSON.stringify(msg.message),
				JSON.stringify(msg.type)
			].join(','));
		});
		res.attachment(getDownloadFileName(task, result, 'csv'));
		res.send(rows.join('\n'));
	});

	app.express.get('/:id/:rid.json', getTaskAndResult, function(req, res) {
		var task = res.locals.task;
		var result = res.locals.result;
		res.attachment(getDownloadFileName(task, result, 'json'));
		delete task.id;
		delete result.id;
		result.task = task;
		res.send(result);
	});

}