'use strict';

/**
 * Module dependencies
 */
import rndstr from 'rndstr';
import AuthSess from '../../models/auth-session';
import Userkey from '../../models/userkey';

/**
 * @swagger
 * /auth/accept:
 *   post:
 *     summary: Accept a session
 *     parameters:
 *       - $ref: "#/parameters/ShouldSecureKey"
 *       - 
 *         name: token
 *         description: Session Token
 *         in: formData
 *         required: true
 *         type: string
 *     responses:
 *       204:
 *         description: OK
 *       
 *       default:
 *         description: Failed
 *         schema:
 *           $ref: "#/definitions/Error"
 */

/**
 * Accept
 *
 * @param {Object} params
 * @param {Object} user
 * @return {Promise<object>}
 */
module.exports = (params, user) =>
	new Promise(async (res, rej) =>
{
	// Get 'token' parameter
	const token = params.token;
	if (token == null) {
		return rej('token is required');
	}

	// Fetch token
	const session = await AuthSess
		.findOne({ token: token });

	if (session === null) {
		return rej('session not found');
	}

	// Generate userkey
	const key = rndstr('a-zA-Z0-9', 32);

	// Fetch exist userkey
	const exist = await Userkey.findOne({
		app_id: session.app_id,
		user_id: user._id,
	});

	if (exist === null) {
		// Insert userkey doc
		await Userkey.insert({
			created_at: new Date(),
			app_id: session.app_id,
			user_id: user._id,
			key: key
		});
	}

	// Update session
	await AuthSess.updateOne({
		_id: session._id
	}, {
		$set: {
			user_id: user._id
		}
	});

	// Response
	res();
});