'use strict';

const Joi = require('joi');
const ObjectID = require('mongodb').ObjectID;
const tools = require('../../tools');
const roles = require('../../roles');
const { sessSchema, sessIPSchema } = require('../../schemas');

// Custom 2FA needs to be enabled if your website handles its own 2FA and you want to disable
// master password usage for IMAP/POP/SMTP clients

module.exports = (db, server, userHandler) => {
    /**
     * @api {put} /users/:user/2fa/custom Enable custom 2FA for a user
     * @apiName EnableCustom2FA
     * @apiGroup TwoFactorAuth
     * @apiDescription This method disables account password for IMAP/POP3/SMTP
     * @apiHeader {String} X-Access-Token Optional access token if authentication is enabled
     * @apiHeaderExample {json} Header-Example:
     * {
     *   "X-Access-Token": "59fc66a03e54454869460e45"
     * }
     *
     * @apiParam {String} user ID of the User
     * @apiParam {String} [sess] Session identifier for the logs
     * @apiParam {String} [ip] IP address for the logs
     *
     * @apiSuccess {Boolean} success Indicates successful response
     *
     * @apiError error Description of the error
     *
     * @apiExample {curl} Example usage:
     *     curl -i -XPUT http://localhost:8080/users/59fc66a03e54454869460e45/2fa/custom \
     *     -H 'Content-type: application/json' \
     *     -d '{
     *       "ip": "127.0.0.1"
     *     }'
     *
     * @apiSuccessExample {json} Success-Response:
     *     HTTP/1.1 200 OK
     *     {
     *       "success": true
     *     }
     *
     * @apiErrorExample {json} Error-Response:
     *     HTTP/1.1 200 OK
     *     {
     *       "error": "This username does not exist"
     *       "code": "UserNotFound"
     *     }
     */
    server.put(
        '/users/:user/2fa/custom',
        tools.asyncifyJson(async (req, res, next) => {
            res.charSet('utf-8');

            const schema = Joi.object().keys({
                user: Joi.string().hex().lowercase().length(24).required(),
                sess: sessSchema,
                ip: sessIPSchema
            });

            const result = schema.validate(req.params, {
                abortEarly: false,
                convert: true
            });

            if (result.error) {
                res.status(400);
                res.json({
                    error: result.error.message,
                    code: 'InputValidationError',
                    details: tools.validationErrors(result)
                });
                return next();
            }

            // permissions check
            if (req.user && req.user === result.value.user) {
                req.validate(roles.can(req.role).updateOwn('users'));
            } else {
                req.validate(roles.can(req.role).updateAny('users'));
            }

            let user = new ObjectID(result.value.user);
            let userHandlerResponse = await userHandler.enableCustom2fa(user, result.value);

            res.json({
                success: userHandlerResponse.success
            });

            return next();
        })
    );

    /**
     * @api {delete} /users/:user/2fa/custom Disable custom 2FA for a user
     * @apiName DisableCustom2FA
     * @apiGroup TwoFactorAuth
     * @apiDescription This method disables custom 2FA. If it was the only 2FA set up, then account password for IMAP/POP3/SMTP gets enabled again
     * @apiHeader {String} X-Access-Token Optional access token if authentication is enabled
     * @apiHeaderExample {json} Header-Example:
     * {
     *   "X-Access-Token": "59fc66a03e54454869460e45"
     * }
     *
     * @apiParam {String} user ID of the User
     * @apiParam {String} [sess] Session identifier for the logs
     * @apiParam {String} [ip] IP address for the logs
     *
     * @apiSuccess {Boolean} success Indicates successful response
     *
     * @apiError error Description of the error
     *
     * @apiExample {curl} Example usage:
     *     curl -i -XDELETE http://localhost:8080/users/59fc66a03e54454869460e45/2fa/custom \
     *     -H 'Content-type: application/json' \
     *     -d '{
     *       "ip": "127.0.0.1"
     *     }'
     *
     * @apiSuccessExample {json} Success-Response:
     *     HTTP/1.1 200 OK
     *     {
     *       "success": true
     *     }
     *
     * @apiErrorExample {json} Error-Response:
     *     HTTP/1.1 200 OK
     *     {
     *       "error": "This username does not exist"
     *       "code": "UserNotFound"
     *     }
     */
    server.del(
        '/users/:user/2fa/custom',
        tools.asyncifyJson(async (req, res, next) => {
            res.charSet('utf-8');

            const schema = Joi.object().keys({
                user: Joi.string().hex().lowercase().length(24).required(),
                sess: sessSchema,
                ip: sessIPSchema
            });

            const result = schema.validate(req.params, {
                abortEarly: false,
                convert: true
            });

            if (result.error) {
                res.status(400);
                res.json({
                    error: result.error.message,
                    code: 'InputValidationError',
                    details: tools.validationErrors(result)
                });
                return next();
            }

            // permissions check
            if (req.user && req.user === result.value.user) {
                req.validate(roles.can(req.role).updateOwn('users'));
            } else {
                req.validate(roles.can(req.role).updateAny('users'));
            }

            let user = new ObjectID(result.value.user);
            let disabled2fa = await userHandler.disableCustom2fa(user, result.value);

            if (!disabled2fa) {
                res.json({
                    error: 'Failed to disable 2FA',
                    code: '2FADisableFailed'
                });
                return next();
            }

            if (disabled2fa && req.accessToken && typeof req.accessToken.update === 'function') {
                try {
                    // update access token data for current session after custom 2FA disabled
                    await req.accessToken.update();
                } catch (err) {
                    // ignore
                }
            }

            res.json({
                success: true
            });

            return next();
        })
    );
};