'use strict';

// modules
const express = require('express');

// HTTP status codes by name
const codes = require('./http-codes');

const routerHandling = require('../middleware/router-handling');

// Mongoose Model using mongoDB
const AppUserModel = require('../models/app-user');

const account = new express.Router();

account.route('/')
       .get((req, res, next) => {
         AppUserModel.find({}, {}, {sort: {username: 1}})
                     .populate('squad')
                     .exec((err, items) => {
                       if (err) {
                         err.status = codes.servererror;
                         return next(err);
                       }
                       res.locals.items = items;
                       res.locals.processed = true;
                       next();
                     });
       })
       .all(
         routerHandling.httpMethodNotAllowed
       );

// routes **********************
account.route('/:id')
       .get((req, res, next) => {
         AppUserModel.findById(req.params.id)
                     .populate('squad')
                     .exec((err, item) => {
                       if (err) {
                         err.status = codes.servererror;
                       } else if (!item) {
                         err = new Error('item not found');
                         err.status = codes.notfound;
                       }
                       res.locals.items = item;
                       next(err);
                     });
       })

       .patch((req, res, next) => {
         if (!req.body || (req.body._id && req.body._id !== req.params.id)) {
           const err = new Error(
             'id of PATCH resource and send JSON body are not equal ' + req.params.id + ' ' + req.body._id);
           err.status = codes.notfound;
           return next(err);
         }

         req.body.updatedAt = new Date();
         req.body.$inc = {__v: 1};

         AppUserModel.findByIdAndUpdate(req.params.id, req.body, {new: true})
                     .populate('squad')
                     .exec((err, item) => {
                       if (err) {
                         err.status = codes.wrongrequest;
                       } else if (!item) {
                         err = new Error('appUser not found');
                         err.status = codes.notfound;
                       } else {
                         res.locals.items = item;
                       }
                       next(err);
                     });
       })

       .delete((req, res, next) => {
         AppUserModel.findByIdAndRemove(req.params.id, (err, item) => {
           if (err) {
             err.status = codes.wrongrequest;
           } else if (!item) {
             err = new Error('item not found');
             err.status = codes.notfound;
           }
           res.locals.processed = true;
           next(err);
         });
       })

       .all(
         routerHandling.httpMethodNotAllowed
       );

account.use(routerHandling.emptyResponse);

module.exports = account;