opt-cc/api/routes/request.js

'use strict';

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

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

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

const apiAuthenticationMiddleware = require('../middleware/auth-middleware');
const checkSql = require('../middleware/permission-check').checkSql;
const checkHl = require('../middleware/permission-check').checkHl;

// Mongoose Model using mongoDB
const UserModel = require('../models/user');
const AwardingModel = require('../models/awarding');
const PromotionModel = require('../models/promotion');

// result set for proposer(appUser) population
const resultSet = {
  '__v': 0,
  'updatedAt': 0,
  'timestamp': 0,
  'password': 0,
  'permission': 0,
  'secret': 0,
  'activated': 0,
};

const request = new express.Router();


// routes **********************
request.route('/award')

       .post(apiAuthenticationMiddleware, checkSql, (req, res, next) => {
         const award = new AwardingModel(req.body);
         award.confirmed = 0;
         award.proposer = req.user._id;
         // timestamp and default are set automatically by Mongoose Schema Validation
         award.save((err) => {
           if (err) {
             err.status = codes.wrongrequest;
             err.message += ' in fields: ' + Object.getOwnPropertyNames(err.errors);
             return next(err);
           }
           res.status(codes.created);
           res.locals.items = award;
           next();
         });
       })

       .all(
         routerHandling.httpMethodNotAllowed
       );

request.route('/promotion')

       .get((req, res, next) => {
         // TODO: add SQL authentication
         const squadFilter = req.query.squadId;
         const fractFilter = req.query.fractFilter;
         const progressFilter = req.query.inProgress;
         let filter;
         if (squadFilter) {
           filter = {squadId: squadFilter};
         }
         let userIds = [];
         UserModel.find(filter).populate('squadId').exec((err, items) => {
           if (err) {
             err.status = codes.servererror;
             return next(err);
           }

           for (let item of items) {
             if (!fractFilter || (fractFilter && item.squadId && item.squadId.fraction === fractFilter)) {
               userIds.push(item._id);
             }
           }

           let promotionFilter = {
             userId: {'$in': userIds},
           };
           if (progressFilter) {
             promotionFilter.confirmed = 0;
           }

           PromotionModel.find(promotionFilter, {}, {sort: {timestamp: 'desc'}})
                         .populate('userId').populate('proposer', resultSet).exec((err, items) => {
             if (err) {
               err.status = codes.servererror;
               return next(err);
             }

             if (items && items.length > 0) {
               res.locals.items = items;
             } else {
               res.locals.items = [];
             }
             res.locals.processed = true;
             next();
           });
         });
       })

       .post(apiAuthenticationMiddleware, checkSql, (req, res, next) => {
         const promotion = new PromotionModel(req.body);
         promotion.confirmed = 0;
         promotion.proposer = req.user._id;
         // timestamp and default are set automatically by Mongoose Schema Validation
         promotion.save((err) => {
           if (err) {
             err.status = codes.wrongrequest;
             err.message += ' in fields: ' + Object.getOwnPropertyNames(err.errors);
             return next(err);
           }
           res.status(codes.created);
           res.locals.items = promotion;
           next();
         });
       })

       .all(
         routerHandling.httpMethodNotAllowed
       );


request.route('/promotion/:id')
       .patch(apiAuthenticationMiddleware, checkHl, (req, res, next) => {
         if (!req.body || (req.body._id && req.body._id !== req.params.id)) {
           // little bit different as in PUT. :id does not need to be in data, but if the _id and url id must match
           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;
           next(err);
           return; // prevent node to process this function further after next() has finished.
         }

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

         // PATCH is easier with mongoose than PUT. You simply update by all data that comes from outside. no need to
         // reset attributes that are missing.
         PromotionModel.findByIdAndUpdate(req.params.id, req.body, {new: true}, (err, item) => {
           if (err) {
             err.status = codes.wrongrequest;
           } else if (!item) {
             err = new Error('item not found');
             err.status = codes.notfound;
           } else {
             if (item.confirmed === 1) {
               let updateUser = {
                 _id: item.userId,
                 rankLvl: item.newRankLvl,
               };
               UserModel.findByIdAndUpdate(updateUser._id, updateUser, {new: true}, (err, item) => {
                 if (err) {
                   err.status = codes.wrongrequest;
                 } else if (!item) {
                   err = new Error('user not found');
                   err.status = codes.notfound;
                 }
               });
             }
             res.locals.items = item;
           }
           next(err);
         });
       })
       .all(
         routerHandling.httpMethodNotAllowed
       );

// this middleware function can be used, if you like or remove it
// it looks for object(s) in res.locals.items and if they exist, they are send to the client as json
request.use(routerHandling.emptyResponse);


module.exports = request;