"use strict";

// modules
const async = require('async');
const express = require('express');
const logger = require('debug')('cc:overview');

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

// Mongoose Model using mongoDB
const UserModel = require('../models/user');
const SquadModel = require('../models/squad');
const RankModel = require('../models/rank');

const overview = express.Router();

// routes **********************
overview.route('/')
  .get((req, res, next) => {
    let countOpfor = 0;
    let countBlufor = 0;
    const armyOverview = {
      NATO: {
        squads: []
      },
      CSAT: {
        squads: []
      }
    };

    SquadModel.find({}, {'sortingNumber': 0, 'updatedAt': 0, 'timestamp': 0, '__v': 0}, {
      sort: {
        sortingNumber: 'asc',
        name: 'asc'
      }
    }, (err, squads) => {
      if (err) {
        return next(err);
      }
      async.eachSeries(squads, (squad, callback) => {
        UserModel.find({squadId: squad._id}, {
          'squadId': 0,
          'updatedAt': 0,
          'timestamp': 0,
          '__v': 0
        }, {sort: {rankLvl: 'desc', name: 'asc'}}, (err, users) => {
          const squadMembers = [];
          async.eachSeries(users, (user, callback) => {
            RankModel.findOne({level: user.rankLvl, fraction: squad.fraction}, (err, rank) => {
              if (err) {
                return next(err);
              }
              const usr = user.toObject();
              usr.rank = rank.name;
              delete usr.rankLvl;
              squadMembers.push(usr)

              callback();
            });
          }, (err) => {
            if (err) {
              return next(err);
            }
            const s = squad.toObject();
            s.members = squadMembers;
            s.memberCount = squadMembers.length;
            if (s.fraction === 'BLUFOR') {
              delete s.fraction;
              armyOverview.NATO.squads.push(s);
              countBlufor += s.members.length;
            }
            if (s.fraction === 'OPFOR') {
              delete s.fraction;
              armyOverview.CSAT.squads.push(s);
              countOpfor += s.members.length;
            }
            callback();
          });
        });

      }, (err) => {
        if (err) {
          return next(err);
        }
        armyOverview.NATO.memberCount = countBlufor;
        armyOverview.CSAT.memberCount = countOpfor;
        res.locals.items = armyOverview;
        res.locals.processed = true;
        next();
      });
    });
  })

  .all(
    routerHandling.httpMethodNotAllowed
  );


overview.use(routerHandling.emptyResponse);


module.exports = overview;