/* jslint node: true */
'use strict';

//  ENiGMA½
const { MenuModule }    = require('./menu_module.js');
const { getUserList }   = require('./user.js');
const { Errors }        = require('./enig_error.js');
const UserProps         = require('./user_property.js');

//  deps
const moment            = require('moment');
const async             = require('async');
const _                 = require('lodash');

exports.moduleInfo = {
    name        : 'User List',
    desc        : 'Lists all system users',
    author      : 'NuSkooler',
};

const MciViewIds = {
    userList    : 1,
};

exports.getModule = class UserListModule extends MenuModule {
    constructor(options) {
        super(options);
    }

    mciReady(mciData, cb) {
        super.mciReady(mciData, err => {
            if(err) {
                return cb(err);
            }

            async.series(
                [
                    (next) => {
                        return this.prepViewController('userList', 0, mciData.menu, next);
                    },
                    (next) => {
                        const userListView = this.viewControllers.userList.getView(MciViewIds.userList);
                        if(!userListView) {
                            return cb(Errors.MissingMci(`Missing user list MCI ${MciViewIds.userList}`));
                        }

                        const fetchOpts = {
                            properties      : [ UserProps.RealName, UserProps.Location, UserProps.Affiliations, UserProps.LastLoginTs ],
                            propsCamelCase  : true, //  e.g. real_name -> realName
                        };
                        getUserList(fetchOpts, (err, userList) => {
                            if(err) {
                                return next(err);
                            }

                            const dateTimeFormat = _.get(
                                this, 'menuConfig.config.dateTimeFormat', this.client.currentTheme.helpers.getDateTimeFormat('short'));

                            userList = userList.map(entry => {
                                return Object.assign(
                                    entry,
                                    {
                                        text            : entry.userName,
                                        affils          : entry.affiliation,
                                        lastLoginTs     : moment(entry.lastLoginTimestamp).format(dateTimeFormat),
                                    }
                                );
                            });

                            userListView.setItems(userList);
                            userListView.redraw();
                            return next(null);
                        });
                    }
                ],
                err => {
                    if(err) {
                        this.client.log.error( { error : err.message }, 'Error loading user list');
                    }
                    return cb(err);
                }
            );
        });
    }
};