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

const Events    = require('./events.js');
const LogNames  = require('./user_log_name.js');
const SysProps  = require('./system_property.js');

const DefaultKeepForDays = 365;

module.exports = function systemEventUserLogInit(statLog) {
    const systemEvents = Events.getSystemEvents();

    const interestedEvents = [
        systemEvents.NewUser,
        systemEvents.UserLogin, systemEvents.UserLogoff,
        systemEvents.UserUpload, systemEvents.UserDownload,
        systemEvents.UserPostMessage, systemEvents.UserSendMail,
        systemEvents.UserRunDoor, systemEvents.UserSendNodeMsg,
        systemEvents.UserAchievementEarned,
    ];

    const append = (e, n, v) => {
        statLog.appendUserLogEntry(e.user, n, v, DefaultKeepForDays);
    };

    Events.addMultipleEventListener(interestedEvents, (event, eventName) => {
        const detailHandler = {
            [ systemEvents.NewUser ] : (e) => {
                append(e, LogNames.NewUser, 1);
                statLog.incrementNonPersistentSystemStat(SysProps.NewUsersTodayCount, 1);
            },
            [ systemEvents.UserLogin ] : (e) => {
                append(e, LogNames.Login, 1);
            },
            [ systemEvents.UserLogoff ] : (e) => {
                append(e, LogNames.Logoff, e.minutesOnline);
            },
            [ systemEvents.UserUpload ] : (e) => {
                if(e.files.length) {    //  we can get here for dupe uploads
                    append(e, LogNames.UlFiles, e.files.length);
                    const totalBytes = e.files.reduce( (bytes, fileEntry) => bytes + fileEntry.meta.byte_size, 0);
                    append(e, LogNames.UlFileBytes, totalBytes);
                }
            },
            [ systemEvents.UserDownload ] : (e) => {
                if(e.files.length) {
                    append(e, LogNames.DlFiles, e.files.length);
                    const totalBytes = e.files.reduce( (bytes, fileEntry) => bytes + fileEntry.byteSize, 0);
                    append(e, LogNames.DlFileBytes, totalBytes);
                }
            },
            [ systemEvents.UserPostMessage ] : (e) => {
                append(e, LogNames.PostMessage, e.areaTag);
            },
            [ systemEvents.UserSendMail ] : (e) => {
                append(e, LogNames.SendMail, 1);
            },
            [ systemEvents.UserRunDoor ] : (e) => {
                append(e, LogNames.RunDoor, e.doorTag);
                append(e, LogNames.RunDoorMinutes, e.runTimeMinutes);
            },
            [ systemEvents.UserSendNodeMsg ] : (e) => {
                append(e, LogNames.SendNodeMsg, e.global ? 'global' : 'direct');
            },
            [ systemEvents.UserAchievementEarned ] : (e) => {
                append(e, LogNames.AchievementEarned, e.achievementTag);
                append(e, LogNames.AchievementPointsEarned, e.points);
            }
        }[eventName];

        if(detailHandler) {
            detailHandler(event);
        }
    });
};