//
// ballDrop.js
// 
// Created by Rebecca Stankus on 12/06/2018
// Copyright High Fidelity 2018
//
// Licensed under the Apache 2.0 License
// See accompanying license file or http://apache.org/
//

(function () {
    var _this;

    var TIME_CHECK_INTERVAL_MS = 50;
    var FIREWORK_INTERVAL = 500;
    var ONE_THOUSAND = 1000;
    var SECONDS_PER_MINUTE = 60;
    var MINUTES_PER_HOUR = 60;
    var TWO_DIGITS = 10;
    var TARGET_TIME_INDEX = 13;
    var BALL_START_POSITION = { x: -30.8416, y: 21.7429, z: -110.2663 };
    var INTERVAL_DROP_DISTANCE_M = 0.0090;
    var SONGS = [
        SoundCache.getSound(Script.resolvePath("assets/audio/auldBoogie.mp3")),
        SoundCache.getSound(Script.resolvePath("assets/audio/auldBrassy.mp3")),
        SoundCache.getSound(Script.resolvePath("assets/audio/auldElectro.mp3")),
        SoundCache.getSound(Script.resolvePath("assets/audio/auldGamey.mp3")),
        SoundCache.getSound(Script.resolvePath("assets/audio/auldJazzy.mp3")),
        SoundCache.getSound(Script.resolvePath("assets/audio/auldJimi.mp3")),
        SoundCache.getSound(Script.resolvePath("assets/audio/auldMarchy.mp3"))
    ];
    var NUMBER_OF_SONGS = 7;
    var EXPLOSION = SoundCache.getSound(Script.resolvePath("assets/audio/explosion.mp3"));
    var FIREWORK = SoundCache.getSound(Script.resolvePath("assets/audio/firework.mp3"));
    var TICK = SoundCache.getSound(Script.resolvePath("assets/audio/tick.wav"));
    var TOCK = SoundCache.getSound(Script.resolvePath("assets/audio/tock.wav"));
    var HOURS_PER_DAY = 24;
    var MAX_NUMBER_OF_DROPS = 5;
    var PRE_COUNTDOWN_TEXT = "Countdown Starts Soon!";

    var currentSongDuration;
    var songVersion = 0;
    var injector;
    var ballDropInterval;
    var currentPosition = { x: -30.8416, y: 21.7429, z: -110.2663 };
    var confetti;
    var ball = "{6414271b-f0f4-4a62-b196-ac83dfd95253}";
    var innerBall = "{42910458-c9e3-4a83-93d4-f5732b6a516e}";
    var ballParticle = "{9d774699-e4f7-4de5-a264-d6ed212eec5f}";
    var cityListText = "{80823bd4-5bd7-410d-8e3e-c3d019760a8f}";
    var fireworks = ["{8eaf6f0a-9410-4929-9294-2956cb80c08c}", "{f8e6b4cc-20b4-4316-a2c3-4d29b25f6380}",
        "{d9e7b29b-16d7-4dfa-8f3d-45afbbd50eb6}", "{5f05aeb7-14cf-424e-8c4c-8c04f5719548}"];
    var targetName;
    var targetDate;
    var targetTime;
    var targetHour;
    var targetDay;
    var targetMonth = "Dec";
    var targetYear;
    var numberOfDrops = 0;
    var currentCities;
    var lastSecond;
    var tick = true;
    var cities = ["Seattle, San Francisco, Las Vegas", "Anchorage, Fairbanks, Unalaska",
        "Honolulu, Rarotonga, Papeete", "Alofi, Midway, Pago Pago", 
        "Baker Island, Howland Island"];

    var Countdown = function() {
        _this = this;
    };

    Countdown.prototype = {
        interval: null,
        targetTime: null,

        preload: function(entityID) {
            Entities.editEntity(ball, {
                position: BALL_START_POSITION,
                animation: { hold: true, currentFrame: 1 }
            });
            Entities.editEntity(innerBall, { position: BALL_START_POSITION });
            Entities.editEntity(cityListText, { text: PRE_COUNTDOWN_TEXT });
            _this.entityID = entityID;
            _this.getTargetTime();
            _this.startSyncing();
            Entities.getChildrenIDs(_this.entityID).forEach(function(child) {
                var name = Entities.getEntityProperties(child, 'name').name;
                if (name === "New Year's Confetti") {
                    confetti = child;
                }
            });
            Entities.editEntity(ballParticle, { isEmitting: false });
            Entities.editEntity(confetti, { isEmitting: false });
        },

        startSyncing: function() {
            currentPosition = { x: -30.8416, y: 21.7429, z: -110.2663 };
            _this.interval = Script.setInterval(function() {
                _this.synchronize();
            }, TIME_CHECK_INTERVAL_MS);
        },

        getTargetTime: function() {
            targetName = Entities.getEntityProperties(_this.entityID, 'name').name;
            targetDate = new Date(targetName.substring(TARGET_TIME_INDEX, (targetName.length)));
            targetTime = targetDate.getTime();
            targetYear = targetDate.getFullYear();
            targetDay = targetDate.getDate();
            targetHour = targetDate.getHours();
        },

        synchronize: function() {
            var currentTime = new Date().getTime();
            var untilTargetTime = targetTime - currentTime;
            var targetPassed = false;
            var hours = Math.floor((untilTargetTime % (ONE_THOUSAND * SECONDS_PER_MINUTE * MINUTES_PER_HOUR * HOURS_PER_DAY))
                 / (ONE_THOUSAND * SECONDS_PER_MINUTE * MINUTES_PER_HOUR ));
            if (hours > 0) {
                Entities.editEntity(cityListText, { text: PRE_COUNTDOWN_TEXT });
                Entities.editEntity(_this.entityID, { text: "--:--" });
                return;
            } else {
                if (Entities.getEntityProperties(cityListText, 'text').text === PRE_COUNTDOWN_TEXT) {
                    currentCities = 0;
                    Entities.editEntity(cityListText, { text: cities[currentCities] });
                }
            }
            var minutes = Math.floor((untilTargetTime % (ONE_THOUSAND * SECONDS_PER_MINUTE * MINUTES_PER_HOUR )) /
                (ONE_THOUSAND * SECONDS_PER_MINUTE));
            var seconds = Math.floor((untilTargetTime % (ONE_THOUSAND * SECONDS_PER_MINUTE)) / ONE_THOUSAND);
            if (minutes < 1) {
                currentPosition.y -= INTERVAL_DROP_DISTANCE_M;
                Entities.editEntity(ball, { position: currentPosition });
                Entities.editEntity(innerBall, { position: currentPosition });
                if (seconds < 1) {
                    targetPassed = true;
                }
            }
            minutes = minutes < TWO_DIGITS ? "0" + minutes : minutes;
            seconds = seconds < TWO_DIGITS ? "0" + seconds : seconds;
            if (targetPassed) {
                Entities.editEntity(_this.entityID, { text: "2019!" });
                _this.timeUp();
            } else {
                if (lastSecond !== seconds) {
                    if (minutes < 1 && hours < 1) {
                        lastSecond = seconds;
                        if (tick) {
                            _this.playSound(TICK, Entities.getEntityProperties( cityListText, 'position').position);
                            tick = false;
                        } else {
                            _this.playSound(TOCK, Entities.getEntityProperties( cityListText, 'position').position);
                            tick = true;
                        }
                    }
                    Entities.editEntity(_this.entityID, { text: minutes + ":" + seconds });
                }  
            }
        },

        timeUp: function() {
            _this.playSound("auldLang", currentPosition);
            _this.playSound(EXPLOSION, currentPosition);
            numberOfDrops++;
            Script.clearInterval(_this.interval);
            _this.interval = Script.setInterval(function() {
                var msToExplode = Math.random() * 1000;
                var currentFirework = Math.floor(Math.random() * 4);
                var newX = (Math.random() * 60) + (BALL_START_POSITION.x - 30);
                var newY = (Math.random() * 20) + (BALL_START_POSITION.y + 5);
                var newZ = (Math.random() * 60) + (BALL_START_POSITION.z - 30);
                var newPosition = { x: newX, y: newY, z: newZ };
                Script.setTimeout(function() {
                    Entities.editEntity(fireworks[currentFirework], { 
                        position: newPosition,
                        isEmitting: true
                    });
                    _this.playSound(FIREWORK, Entities.getEntityProperties( newPosition, 'position').position);
                    Script.setTimeout(function() {
                        Entities.editEntity(fireworks[currentFirework], { isEmitting: false });
                    }, ONE_THOUSAND);
                }, msToExplode);
            }, FIREWORK_INTERVAL);
            Entities.editEntity(ballParticle, { isEmitting: true });
            Entities.editEntity(ball, { animation: { hold: false }});
            currentPosition = BALL_START_POSITION;
            Entities.editEntity(confetti, { isEmitting: true });
            Script.setTimeout(function() {
                Script.clearInterval(_this.interval);
                fireworks.forEach(function(firework) {
                    var newX = (Math.random() * 60) + (BALL_START_POSITION.x - 30);
                    var newY = (Math.random() * 20) + (BALL_START_POSITION.y + 5);
                    var newZ = (Math.random() * 60) + (BALL_START_POSITION.z - 30);
                    var newPosition = { x: newX, y: newY, z: newZ };
                    Entities.editEntity(firework, { 
                        position: newPosition,
                        isEmitting: true
                    });
                    _this.playSound(FIREWORK, Entities.getEntityProperties( newPosition, 'position').position);
                });
                Entities.editEntity(ball, {
                    position: BALL_START_POSITION,
                    animation: { hold: true, currentFrame: 1 }
                });
                Entities.editEntity(innerBall, { position: BALL_START_POSITION});
                Entities.editEntity(confetti, { isEmitting: false });
                Script.setTimeout(function() {
                    Entities.editEntity(ballParticle, { isEmitting: false });
                    if (numberOfDrops === MAX_NUMBER_OF_DROPS) {
                        Entities.editEntity(_this.entityID, { text: "2019!" });
                        Entities.editEntity(cityListText, { text: "HAPPY NEW YEAR EVERYONE!" });
                    } else {
                        targetHour++;
                        if (targetHour > 23) {
                            targetHour -= 24;
                            targetDay++;
                            if (targetDay > 30) {
                                targetDay-= 31;
                                targetMonth = "Jan";
                                targetYear = 2019;
                            }
                        }
                        targetTime = new Date(targetMonth + " " + targetDay + ", " + targetYear + " " + targetHour + 
                            ":00:00").getTime();
                        currentCities++;
                        Entities.editEntity(cityListText, { text: cities[currentCities] });
                        _this.startSyncing();
                    }
                }, 500);
            }, currentSongDuration);
            Script.setTimeout(function() {
                fireworks.forEach(function (firework) {
                    Entities.editEntity(firework, { isEmitting: false });
                });
            }, currentSongDuration + 1000);
        },

        playSound: function(sound, position) {
            if (sound === "auldLang") {
                if (SONGS[songVersion].downloaded) {
                    currentSongDuration = SONGS[songVersion].duration * 1000;
                    injector = Audio.playSound(SONGS[songVersion], {
                        position: Entities.getEntityProperties(ball, 'position').position,
                        volume: 1
                    });
                    songVersion++;
                    if (songVersion === NUMBER_OF_SONGS) {
                        songVersion = 0;
                    }
                }
            } else if (sound.downloaded) {
                injector = Audio.playSound(sound, {
                    position: Entities.getEntityProperties(ball, 'position').position,
                    volume: 1
                });
            }
        },

        unload: function() {
            if (injector) {
                injector.stop();
            }
            if (_this.interval) {
                Script.clearInterval(_this.interval);
            }
            if (ballDropInterval) {
                Script.clearInterval(ballDropInterval);
            }
        }
    };

    return new Countdown;
});