//  moodLight.js
//
//  This script can be tested in Interface, but should ultimately run as an AC script.
//  Tweens serveral set moodlights.
//
//  Created by Thijs Wenker on September 21, 2016.
//  Copyright 2016 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//


// Light schedules have the Cycle Percentage as key and the color as value
var DEFAULT_LIGHT_SCHEDULE = {
    0.0: {red: 247, green: 175, blue: 42},
    0.3334: {red: 250, green: 20, blue: 112},
    0.6667: {red: 0, green: 128, blue: 102},
};

var DEFAULT_LIGHT_SCHEDULE_2 = {
    0.0: {red: 199, green: 43, blue: 0},
    0.3334: {red: 107, green: 3, blue: 148},
    0.6667: {red: 0, green: 13, blue: 150},
};

// Setup your mood-light below
var moodLights = [
{
    properties: {
        name: 'color Debug',
        position: {
            x: -27.46241426467896,
            y: 8.558837890625,
            z: -32.07110595703125
        },
        type: 'Sphere'
    },
    schedule: DEFAULT_LIGHT_SCHEDULE
},
{
    properties: {
        cutoff: 90,
        dimensions: {
            x: 59.687240600585938,
            y: 59.687240600585938,
            z: 59.687240600585938
        },
        falloffRadius: 100,
        intensity: 2.2999999523162842,
        name: 'RotatingLight1',
        position: {
            x: -27.00,
            y: 8.6062,
            z: -32.2729
        },
        rotation: {
            w: 1,
            x: -1.52587890625e-05,
            y: -1.52587890625e-05,
            z: -1.52587890625e-05
        },
        type: 'Light'
    },
    schedule: DEFAULT_LIGHT_SCHEDULE
},
{
    properties: {
        cutoff: 90,
        dimensions: {
            x: 68.6043701171875,
            y: 68.6043701171875,
            z: 68.6043701171875
        },
        falloffRadius: 10,
        intensity: 15,
        name: 'RotatingLight2',
        position: {
            x: -27.00,
            y: 4.6453,
            z: -32.1627
        },
        rotation: {
            w: 1,
            x: -1.52587890625e-05,
            y: -1.52587890625e-05,
            z: -1.52587890625e-05
        },
        type: 'Light'
    },
    schedule: DEFAULT_LIGHT_SCHEDULE_2
}
];

// The time it takes for a cycle to 100% complete (1.0)
var CYCLE_SECONDS = 100; // 5 minutes

// MAX_INACTIVE_SECONDS will contineous be added with the age to the lifetime, when the script is inactive the lights will disappear
var MAX_INACTIVE_SECONDS = 10;

// How frequently do we send out updates per second? :
var UPDATE_FREQUENCY = 50; //Hz

const MILLISECONDS_PER_SECOND = 1000;

function getNearestArrayValues(array, goal, continuous) {
    var floorValue = null, ceilValue = null;
    array.forEach(function(entry) {
        if ((floorValue === null || entry > floorValue) && entry <= goal) {
            floorValue = entry;
        }
        if ((ceilValue === null || entry < ceilValue) && entry >= goal) {
            ceilValue = entry;
        }
    });
    if (continuous && floorValue === null) {
        floorValue = Math.max.apply(Math, array);
    }
    if (continuous && ceilValue === null) {
        ceilValue = Math.min.apply(Math, array);
    }
    return {
        floor: floorValue,
        ceil: ceilValue
    };
}

function tweeningPercentage(min, max, current) {
    var currentOffset = (current >= min ? (current - min) : (current + 1 - min));
    var dividerOffset = max - min;
    if (min > max) {
        dividerOffset += 1;
    }
    return currentOffset / dividerOffset;
}

function mix(valueA, valueB, mixPercentage) {
    return valueA + mixPercentage * (valueB - valueA);
}

function MoodLight(properties, schedule) {
    this.properties = properties;
    this.schedule = schedule;
    this.properties['lifetime'] = MAX_INACTIVE_SECONDS;
    this.entityID = Entities.addEntity(this.properties);
    this.creationSeconds = Date.now() / MILLISECONDS_PER_SECOND;
}

MoodLight.prototype = {
    properties: null,
    schedule: null,
    entityID: null,
    creationSeconds: null,
    getCurrentColor: function() {
        var percentageOfCycle = ((Date.now() / MILLISECONDS_PER_SECOND) % CYCLE_SECONDS) / CYCLE_SECONDS;
        var minMaxKey = getNearestArrayValues(Object.keys(this.schedule), percentageOfCycle, true);
        var minColor = this.schedule[minMaxKey.floor];
        var maxColor = this.schedule[minMaxKey.ceil];
        var mixPercentage = tweeningPercentage(minMaxKey.floor, minMaxKey.ceil, percentageOfCycle);
        var mixedColor = {
            red: mix(minColor.red, maxColor.red, mixPercentage),
            green: mix(minColor.green, maxColor.green, mixPercentage),
            blue: mix(minColor.blue, maxColor.blue, mixPercentage),
        };
        //print((percentageOfCycle * 100).toFixed(3) + '% ' + JSON.stringify(minColor) + ' mix ( ' + (mixPercentage * 100).toFixed(3) + '% ' + ' ) ' + JSON.stringify(maxColor) + ' = ' + JSON.stringify(mixedColor));
        return mixedColor;
    },
    getNewLifetime: function() {
        return ((Date.now() / MILLISECONDS_PER_SECOND) -this.creationSeconds) + MAX_INACTIVE_SECONDS;
    },
    update: function() {
        var newProperties = {};
        newProperties['lifetime'] = this.getNewLifetime();
        newProperties['color'] = this.getCurrentColor();
        Entities.editEntity(this.entityID, newProperties);
    }
};

var moodLightInstances = [];

var initialized = false;

Script.setInterval(function() {
    if (!initialized) {
        if (Entities.serversExist() && Entities.canRez()) {
            Entities.setPacketsPerSecond(60000);
            moodLights.forEach(function(moodLight) {
                moodLightInstances.push(new MoodLight(moodLight.properties, moodLight.schedule));
            });
            initialized = true;
        }
        return;
    }

    moodLightInstances.forEach(function(moodLight) {
        moodLight.update();
    });
}, MILLISECONDS_PER_SECOND / UPDATE_FREQUENCY);