//  parentator.js
//
//  Script Type: Entity
//  Created by Jeff Moyes on 6/30/2017
//  Copyright 2017 High Fidelity, Inc.
//
//  This script allows users to parent one object to another via the "parent-ator" entity
//  (which looks like a purple gun-like object). The user:
//  1) equips their avatar with this parent-ator,
//  2) taps the end of the parent-ator on an entity (which becomes the child entity), and
//  3) taps the end of the parent-ator on a second entity (which becomes the parent entity)
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//


(function() {
    var MESSAGE_0_TEXTURE_URL = Script.resolvePath( 'resources/message-0-off.png' );
    var MESSAGE_1_TEXTURE_URL = Script.resolvePath( 'resources/message-1-start.png' );
    var MESSAGE_2_TEXTURE_URL = Script.resolvePath( 'resources/message-2-noperms.png' );
    var MESSAGE_3_TEXTURE_URL = Script.resolvePath( 'resources/message-3-tryagain.png' );
    var MESSAGE_4_TEXTURE_URL = Script.resolvePath( 'resources/message-4-setparent.png' );
    var MESSAGE_5_TEXTURE_URL = Script.resolvePath( 'resources/message-5-success.png' );

    var SOUND_1_URL = Script.resolvePath( 'resources/parent-tool-sound1.wav' );
    var SOUND_2_URL = Script.resolvePath( 'resources/parent-tool-sound2.wav' );
    var SOUND_ERROR_URL = Script.resolvePath( 'resources/parent-tool-sound-error.wav' );
    var SOUND_SUCCESS_URL = Script.resolvePath( 'resources/parent-tool-sound-success.wav' );
    var SOUND_1, SOUND_2, SOUND_ERROR, SOUND_SUCCESS;
    var childEntityID, parentEntityID;
    var active = false;




    function Parentator() {
        return;
    }

    Parentator.prototype.turnOff = function() {
        childEntityID = 0;
        parentEntityID = 0;
        this.active = false;
        Entities.editEntity( this.entityID, { textures: JSON.stringify({ "texture-message": MESSAGE_0_TEXTURE_URL }) });
    }

    Parentator.prototype.turnOn = function() {
        childEntityID = 0;
        parentEntityID = 0;
        this.active = true;
        if (Entities.canRez()) {
            Entities.editEntity( this.entityID, { textures: JSON.stringify({ "texture-message": MESSAGE_1_TEXTURE_URL }) });
            this.playSoundAtCurrentPosition( SOUND_1 );
        } else {
            Entities.editEntity( this.entityID, { textures: JSON.stringify({ "texture-message": MESSAGE_2_TEXTURE_URL }) });
            this.playSoundAtCurrentPosition( SOUND_ERROR );
        }
    }


    Parentator.prototype.preload = function( entityID ) {
        this.entityID = entityID;
        SOUND_1 = SoundCache.getSound( SOUND_1_URL );
        SOUND_2 = SoundCache.getSound( SOUND_2_URL );
        SOUND_ERROR = SoundCache.getSound( SOUND_ERROR_URL );
        SOUND_SUCCESS = SoundCache.getSound( SOUND_SUCCESS_URL );

        // Makue sure it's off
        this.turnOff();
    }

    Parentator.prototype.startEquip = function( args ) {
        this.hand = args[0];
        this.turnOn();
    }


    Parentator.prototype.releaseEquip = function( args ) {
        this.hand = undefined;
        this.turnOff();
    }

    Parentator.prototype.collisionWithEntity = function( parentatorID, collidedID, collisionInfo ) {
        if ( this.active ) {
            // We don't want to be able to select Lights, Zone, and Particles but they are not collidable anyway so we don't have to worry about them
            var collidedEntityProperties = Entities.getEntityProperties( collidedID );

            if ( !Entities.canRez() ) {
                Entities.editEntity( this.entityID, { textures: JSON.stringify({ "texture-message": MESSAGE_2_TEXTURE_URL }) });
                this.playSoundAtCurrentPosition( SOUND_ERROR );
            }

            // User has just reclicked the first entity (or it's 'bounced')
            if ( childEntityID == collidedID ) {
                return;
            }

            if ( collidedEntityProperties.locked ) {
                Entities.editEntity( this.entityID, { textures: JSON.stringify({ "texture-message": MESSAGE_3_TEXTURE_URL }) });
                this.playSoundAtCurrentPosition( SOUND_ERROR );
                return;
            }

            // If no entity has been chosen
            if ( childEntityID == 0 ) {
                childEntityID = collidedID;

                // if there is a parentID, remove it
                if ( collidedEntityProperties.parentID != "{00000000-0000-0000-0000-000000000000}" ) {
                    Entities.editEntity( collidedID, { parentID: "{00000000-0000-0000-0000-000000000000}" });
                }

                if ( collidedEntityProperties.dynamic ) {
                    Entities.editEntity( collidedID, { dynamic: false });
                }

                Entities.editEntity( this.entityID, { textures: JSON.stringify({ "texture-message": MESSAGE_4_TEXTURE_URL }) });
                this.playSoundAtCurrentPosition( SOUND_2 );
            } else {
                parentEntityID = collidedID;
                this.setParent();
            }
        }
    }

    Parentator.prototype.setParent = function() {
        var _this = this;
        Entities.editEntity( childEntityID, { parentID: parentEntityID });
        Entities.editEntity( this.entityID, { textures: JSON.stringify({ "texture-message": MESSAGE_5_TEXTURE_URL }) });
        this.playSoundAtCurrentPosition( SOUND_SUCCESS );
        Script.setTimeout( function() {
            _this.turnOn();     // reset
        }, 5000 );
    }

    Parentator.prototype.playSoundAtCurrentPosition = function( sound ) {
        var audioProperties = {
            volume: 0.3,
            position: Entities.getEntityProperties( this.entityID ).position,
            localOnly: true
        }
        Audio.playSound( sound, audioProperties );
    }

    Parentator.prototype.unload = function () {
        Entities.deleteEntity( this.entityID );
    }

    // entity scripts always need to return a newly constructed object of our type
    return new Parentator();
});