import { EventDispatcher } from 'three';
import { EVENT_CHANGED } from './events';


// GENERAL:
/** The dimensioning unit for 2D floorplan measurements. */
export var configDimUnit = 'dimUnit';
// WALL:
/** The initial wall height in cm. */
export const configWallHeight = 'wallHeight';
/** The initial wall thickness in cm. */
export const configWallThickness = 'wallThickness';

export const configSystemUI = 'systemUI';

export const scale = 'scale';

export const gridSpacing = 'gridSpacing';
export const snapToGrid = 'snapToGrid';
export const directionalDrag = 'directionalDrag';
export const dragOnlyX = 'dragOnlyX';
export const dragOnlyY = 'dragOnlyY';
export const snapTolerance = 'snapTolerance'; //In CMS
export const boundsX = 'boundsX'; //In CMS
export const boundsY = 'boundsY'; //In CMS
export const viewBounds = 'viewBounds';//In CMS

export const dimInch = 'inch';

/** Dimensioning in Inch. */
export const dimFeetAndInch = 'feetAndInch';

/** Dimensioning in Meter. */
export const dimMeter = 'm';

/** Dimensioning in Centi Meter. */
export const dimCentiMeter = 'cm';

/** Dimensioning in Milli Meter. */
export const dimMilliMeter = 'mm';

export const VIEW_TOP = 'topview';
export const VIEW_FRONT = 'frontview';
export const VIEW_RIGHT = 'rightview';
export const VIEW_LEFT = 'leftview';
export const VIEW_ISOMETRY = 'isometryview';

export enum WallTypes{
    STRAIGHT,
    CURVED
}

export const TEXTURE_DEFAULT_REPEAT = 300;
export const defaultWallTexture =
{
    color: '#FFFFFF', repeat: TEXTURE_DEFAULT_REPEAT, normalmap: 'textures/Wall/Brick_Wall_017_SD/Brick_Wall_017_normal.jpg', roughnessmap: 'textures/Wall/Brick_Wall_017_SD/Brick_Wall_017_roughness.jpg', colormap: 'textures/Wall/Brick_Wall_017_SD/Brick_Wall_017_basecolor.jpg', ambientmap: 'textures/Wall/Brick_Wall_017_SD/Brick_Wall_017_ambientOcclusion.jpg', bumpmap: 'textures/Wall/Brick_Wall_017_SD/Brick_Wall_017_height.png'
};
export const defaultFloorTexture =
{
    color: '#FFFFFF', emissive: '#181818', repeat: TEXTURE_DEFAULT_REPEAT, ambientmap: 'textures/Floor/Marble_Tiles_001/Marble_Tiles_001_ambientOcclusion.jpg', colormap: 'textures/Floor/Marble_Tiles_001/Marble_Tiles_001_basecolor.jpg', roughnessmap: 'textures/Floor/Marble_Tiles_001/Marble_Tiles_001_roughness.jpg', normalmap: 'textures/Floor/Marble_Tiles_001/Marble_Tiles_001_normal.jpg'
};

export const TEXTURE_PROPERTY_COLOR = 'color';
export const TEXTURE_NO_PREVIEW = 'textures/NoPreview.jpg';

export var config = { dimUnit: dimCentiMeter, wallHeight: 250, 
    wallThickness: 20, systemUI: false, 
    scale: 1, snapToGrid: true, 
    dragOnlyX: false, dragOnlyY: false, 
    snapTolerance: 50, gridSpacing: 50, 
    directionalDrag: true, 
    boundsX: 500, boundsY: 500, 
    viewBounds: 5000 };

export var wallInformation = { exterior: false, interior: false, midline: true, labels: true, exteriorlabel: 'e:', interiorlabel: 'i:', midlinelabel: 'm:' };


/** 
 * The tolerance in cms between corners, otherwise below this tolerance they will snap together as one corner*/
export const cornerTolerance = 20;

/** Global configuration to customize the whole system.  
 * This is a singleton instance;
 */
export class Configuration extends EventDispatcher {
    private static instance = new Configuration();
    constructor() {
        /** Configuration data loaded from/stored to extern. */
        //		this.data = {dimUnit: dimCentiMeter, wallHeight: 250, wallThickness: 10};
        super();
    }

    static getInstance() {
        if (this.instance === undefined
        || this.instance === null) {
            this.instance = new Configuration();
        }
        return this.instance;
    }

    static getData() {
        //		return {dimUnit: dimCentiMeter,wallHeight: 250, wallThickness: 10};
        return config;
    }

    /** Set a configuration parameter. */
    static setValue(key, value) {
        //		this.data[key] = value;
        config[key] = value;
        // if(key !== viewBounds){
            Configuration.getInstance().dispatchEvent({ type: EVENT_CHANGED, item: Configuration.getInstance(), 'key': key, 'value': value });
        // }        
    }

    /** Get a string configuration parameter. */
    static getStringValue(key) {
        switch (key) {
            case configDimUnit:
                //			return String(this.data[key]);
                return String(Configuration.getData()[key]);
            default:
                throw new Error('Invalid string configuration parameter: ' + key);
        }
    }

    /** Get a numeric configuration parameter. */
    static getNumericValue(key) {
        switch (key) {
            case configSystemUI:
            case configWallHeight:
            case configWallThickness:
            case scale:
            case snapTolerance:
            case gridSpacing:
            case boundsX:
            case boundsY:
            case viewBounds:
                //			return Number(this.data[key]);
                return Number(Configuration.getData()[key]);
            default:
                throw new Error('Invalid numeric configuration parameter: ' + key);
        }
    }

    /** Get a numeric configuration parameter. */
    static getBooleanValue(key) {
        switch (key) {
            case snapToGrid:
            case directionalDrag:
            case dragOnlyX:
            case dragOnlyY:
                return Boolean(Configuration.getData()[key]);
            default:
                throw new Error('Invalid Boolean configuration parameter: ' + key);
        }
    }
}