"use strict";

const HoleMaterialGame = (function(){

    const HoleMaterialGame = function(hollow_bond){

        const self = this;
        const cache = {};

        const themes_source = (hollow_bond && hollow_bond.themes) 
            ? hollow_bond.themes 
            : new ThemeManager(hollow_bond);

        this.get_material = (theme_key = null) => {

            const key = theme_key || themes_source.current_theme || "level_0";

            if(cache[key]){
                return cache[key];
            }

            const theme = themes_source.get(key);
            const shader_def = (theme && theme.shaders && theme.shaders.hole) 
                ? theme.shaders.hole 
                : (theme && theme.shaders && theme.shaders.walls);

            cache[key] = new THREE.ShaderMaterial({
                vertexShader: shader_def.vertex,
                fragmentShader: shader_def.fragment,
                side: THREE.DoubleSide
            });

            return cache[key];
        };

        this.reset = () => {
            for(const key in cache){
                if(cache[key] && cache[key].dispose){
                    cache[key].dispose();
                }
            }
        };

    };

    return HoleMaterialGame;
})();