import { IUniform } from '../renderers/shaders/UniformsLib';
import { MaterialParameters, Material } from './Material';
import { GLSLVersion } from '../constants';

export interface ShaderMaterialParameters extends MaterialParameters {
	uniforms?: { [uniform: string]: IUniform };
	vertexShader?: string;
	fragmentShader?: string;
	linewidth?: number;
	wireframe?: boolean;
	wireframeLinewidth?: number;
	lights?: boolean;
	clipping?: boolean;
	skinning?: boolean;
	morphTargets?: boolean;
	morphNormals?: boolean;
	extensions?: {
		derivatives?: boolean;
		fragDepth?: boolean;
		drawBuffers?: boolean;
		shaderTextureLOD?: boolean;
	};
	glslVersion?: GLSLVersion;
}

export class ShaderMaterial extends Material {

	constructor( parameters?: ShaderMaterialParameters );

	/**
	 * @default 'ShaderMaterial'
	 */
	type: string;

	/**
	 * @default {}
	 */
	defines: { [key: string]: any };

	/**
	 * @default {}
	 */
	uniforms: { [uniform: string]: IUniform };
	vertexShader: string;
	fragmentShader: string;

	/**
	 * @default 1
	 */
	linewidth: number;

	/**
	 * @default false
	 */
	wireframe: boolean;

	/**
	 * @default 1
	 */
	wireframeLinewidth: number;

	/**
	 * @default false
	 */
	fog: boolean;

	/**
	 * @default false
	 */
	lights: boolean;

	/**
	 * @default false
	 */
	clipping: boolean;

	/**
	 * @default false
	 */
	skinning: boolean;

	/**
	 * @default false
	 */
	morphTargets: boolean;

	/**
	 * @default false
	 */
	morphNormals: boolean;
	/**
	 * @deprecated Use {@link ShaderMaterial#extensions.derivatives extensions.derivatives} instead.
	 */
	derivatives: any;

	/**
	 * @default { derivatives: false, fragDepth: false, drawBuffers: false, shaderTextureLOD: false }
	 */
	extensions: {
		derivatives: boolean;
		fragDepth: boolean;
		drawBuffers: boolean;
		shaderTextureLOD: boolean;
	};

	/**
	 * @default { 'color': [ 1, 1, 1 ], 'uv': [ 0, 0 ], 'uv2': [ 0, 0 ] }
	 */
	defaultAttributeValues: any;

	/**
	 * @default undefined
	 */
	index0AttributeName: string | undefined;

	/**
	 * @default false
	 */
	uniformsNeedUpdate: boolean;

	/**
	 * @default null
	 */
	glslVersion: GLSLVersion | null;

	setValues( parameters: ShaderMaterialParameters ): void;
	toJSON( meta: any ): any;

}