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

export interface ShaderMaterialParameters extends MaterialParameters {
	uniforms?: { [uniform: string]: IUniform } | undefined;
	vertexShader?: string | undefined;
	fragmentShader?: string | undefined;
	linewidth?: number | undefined;
	wireframe?: boolean | undefined;
	wireframeLinewidth?: number | undefined;
	lights?: boolean | undefined;
	clipping?: boolean | undefined;

	extensions?:
		| {
				derivatives?: boolean | undefined;
				fragDepth?: boolean | undefined;
				drawBuffers?: boolean | undefined;
				shaderTextureLOD?: boolean | undefined;
		  }
		| undefined;
	glslVersion?: GLSLVersion | undefined;
}

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;

	/**
	 * @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;

	isShaderMaterial: boolean;

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