'use strict';

const utils = require('../../core/utils');

const kernelRunShortcut = require('../kernel-run-shortcut');

function removeFnNoise(fn) {

if (/^function /.test(fn)) {

fn = fn.substring(9);

}

return fn.replace(/[_]typeof/g, 'typeof');

}

function removeNoise(str) {

return str.replace(/[_]typeof/g, 'typeof');

}

module.exports = function(cpuKernel, name) {

return `() => {

${ kernelRunShortcut.toString() };

const utils = {

allPropertiesOf: ${ removeNoise(utils.allPropertiesOf.toString()) },

clone: ${ removeNoise(utils.clone.toString()) },

checkOutput: ${ removeNoise(utils.checkOutput.toString()) }

};

const Utils = utils;

class ${ name || 'Kernel' } {

constructor() {

this.argumentsLength = 0;

this._canvas = null;

this._webGl = null;

this.built = false;

this.program = null;

this.paramNames = ${ JSON.stringify(cpuKernel.paramNames) };

this.paramTypes = ${ JSON.stringify(cpuKernel.paramTypes) };

this.texSize = ${ JSON.stringify(cpuKernel.texSize) };

this.output = ${ JSON.stringify(cpuKernel.output) };

this._kernelString = \`${ cpuKernel._kernelString }\`;

this.output = ${ JSON.stringify(cpuKernel.output) };

this.run = function() {

this.run = null;

this.build();

return this.run.apply(this, arguments);

}.bind(this);

this.thread = {

x: 0,

y: 0,

z: 0

};

}

setCanvas(canvas) { this._canvas = canvas; return this; }

setWebGl(webGl) { this._webGl = webGl; return this; }

${ removeFnNoise(cpuKernel.build.toString()) }

${ removeFnNoise(cpuKernel.setupParams.toString()) }

${ removeFnNoise(cpuKernel.setupConstants.toString()) }

run () { ${ cpuKernel.kernelString } }

getKernelString() { return this._kernelString; }

${ removeFnNoise(cpuKernel.validateOptions.toString()) }

};

return kernelRunShortcut(new Kernel());

};`;

};