/*

	Copyright (c) 2020, 2023, The Unified Company.

	This code is part of Unify.

	This program is free software; you can redistribute it and/or modify
	it under the terms of the ESA Software Community License - Strong Copyleft,

	https://unifyjs.org 

*/


const fs 				= require('fs');

const util 				= require('util');

const exec 				= util.promisify( require('child_process').exec );


exports.gpp = class gpp{

	batchSize 		= 70;

	execPromises 	= new Array();



	constructor() {

	}

	async initialise() {

		this.instance = await new factory();

	}

	createBatchesDirectory() {

		if( !fs.existsSync( "./framework/cache/platforms/batches/" )  ) {

			fs.mkdirSync("./framework/cache/platforms/batches/");

		}

	}

	async convert( inputFiles, i ) {

		this.createBatchesDirectory();


		var file 				= path.resolve( "./framework/cache/platforms/batches/" + i + ".json");

		var n 					= i * this.batchSize;

		var inputFilesSliced	= inputFiles.slice( n, this.batchSize + n );

		var inputFilesJoined	= inputFilesSliced.join("\n");


		fs.writeFileSync( file, JSON.stringify( inputFilesJoined ) );

		await this.spawnBatch( file, i );

		return true;

	}

	async spawnBatch( file, i ) {

		var cWrapper 	= path.resolve("./framework/node_modules/node-gpp/instanceChild.js");

		var args 		= new Array( cWrapper, "file=" + file, "index=" + i );

		var defaults 	= { file:file, env: process.env };

		var execPromise = exec("node " + cWrapper + " file=" + file + " index=" + i );

		this.execPromises.push(execPromise);

	}

}