var fs = require("fs");

if (process.argv.length != 3){
  throw "Needs to have a file to process";
}

var inputFileName = process.argv[2];
var outputFileName;
var input = fs.readFileSync(inputFileName);

function stripComments(comjson){
  var jsopen = "var tmp__object = ";
  var jsmiddle = comjson;
  var semicolon = ";"
  var jsfull = jsopen + jsmiddle + semicolon;
  eval(jsfull);
  return JSON.stringify(tmp__object);
}

function createOutputFileName(inFile){
  if(inFile.slice(-6) != ".comjs"){
     throw "File has invalid extension, must be '.comjs'";
   } else {
     return inFile.slice(0,-6) + ".json";
   }
}

outputFileName = createOutputFileName(inputFileName);
fs.writeFileSync(outputFileName, stripComments(input));