#!/usr/bin/env node

if (process.argv.length < 4) {
  console.error("Usage: toSwift SRC DST");
  process.exit(1);
}

var fs = require("fs");

let fileSrc = process.argv[2];
let fileDst = process.argv[3];

let replacements = {
  "function": "func",
  "number": "Float",
  "):": ") ->",
};

console.log(`Converting '${fileSrc}' to '${fileDst}'`);

var linesDst = [];
let linesSrc = fs.readFileSync(fileSrc).toString().split(/\r?\n/);
for (let i in linesSrc) {
  let ln = linesSrc[i];
  linesDst.push(convert(ln));
}

let contentsDst = linesDst.join("\r\n");
fs.writeFileSync(fileDst, contentsDst);


// Functions making decisions.

function convert(line) {
  var result = line;
  for (let src in replacements) {
    let dst = replacements[src];
    result = result.replace(src, dst);
  }
  return result;
}