const { applyPatch } = require('diff');
const fs = require('fs');
const readline = require('readline');

const outPath = './PackageSources/html_ui/Pages/VCockpit/Instruments/aircraft_efb/KH_TFDi_MD11_efb';

let file1Contents = fs.readFileSync('./EFB/efb.js').toString();
let patch = fs.readFileSync('./EFB/efb-js.patch').toString();
let patchedFile = applyPatch(file1Contents, patch);
fs.writeFileSync(`${outPath}/efb.js`, patchedFile);

file1Contents = fs.readFileSync('./EFB/efb.index.js').toString();
patch = fs.readFileSync('./EFB/efb-index-js.patch').toString();
patchedFile = applyPatch(file1Contents, patch);
fs.writeFileSync(`${outPath}/efb.index.js`, patchedFile);

file1Contents = fs.readFileSync('./EFB/efb.html').toString();
patch = fs.readFileSync('./EFB/efb-html.patch').toString();
patchedFile = applyPatch(file1Contents, patch);
fs.writeFileSync(`${outPath}/efb.html`, patchedFile);

var output = '';
var lineReader = readline.createInterface({
  input: fs.createReadStream(`${outPath}/App.js`),
});
lineReader.on('line', (line) => {
  if (line.startsWith('import')) {
    output += '// ' + line + '\n';
  } else if (line.startsWith('export')) {
    output += 'window.KH_LM = App;\n';
  } else {
    output += line + '\n';
  }
});
lineReader.on('close', () => {
  fs.writeFile(`${outPath}/App.js`, output, (err) => {
    if (err) console.log(err);
    console.log('Import/Export removed.');
  });
});