const fs = require('fs');
const path = require('path');

function patchFile(filePath) {
    if (!fs.existsSync(filePath)) {
        console.error(`Error: ${filePath} does not exist.`);
        return false;
    }

    let fileContent = fs.readFileSync(filePath, 'utf8');

    const regex =
        /const\s+managedHostPath\s*=\s*__dirname\s*\+\s*`\/\$\{targetFramework\}\/\$\{assemblyName\}\.DotNetHost\.dll`/;

    const newContent = fileContent.replace(
        regex,
        `let managedHostPath = __dirname + \`/\${targetFramework}/\${assemblyName}.DotNetHost.dll\`;
managedHostPath = managedHostPath.indexOf('app.asar.unpacked') < 0 ?
  managedHostPath.replace('app.asar', 'app.asar.unpacked') : managedHostPath;`
    );

    if (fileContent !== newContent) {
        fs.writeFileSync(filePath, newContent, 'utf8');
        console.log(`Patched: ${filePath}`);

        return true;
    }

    console.log(`No changes needed for: ${filePath}`);
    return false;
}

// Paths to patch
let platformName = '';
switch (process.platform) {
    case 'win32':
        platformName = 'win';
        break;
    case 'darwin':
        platformName = 'mac';
        break;
    case 'linux':
        platformName = 'linux';
        break;
}
const postBuildPath = path.join(
    __dirname,
    `./../build/${platformName}-unpacked/resources/app.asar.unpacked/node_modules/node-api-dotnet/init.js`
);
console.log('Patching post-build init.js...');
patchFile(postBuildPath);