import { existsSync } from "jsr:@std/fs/exists";
import { join } from "node:path";

const APPDATA = Deno.env.get('APPDATA');

const Install_PowerShell = () => {
  let ps_module_path = Deno.env.get('PSModulePath');
  if(!ps_module_path) return false;

  ps_module_path = ps_module_path.split(';').find(entry => entry.match(/[\\\/]Documents[\\\/]/));

  if(!ps_module_path) return false;

  const ps_profile_path = join(ps_module_path, '../', 'Microsoft.PowerShell_profile.ps1');

  const profile_append = Deno.readTextFileSync(join(Deno.cwd(), 'lib/cli/commands/install_data', 'profile_append.ps1'));

  let profile_contents = '';
  try {
    profile_contents = Deno.readTextFileSync(ps_profile_path);
  } catch(_) { /**/ }

  profile_contents = profile_contents.replace(/\s+function Run-Viapak[\s\S]+Set-Alias -Name viapak -Value Run-Viapak\s+/, '\n\n');

  if(profile_contents.length) profile_contents += '\n\n';
  profile_contents += profile_append;

  profile_contents = profile_contents.replace(/^[\n\s]+/, '').replace(/\n{2,}/, '\n').replace(/\n{2,}$/, '\n');

  Deno.writeTextFileSync(ps_profile_path, profile_append, {
    create: true
  })

  return true;
}

const InstallCMD = () => {
  let PATH = Deno.env.get('PATH');
  if(!PATH || !APPDATA) return false; // Something would need to be horribly wrong!

  const viapak_path = join(APPDATA, '.viapak');

  if(!existsSync(viapak_path)) {
    Deno.mkdirSync(viapak_path);
  }

  if(!PATH.includes(viapak_path)) {
    console.log('NOT IN PATH!');

    console.log(PATH);

    // PATH = PATH.concat(';', viapak_path);

    // const result = spawnSync('setx', ['PATH', PATH]);

    // // STDOUT
    // const stdOut = result.stdout.toString();
    // console.log(stdOut);

    // // STDERR
    // const stdErr =  result.stderr.toString();

    // if(stdErr === '') {
    //     ENVIRONMENT_MODIFIED = true;
    // } else {
    //     console.error(`ERROR: ${stdErr}`);
    // }
  }

  const cmd_contents = Deno.readTextFileSync(join(Deno.cwd(), 'lib/cli/commands/install_data', 'viapak.cmd'));

  Deno.writeTextFileSync(join(viapak_path, 'viapak.cmd'), cmd_contents);

  return false;
}

let ENVIRONMENT_MODIFIED = false;

const powershell = Install_PowerShell();
const cmd = InstallCMD();

export {
  powershell,
  cmd,
}