import * as plugins from '../npmci.plugins';
import * as npmciConfig from '../npmci.config';
import { bash, bashNoError, nvmAvailable, yarnAvailable } from '../npmci.bash';

/**
 * handle cli input
 * @param argvArg
 */
export let handleCli = async argvArg => {
  if (argvArg._.length >= 3) {
    let action: string = argvArg._[1];
    switch (action) {
      case 'install':
        await install(argvArg._[2]);
        break;
      default:
        plugins.beautylog.error(`>>npmci node ...<< action >>${action}<< not supported`);
        process.exit(1);
    }
  } else {
    plugins.beautylog.error(
      `>>npmci node ...<< cli arguments invalid... Please read the documentation.`
    );
    process.exit(1);
  }
};

/**
 * Install a specific version of node
 * @param versionArg
 */
export let install = async versionArg => {
  plugins.beautylog.log(`now installing node version ${versionArg}`);
  let version: string;
  if (versionArg === 'stable') {
    version = 'stable';
  } else if (versionArg === 'lts') {
    version = '8';
  } else if (versionArg === 'legacy') {
    version = '8';
  } else {
    version = versionArg;
  }
  if (await nvmAvailable.promise) {
    await bash(`nvm install ${version} && nvm alias default ${version}`);
    plugins.beautylog.success(`Node version ${version} successfully installed!`);
  } else {
    plugins.beautylog.warn('Nvm not in path so staying at installed node version!');
  }
  await bash('node -v');
  await bash('npm -v');
  // lets look for further config
  await npmciConfig.getConfig().then(async configArg => {
    plugins.beautylog.log('Now checking for needed global npm tools...');
    for (let npmTool of configArg.npmGlobalTools) {
      plugins.beautylog.info(`Checking for global "${npmTool}"`);
      let whichOutput: string = await bashNoError(`which ${npmTool}`);
      let toolAvailable: boolean = !(/not\sfound/.test(whichOutput) || whichOutput === '');
      if (toolAvailable) {
        plugins.beautylog.log(`Tool ${npmTool} is available`);
      } else {
        plugins.beautylog.info(`globally installing ${npmTool} from npm`);
        if (await yarnAvailable.promise) {
          await bash(`yarn global add ${npmTool}`);
        } else {
          await bash(`npm install ${npmTool} -q -g`);
        }
      }
    }
    plugins.beautylog.success('all global npm tools specified in npmextra.json are now available!');
  });
};