#!/usr/bin/env node

import minimist from 'minimist';
import chalk from 'chalk';
import ms from 'ms';
import table from 'text-table';
import Now from '../lib';
import login from '../lib/login';
import * as cfg from '../lib/cfg';
import { handleError, error } from '../lib/error';

const argv = minimist(process.argv.slice(2), {
  boolean: ['help', 'debug', 'hard'],
  alias: {
    help: 'h',
    debug: 'd'
  }
});

const deploymentId = argv._[0];

// options
const help = () => {
  console.log(`
  ${chalk.bold('𝚫 now remove')} [deploymentId]

  ${chalk.dim('Options:')}

    -h, --help   output usage information
    -d, --debug  debug mode [off]

  ${chalk.dim('Examples:')}

  ${chalk.gray('–')} Remove a deployment identified by ${chalk.dim('`deploymentId`')}:

    ${chalk.cyan('$ now rm deploymentId')}

  ${chalk.dim('Alias:')} rm
`);
};

if (argv.help || !deploymentId) {
  help();
  process.exit(0);
}

// options
const debug = argv.debug;
const apiUrl = argv.url || 'https://api.zeit.co';
const hard = argv.hard || false;

const config = cfg.read();

function readConfirmation (depl, aliases) {
  return new Promise((resolve, reject) => {
    const time = chalk.gray(ms(new Date() - depl.created) + ' ago');
    const tbl = table(
      [[depl.uid, chalk.underline(`https://${depl.url}`), time]],
      { align: ['l', 'r', 'l'], hsep: ' '.repeat(6) }
    );

    process.stdout.write('> The following deployment will be removed permanently\n');
    process.stdout.write('  ' + tbl + '\n');

    if (aliases.length) {
      process.stdout.write(`> ${chalk.yellow('Warning!')} This deployment's `
      + `${chalk.bold(aliases.length + ' alias' + (aliases.length > 1 ? 'es': ''))} `
      + `will be removed. Run ${chalk.dim('`now alias ls`')} to list.\n`);
    }

    process.stdout.write(`${chalk.bold.red('> Are you sure?')} ${chalk.gray('[yN] ')}`);

    process.stdin.on('data', (d) => {
      process.stdin.pause();
      resolve(d.toString().trim());
    }).resume();
  });
}

Promise.resolve(config.token || login(apiUrl))
.then(async (token) => {
  try {
    await remove(token);
  } catch (err) {
    error(`Unknown error: ${err.stack}`);
    process.exit(1);
  }
})
.catch((e) => {
  error(`Authentication error – ${e.message}`);
  process.exit(1);
});

async function remove (token) {
  const now = new Now(apiUrl, token, { debug });

  const deployments = await now.list();
  const depl = deployments.find((d) => d.uid === deploymentId);
  if (null != deploymentId && !depl) {
    error(`Could not find a deployment by ${chalk.bold(`"${deploymentId}"`)}. Run ${chalk.dim(`\`now ls\``)} to list.`);
    return process.exit(1);
  }
  const aliases = await now.listAliases(depl.uid);

  try {
    const confirmation = (await readConfirmation(depl, aliases)).toLowerCase();
    if ('y' !== confirmation && 'yes' !== confirmation) {
      console.log('\n> Aborted');
      process.exit(0);
    }

    const start = new Date();
    await now.remove(deploymentId, { hard });
    const elapsed = ms(new Date() - start);
    console.log(`${chalk.cyan('> Success!')} Deployment ${chalk.bold(deploymentId)} removed [${elapsed}]`);
  } catch (err) {
    handleError(err);
    process.exit(1);
  }

  now.close();
}