#!/usr/bin/env node

// Packages
const minimist = require('minimist');
const chalk = require('chalk');
const ms = require('ms');
const table = require('text-table');
const isURL = require('is-url');

// Ours
const Now = require('../lib');
const login = require('../lib/login');
const cfg = require('../lib/cfg');
const { handleError, error } = require('../lib/error');
const logo = require('../lib/utils/output/logo');

const argv = minimist(process.argv.slice(2), {
  string: ['config', 'token'],
  boolean: ['help', 'debug', 'hard', 'yes'],
  alias: {
    help: 'h',
    config: 'c',
    debug: 'd',
    token: 't',
    yes: 'y'
  }
});

const ids = argv._;

// Options
const help = () => {
  console.log(
    `
  ${chalk.bold(`${logo} now remove`)} deploymentId|deploymentName [...deploymentId|deploymentName]

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

    -h, --help              Output usage information
    -c ${chalk.bold.underline('FILE')}, --config=${chalk.bold.underline('FILE')}  Config file
    -d, --debug             Debug mode [off]
    -t ${chalk.bold.underline('TOKEN')}, --token=${chalk.bold.underline('TOKEN')} Login token
    -y, --yes               Skip confirmation

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

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

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

  ${chalk.gray('–')} Remove all deployments with name ${chalk.dim('`my-app`')}:

    ${chalk.cyan('$ now rm my-app')}

  ${chalk.gray('–')} Remove two deployments with IDs ${chalk.dim('`eyWt6zuSdeus`')} and ${chalk.dim('`uWHoA9RQ1d1o`')}:

    ${chalk.cyan('$ now rm eyWt6zuSdeus uWHoA9RQ1d1o')}

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

if (argv.help || ids.length === 0) {
  help();
  process.exit(0);
}

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

if (argv.config) {
  cfg.setConfigFile(argv.config);
}

const config = cfg.read();

function readConfirmation(matches) {
  return new Promise(resolve => {
    process.stdout.write(
      `> The following deployment${matches.length === 1 ? '' : 's'} will be removed permanently:\n`
    );

    const tbl = table(
      matches.map(depl => {
        const time = chalk.gray(ms(new Date() - depl.created) + ' ago');
        const url = depl.url ? chalk.underline(`https://${depl.url}`) : '';
        return [depl.uid, url, time];
      }),
      { align: ['l', 'r', 'l'], hsep: ' '.repeat(6) }
    );
    process.stdout.write(tbl + '\n');

    for (const depl of matches) {
      for (const alias of depl.aliases) {
        process.stdout.write(
          `> ${chalk.yellow('Warning!')} Deployment ${chalk.bold(depl.uid)} ` +
            `is an alias for ${chalk.underline(`https://${alias.alias}`)} and will be removed.\n`
        );
      }
    }

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

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

Promise.resolve(argv.token || config.token || login(apiUrl))
  .then(async token => {
    try {
      await remove(token);
    } catch (err) {
      error(`Unknown error: ${err}\n${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 matches = deployments.filter(d => {
    return ids.find(id => {
      // Normalize URL by removing slash from the end
      if (isURL(id) && id.slice(-1) === '/') {
        id = id.slice(0, -1);
      }

      // `url` should match the hostname of the deployment
      let u = id.replace(/^https:\/\//i, '');

      if (u.indexOf('.') === -1) {
        // `.now.sh` domain is implied if just the subdomain is given
        u += '.now.sh';
      }

      return d.uid === id || d.name === id || d.url === u;
    });
  });

  if (matches.length === 0) {
    error(
      `Could not find any deployments matching ${ids
        .map(id => chalk.bold(`"${id}"`))
        .join(', ')}. Run ${chalk.dim(`\`now ls\``)} to list.`
    );
    return process.exit(1);
  }

  const aliases = await Promise.all(
    matches.map(depl => now.listAliases(depl.uid))
  );
  for (let i = 0; i < matches.length; i++) {
    matches[i].aliases = aliases[i];
  }

  try {
    if (!skipConfirmation) {
      const confirmation = (await readConfirmation(matches)).toLowerCase();

      if (confirmation !== 'y' && confirmation !== 'yes') {
        console.log('\n> Aborted');
        process.exit(0);
      }
    }

    const start = new Date();

    await Promise.all(matches.map(depl => now.remove(depl.uid, { hard })));

    const elapsed = ms(new Date() - start);
    console.log(`${chalk.cyan('> Success!')} [${elapsed}]`);
    console.log(
      table(
        matches.map(depl => {
          return [`Deployment ${chalk.bold(depl.uid)} removed`];
        })
      )
    );
  } catch (err) {
    handleError(err);
    process.exit(1);
  }

  now.close();
}