#!/usr/bin/env node

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

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

const argv = minimist(process.argv.slice(2), {
  string: ['config', 'token'],
  boolean: ['help', 'debug', 'base64'],
  alias: {
    help: 'h',
    config: 'c',
    debug: 'd',
    base64: 'b',
    token: 't'
  }
});

const subcommand = argv._[0];

// options
const help = () => {
  console.log(
    `
  ${chalk.bold(`${logo} now secrets`)} <ls | add | rename | rm> <secret>

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

    -h, --help              Output usage information
    -b, --base64            Treat value as base64-encoded
    -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

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

  ${chalk.gray('–')} Lists all your secrets:

    ${chalk.cyan('$ now secrets ls')}

  ${chalk.gray('–')} Adds a new secret:

    ${chalk.cyan('$ now secrets add my-secret "my value"')}

    ${chalk.gray('–')} Once added, a secret's value can't be retrieved in plaintext anymore
    ${chalk.gray('–')} If the secret's value is more than one word, wrap it in quotes
    ${chalk.gray('–')} Actually, when in doubt, wrap your value in quotes

  ${chalk.gray('–')} Exposes a secret as an env variable:

    ${chalk.cyan(`$ now -e MY_SECRET=${chalk.bold('@my-secret')}`)}

    Notice the ${chalk.cyan.bold('`@`')} symbol which makes the value a secret reference.

  ${chalk.gray('–')} Renames a secret:

    ${chalk.cyan(`$ now secrets rename my-secret my-renamed-secret`)}

  ${chalk.gray('–')} Removes a secret:

    ${chalk.cyan(`$ now secrets rm my-secret`)}
`
  );
};

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

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

if (argv.help || !subcommand) {
  help();
  exit(0);
} else {
  const config = cfg.read();

  Promise.resolve(argv.token || config.token || login(apiUrl))
    .then(async token => {
      try {
        await run(token);
      } catch (err) {
        handleError(err);
        exit(1);
      }
    })
    .catch(e => {
      error(`Authentication error – ${e.message}`);
      exit(1);
    });
}

async function run(token) {
  const secrets = new NowSecrets(apiUrl, token, { debug });
  const args = argv._.slice(1);
  const start = Date.now();

  if (subcommand === 'ls' || subcommand === 'list') {
    if (args.length !== 0) {
      error(
        `Invalid number of arguments. Usage: ${chalk.cyan('`now secret ls`')}`
      );
      return exit(1);
    }

    const list = await secrets.ls();
    const elapsed = ms(new Date() - start);

    console.log(
      `> ${list.length} secret${list.length === 1 ? '' : 's'} found ${chalk.gray(`[${elapsed}]`)}`
    );

    if (list.length > 0) {
      const cur = Date.now();
      const header = [['', 'id', 'name', 'created'].map(s => chalk.dim(s))];
      const out = table(
        header.concat(
          list.map(secret => {
            return [
              '',
              secret.uid,
              chalk.bold(secret.name),
              chalk.gray(ms(cur - new Date(secret.created)) + ' ago')
            ];
          })
        ),
        {
          align: ['l', 'r', 'l', 'l'],
          hsep: ' '.repeat(2),
          stringLength: strlen
        }
      );

      if (out) {
        console.log('\n' + out + '\n');
      }
    }
    return secrets.close();
  }

  if (subcommand === 'rm' || subcommand === 'remove') {
    if (args.length !== 1) {
      error(
        `Invalid number of arguments. Usage: ${chalk.cyan('`now secret rm <id | name>`')}`
      );
      return exit(1);
    }
    const list = await secrets.ls();
    const theSecret = list.filter(secret => {
      return secret.uid === args[0] || secret.name === args[0];
    })[0];

    if (theSecret) {
      const yes = await readConfirmation(theSecret);
      if (!yes) {
        error('User abort');
        return exit(0);
      }
    } else {
      error(`No secret found by id or name "${args[0]}"`);
      return exit(1);
    }

    const secret = await secrets.rm(args[0]);
    const elapsed = ms(new Date() - start);
    console.log(
      `${chalk.cyan('> Success!')} Secret ${chalk.bold(secret.name)} ${chalk.gray(`(${secret.uid})`)} removed ${chalk.gray(`[${elapsed}]`)}`
    );
    return secrets.close();
  }

  if (subcommand === 'rename') {
    if (args.length !== 2) {
      error(
        `Invalid number of arguments. Usage: ${chalk.cyan('`now secret rename <old-name> <new-name>`')}`
      );
      return exit(1);
    }
    const secret = await secrets.rename(args[0], args[1]);
    const elapsed = ms(new Date() - start);
    console.log(
      `${chalk.cyan('> Success!')} Secret ${chalk.bold(secret.oldName)} ${chalk.gray(`(${secret.uid})`)} renamed to ${chalk.bold(args[1])} ${chalk.gray(`[${elapsed}]`)}`
    );
    return secrets.close();
  }

  if (subcommand === 'add' || subcommand === 'set') {
    if (args.length !== 2) {
      error(
        `Invalid number of arguments. Usage: ${chalk.cyan('`now secret add <name> <value>`')}`
      );

      if (args.length > 2) {
        const example = chalk.cyan(`$ now secret add ${args[0]}`);
        console.log(
          `> If your secret has spaces, make sure to wrap it in quotes. Example: \n  ${example} `
        );
      }

      return exit(1);
    }

    const [name, value_] = args;
    let value;

    if (argv.base64) {
      value = { base64: value_ };
    } else {
      value = value_;
    }

    const secret = await secrets.add(name, value);
    const elapsed = ms(new Date() - start);

    console.log(
      `${chalk.cyan('> Success!')} Secret ${chalk.bold(name.toLowerCase())} ${chalk.gray(`(${secret.uid})`)} added ${chalk.gray(`[${elapsed}]`)}`
    );
    return secrets.close();
  }

  error('Please specify a valid subcommand: ls | add | rename | rm');
  help();
  exit(1);
}

process.on('uncaughtException', err => {
  handleError(err);
  exit(1);
});

function readConfirmation(secret) {
  return new Promise(resolve => {
    const time = chalk.gray(ms(new Date() - new Date(secret.created)) + ' ago');
    const tbl = table([[secret.uid, chalk.bold(secret.name), time]], {
      align: ['l', 'r', 'l'],
      hsep: ' '.repeat(6)
    });

    process.stdout.write(
      '> The following secret will be removed permanently\n'
    );
    process.stdout.write('  ' + tbl + '\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().toLowerCase() === 'y');
      })
      .resume();
  });
}