#!/usr/bin/env node
const dogapi = require('..');
const json = require('../lib/json');
const minimist = require('minimist');
const rc = require('rc');
const EOL = require('os').EOL;

const config = rc('dogapi', {
  api_key: null,
  app_key: null
});
dogapi.initialize(config);

let usage = [
  'Usage:',
  '  dogapi --help',
  '  dogapi <command> --help',
  '  dogapi --version',
  '  dogapi now',
  '  dogapi past <seconds-ago>',
  '  dogapi future <seconds-ahead>'
];
let help = [];
for (const key in dogapi) {
  if (!dogapi.hasOwnProperty(key)) {
    continue;
  } else if (
    !dogapi[key].hasOwnProperty('getUsage') ||
    typeof dogapi[key].getUsage !== 'function'
  ) {
    continue;
  } else if (
    !dogapi[key].hasOwnProperty('handleCli') ||
    typeof dogapi[key].handleCli !== 'function'
  ) {
    continue;
  }
  usage = usage.concat(dogapi[key].getUsage());

  if (dogapi[key].hasOwnProperty('getHelp') && typeof dogapi[key].getHelp === 'function') {
    help = help.concat([''], dogapi[key].getHelp());
  }
}

usage = usage.concat(help);
usage = usage.join(EOL);
const args = minimist(process.argv);

let command = args._[2];
const subcommand = args._[3];

// this is the one unusual case
if (command === 'servicecheck') {
  command = 'serviceCheck';
}

if (command === 'now') {
  console.log(dogapi.now());
} else if (command === 'past' && args._.length > 3) {
  console.log(dogapi.now() - parseInt(args._[args._.length - 1]));
} else if (command === 'future' && args._.length > 3) {
  console.log(dogapi.now() + parseInt(args._[args._.length - 1]));
} else if (dogapi.hasOwnProperty(command)) {
  if (subcommand) {
    dogapi[command].handleCli(subcommand, args, function(err, res) {
      if (err) {
        console.error(json.stringify(err, null, '  '));
        process.exit(1);
      } else {
        if (res === '') {
          res = 'success';
        }
        console.log(json.stringify(res, null, '  '));
      }
    });
  } else {
    let commandUsage = ['Usage:'].concat(dogapi[command].getUsage());
    if (
      dogapi[command].hasOwnProperty('getHelp') &&
      typeof dogapi[command].getHelp === 'function'
    ) {
      commandUsage = commandUsage.concat([EOL], dogapi[command].getHelp());
    }
    console.log(commandUsage.join(EOL).replace(/\$\{command\}/g, '  dogapi'));
  }
} else if (args.version) {
  console.log(require('../package.json').version);
} else {
  console.log(usage);
}