#!/usr/bin/env node
import * as path from 'path';
import readline from 'readline';
import yargs from 'yargs';

import { loadEnvironment } from '@squeebot/core/lib/core';

import { Squeebot } from './core';
import { SqueebotCLI } from './cli';

const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
});

async function start(argv: any): Promise<void> {
  if (!argv.environment) {
    throw new Error('Environment file is missing.');
  }

  let root;
  if (argv.root) {
    root = path.resolve(argv.root);
  }

  const env = await loadEnvironment(argv.environment, root);

  // Change working directory to the environment
  process.chdir(env.path as string);

  // Create and initialize the Squeebot instance
  const sb = new Squeebot(env);
  await sb.initialize(argv.e !== true);

  // Create a CLI if interactive mode is enabled
  if (argv.i === true) {
    const sbrl = new SqueebotCLI(sb);
    sbrl.attach(rl);
  }

  sb.attachReadline(rl);
}

yargs.scriptName('squeebotd')
  .command('$0 [environment]', 'start Squeebot daemon', (y) => {
    y.positional('environment', {
      demandOption: 'The environment file is mandatory.',
      describe: 'The environment file to use, in json format',
    })
      .option('r', {
        alias: 'root',
        describe: 'Change the root directory of execution to differ from the one in your environment file',
        nargs: 1,
        type: 'string',
      })
      .option('e', {
        alias: 'no-enable',
        describe: 'Do not automatically execute enabled plugins on startup',
        type: 'boolean',
      })
      .option('i', {
        alias: 'interactive',
        describe: 'Enable built-in command line interface',
        type: 'boolean',
      });
  });

start(yargs.argv).catch((e) => console.error(e.stack));