#!/usr/bin/env node

require('lego-colorful').colorful();

var join = require('path').join;
var exists = require('fs').existsSync;
var program = require('commander');
var spawn = require('win-spawn');

var run = require('../lib/utils/run');
var pkg = require('../package');

program
  .version(pkg.version, '-v, --version')
  .usage('<command> [options]')
  .on('--help', printHelp)
  .on('-h', printHelp)
  .parse(process.argv);

var subcmd = program.args[0];
var args = process.argv.slice(3);

var acronym = {
  "i" : "install",
  "un" : "uninstall",
  "se" : "search",
  "up" : "update"
}

if (!subcmd) {
  program.help();
} else if (subcmd === 'help') {
  var helpcmd = program.args[1];
  var bin = executable(helpcmd);
  if (!helpcmd || !bin) {
    process.stdout.write(program.helpInformation());
    program.emit('--help');
    process.exit();
  }
  spawn(bin, ['--help'], {stdio: 'inherit', customFds: [0, 1, 2]});
} else {
  var bin = executable(subcmd);
  if (bin) {
    run.record(subcmd);
    spawn(bin, args, {stdio: 'inherit', customFds: [0, 1, 2]});
  } else {
    program.help();
  }
}

function printHelp() {
  console.log('  System Commands:'.to.bold.magenta.color);
  console.log();
  console.log('    config         configuration for lego');
  console.log('    login          login your account');
  console.log('    completion     output completion bash script');
  console.log();
  console.log('  Package Commands:'.to.bold.green.color);
  console.log();
  console.log('    init           initialize a package');
  console.log('    install        install a package');
  console.log('    publish        publish a package');
  console.log('    unpublish      unpublish a package');
  console.log('    ls             show dependencies tree');
  console.log('    info           information of a package');
  console.log('    search         search packages');
  console.log('    test           test a package');
  console.log('    doc            documentation manager');
  console.log('    build          build a package');
  console.log();
}


function executable(subcmd) {
  subcmd = acronym[subcmd] || subcmd;
  var file = join(__dirname, 'lego-' + subcmd);
  if (exists(file)) {
    return file;
  }
}