index

#! /usr/bin/env node

/*
 * Core deps
 */
var spawnSync = require('child_process').spawnSync;
var repl = require('repl');
var fs = require('fs');
var path= require('path');

/*
 * Mod deps
 */
var argv = require('minimist')(process.argv.slice(2));

var filters = ['h', 'help', 'install'];
var mod = isTest() ? module.exports : {};

function isTest() {
  return process.env.NODE_ENV === 'test';
}

var getopts = mod.getopts = function(argv, filter) {
  var opts = Object.keys(argv).filter(function(arg) {
    return !(filter.some(function(val) {
      return arg == val;
    }));
  });
  return opts.reduce(function(acc, opt) {
    acc[opt] = argv[opt];
    return acc;
  }, {});
};

var assign = mod.assign = function(opts) {
  return opts.reduce(function(acc, opt) {
    acc[opt.replace('-', '_')] = opt;
    return acc;
  }, {});
};

var merge = mod.merge = function() {
  var args = Array.prototype.slice.call(arguments);
  return args.reduce(function(acc, arg) {
    Object.keys(arg).forEach(function(ar) {
      acc[ar] = arg[ar];
      return acc;
    });
    return acc;
  }, {});
};

function installAssign(varname, optsObj) {
  try {
    var install = spawnSync('npm', ['install', optsObj[varname]]);
    console.log(install.output.toString()); // eslint-disable-line
  } catch (e) {
    console.log('Failed to install', e); // eslint-disable-line
  }
  global[varname] = require(path.resolve(process.cwd(), 'node_modules', optsObj[varname]));
}

function gAssign(varname, optsObj) {
  global[varname] = require(path.resolve(process.cwd(), 'node_modules', optsObj[varname]));
}

function init(argv) {
  // Grunt works
  var hasInstall = Boolean(argv.install);
  var optsObj = getopts(argv || [], filters);

  var namedOptsObj = getopts(optsObj, ['_']);
  var selfOptsObj = assign(optsObj._ || []);
  optsObj = merge(selfOptsObj, namedOptsObj);

  var ops = hasInstall ? installAssign : gAssign;

  Object.keys(optsObj).forEach(function(key) {
    ops(key, optsObj);
  });
  return true;
}

function choices(choice) {
  /* eslint-disable */
  switch (choice) {
    case true:
      fs.createReadStream(path.resolve(__dirname,'./README.md')).pipe(process.stdout);
      break;
    default:
      isTest() || (init(argv) && repl.start('>'));
  }
  /* eslint-enable */
}

(function run() {
  choices(argv.h || argv.help);
}());