'use strict';

var fs = require('fs')

, path = require('path')
, browserify = require('browserify')
, uglify = require('uglify-js');

var pkg = process.argv

, standalone = process.argv[3]
, compress = process.argv[4];

var packageDir = path.join(__dirname, '..'); if (pkg != '.') packageDir = path.join(packageDir, 'node_modules', pkg);

var json = require(path.join(packageDir, 'package.json'));

var distDir = path.join(__dirname, '..', 'dist'); if (!fs.existsSync(distDir)) fs.mkdirSync(distDir);

var bOpts = {}; if (standalone) bOpts.standalone = standalone;

browserify(bOpts) .require(path.join(packageDir, json.main), {expose: json.name}) .bundle(function (err, buf) {

if (err) {
  console.error('browserify error:', err);
  process.exit(1);
}

var outputFile = path.join(distDir, json.name);
var uglifyOpts = {
  warnings: true,
  compress: {},
  output: {
    preamble: '/* ' + json.name + ' ' + json.version + ': ' + json.description + ' */'
  }
};
if (compress) {
  var compressOpts = compress.split(',');
  for (var i=0, il = compressOpts.length; i<il; ++i) {
    var pair = compressOpts[i].split('=');
    uglifyOpts.compress[pair[0]] = pair.length < 1 || pair[1] != 'false';
  }
}
if (standalone) {
  uglifyOpts.sourceMap = {
    filename: json.name + '.min.js',
    url: json.name + '.min.js.map'
  };
}

var result = uglify.minify(buf.toString(), uglifyOpts);
fs.writeFileSync(outputFile + '.min.js', result.code);
if (result.map) fs.writeFileSync(outputFile + '.min.js.map', result.map);
if (standalone) fs.writeFileSync(outputFile + '.bundle.js', buf);
if (result.warnings) {
  for (var j=0, jl = result.warnings.length; j<jl; ++j)
    console.warn('UglifyJS warning:', result.warnings[j]);
}

});