'use strict';

var fs = require('fs');
var grunt = require('grunt');

var src = 'npm-react-tools';
var dest = 'build/npm-react-tools/';

function buildRelease() {
  grunt.file.exists(dest) && grunt.file.delete(dest);

  // read our required files from package.json
  var pkgFiles = grunt.config.data.pkg.files;

  // copy all files from src first, includes custom README
  var mappings = grunt.file.expandMapping('**/*', dest, {cwd: src});

  // make sure we also get package.json
  pkgFiles.push('package.json');

  pkgFiles.map(function(file) {
    if (grunt.file.isDir(file)) {
      mappings = mappings.concat(grunt.file.expandMapping(file + '**/*', dest));
    } else {
      mappings.push({src: [file], dest: dest + file});
    }
  });

  mappings.forEach(function(mapping) {
    var src = mapping.src[0];
    var dest = mapping.dest;
    if (grunt.file.isDir(src)) {
      grunt.file.mkdir(dest);
    } else {
      grunt.file.copy(src, dest);
    }
  });
}

function packRelease() {
  /*jshint validthis:true */
  var done = this.async();
  var spawnCmd = {
    cmd: 'npm',
    args: ['pack', 'npm-react-tools'],
    opts: {
      cwd: 'build/'
    }
  };
  grunt.util.spawn(spawnCmd, function() {
    var src = 'build/react-tools-' + grunt.config.data.pkg.version + '.tgz';
    var dest = 'build/react-tools.tgz';
    fs.rename(src, dest, done);
  });
}

module.exports = {
  buildRelease: buildRelease,
  packRelease: packRelease
};