module.exports = function(grunt) {

  // time the grunt execution time
  require('time-grunt')(grunt);

  // configure main project settings
  grunt.initConfig({

    // basic config
    pkg: grunt.file.readJSON('package.json'),

    // CoffeeScript compiling
    coffee: {
      compile: {
        options: {
          sourceMap: false
        },
        expand: true,
        flatten: true,
        cwd: 'src/coffee',
        src: '*.coffee',
        dest: 'build/js',
        ext: '.js'
      }
    },

    // SASS compiling
    'dart-sass': {
      dist: {
        options: {
          style: 'compressed'
        },
        files: [{
          expand: true,
          cwd: 'src/sass',
          src: ['*.sass'],
          dest: 'build/css',
          ext: '.css'
        }]
      }
    },

    // watch sass and CoffeeScript files for live reloading
    watch: {
      scripts: {
        files: [
          'src/sass/*.sass',
          'src/sass/*.scss',
          'src/coffee/*.coffee'
        ],
        tasks: ['sass', 'coffee'],
        options: {
          spawn: false
        }
      }
    }

  });

  // load plugins
  grunt.loadNpmTasks('grunt-contrib-coffee');
  grunt.loadNpmTasks('grunt-dart-sass');
  grunt.loadNpmTasks('grunt-contrib-watch');

  // do the tasks
  grunt.registerTask('default', ['coffee', 'dart-sass', 'watch']);

};