module.exports = function(grunt) {
  'use strict';
  require('load-grunt-tasks')(grunt);

  grunt.initConfig({

    config: {
      source: 'site',
      dest: 'dist',
      temp: '.tmp'
    },

    eslint: {
      // http://eslint.org/docs/rules/
      target: '<%= config.source %>/assets/js/**/*'
    },

    sasslint: {
      // https://github.com/sasstools/sass-lint/tree/master/docs/rules
      target: '<%= config.source %>/assets/scss/**/*'
    },

    clean: {
      build: {
        files: [{
          dot: true,
          src: [
            '<%= config.dest %>/*',
            '!<%= config.dest %>/video/*'
          ]
        }]
      }
    },

    sass: {
      options: {
        sourceMap: true,
        includePaths: [
          '<%= config.source %>/assets/scss/'
        ]
      },
      build: {
        files: {
          '<%= config.dest %>/assets/css/main.css': '<%= config.source %>/assets/scss/main.scss'
        }
      }
    },

    postcss: {
      options: {
        map: true,
        processors: [
          require('autoprefixer')({browsers: ['last 2 versions']})
        ]
      },
      dist: {
        src: '<%= config.dest %>/assets/css/main.css'
      }
    },

    copy: {
      assets: {
        files: [{
          expand: true,
          cwd: '<%= config.source %>/assets/',
          src: ['{js,fonts,img,icon,data,vendor}/**/*'],
          dest: '<%= config.dest %>/assets/'
        }]
      },
      vendor: {
        files: [{
          expand: true,
          flatten: true,
          cwd: './node_modules/',
          src: [
            'normalize.css/normalize.css'
          ],
          dest: '<%= config.dest %>/assets/vendor/'
        }]
      },
      video: {
        files: [{
          expand: true,
          flatten: true,
          cwd: '<%= config.source %>/video/',
          src: ['*'],
          dest: '<%= config.dest %>/video/'
        }]
      },
      misc: {
        files: [{
          expand: true,
          cwd: '<%= config.source %>',
          src: [
            'favicon.ico'
          ],
          dest: '<%= config.dest %>'
        }]
      }
    },

    assemble: {
      options: {
        production: false,
        assets: '<%= config.dest %>/assets',
        data: '<%= config.source %>/data/*.yml',
        flatten: true,
        layout: 'default.hbs',
        layoutdir: '<%= config.source %>/layouts',
        partials: '<%= config.source %>/partials/**/*.hbs'
      },

      buildDev: {
        files: [{'<%= config.dest %>/': ['<%= config.source %>/pages/**/*.hbs']}]
      },

      buildProd: {
        options: {
          production: true,
        },
        files: [{'<%= config.dest %>/': ['<%= config.source %>/pages/**/*.hbs']}]
      }
    },

    watch: {
      images: {
        files: '<%= config.source %>/img/**/*',
        tasks: ['copy:assets']
      },
      scss: {
        files: '<%= config.source %>/assets/**/*.scss',
        tasks: ['concurrent:scssWatch']
      },
      js: {
        files: '<%= config.source %>/assets/**/*.{json,js}',
        tasks: ['concurrent:jsWatch']
      },
      assemble: {
        files: '<%= config.source %>/**/*.hbs',
        tasks: ['assemble:buildDev']
      }
    },

    concurrent: {
      scssWatch: ['sasslint', ['sass:build', 'postcss']],
      jsWatch: ['eslint', 'babel']
    },

    browserSync: {
      serve: {
        bsFiles: { src: [ '<%= config.dest %>/**.*' ] },
        options: {
          watchTask: true,
          server: '<%= config.dest %>',
          browser: ["google chrome"],
          // tunnel: true,
          open: 'local',
          notify: false,
          ghostMode: {
            clicks: true,
            forms: true,
            scroll: true
          }
        }
      }
    },

    'sftp-deploy': {
      build: {
        auth: {
          host: 'markamoser.com',
          port: 6791,
          authKey: 'workhorse'
        },
        cache: 'sftpCache.json',
        src: 'dist/',
        dest: 'www/markamoser/',
        progress: true
      }
    }

  });

  // Tasks

  grunt.registerTask('lint', ['sasslint', 'eslint']);
  grunt.registerTask('build', ['clean:build', 'copy', 'sass', 'postcss', 'assemble:buildDev']);
  grunt.registerTask('buildProd', ['clean:build', 'copy', 'sass', 'postcss', 'assemble:buildProd']);
  grunt.registerTask('default', ['lint', 'build']);

  grunt.registerTask('serve', ['lint', 'build', 'browserSync', 'watch']);
  grunt.registerTask('deploy', ['buildProd', 'sftp-deploy:build']);
};