/* ----------------------------------
 * Ratchet's Gruntfile
 * Licensed under The MIT License
 * http://opensource.org/licenses/MIT
 * ---------------------------------- */

module.exports = function(grunt) {
  'use strict';

  // Force use of Unix newlines
  grunt.util.linefeed = '\n';

  // Project configuration.
  grunt.initConfig({
    pkg: grunt.file.readJSON('package.json'),

    // Metadata.
    meta: {
      distPath:       'dist/',
      docsPath:       'docs/dist/',
      docsAssetsPath: 'docs/assets/'
    },

    banner: '/*!\n' +
            ' * =====================================================\n' +
            ' * Ratchet v<%= pkg.version %> (<%= pkg.homepage %>)\n' +
            ' * Copyright <%= grunt.template.today("yyyy") %> <%= pkg.author %>\n' +
            ' * Licensed under <%= pkg.license %>.\n' +
            ' *\n' +
            ' * v<%= pkg.version %> designed by @connors.\n' +
            ' * =====================================================\n' +
            ' */\n',

    concat: {
      ratchet: {
        options: {
          banner: '<%= banner %>'
        },
        src: [
          'js/modals.js',
          'js/popovers.js',
          'js/push.js',
          'js/segmented-controllers.js',
          'js/sliders.js',
          'js/toggles.js'
        ],
        dest: '<%= meta.distPath %><%= pkg.name %>.js'
      },
      docs: {
        src: '<%= meta.distPath %><%= pkg.name %>.js',
        dest: '<%= meta.docsPath %><%= pkg.name %>.js'
      }
    },

    sass: {
      options: {
        banner: '<%= banner %>',
        style: 'expanded',
        unixNewlines: true
      },
      dist: {
        files: {
          '<%= meta.distPath %><%= pkg.name %>.css': 'sass/ratchet.scss',
          '<%= meta.distPath %><%= pkg.name %>-theme-ios.css': 'sass/theme-ios.scss',
          '<%= meta.distPath %><%= pkg.name %>-theme-android.css': 'sass/theme-android.scss',
          '<%= meta.docsAssetsPath %>css/docs.css': 'sass/docs.scss'
        }
      }
    },

    copy: {
      docs: {
        expand: true,
        cwd: 'dist',
        src: [
          '**/*'
        ],
        dest: 'docs/dist'
      }
    },

    cssmin: {
      minify: {
        options: {
          banner: '', // set to empty ; see bellow
          keepSpecialComments: '*', // set to '*' because we already add the banner in sass
          report: 'min'
        },
        files: {
          'dist/<%= pkg.name %>.min.css': 'dist/<%= pkg.name %>.css'
        }
      }
    },

    uglify: {
      options: {
        banner: '<%= banner %>',
        report: 'min'
      },
      ratchet: {
        src: 'dist/<%= pkg.name %>.js',
        dest: 'dist/<%= pkg.name %>.min.js'
      }
    },

    watch: {
      scripts: {
        files: [
          '<%= meta.srcPath %>/**/*.scss'
        ],
        tasks: ['sass']
      }
    },

    jekyll: {
      docs: {}
    },

    validation: {
      options: {
        charset: 'utf-8',
        doctype: 'HTML5',
        failHard: true,
        reset: true,
        relaxerror: [
          'Bad value apple-mobile-web-app-title for attribute name on element meta: Keyword apple-mobile-web-app-title is not registered.',
          'Bad value apple-mobile-web-app-status-bar-style for attribute name on element meta: Keyword apple-mobile-web-app-status-bar-style is not registered.',
          'Bad value X-UA-Compatible for attribute http-equiv on element meta.',
          'Attribute ontouchstart not allowed on element body at this point.'
        ]
      },
      files: {
        src: '_site/**/*.html'
      }
    },

    sed: {
      versionNumber: {
        pattern: (function () {
          var old = grunt.option('oldver');
          return old ? RegExp.quote(old) : old;
        })(),
        replacement: grunt.option('newver'),
        recursive: true
      }
    }
  });

  // Load the plugins
  require('load-grunt-tasks')(grunt, {scope: 'devDependencies'});

  // Default task(s).
  grunt.registerTask('dist-css', ['sass', 'cssmin']);
  grunt.registerTask('dist-js', ['concat', 'uglify']);
  grunt.registerTask('dist', ['dist-css', 'dist-js', 'copy']);
  grunt.registerTask('validate-html', ['jekyll', 'validation']);
  grunt.registerTask('default', ['dist']);
  grunt.registerTask('build', ['dist']);

  // Version numbering task.
  // grunt change-version-number --oldver=A.B.C --newver=X.Y.Z
  // This can be overzealous, so its changes should always be manually reviewed!
  grunt.registerTask('change-version-number', 'sed');
};