/* jshint node: true */

module.exports = function(grunt) {

  "use strict";

  // Force use of Unix newlines

  grunt.util.linefeed = '\n';

  RegExp.quote = require('regexp-quote')

  var btoa = require('btoa')

  // Project configuration.

  grunt.initConfig({

    // Metadata.

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

    banner: '/*!\n' +

              ' * Bootstrap v<%= pkg.version %> (<%= pkg.homepage %>)\n' +

              ' * Copyright <%= grunt.template.today("yyyy") %> <%= pkg.author %>\n' +

              ' * Licensed under <%= _.pluck(pkg.licenses, "url").join(", ") %>\n' +

              ' */\n\n',

    jqueryCheck: 'if (typeof jQuery === "undefined") { throw new Error("Bootstrap requires jQuery") }\n\n',

    // Task configuration.

    clean: {

      dist: ['dist']

    },

    jshint: {

      options: {

        jshintrc: 'js/.jshintrc'

      },

      gruntfile: {

        src: 'Gruntfile.js'

      },

      src: {

        src: ['js/*.js']

      },

      test: {

        src: ['js/tests/unit/*.js']

      }

    },

    concat: {

      options: {

        banner: '<%= banner %><%= jqueryCheck %>',

        stripBanners: false

      },

      bootstrap: {

        src: [

          'js/transition.js',

          'js/alert.js',

          'js/button.js',

          'js/carousel.js',

          'js/collapse.js',

          'js/dropdown.js',

          'js/modal.js',

          'js/tooltip.js',

          'js/popover.js',

          'js/scrollspy.js',

          'js/tab.js',

          'js/affix.js'

        ],

        dest: 'dist/js/<%= pkg.name %>.js'

      }

    },

    uglify: {

      options: {

        banner: '<%= banner %>',

        report: 'min'

      },

      bootstrap: {

        src: ['<%= concat.bootstrap.dest %>'],

        dest: 'dist/js/<%= pkg.name %>.min.js'

      }

    },

    recess: {

      options: {

        compile: true,

        banner: '<%= banner %>'

      },

      bootstrap: {

        src: ['less/bootstrap.less'],

        dest: 'dist/css/<%= pkg.name %>.css'

      },

      min: {

        options: {

          compress: true

        },

        src: ['less/bootstrap.less'],

        dest: 'dist/css/<%= pkg.name %>.min.css'

      },

      theme: {

        src: ['less/theme.less'],

        dest: 'dist/css/<%= pkg.name %>-theme.css'

      },

      theme_min: {

        options: {

          compress: true

        },

        src: ['less/theme.less'],

        dest: 'dist/css/<%= pkg.name %>-theme.min.css'

      }

    },

    copy: {

      fonts: {

        expand: true,

        src: ["fonts/*"],

        dest: 'dist/'

      }

    },

    qunit: {

      options: {

        inject: 'js/tests/unit/phantom.js'

      },

      files: ['js/tests/*.html']

    },

    connect: {

      server: {

        options: {

          port: 3000,

          base: '.'

        }

      }

    },

    jekyll: {

      docs: {}

    },

    validation: {

      options: {

        reset: true,

        relaxerror: [

          "Bad value X-UA-Compatible for attribute http-equiv on element meta.",

          "Element img is missing required attribute src."

        ]

      },

      files: {

        src: ["_gh_pages/**/*.html"]

      }

    },

    watch: {

      src: {

        files: '<%= jshint.src.src %>',

        tasks: ['jshint:src', 'qunit']

      },

      test: {

        files: '<%= jshint.test.src %>',

        tasks: ['jshint:test', 'qunit']

      },

      recess: {

        files: 'less/*.less',

        tasks: ['recess']

      }

    },

    sed: {

      versionNumber: {

        pattern: (function () {

          var old = grunt.option('oldver')

          return old ? RegExp.quote(old) : old

        })(),

        replacement: grunt.option('newver'),

        recursive: true

      }

    },

    'saucelabs-qunit': {

      all: {

        options: {

          build: process.env.TRAVIS_JOB_ID,

          concurrency: 3,

          urls: ['http://127.0.0.1:3000/js/tests/index.html'],

          browsers: [

            // See https://saucelabs.com/docs/platforms/webdriver

            {

              browserName: 'safari',

              version: '6',

              platform: 'OS X 10.8'

            },

            {

              browserName: 'chrome',

              version: '28',

              platform: 'OS X 10.6'

            },

            /* FIXME: currently fails 1 tooltip test

            {

              browserName: 'firefox',

              version: '25',

              platform: 'OS X 10.6'

            },*/

            // Mac Opera not currently supported by Sauce Labs

            /* FIXME: currently fails 1 tooltip test

            {

              browserName: 'internet explorer',

              version: '11',

              platform: 'Windows 8.1'

            },*/

            /*

            {

              browserName: 'internet explorer',

              version: '10',

              platform: 'Windows 8'

            },

            {

              browserName: 'internet explorer',

              version: '9',

              platform: 'Windows 7'

            },

            {

              browserName: 'internet explorer',

              version: '8',

              platform: 'Windows 7'

            },

            {// unofficial

              browserName: 'internet explorer',

              version: '7',

              platform: 'Windows XP'

            },

            */

            {

              browserName: 'chrome',

              version: '31',

              platform: 'Windows 8.1'

            },

            {

              browserName: 'firefox',

              version: '25',

              platform: 'Windows 8.1'

            },

            // Win Opera 15+ not currently supported by Sauce Labs

            {

              browserName: 'iphone',

              version: '6.1',

              platform: 'OS X 10.8'

            },

            // iOS Chrome not currently supported by Sauce Labs

            // Linux (unofficial)

            {

              browserName: 'chrome',

              version: '30',

              platform: 'Linux'

            },

            {

              browserName: 'firefox',

              version: '25',

              platform: 'Linux'

            }

            // Android Chrome not currently supported by Sauce Labs

            /* Android Browser (super-unofficial)

            {

              browserName: 'android',

              version: '4.0',

              platform: 'Linux'

            }

            */

          ],

        }

      }

    }

  });

  // These plugins provide necessary tasks.

  grunt.loadNpmTasks('grunt-contrib-clean');

  grunt.loadNpmTasks('grunt-contrib-concat');

  grunt.loadNpmTasks('grunt-contrib-connect');

  grunt.loadNpmTasks('grunt-contrib-copy');

  grunt.loadNpmTasks('grunt-contrib-jshint');

  grunt.loadNpmTasks('grunt-contrib-qunit');

  grunt.loadNpmTasks('grunt-contrib-uglify');

  grunt.loadNpmTasks('grunt-contrib-watch');

  grunt.loadNpmTasks('grunt-html-validation');

  grunt.loadNpmTasks('grunt-jekyll');

  grunt.loadNpmTasks('grunt-recess');

  grunt.loadNpmTasks('grunt-saucelabs');

  grunt.loadNpmTasks('grunt-sed');

  // Docs HTML validation task

  grunt.registerTask('validate-html', ['jekyll', 'validation']);

  // Test task.

  var testSubtasks = ['dist-css', 'jshint', 'qunit', 'validate-html'];

  // Only run Sauce Labs tests if there's a Sauce access key

  if (typeof process.env.SAUCE_ACCESS_KEY !== 'undefined') {

    testSubtasks.push('connect');

    testSubtasks.push('saucelabs-qunit');

  }

  grunt.registerTask('test', testSubtasks);

  // JS distribution task.

  grunt.registerTask('dist-js', ['concat', 'uglify']);

  // CSS distribution task.

  grunt.registerTask('dist-css', ['recess']);

  // Fonts distribution task.

  grunt.registerTask('dist-fonts', ['copy']);

  // Full distribution task.

  grunt.registerTask('dist', ['clean', 'dist-css', 'dist-fonts', 'dist-js']);

  // Default task.

  grunt.registerTask('default', ['test', 'dist', 'build-customizer']);

  // 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']);

  // task for building customizer

  grunt.registerTask('build-customizer', 'Add scripts/less files to customizer.', function () {

    var fs = require('fs')

    function getFiles(type) {

      var files = {}

      fs.readdirSync(type)

        .filter(function (path) {

          return type == 'fonts' ? true : new RegExp('\\.' + type + '$').test(path)

        })

        .forEach(function (path) {

          var fullPath = type + '/' + path

          return files[path] = (type == 'fonts' ? btoa(fs.readFileSync(fullPath)) : fs.readFileSync(fullPath, 'utf8'))

        })

      return 'var __' + type + ' = ' + JSON.stringify(files) + '\n'

    }

    var files = getFiles('js') + getFiles('less') + getFiles('fonts')

    fs.writeFileSync('docs-assets/js/raw-files.js', files)

  });

};