/*!

 * Copyright 2013 Twitter, Inc.

 *

 * Licensed under the Creative Commons Attribution 3.0 Unported License. For

 * details, see http://creativecommons.org/licenses/by/3.0/.

 */

window.onload = function () { // wait for load in a dumb way because B-0

  var cw = '/*!\n * Bootstrap v3.0.3\n *\n * Copyright 2013 Twitter, Inc\n * Licensed under the Apache License v2.0\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Designed and built with all the love in the world @twitter by @mdo and @fat.\n */\n\n'

  function showError(msg, err) {

    $('<div id="bsCustomizerAlert" class="bs-customizer-alert">\

        <div class="container">\

          <a href="#bsCustomizerAlert" data-dismiss="alert" class="close pull-right">&times;</a>\

          <p class="bs-customizer-alert-text"><span class="glyphicon glyphicon-warning-sign"></span>' + msg + '</p>' +

          (err.extract ? '<pre class="bs-customizer-alert-extract">' + err.extract.join('\n') + '</pre>' : '') + '\

        </div>\

      </div>').appendTo('body').alert()

    throw err

  }

  function showCallout(msg, showUpTop) {

    var callout = $('<div class="bs-callout bs-callout-danger">\

       <h4>Attention!</h4>\

      <p>' + msg + '</p>\

    </div>')

    if (showUpTop) {

      callout.appendTo('.bs-docs-container')

    } else {

      callout.insertAfter('.bs-customize-download')

    }

  }

  function getQueryParam(key) {

    key = key.replace(/[*+?^$.\[\]{}()|\\\/]/g, "\\$&"); // escape RegEx meta chars

    var match = location.search.match(new RegExp("[?&]"+key+"=([^&]+)(&|$)"));

    return match && decodeURIComponent(match[1].replace(/\+/g, " "));

  }

  function createGist(configJson) {

    var data = {

      "description": "Bootstrap Customizer Config",

      "public": true,

      "files": {

        "config.json": {

          "content": configJson

        }

      }

    }

    $.ajax({

      url: 'https://api.github.com/gists',

      type: 'POST',

      dataType: 'json',

      data: JSON.stringify(data)

    })

    .success(function(result) {

      var origin = window.location.protocol + "//" + window.location.host

      history.replaceState(false, document.title, origin + window.location.pathname + '?id=' + result.id)

    })

    .error(function(err) {

      showError('<strong>Ruh roh!</strong> Could not save gist file, configuration not saved.', err)

    })

  }

  function getCustomizerData() {

    var vars = {}

    $('#less-variables-section input')

        .each(function () {

          $(this).val() && (vars[ $(this).prev().text() ] = $(this).val())

        })

    var data = {

      vars: vars,

      css: $('#less-section input:checked')  .map(function () { return this.value }).toArray(),

      js:  $('#plugin-section input:checked').map(function () { return this.value }).toArray()

    }

    if ($.isEmptyObject(data.vars) && !data.css.length && !data.js.length) return

    return data

  }

  function parseUrl() {

    var id = getQueryParam('id')

    if (!id) return

    $.ajax({

      url: 'https://api.github.com/gists/' + id,

      type: 'GET',

      dataType: 'json'

    })

    .success(function(result) {

      var data = JSON.parse(result.files['config.json'].content)

      if (data.js) {

        $('#plugin-section input').each(function () {

          $(this).prop('checked', ~$.inArray(this.value, data.js))

        })

      }

      if (data.css) {

        $('#less-section input').each(function () {

          $(this).prop('checked', ~$.inArray(this.value, data.css))

        })

      }

      if (data.vars) {

        for (var i in data.vars) {

          $('input[data-var="' + i + '"]').val(data.vars[i])

        }

      }

    })

    .error(function(err) {

      showError('Error fetching bootstrap config file', err)

    })

  }

  function generateZip(css, js, fonts, config, complete) {

    if (!css && !js) return showError('<strong>Ruh roh!</strong> No Bootstrap files selected.', new Error('no Bootstrap'))

    var zip = new JSZip()

    if (css) {

      var cssFolder = zip.folder('css')

      for (var fileName in css) {

        cssFolder.file(fileName, css[fileName])

      }

    }

    if (js) {

      var jsFolder = zip.folder('js')

      for (var fileName in js) {

        jsFolder.file(fileName, js[fileName])

      }

    }

    if (fonts) {

      var fontsFolder = zip.folder('fonts')

      for (var fileName in fonts) {

        fontsFolder.file(fileName, fonts[fileName], {base64: true})

      }

    }

    if (config) {

      zip.file('config.json', config)

    }

    var content = zip.generate({type:"blob"})

    complete(content)

  }

  function generateCustomCSS(vars) {

    var result = ''

    for (var key in vars) {

      result += key + ': ' + vars[key] + ';\n'

    }

    return result + '\n\n'

  }

  function generateFonts() {

    var glyphicons = $('#less-section [value="glyphicons.less"]:checked')

    if (glyphicons.length) {

      return __fonts

    }

  }

  // Returns an Array of @import'd filenames from 'bootstrap.less' in the order

  // in which they appear in the file.

  function bootstrapLessFilenames() {

    var IMPORT_REGEX = /^@import \"(.*?)\";$/

    var bootstrapLessLines = __less['bootstrap.less'].split('\n')

    for (var i = 0, imports = []; i < bootstrapLessLines.length; i++) {

      var match = IMPORT_REGEX.exec(bootstrapLessLines[i])

      if (match) imports.push(match[1])

    }

    return imports

  }

  function generateCSS() {

    var oneChecked = false

    var lessFileIncludes = {}

    $('#less-section input').each(function() {

      var $this = $(this)

      var checked = $this.is(':checked')

      lessFileIncludes[$this.val()] = checked

      oneChecked = oneChecked || checked

    })

    if (!oneChecked) return false

    var result = {}

    var vars = {}

    var css = ''

    $('#less-variables-section input')

        .each(function () {

          $(this).val() && (vars[ $(this).prev().text() ] = $(this).val())

        })

    $.each(bootstrapLessFilenames(), function(index, filename) {

      var fileInclude = lessFileIncludes[filename]

      // Files not explicitly unchecked are compiled into the final stylesheet.

      // Core stylesheets like 'normalize.less' are not included in the form

      // since disabling them would wreck everything, and so their 'fileInclude'

      // will be 'undefined'.

      if (fileInclude || (fileInclude == null)) css += __less[filename]

      // Custom variables are added after Bootstrap variables so the custom

      // ones take precedence.

      if (('variables.less' === filename) && vars) css += generateCustomCSS(vars)

    })

    css = css.replace(/@import[^\n]*/gi, '') //strip any imports

    try {

      var parser = new less.Parser({

          paths: ['variables.less', 'mixins.less']

        , optimization: 0

        , filename: 'bootstrap.css'

      }).parse(css, function (err, tree) {

        if (err) {

          return showError('<strong>Ruh roh!</strong> Could not parse less files.', err)

        }

        result = {

          'bootstrap.css'     : cw + tree.toCSS(),

          'bootstrap.min.css' : cw + tree.toCSS({ compress: true }).replace(/\n/g, '') // FIXME: remove newline hack once less.js upgraded to v1.4

        }

      })

    } catch (err) {

      return showError('<strong>Ruh roh!</strong> Could not parse less files.', err)

    }

    return result

  }

  function generateJavascript() {

    var $checked = $('#plugin-section input:checked')

    if (!$checked.length) return false

    var js = $checked

      .map(function () { return __js[this.value] })

      .toArray()

      .join('\n')

    return {

      'bootstrap.js': js,

      'bootstrap.min.js': cw + uglify(js)

    }

  }

  var inputsComponent = $('#less-section input')

  var inputsPlugin    = $('#plugin-section input')

  var inputsVariables = $('#less-variables-section input')

  $('#less-section .toggle').on('click', function (e) {

    e.preventDefault()

    inputsComponent.prop('checked', !inputsComponent.is(':checked'))

  })

  $('#plugin-section .toggle').on('click', function (e) {

    e.preventDefault()

    inputsPlugin.prop('checked', !inputsPlugin.is(':checked'))

  })

  $('#less-variables-section .toggle').on('click', function (e) {

    e.preventDefault()

    inputsVariables.val('')

  })

  $('[data-dependencies]').on('click', function () {

    if (!$(this).is(':checked')) return

    var dependencies = this.getAttribute('data-dependencies')

    if (!dependencies) return

    dependencies = dependencies.split(',')

    for (var i = 0; i < dependencies.length; i++) {

      var dependency = $('[value="' + dependencies[i] + '"]')

      dependency && dependency.prop('checked', true)

    }

  })

  $('[data-dependents]').on('click', function () {

    if ($(this).is(':checked')) return

    var dependents = this.getAttribute('data-dependents')

    if (!dependents) return

    dependents = dependents.split(',')

    for (var i = 0; i < dependents.length; i++) {

      var dependent = $('[value="' + dependents[i] + '"]')

      dependent && dependent.prop('checked', false)

    }

  })

  var $compileBtn = $('#btn-compile')

  var $downloadBtn = $('#btn-download')

  $compileBtn.on('click', function (e) {

    var configData = getCustomizerData()

    var configJson = JSON.stringify(configData, null, 2)

    e.preventDefault()

    $compileBtn.attr('disabled', 'disabled')

    generateZip(generateCSS(), generateJavascript(), generateFonts(), configJson, function (blob) {

      $compileBtn.removeAttr('disabled')

      saveAs(blob, "bootstrap.zip")

      createGist(configJson)

    })

  })

  // browser support alerts

  if (!window.URL && navigator.userAgent.toLowerCase().indexOf('safari') != -1) {

    showCallout("Looks like you're using safari, which sadly doesn't have the best support\

                 for HTML5 blobs. Because of this your file will be downloaded with the name <code>\"untitled\"</code>.\

                 However, if you check your downloads folder, just rename this <code>\"untitled\"</code> file\

                 to <code>\"bootstrap.zip\"</code> and you should be good to go!")

  } else if (!window.URL && !window.webkitURL) {

    $('.bs-docs-section, .bs-sidebar').css('display', 'none')

    showCallout("Looks like your current browser doesn't support the Bootstrap Customizer. Please take a second\

                to <a href=\"https://www.google.com/intl/en/chrome/browser/\"> upgrade to a more modern browser</a>.", true)

  }

  parseUrl()

}