require 'redcarpet'

module ApplicationHelper
  include RegistrationHelper

  @@keyQueue = nil
  @@translationsOnThisPage = nil
  @@lastTranslation = nil
  @@allTranslations = nil
  @@no_banner = true
  @@banner_attribution_details = nil
  @@banner_image = nil
  @@has_content = true
  @@front_page = false
  @@body_class = nil
  @@test_location = nil

  def init_vars
    @@keyQueue = nil
    @@no_banner = true
    @@banner_attribution_details = nil
    @@banner_image = nil
    @@has_content = true
    @@front_page = false
    @@body_class = nil
  end

  def this_is_the_front_page
    @@front_page = true
  end

  def header_is_fixed
    @fixed_header = true
  end

  def is_header_fixed?
    @fixed_header ||= false
  end

  def is_this_the_front_page?
    return @@front_page
  end

  def header_classes
    classes = Array.new
    classes << 'fixed' if is_header_fixed?
    return classes
  end

  def ThereAreTranslationsOnThisPage?
    @@translationsOnThisPage
  end

  def get_all_translations
    @@allTranslations
  end

  def title(page_title)
    content_for(:title) { page_title.to_s }
  end

  def description(page_description)
    content_for(:description) { page_description.to_s }
  end

  def banner_image(banner_image, name: nil, id: nil, user_id: nil, src: nil)
    @@no_banner = false
    @@banner_image = banner_image
    if (name || id || user_id || src)
      @@banner_attribution_details = {:name => name, :id => id, :user_id => user_id, :src => src}
    end
    content_for(:banner_image) { banner_image.to_s }
  end

  def banner_attrs(banner_image)
    @@no_banner = false
    if banner_image.length > 0
      @@banner_image = banner_image
      return {style: 'background-image: url(' + banner_image + ');', class: 'has-image' }
    end
    {class: 'no-image'}
  end

  def has_banner?
    !@@no_banner
  end

  def has_content?
    @@has_content
  end

  def has_no_content
    @@has_content = false
  end

  def banner_title(banner_title)
    @@no_banner = false
    content_for(:banner) { ('<div class="row"><h1>' + banner_title.to_s + '</h1></div>').html_safe }
  end

  def add_stylesheet(sheet)
    @stylesheets ||= []
    @stylesheets << sheet unless @stylesheets.include?(sheet)
  end

  def stylesheets
    html = ''
    Rack::MiniProfiler.step('inject_css') do
      html += inject_css!
    end
    (@stylesheets || []).each do |css|
      Rack::MiniProfiler.step("inject_css #{css}") do
        html += inject_css! css.to_s
      end
    end
    html += stylesheet_link_tag 'i18n-debug' if request.params['i18nDebug']
    return html.html_safe
  end

  def add_inline_script(script)
    @_inline_scripts ||= []
    script = Rails.application.assets.find_asset("#{script.to_s}.js").to_s
    @_inline_scripts << script unless @_inline_scripts.include?(script)
  end

  def inline_scripts
    return '' unless @_inline_scripts.present?
    "<script>#{@_inline_scripts.join("\n")}</script>".html_safe
  end

  def banner_attribution
    if @@banner_image && @@banner_attribution_details
      src = @@banner_attribution_details[:src]
      attribution = '<div class="photo-attribution' + (src ? ' ' + src : '') + '">'
      if src == 'panoramio'
        attribution += '<a href="http://www.panoramio.com/photo/' + @@banner_attribution_details[:id].to_s + '" target="_blank">&copy; ' +
            _('Banner_image_provided_by_panoramio_user') +
          '</a> <a href="http://www.panoramio.com/user/' + @@banner_attribution_details[:user_id].to_s + '" target="_blank">' + @@banner_attribution_details[:name] + '</a>' +
          '<span>' + _('Photos_provided_by_Panoramio_are_under_the_copyright_of_their_owners')  + '</span>'
      end
      attribution += '</div>'
      attribution.html_safe
    end
  end

  def dom_ready(&block)
    content_for(:dom_ready, &block)
  end

  def body_class(c)
    @@body_class ||= Array.new
    @@body_class << (c.is_a?(Array) ? c.join(' ') : c)
  end

  def page_style
    classes = Array.new

    classes << 'has-translations' if ThereAreTranslationsOnThisPage?
    classes << 'no-content' unless @@has_content
    classes << 'has-banner-image' if @@banner_image
    classes << @@body_class.join(' ') if @@body_class
    classes << 'fixed-banner' if is_header_fixed?

    if params[:controller]
      classes << params[:action]
      unless params[:controller] == 'application'
        classes << params[:controller] 

        if params[:action]
          classes << "#{params[:controller]}-#{params[:action]}"
        end
      end
    end
    return classes
  end

  def yield_or_default(section, default = '')
    content_for?(section) ? content_for(section) : default
  end

  def _translate_me(translation)
    @@translationsOnThisPage = true
    datakeys = ''
    translation['vars'].each { |key, value| datakeys += ' data-var-' + key.to_s + '="' + value.to_s.gsub('"', '&quot;') + '"' }
    ('<span class="translate-me ' + (translation['is_translated'] ? '' : 'un') + 'translated lang-' + (translation['lang']) + ' key--' + translation['key'].gsub('.', '--') + '" data-translate-key="' + translation['key'] + '" data-translate-untranslated="' + translation['untranslated'].gsub('"', '&quot;') + (translation['translated'] ? '" data-translate-translated="' + translation['translated'] : '') + '" data-vars="' + (translation['vars'].length ? translation['vars'].to_json.gsub('"', '&quot;') : '') + '" title="' + ('translate.alt_click') + '">' + (translation['html'] || translation['untranslated']) + '</span>').to_s.html_safe
  end

  def _do_translate(key, vars, behavior, behavior_size, locale)
    translation = {'key' => key, 'lang' => '0', 'vars' => vars}
    v = vars.dup
    begin
      v[:raise] = true
      options = {:raise => true}
      if locale
        options[:locale] = locale.to_sym
      end
      translation['untranslated'] = I18n.translate(key, v, options)
      translation['lang'] = locale.to_s
      translation['is_translated'] = true

      hash = Hash.new
      translations = Translation.where(["locale = ? AND key LIKE ?", locale.to_s, key + '%']).take(6).each { |o| hash[o.key] = o.value }
      translation['translated'] = hash.to_json.gsub('"', '&quot;')
    rescue I18n::MissingTranslationData
      default_translation = I18n::MissingTranslationExceptionHandler.note(key, behavior, behavior_size)
      translation['untranslated'] = default_translation
    end
    return translation
  end

  def _can_translate?()
    false
  end

  def off_screen(text, id = nil)
    content_tag(:span, text.html_safe, id: id, class: 'screen-reader-text')
  end

  def url_for_locale(locale, url = nil)
    return url unless locale.present?

    unless url.present?
      new_params = params.merge({action: (params[:_original_action] || params[:action])})
      new_params.delete(:_original_action)

      if Rails.env.development? || Rails.env.test?
        return url_for(new_params.merge({lang: locale.to_s}))
      end
    
      subdomain = Rails.env.preview? ? "preview-#{locale.to_s}" : locale.to_s
      return url_for(new_params.merge(host: "#{subdomain}.bikebike.org"))
    end

    return url if Rails.env.development? || Rails.env.test?
    return "https://preview-#{locale.to_s}.bikebike.org#{url}" if Rails.env.preview?
    "https://#{locale.to_s}.bikebike.org#{url}"
  end

  def registration_steps(conference = @conference)
    {
      pre: [:policy, :contact_info, :workshops],
      open: [:policy, :contact_info, :questions, :hosting, :payment, :workshops]
    }[@this_conference.registration_status]
  end

  def registration_status(registration)
    return :unregistered if registration.nil?
    return registration.status
  end

  def sortable(objects, id = 'id', url: nil, &block)
    result = '<ul class="sortable sortable-' + objects[0].class.name.underscore.gsub('_', '-') + (url ? ('" data-url="' + url) : '') + '" data-id="' + id + '">'
    objects.each_index do |i|
      @this = objects[i]
      result += '<li class="sortable-item">'
      result += hidden_field_tag (id + "[#{i}]"), objects[i][id]
      result += hidden_field_tag ('position' + "[#{i}]"), i, :class => 'sortable-position'
      if block_given?
        result += capture(objects[i], &block)
      end
      result += '</li>'
    end
    result += '</div>'
    result.html_safe
  end

  def tabs object, tabs
    type = object.class.name.downcase
    tab_list = ''

    tabs.each do |tab|
      link = nil
      if self.respond_to?(type + '_' + tab.to_s + '_path')
        link = self.send(type + '_' + tab.to_s + '_path', object)
      elsif self.respond_to?(tab.to_s + '_' + type + '_path')
        link = self.send(tab.to_s + '_' + type + '_path', object)
      end

      c = ['tab', 'tab-' + (link ? tab.to_s : 'show')]
      if params[:action] == tab.to_s
        c << 'current'
      end
      link_html = ''
      if tab.is_a?(Hash)
        func = tab.keys[0]
        val = tab[func]
        args = val ? (val.is_a?(Array) ? (val.collect { |v| object[v] } ) : [object[val]] ) : nil

        link_html = link_to func.to_s.gsub(/_path$/, ''), args ? self.send(func, args) : self.send(func), :class => c
      else
        #x
        #link_html = link_to tab, link || object, :class => c
      end
      tab_list += link_html
    end
    ('<nav class="row centered">
      <div class="tabs">' +
        tab_list +
      '</div>
    </nav>').html_safe
  end

  def tabs!
    object = nil
    tabs = nil
    case params[:controller]
      when 'organizations'
        object = @organization
        tabs = OrganizationsHelper::TABS
      when 'conferences'
        object = @conference
        tabs = ConferencesHelper::TABS
      when 'workshops'
        object = [@conference, @workshop]
        tabs = WorkshopsHelper::TABS
    end

    if object && tabs
      return tabs object, tabs
    end
  end

  def sub_tabs object, tabs
    type = object.class.name.downcase
    tab_list = ''

    tabs.each do |tab|
      link = nil
      if self.respond_to?(type + '_' + tab.to_s + '_path')
        link = self.send(type + '_' + tab.to_s + '_path', object)
      elsif self.respond_to?(tab.to_s + '_' + type + '_path')
        link = self.send(tab.to_s + '_' + type + '_path', object)
      end

      c = ['sub-tab', 'sub-tab-' + (link ? tab.to_s : 'show')]
      if current_page?(link)
        c << 'current'
      end
      tab_list += link_to tab, link || object, :class => c
    end
    ('<nav class="sub-tabs">' + tab_list + '</nav>').html_safe
  end

  def sub_tabs!
    object = nil
    tabs = nil
    case params[:controller]
      when 'organizations'
        object = @organization
        tabs = OrganizationsHelper::SUB_TABS
      when 'conferences'
        object = @conference
        tabs = ConferencesHelper::SUB_TABS
    end

    if object && tabs
      return sub_tabs object, tabs
    end
  end

  def m(*args)
    _(*args) { |t|
      markdown(t)
    }
  end

  def markdown(object, attribute = nil)
    return '' unless object
    content = attribute ? object.send(attribute.to_s) : object
    @markdown ||= Redcarpet::Markdown.new(Redcarpet::Render::HTML.new({
        filter_html: true,
        hard_wrap: true,
        space_after_headers: true,
        fenced_code_blocks: true,
        link_attributes: { target: "_blank" }
      }), {
        autolink: true,
        disable_indented_code_blocks: true,
        superscript: true
      })
    @markdown.render(content).html_safe
  end

  def paragraph(object, attribute = nil)
    return '' unless object
    content = attribute ? object.send(attribute.to_s) : object
    result = ''
    if content =~ /<(p|span|h\d|div)[^>]*>/
      result = content.gsub(/\s*(style|class|id|width|height|font)=\".*?\"/, '')
        .gsub(/&nbsp;/, ' ')
        .gsub(/<(\/)?\s*h\d\s*>/, '<\1h3>')
        .gsub(/<p>(.*?)<br\s\/?>\s*(<br\s\/?>)+/, '<p>\1</p><p>')
        .gsub(/<span[^>]*>\s*(.*?)\s*<\/span>/, '\1')
        .gsub(/<p>\s*<\/p>/, '')
        .gsub(/<(\/)?div>/, '<\1p>')
      if !(result =~ /<p[^>]*>/)
        result = '<p>' + result + '</p>'
      end
    else
      result = markdown(object, attribute)
    end
    result.html_safe
  end

  def form_field(f, response = nil)
    id = 'field_' + f.id.to_s
    html = p(f, 'title')

    options = JSON.parse(f.options)
    if f.field_type == 'multiple'
      if f.help
        html += ('<div class="help">' + p(f, 'help') + '</div>').html_safe
      end

      opts = Hash.new
      options['options'].split(/\s*\n\s*/).each do |value|
        kv = value.split(/\s*\|\s*/, 2)
        opts[kv[0]] = kv[1]
      end

      val = response ? ActiveSupport::JSON.decode(response.data) : Hash.new

      if f.repeats?
        is_array = f.is_array?
        opts.each do |key, value|
          n = (id + (is_array ? ('_' + key) : '')).to_sym
          v = is_array ? (val ? val[key] : nil) : key
          o = {:label => value}
          if f.required
            options[:required] = true
          end
          html += _form_field(options['selection_type'], n, v, o)
        end
      else
        html += _form_field(options['selection_type'], id.to_sym, options_for_select(opts.invert, val), {})
      end
    else
      #html += field(id.to_sym, options['input_type'] + '_tag', label: false, placeholder: f.help, value: response ? ActiveSupport::JSON.decode(response.data) : nil, required: f.required)
      opts = {label: false, placeholder: f.help && f.help.length > 0 ? f.help : false}
      if f.required
        opts[:required] = true
      end
      html += _form_field(options['input_type'], id.to_sym, response ? ActiveSupport::JSON.decode(response.data) : nil, opts)
    end

    html.html_safe
  end

  def t(*a)
    _(*a)
  end

  def lookup_ip
    if request.remote_ip == '127.0.0.1' || request.remote_ip == '::1'
      session['remote_ip'] || (session['remote_ip'] = open("http://checkip.dyndns.org").first.gsub(/^.*\s([\d\.]+).*$/s, '\1').gsub(/[^\.\d]/, ''))
    else
      request.remote_ip
    end
  end

  def get_remote_location
    Geocoder.search(session['remote_ip'] || (session['remote_ip'] = open("http://checkip.dyndns.org").first.gsub(/^.*\s([\d\.]+).*$/s, '\1').gsub(/[^\.\d]/, '')), language: 'en').first
  end

  def lookup_ip_location
    begin
      if is_test? && ApplicationController::get_location.present?
        Geocoder.search(ApplicationController::get_location, language: 'en').first
      elsif request.remote_ip == '127.0.0.1' || request.remote_ip == '::1'
        get_remote_location
      else
        request.location || get_remote_location
      end
    rescue
      nil
    end
  end

  def hash_to_html_attributes(hash, prefix = '')
    attributes = ''
    if hash
      hash.each { |k,v|
        k = k.to_s
        if v
          if v.is_a?(Hash)
            attributes += hash_to_html_attributes(v, 'data-')
          else
            attributes += " #{k}=\"" + (v.is_a?(Array) ? v.join(' ') : v) + '"'
          end
        end
      }
    end
    attributes
  end

  def icon(id, attributes = nil)
    ('<svg' + hash_to_html_attributes(attributes) + '><use xlink:href="/assets/icons.svg#bb-icon-' + id + '"></use></svg>').html_safe
  end

  def static_map(location, zoom, width, height)
    require 'fileutils'
    local_file_name = "#{location}-#{width}x#{height}z#{zoom}.png"
    file = File.join("public", "maps/#{local_file_name}")
    FileUtils.mkdir_p("public/maps") unless File.directory?("public/maps")
    if !File.exist?(file)
      url = "https://maps.googleapis.com/maps/api/staticmap?center=#{location}&zoom=#{zoom}&size=#{width}x#{height}&maptype=roadmap&markers=size:small%7C#{location}&key=AIzaSyAH7U8xUUb8IwDPy1wWuYGprzxf4E1Jj4o"
      require 'open-uri'
      open(file, 'wb') do |f|
        f << open(url).read
      end
    end

    cdn("/maps/#{local_file_name}")
  end

  def cdn(file)
    (Rails.application.config.action_controller.asset_host || '') + file
  end

  def is_production?
    Rails.env == 'production' || Rails.env == 'preview'
  end

  def is_test?
    Rails.env == 'test'
  end

  def subdomain
    request.env['SERVER_NAME'].gsub(/^(\w+)\..*$/, '\1')
  end

  def is_test_server?
    subdomain == 'test'
  end

  def rand_hash(length = 16, model = nil, field = nil)
    if field
      hash = rand_hash(length)
      while !model.to_s.to_s.singularize.classify.constantize.find_by(field => hash).nil?
        hash = rand_hash(length)
      end
    end
    rand(36**length).to_s(36)
  end

  def get_panoramio_image(location)
    if is_test?
      params[:image] = 'panoramio.jpg'
      params[:attribution_id] = 1234
      params[:attribution_user_id] = 5678
      params[:attribution_name] = 'Some Guy'
      params[:attribution_src] = 'panoramio'
      return params
    end

    location = location.city + ', ' + (location.territory ? location.territory + ' ' : '') + location.country
    $panoramios ||= Hash.new
    $panoramios[location] ||= 0
    $panoramios[location] += 1
    result = Geocoder.search(location, language: 'en').first
    if result
      points = Geocoder::Calculations.bounding_box([result.latitude, result.longitude], 5, { :unit => :km })
      options = {:set => :public, :size => :original, :from => 0, :to => 20, :mapfilter => false, :miny => points[0], :minx => points[1], :maxy => points[2], :maxx => points[3]}
      url = 'http://www.panoramio.com/map/get_panoramas.php?' + options.to_query
      response = JSON.parse(open(url).read)
      response['photos'].each { |img|
        if img['width'].to_i > 980
          if Organization.find_by(:cover_attribution_id => img['photo_id'], :cover_attribution_src => 'panoramio').nil? && Conference.find_by(:cover_attribution_id => img['photo_id'], :cover_attribution_src => 'panoramio').nil?
            params[:image] = img['photo_file_url']
            params[:attribution_id] = img['photo_id']
            params[:attribution_user_id] = img['owner_id']
            params[:attribution_name] = img['owner_name']
            params[:attribution_src] = 'panoramio'
            return params
          end
        end
      }
    end
    return nil
  end

  def get_secure_info(name)
    YAML.load(File.read(Rails.root.join("config/#{name.to_s}.yml")))[Rails.env].symbolize_keys
  end

  def location(location, locale = I18n.locale)
    return nil if location.blank?

    city = nil
    region = nil
    country = nil
    if location.is_a?(Location) || location.is_a?(City)
      country = location.country
      region = location.territory
      city = location.city
    elsif location.data.present? && location.data['address_components'].present?
      component_map = {
        'locality' => :city,
        'administrative_area_level_1' => :region,
        'country' => :country
      }
      location.data['address_components'].each do | component |
        types = component['types']
        country = component['short_name'] if types.include? 'country'
        region = component['short_name'] if types.include? 'administrative_area_level_1'
        city = component['long_name'] if types.include? 'locality'
      end
    else
      country = location.data['country_code']
      region = location.data['region_code']
      city = location.data['city']
    end

    # we need cities for our logic, don't let this continue if we don't have one
    return nil unless city.present?

    hash = Hash.new
    region_translation = region.present? && country.present? ? _("geography.subregions.#{country}.#{region}", locale: locale) : ''
    country_translation = country.present? ? _("geography.countries.#{country}", locale: locale) : ''
    hash[:city] = _!(city) if city.present?
    hash[:region] = region_translation if region_translation.present?
    hash[:country] = country_translation if country_translation.present?

    # return the formatted location or the first value if we only have one value
    return hash.length > 1 ? _("geography.formats.#{hash.keys.join('_')}", locale: locale, vars: hash) : hash.values.first
  end

  def location_link(location)
    return '' unless location.present? && location.address.present?
    content_tag(:a, (_!location.address), href: "http://www.google.com/maps/place/#{location.latitude},#{location.longitude}")
  end

  def same_city?(location1, location2)
    return false unless location1.present? && location2.present?

    location1 = location(location1) unless location1.is_a?(String)
    location2 = location(location2) unless location2.is_a?(String)

    location1.eql? location2
  end

  def show_errors(field, value = nil)
    return '' unless @errors && @errors[field].present?

    error_txt = _"errors.messages.fields.#{field.to_s}.#{@errors[field]}", :s, vars: { value: value }
    
    "<div class=\"field-error\">#{error_txt}</div>".html_safe
  end

  def nav_link(link, title = nil, class_name = nil)
    if title.nil? && link.is_a?(Symbol)
      title = link
      link = send("#{link.to_s}_path")
    end
    if class_name.nil? && title.is_a?(Symbol)
      class_name = title
    end
    title = _"page_titles.#{title.to_s.titlecase.gsub(/\s/, '_')}"
    classes = []
    classes << class_name if class_name.present?
    classes << "strlen-#{strip_tags(title).length}"
    classes << 'current' if request.fullpath.start_with?(link.gsub(/^(.*?)\/$/, '\1'))
    link_to "<span class=\"title\">#{title}</span>".html_safe, link, :class => classes
  end

  def date(date, format = :long)
    I18n.l(date.is_a?(String) ? Date.parse(date) : date, :format => format)
  end

  def time(time, format = :short)
    if time.is_a?(String)
      time = Date.parse(time)
    elsif time.is_a?(Float) || time.is_a?(Integer)
      time = DateTime.now.midnight + time.hours
    end
        
    I18n.l(time, :format => format)
  end

  def date_span(date1, date2)
    key = 'same_month'
    if date1.year != date2.year
      key = 'different_year'
    elsif date1.month != date2.month
      key = 'same_year'
    end
    d1 = I18n.l(date1.to_date, format: "span_#{key}_date_1".to_sym)
    d2 = I18n.l(date2.to_date, format: "span_#{key}_date_2".to_sym)
    _('date.date_span', vars: {:date_1 => d1, :date_2 => d2})
  end

  def time_length(length)
    hours = length.to_i
    minutes = ((length - hours) * 60).to_i
    hours = hours > 0 ? (I18n.t 'datetime.distance_in_words.x_hours', count: hours) : nil
    minutes = minutes > 0 ? (I18n.t 'datetime.distance_in_words.x_minutes', count: minutes) : nil
    return hours.present? ? (minutes.present? ? (I18n.t 'datetime.distance_in_words.x_and_y', x: hours, y: minutes) : hours) : minutes
  end

  def hour_span(time1, time2)
    (time2 - time1) / 3600
  end

  def hours(time1, time2)
    time_length hour_span(time1, time2)
  end

  def generate_confirmation(user, url, expiry = nil)
    ApplicationController::generate_confirmation(user, url, expiry)
  end

  def money(amount)
    return _!('$0.00') if amount == 0
    _!((amount * 100).to_i.to_s.gsub(/^(.*)(\d\d)$/, '$\1.\2'))
  end

  def percent(p)
    return _!('0.00%') if p == 0
    _!((p * 10000).to_i.to_s.gsub(/^(.*)(\d\d)$/, '\1.\2%'))
  end

  def data_set(header_type, header_key, attributes = {}, &block)
    raw_data_set(header_type, _(header_key), attributes, &block)
  end

  def raw_data_set(header_type, header, attributes = {}, &block)
    attributes[:class] = attributes[:class].split(' ') if attributes[:class].is_a?(String)
    attributes[:class] = [attributes[:class].to_s] if attributes[:class].is_a?(Symbol)
    attributes[:class] ||= []
    attributes[:class] << 'data-set'
    content_tag(:div, attributes) do
      content_tag(header_type, header, class: 'data-set-key') +
      content_tag(:div, class: 'data-set-value', &block)
    end
  end

  def conference_days_options(conference = nil)
    conference ||= @this_conference || @conference
    return [] unless conference

    dates = []
    day = conference.start_date - 7.days
    last_day = conference.end_date + 7.days

    while day <= last_day
      dates << day
      day += 1.day
    end

    return dates
  end

  def conference_days_options_list(period, conference = nil, format = nil)
    conference ||= @this_conference || @conference
    return [] unless conference

    days = []

    conference_days_options(conference).each do |day|
      belongs_to_periods = []
      belongs_to_periods << :before if day <= conference.start_date
      belongs_to_periods << :after if day >= conference.end_date
      belongs_to_periods << :before_plus_one if day <= (conference.start_date + 1.day)
      belongs_to_periods << :after_minus_one if day >= (conference.end_date - 1.day)
      belongs_to_periods << :during if day >= conference.start_date && day <= conference.end_date
      days << [date(day.to_date, format || :span_same_year_date_1), day.to_date] if belongs_to_periods.include?(period)
    end
    return days
  end

  def registration_status_options_list(conference = nil)
    conference ||= @this_conference || @conference
    return [] unless conference

    options = Array.new
    [:closed, :pre, :open].each do | opt |
      options << [(_"forms.labels.generic.registration_statuses.#{opt}"), opt]
    end

    return options
  end

  def month_select(value = nil, args = {})
    options = (1..12).to_a.map { |month| [ (I18n.t "date.#{args[:format] || 'month_names'}")[month], month ] }
    selectfield args[:name] || :month, value, options, args
  end

  def month_day_select(value = nil, args = {})
    options = (1..31).to_a.map { |day| [ day, day ] }
    selectfield args[:name] || :month_day, value, options, args
  end

  def day_select(value = nil, args = {})
    selectfield :day, value, conference_days_options_list(:during, nil, args[:format]), args
  end

  def hour_select(value = nil, args = {}, start_time = 8, end_time = 23.5, step = 0.5)
    time = start_time
    times = []
    while time <= end_time
      times << [time(DateTime.now.midnight + time.hours), time]
      time += step
    end
    selectfield :time, value, times, args
  end

  def length_select(value = nil, args = {}, min_length = 0.5, max_length = 6, step = 0.5)
    length = min_length
    lengths = []
    while length <= max_length
      lengths << [time_length(length), length]
      length += step
    end
    selectfield :time_span, value, lengths, args
  end

  def contact_reason_select
    reasons = []
    [:website, :conference].each do | reason |
      reasons << [ _("forms.labels.generic.reasons.#{reason.to_s}"), reason ]
    end
    [['Something about the website', :website]]
    selectfield :reason, nil, reasons, required: true, heading: 'articles.contact.headings.reason', label: false, full: true
  end

  def block_select(value = nil, args = {})
    blocks = {}
    @workshop_blocks.each_with_index do | info, block |
      info['days'].each do | day |
        blocks[(day.to_i * 10) + block] = [ "#{(I18n.t 'date.day_names')[day.to_i]} Block #{block + 1}", "#{day}:#{block}" ]
      end
    end
    selectfield :workshop_block, value, blocks.sort.to_h.values, args
  end

  def location_select(value = nil, args = {})
    locations = []
    if @this_conference.event_locations.present?
      @this_conference.event_locations.each do | location |
        locations << [ location.title, location.id ] unless ((args[:invalid_locations] || []).include? location.id)
      end
    end
    selectfield :event_location, value, locations, args
  end

  def location_name(id)
    begin
      location = EventLocation.find(id)
    rescue
      return ''
    end
    return '' unless location.present?
    return location.title
  end

  def host_options_list(hosts)
    options = [[nil, nil]]
    hosts.each do | id, registration |
      options << [registration.user.name, id]
    end
    return options
  end

  def registration_step_menu
    steps = current_registration_steps(@registration)
    return '' unless steps.present? && steps.length > 1

    pre_registration_steps = ''
    post_registration_steps = ''
    post_registration = false

    steps.each do | step |
      text = _"articles.conference_registration.headings.#{step[:name].to_s}"
      
      if step[:name] == :workshops
        post_registration = true
      end

      h = content_tag :li, class: [step[:enabled] ? :enabled : nil, @register_template == step[:name] ? :current : nil, post_registration ? :post : :pre].compact do
        if step[:enabled]
          content_tag :div, (link_to text, register_step_path(@this_conference.slug, step[:name])).html_safe, class: :step
        else
          content_tag :div, text, class: :step
        end
      end

      if post_registration
        post_registration_steps += h.html_safe
      else
        pre_registration_steps += h.html_safe
      end
    end

    html = (
      row class: 'flow-steps' do
        columns do
          (content_tag :ul, id: 'registration-steps' do
            pre_registration_steps.html_safe +
            post_registration_steps.html_safe
          end).html_safe
        end
      end
    )

    return html.html_safe
  end

  def broadcast_to(to, conference = nil)
    conference ||= @this_conference || @conference

    users = []
    
    case to.to_sym
    when :registered
      ConferenceRegistration.where(conference_id: conference.id).each do | r |
        users << r.user if ((r.steps_completed || []).include? 'questions') && r.user.present? && r.is_attending != 'n'
      end
    when :pre_registered
      ConferenceRegistration.where(conference_id: conference.id).each do | r |
        users << r.user if registration_status(r) == :preregistered && r.is_attending != 'n'
      end
    when :workshop_facilitators
      user_hash = {}
      Workshop.where(conference_id: conference.id).each do | w |
        w.active_facilitators.each do | u |
          user_hash[u.id] ||= u if u.present?
        end
      end
      users = user_hash.values
    when :unregistered
      ConferenceRegistration.where(conference_id: conference.id).each do | r |
        users << r.user if registration_status(r) == :unregistered && r.is_attending != 'n'
      end
    when :housing_providers
      ConferenceRegistration.where(conference_id: conference.id, can_provide_housing: true).each do | r |
        users << r.user if r.user.present?
      end
    when :guests
      ConferenceRegistration.where(conference_id: conference.id, housing: 'house').each do | r |
        users << r.user if r.user.present? && r.is_attending != 'n'
      end
    when :all
      User.all.each do | u |
        users << u if u.present? && (u.is_subscribed.nil? || u.is_subscribed)
      end
    end
    
    puts "Users:"
    users.each do | u |
      puts "\t#{u.id}\t#{u.email}"
    end
    return users
  end

  def broadcast_options(conference = nil)
    conference ||= @this_conference || @conference

    options = [
      :registered,
      :pre_registered,
      :workshop_facilitators,
      :unregistered,
      :housing_providers,
      :guests,
      :all
    ]

    if conference.registration_status != :open
      options -= [:registered, :guests]
      options -= [:pre_registered] unless conference.registration_status != :pre
    end

    return options
  end

  def admin_steps # deprecated
    [:stats, :edit, :payment, :broadcast, :housing, :locations, :meals, :events, :workshop_times, :schedule]
  end

  def administration_steps
    {
      info: [:administrators, :dates, :description, :poster],
      payment: [:payment_message, :suggested_amounts, :paypal],
      registration: [:registration_status, :stats, :registrations, :broadcast],
      housing: [:providers, :housing],
      events: [:locations, :meals, :events],
      schedule: [:workshop_times, :schedule, :publish_schedule]
    }
  end

  def administration_sub_steps
    {
      location_edit: :locations,
      event_edit: :events,
      broadcast_sent: :broadcast
    }
  end

  def get_administration_group(administration_step)
    admin_step = administration_step.to_sym
    admin_step = administration_sub_steps[admin_step] if administration_sub_steps[admin_step].present?
    administration_steps.each do | group, steps |
      steps.each do | step |
        return group if step == admin_step
      end
    end

    return nil
  end

  def valid_admin_steps # deprecated
    admin_steps + [:broadcast_sent, :organizations]
  end

  def admin_menu
    steps = ''
    first = true
    admin_steps.each do | step |
      steps += content_tag(:li, class: (step.to_s == @admin_step ? :current : nil)) do
        link_to _("menu.submenu.admin.#{step.to_s.titlecase.gsub(/\s/, '_')}"), first ?
          register_step_path(@this_conference.slug, :administration) :
          administration_step_path(@this_conference.slug, step.to_s)
      end
      first = false
    end
    content_tag :ul, steps.html_safe, id: 'registration-admin-menu'
  end

  def admin_update_form(options = {}, &block)
    form_tag(administration_update_path(@this_conference.slug, @admin_step), options, &block)
  end

  def interest_button(workshop)
    interested = workshop.interested?(current_user) ? :remove_interest : :show_interest
    id = "#{interested.to_s.gsub('_', '-')}-#{workshop.id}"
    return (off_screen (_"forms.actions.aria.#{interested.to_s}"), id) + 
      (button_tag interested, :value => :toggle_interest, :class => (workshop.interested?(current_user) ? :delete : :add), aria: { labelledby: id })
  end

  def interest_text(workshop)
    if workshop.interested?(current_user)
      return _'articles.workshops.info.you_are_interested_count', :vars => {:count => (workshop.interested_count - 1)}
    end

    return _'articles.workshops.info.interested_count', :vars => {:count => workshop.interested_count}
  end

  def host_guests_table(registration)
    id = registration.id
    html = ''

    @housing_data[id][:guests].each do | area, guests |
      guest_rows = ''
      guests.each do | guest_id, guest |
        status_html = ''

        @housing_data[id][:guest_data][guest_id][:errors].each do | error, value |
          if value.is_a?(Array)
            value.each do | v |
              status_html += content_tag(:li, _("errors.messages.housing.space.#{error.to_s}", vars: v))
            end
          else
            status_html += content_tag(:li, _("errors.messages.housing.space.#{error.to_s}", vars: value))
          end
        end

        @housing_data[id][:guest_data][guest_id][:warnings].each do | error, value |
          if value.is_a?(Array)
            value.each do | v |
              status_html += content_tag(:li, _("warnings.messages.housing.space.#{error.to_s}", v))
            end
          else
            status_html += content_tag(:li, _("warnings.messages.housing.space.#{error.to_s}", vars: value))
          end
        end

        if status_html.present?
          status_html = content_tag(:ul, status_html.html_safe)
        end

        guest_rows += content_tag :tr, id: "hosted-guest-#{guest_id}" do
          (content_tag :td, guest[:guest].user.name) +
          (content_tag :td do
            (guest[:guest].city + 
            (content_tag :a, (_'actions.workshops.Remove'), href: '#', class: 'remove-guest', data: { guest: guest_id })).html_safe
          end) +
          (content_tag :td, status_html.html_safe, class: [:state, status_html.present? ? :unhappy : :happy])
        end
      end

      space_size = (@housing_data[id][:space][area] || 0)

      # add empty rows to represent empty guest spots
      for i in guests.size...space_size
        guest_rows += content_tag :tr, class: 'empty-space' do
          (content_tag :td, '&nbsp'.html_safe, colspan: 2) +
          (content_tag :td)
        end
      end

      status_html = ''
      if @housing_data[id][:warnings].present? && @housing_data[id][:warnings][:space].present? && @housing_data[id][:warnings][:space][area].present?
        @housing_data[id][:warnings][:space][area].each do | w |
          status_html += content_tag(:li, _("warnings.messages.housing.space.#{w.to_s}"))
        end
      end
      if status_html.present?
        status_html = content_tag(:ul, status_html.html_safe)
      end

      html += content_tag :tr do
        (content_tag :th, (_"forms.labels.generic.#{area}"), colspan: 2) +
        (content_tag :th, status_html.html_safe, class: [:state, status_html.present? ? :unhappy : :happy])
      end
      html += guest_rows
      html += content_tag :tr, class: 'place-guest' do
        content_tag :td, class: guests.size >= space_size ? 'full' : nil, colspan: 3 do
          content_tag :a, (_'forms.actions.generic.place_guest'), class: 'select-guest', href: '#', data: { host: id, space: area }
        end
      end
    end

    content_tag :table, html.html_safe, class: 'host-table'
  end

  def get_housing_match(host, guest, space)
    housing_data = guest.housing_data || []
    
    if housing_data['host'].present?
      if housing_data['host'] == host.id
        return space == housing_data['space'] ? :selected_space : :other_space
      end

      return :other_host
    end

    if space_matches?(space, guest.housing) && available_dates_match?(host, guest)
      return :good_match
    end

    return :bad_match
  end

  def get_workshop_match(workshop, day, block, location)
    if workshop.event_location_id.present? && workshop.present?
      if (Date.parse params[:day]).wday == workshop.block['day'] && block == workshop.block['block'].to_i
        return :selected_space
      end

      if location.present? && location.id == workshop.event_location_id
        return :other_space
      end

      return :other_host
    end

    if location.present?
      needs = JSON.parse(workshop.needs || '[]').map &:to_sym
      amenities = JSON.parse(location.amenities || '[]').map &:to_sym

      if (needs & amenities).length < needs.length
        return :bad_match
      end
    end

    (((((@schedule[@day] || {})[:times] || {})[@time] || {})[:item] || {})[:workshops] || {}).each do | l, w |
      if w[:workshop].id != workshop.id
        f_a = w[:workshop].active_facilitators.map { | f | f.id }
        f_b = workshop.active_facilitators.map { | f | f.id }
        if (f_a & f_b).present?
          return :bad_match
        end
      end
    end

    # housing_data = guest.housing_data || []
    
    # if housing_data['host'].present?
    #   if housing_data['host'] == host.id
    #     return space == housing_data['space'] ? :selected_space : :other_space
    #   end

    #   return :other_host
    # end

    # if space_matches?(space, guest.housing) && available_dates_match?(host, guest)
    #   return :good_match
    # end

    # return :bad_match
    return :good_match
  end

  def space_matches?(host_space, guest_space)
    return false unless host_space.present? && guest_space.present?

    if host_space.to_s == 'bed_space' || host_space.to_s == 'floor_space'
      return guest_space.to_s == 'house'
    end

    return host_space.to_s == 'tent_space' && guest_space.to_s == 'tent'
  end

  def available_dates_match?(host, guest)
    return false unless host.housing_data['availability'].present? && host.housing_data['availability'][1].present?
    if host.housing_data['availability'][0] <= guest.arrival &&
      host.housing_data['availability'][1] >= guest.departure
      return true
     end

     return false
  end
  
  def host_guests_widget(registration)
    html = ''
    classes = ['host']

    id = registration.id
    @housing_data[id][:guests].each do | area, guests |
      max_space = @housing_data[id][:space][area] || 0
      area_name = (_"forms.labels.generic.#{area}")
      status_html = ''
      if @housing_data[id][:warnings].present? && @housing_data[id][:warnings][:space].present? && @housing_data[id][:warnings][:space][area].present?
        @housing_data[id][:warnings][:space][area].each do | w |
          status_html += content_tag(:div, _("warnings.housing.space.#{w.to_s}"), class: 'warning')
        end
      end
      space_html = content_tag(:h5, area_name + _!(" (#{guests.size.to_s}/#{max_space.to_s})") + status_html.html_safe)
      guest_items = ''
      guests.each do | guest_id, guest |
        guest_items += content_tag(:li, guest[:guest].user.name, id: "hosted-guest-#{guest_id}")
      end
      space_html += content_tag(:ul, guest_items.html_safe)
      space_html += button_tag :place_guest, type: :button, value: "#{area}:#{id}", class: [:small, 'place-guest', 'on-top-only', guests.size >= max_space ? (guests.size > max_space ? :overbooked : :booked) : nil, max_space > 0 ? nil : :unwanted] 
      html += content_tag(:div, space_html, class: [:space, area, max_space > 0 || guests.size > 0 ? nil : 'on-top-only'])
    end

    classes << 'status-warning' if @housing_data[id][:warnings].present?
    classes << 'status-error' if @housing_data[id][:errors].present?
    
    return { html: html.html_safe, class: classes.join(' ') }
  end

  def signin_link
    @login_dlg ||= true
    link_to (_'forms.actions.generic.login'), settings_path, data: { 'sign-in': true }
  end

  def link_with_confirmation(link_text, confirmation_text, path, args = {})
    @confirmation_dlg ||= true
    args[:data] ||= {}
    args[:data][:confirmation] = true
    link_to path, args do
      (link_text.to_s + content_tag(:template, confirmation_text, class: 'message')).html_safe
    end
  end

  def link_info_dlg(link_text, info_text, info_title, args = {})
    @info_dlg ||= true
    args[:data] ||= {}
    args[:data]['info-title'] = info_title
    args[:data]['info-text'] = true
    content_tag(:a, args) do
      (link_text.to_s + content_tag(:template, info_text, class: 'message')).html_safe
    end
  end

  def button_with_confirmation(button_name, confirmation_text = nil, args = {})
    if confirmation_text.is_a? Hash
      args = confirmation_text
      confirmation_text = nil
    end
    
    confirmation_text ||= (_"forms.confirmations.#{button_name.to_s}", :p)
    @confirmation_dlg ||= true
    args[:data] ||= {}
    args[:data][:confirmation] = true
    button_tag button_name, args do
      ((_"forms.actions.generic.#{button_name.to_s}") + content_tag(:template, confirmation_text, class: 'message')).html_safe
    end
  end

  def richtext(text, reduce_headings = 2)
    return '' unless text.present?
    return _!(text).
      gsub(/<(\/?)h4>/, '<\1h' + (reduce_headings + 4).to_s + '>').
      gsub(/<(\/?)h3>/, '<\1h' + (reduce_headings + 3).to_s + '>').
      gsub(/<(\/?)h2>/, '<\1h' + (reduce_headings + 2).to_s + '>').
      gsub(/<(\/?)h1>/, '<\1h' + (reduce_headings + 1).to_s + '>').
      html_safe
  end

  def truncate(text)
    strip_tags(text.gsub('>', '> ')).gsub(/^(.{40,60})\s.*$/m, '\1&hellip;').html_safe
  end

  def translate_fields(object, field_options = {}, options = {})
    html = ''
    nav = ''

    # set the selected locale
    selected_locale = (options[:locale] || object.locale || I18n.locale).to_sym

    I18n.backend.enabled_locales.each do | locale |
      # ses if this should b the selected field
      class_name = selected_locale == locale.to_sym ? 'selected' : nil

      # add the locale to the nav
      nav += content_tag(:li,
          content_tag(:a, _("languages.#{locale}"), href: 'javascript:void(0)'),
        class: class_name, data: { locale: locale }).html_safe

      fields = ''
      field_options.each do | name, __options |
        _options = __options.deep_dup
        # add the field
        value = object.is_a?(Hash) ? object[locale.to_sym] : object.get_column_for_locale!(name, locale, false)

        # use the default value if we need to
        if _options[:default].present? && value.blank?
          value = _(_options[:default], locale: locale)
        end

        _options[:index] = locale
        _options[:lang] = locale
        _options[:parent_options] = { lang: locale }
        type = "#{_options[:type].to_s}"
        _options.delete(:type)

        fields += self.send(type, name, value, _options).html_safe
      end

      html += content_tag(:li, fields.html_safe, class: class_name, data: { locale: locale }).html_safe
    end

    if options[:class].nil?
      options[:class] = []
    elsif options[:class].is_a?(String)
      options[:class] = [options[:class]]
    end
    options[:class] += ['translator', 'multi-field-translator']

    (fieldset(nil, options) do
      content_tag(:ul, nav.html_safe, class: 'locale-select').html_safe + 
      content_tag(:ul, html.html_safe, class: 'text-editors').html_safe
    end).html_safe
  end

  def translate_textarea(name, object, property = nil, options = {})
    html = ''
    nav = ''

    # see if options was passed in as property
    if options.blank? && property.is_a?(Hash)
      options = property
      property = nil
    end

    # set the selected locale
    selected_locale = (options[:locale] || object.locale || I18n.locale).to_sym

    I18n.backend.enabled_locales.each do | locale |
      # ses if this should b the selected field
      class_name = selected_locale == locale.to_sym ? 'selected' : nil

      # add the locale to the nav
      nav += content_tag(:li,
          content_tag(:a, _("languages.#{locale}"), href: 'javascript:void(0)'),
        class: class_name, data: { locale: locale }).html_safe
      
      # add the field
      value = object.is_a?(Hash) ? object[locale.to_sym] : object.get_column_for_locale!(name, locale, false)

      # use the default value if we need to
      if options[:default].present? && value.blank?
        value = _(options[:default], locale: locale)
      end

      html += content_tag(:li, textarea(name, value, {
          label: false,
          edit_on: options[:edit_on],
          parent_options: {
            lang: locale
          },
          index: locale
        }).html_safe, class: class_name, data: { locale: locale }).html_safe
    end

    if options[:class].nil?
      options[:class] = []
    elsif options[:class].is_a?(String)
      options[:class] = [options[:class]]
    end
    options[:class] += ['translator']

    (fieldset(name, options) do
      content_tag(:ul, nav.html_safe, class: 'locale-select').html_safe + 
      content_tag(:ul, html.html_safe, class: 'text-editors').html_safe
    end).html_safe
  end

  def textarea(name, value = nil, options = {})
    id = unique_id(name)
    label_id = "#{id}-label"
    description_id = nil
    html = ''

    if options[:heading].present?
      label_id = "#{name.to_s}-label" unless options[:label]
      html += content_tag(:h3, _(options[:heading], :t, vars: options[:vars] || {}), id: label_id)
    end

    if options[:label] == false
      label_id = options[:labelledby]
    elsif options[:label].present?
      html += label_tag([name, id], nil, id: label_id) do
        _(options[:label], :t, vars: options[:vars] || {})
      end
    else
      html += label_tag([name, id], nil, id: label_id)
    end

    if options[:help].present?
      description_id ||= "#{id}-desc"
      html += content_tag(:div, _(options[:help], :s, 2), id: description_id, class: 'input-field-help')
    end

    if options[:warning].present?
      description_id ||= "#{id}-desc"
      html += content_tag(:div, _(options[:warning], :s, 2), id: description_id, class: 'warning-info')
    end

    aria = {}
    aria[:labelledby] = label_id if label_id.present?
    aria[:describedby] = description_id if description_id.present?
    css_class = [
        options[:short] === true ? :short : nil
      ].compact

    html_name = name.to_s + (options[:index] ? "[#{options[:index]}]" : '')
    if options[:plain]
      html += (text_area_tag html_name, value,
        id: id,
        lang: options[:lang],
        aria: aria,
        class: css_class
        )
    else
      html += content_tag(:div, value.present? ? value.html_safe : '',
          id: id,
          data: { name: html_name, 'edit-on': options[:edit_on] || :load },
          lang: options[:lang],
          aria: aria,
          tabindex: 0,
          class: [:textarea] + css_class
        )

      add_stylesheet :editor
      add_inline_script :pen
      add_inline_script :markdown
      add_inline_script :editor
    end

    parent_options = options[:parent_options] || {}
    if parent_options[:class].nil?
      parent_options[:class] = []
    elsif parent_options[:class].is_a?(String)
      parent_options[:class] = [parent_options[:class]]
    end

    parent_options[:class] += ['text-area-field', 'input-field']
    html = content_tag(:div, html.html_safe, parent_options).html_safe
    html += _original_content(options[:original_value], options[:original_lang]) if options[:original_value].present?

    return html.html_safe
  end

  def fieldset(name = nil, options = {}, &block)
    html = ''
    label = ''
    description = ''
    description_id = nil
    errors = ''

    if name.present?
      if options[:label] != false
        label = content_tag(:legend,
          _((
            options[:label].is_a?(String) ?
            options[:label] :
            "forms.labels.generic.#{name}"), :t, vars: options[:vars] || {}))
      end

      if options[:help].present?
        description_id = unique_id("#{name.to_s}-desc")
        description = content_tag(:div, _(options[:help], :s, 2), class: 'input-field-help', id: description_id)
      end

      errors = (show_errors name)
    end

    html = label + errors + description + content_tag(:div, class: :fieldgroup, &block)

    aria = description_id.present? ? { describedby: description_id } : nil
    (content_tag(:fieldset, html.html_safe,
        aria: aria,
        class: ((options[:class] || []) + [
            options[:inline] ? :inline : nil,
            options[:inline_label] ? 'inline-label' : nil,
            errors.present? ? 'has-error' : nil
          ]).compact
      )
    ).html_safe
  end

  def selectfield(name, value, select_options, options = {})
    unless select_options.first.is_a?(Array)
      so = select_options
      select_options = []
      so.each do | opt |
        select_options << [ I18n.t("forms.options.#{name.to_s}.#{opt.to_s}"), opt]
      end
    end
    textfield(name, value, options.merge({type: :select, options: select_options}))
  end

  def telephonefield(name, value, options = {})
    textfield(name, value, options.merge({type: :telephone}))
  end

  def numberfield(name, value, options = {})
    textfield(name, value, options.merge({type: :number}))
  end

  def searchfield(name, value, options = {})
    textfield(name, value, options.merge({type: :search}))
  end

  def userfield(name, value, options = {})
    # eventually this will be a dynamic field to find users, for now we'll just use emails
    # add_inline_script :userfield
    emailfield(name, value, options)# .merge({
    #    parent_options: { class: ['user-field'] },
    #    after: content_tag(:div, '', class: 'user-name')
    #  }))
  end

  def emailfield(name, value, options = {})
    textfield(name, value, options.merge({type: :email}))
  end

  def filefield(name, value, options = {})
    textfield(name, value, options.merge({type: :file}))
  end

  def passwordfield(name, value, options = {})
    textfield(name, value, options.merge({type: :password}))
  end

  def textfield(name, value, options = {})
    html = ''
    id = unique_id(name)
    html_name = name.to_s + (options[:index] ? "[#{options[:index]}]" : '')
    description_id = nil
    
    if options[:heading].present?
      description_id ||= "#{id.to_s}-desc"
      html += content_tag(:h3, _(options[:heading], :t, vars: options[:vars] || {}), id: description_id)
    end

    if options[:help].present?
      description_id ||= "#{id.to_s}-desc"
      html += content_tag(:div, _(options[:help], :s, 2, vars: options[:vars] || {}), class: 'input-field-help', id: description_id)
    end

    html += show_errors name, value

    inside_label = ''

    if options[:type] == :file
      inside_label = (content_tag(:div, class: 'file-field-selector') do
        (options[:preview] ? content_tag(:img, nil, src: value.present? ? value.url : nil).html_safe : '').html_safe +
        content_tag(:div, (value.present? ? File.basename(value.url) : (_'forms.labels.generic.no_file_selected')), class: 'file-field-name ' + (value.present? ? 'selected' : 'unselected')).html_safe +
        content_tag(:a, (_'forms.actions.generic.select_file'), class: :button)
      end)
    end

    label_text = nil
    if options[:label].present?
      label_text = _(options[:label], :t, vars: options[:vars] || {})
    elsif options[:label] != false
      label_text = (_"forms.labels.generic.#{name}")
    elsif options[:type] == :select || options[:type] == :file
      # add an empty label so that the drop down button will still appear
      label_text = ''
    end

    label_options = {}
    # let the label be selected if the input is hidden
    label_options[:tabindex] = 0 if options[:type] == :file

    unless label_text.nil?
      html += label_tag id, (label_text + inside_label).html_safe
    end

    input_options = {
        id: id,
        required: options[:required],
        lang: options[:lang],
        min: options[:min],
        max: options[:max],
        step: options[:step],
        aria: description_id ? { describedby: description_id } : nil
      }

    case name
    when :address
      input_options[:autocomplete] = 'address-line1'
    when :name
      input_options[:autocomplete] = 'name'
    when :location
      input_options[:autocomplete] = 'address-level2'
    when :email
      input_options[:autocomplete] = 'email'
    when :phone
      input_options[:autocomplete] = 'tel'
    when :paypal_email_address, :paypal_username, :paypal_password, :paypal_signature
      input_options[:autocomplete] = 'off'
    end

    case options[:type]
    when :select
      option_list = options_for_select(options[:options], value)

      # make sure that we have an empty option if the select is required
      if options[:required] && options[:options].first.present? && options[:options].first.last.present?
        option_list = ('<option value="">&nbsp;</option>' + option_list).html_safe
      end
      html += select_tag(html_name, option_list, input_options)
    when :file
      add_inline_script :filefield
      input_options[:tabindex] = '-1'
      html += off_screen(file_field_tag html_name, input_options)
    else
      input_options[:autocomplete] = 'off' if options[:type] == :search
      html += send("#{(options[:type] || :text).to_s}_field_tag", html_name, value, input_options)
    end

    if options[:after].present?
      html += options[:after].html_safe
    end

    html = content_tag(:div, html.html_safe,
        class: [
          "#{(options[:type] || :text).to_s}-field",
          'input-field',
          value.present? ? nil : 'empty',
          options[:big] ? 'big' : nil,
          options[:small] ? 'small' : nil,
          options[:stretch] ? 'stretch-item' : nil,
          options[:full] ? 'full' : nil,
          options[:inline_label] ? 'inline-label' : nil,
          (@errors || {})[name].present? ? 'has-error' : nil
      ].compact + (((options[:parent_options] || {})[:class]) || []))

    html += _original_content(options[:original_value], options[:original_lang]) if options[:original_value].present?

    return html.html_safe
  end

  def radiobuttons(name, boxes, value, label_key, options = {})
    checkboxes(name, boxes, [value], label_key, options.merge({radiobuttons: true}))
  end

  def checkbox(name, value, label_key, options = {})
    checkboxes(name, [true], value, label_key, options)
  end

  def unique_id(id)
    id = id.to_s.gsub('[', '_').gsub(']', '')

    @_ids ||= {}
    @_ids[id] ||= 0

    new_id = id
    
    if @_ids[id] > 0
      new_id += "--#{@_ids[id]}"
    end

    @_ids[id] += 1

    return new_id
  end

  def checkboxes(name, boxes, values, label_key, options = {})
    html = ''

    label_id = nil
    description_id = nil

    if options[:heading].present?
      label_id ||= unique_id("#{name.to_s}-label")
      html += content_tag(:h3, _(options[:heading], :t, vars: options[:vars] || {}), id: label_id)
    end

    help = nil

    if options[:help].present?
      description_id ||= unique_id("#{name.to_s}-desc")
      help = content_tag(:div, _(options[:help], :s, 2), class: 'input-field-help', id: description_id)
    end

    html += help if help.present? && !options[:right_help]

    boxes_html = ''

    labels = nil
    is_single = !values.is_a?(Array)
    if boxes.length > 0
      if boxes.first.is_a?(Array)
        labels = boxes.map(&:first) 
        boxes = boxes.map(&:last)
      end
    elsif !boxes.first.is_a?(Integer)
      values = values.present? ? values.map(&:to_s) : [] unless is_single
      boxes = boxes.map(&:to_s)
    end

    # convert the required value into a pure boolean
    required = !!options[:required]

    boxes.each_with_index do | box, i |
      checked = (is_single ? values.present? : values.include?(box))
      values -= [box] if checked && !is_single
      id = nil
      if options[:radiobuttons].present?
        id = unique_id("#{name.to_s}_#{box}")
        boxes_html += radio_button_tag(name, box, checked, id: id, required: required)
      else
        _name = (is_single ? name : "#{name.to_s}[#{box}]")
        id = unique_id(_name)
        boxes_html += check_box_tag(_name, 1, checked, data: { toggles: options[:toggles] }.compact, id: id, required: required)
      end
      
      # we only need the required attribute on one element
      required = false

      if labels.present?
        label = labels[i]
      elsif is_single
        label = _(label_key.to_s)
      elsif box.is_a?(Integer)
        label = I18n.t(label_key.to_s)[box]
      else
        label = _("#{label_key.to_s}.#{box}")
      end
          
      boxes_html += label_tag(id, label)
    end

    if options[:other].present? && !is_single
      id = nil
      if options[:radiobuttons].present?
        id = unique_id("#{name.to_s}_other")
        boxes_html += radio_button_tag(name, :other, values.present?, id: id)
      else
        _name = "#{name.to_s}[other]"
        id = unique_id(_name)
        boxes_html += check_box_tag(_name, 1, values.present?, id: id)
      end
      boxes_html += label_tag id,
        content_tag(:div,
          text_field_tag("other_#{name.to_s}", values.first, placeholder: (_"#{label_key}.other"), required: values.present?),
          class: 'other')
    end

    html += content_tag(:fieldset, content_tag(:div, boxes_html.html_safe,
        class: [
          'check-box-field',
          'input-field',
          options[:vertical] ? 'vertical' : nil,
          options[:inline] ? 'inline' : nil,
          options[:small] ? 'small' : nil,
          options[:big] ? 'big' : nil
        ].compact).html_safe,
        aria: {
          labelledby: label_id,
          describedby: description_id
        },
        class: [
          options[:centered] ? 'centered' : nil,
          options[:right_help] ? 'right-help' : nil
        ].compact
      )

    html += help if help.present? && options[:right_help]

    return html.html_safe
  end

  def companion(registration)
    if registration.housing_data.present? && registration.housing_data['companions'].present? && registration.housing_data['companions'].first.present?
      companion_user = User.find_user(registration.housing_data['companions'].first)

      if companion_user.present?
        cr = ConferenceRegistration.where(user_id: companion_user.id).order(created_at: :desc).limit(1).first

        if cr.present? && ((cr.steps_completed || []).include? 'questions')
          return companion_user
        end
      end
      return :unregistered
    end
    return nil
  end

  def comment(comment)
    add_inline_script :time
    add_js_translation('datetime.distance_in_words')

    content_tag(:div, class: 'comment-body') do
      content_tag(:h4, comment.user.name, class: 'comment-title') +
      content_tag(:time, time(comment.created_at, :default), datetime: comment.created_at.to_s) +
      content_tag(:div, class: 'comment-text') do
        markdown comment.comment
      end
    end
  end

  def html_edit_table(excel_data, options = {})
    attributes = { class: options[:class], id: options[:id] }
    attributes[:data] = { 'update-url' => options[:editable] } if options[:editable].present?
    
    if options[:column_names].is_a? Hash
      return content_tag(:table, attributes) do
        max_columns = 0
        column_names = {}
        (content_tag(:thead) do
          headers = ''
          options[:column_names].each do | header_name, columns |
            column_names[header_name] ||= []
            headers += content_tag(:th, excel_data[:keys][header_name].present? ? _(excel_data[:keys][header_name]) : '', colspan: 2)
            row_count = columns.size
            columns.each do | column |
              column_names[header_name] << column
              if (options[:row_spans] || {})[column].present?
                row_count += (options[:row_spans][column] - 1)
                for i in 1...options[:row_spans][column]
                  column_names[header_name] << false
                end
              end
            end
            max_columns = row_count if row_count > max_columns
          end
          content_tag(:tr, headers.html_safe)
        end) + (content_tag(:tbody) do
          rows = ''

          for i in 0...max_columns
            columns_html = ''
            column_names.each do | header_name, columns |
              column = columns[i]
              if column.present?
                attributes = { class: [excel_data[:column_types][column]], data: { 'column-id' => column } }
                if (options[:row_spans] || {})[column].present?
                  attributes[:rowspan] = options[:row_spans][column]
                end
                columns_html += content_tag(:th, excel_data[:keys][column].present? ? _(excel_data[:keys][column]) : '', rowspan: attributes[:rowspan]) + 
                edit_column(nil, column, nil, attributes, excel_data, options)
              elsif column != false
                columns_html += content_tag(:td, ' ', colspan: 2, class: :empty)
              end
            end
            rows += content_tag(:tr, columns_html.html_safe, { class: 'always-edit', data: { key: '' } })
          end
          rows.html_safe
        end)
      end
    else
      return content_tag(:table, attributes) do
        (content_tag(:tbody) do
          rows = ''
          excel_data[:columns].each do |column|
            if (excel_data[:column_types] || {})[column] != :table && ((options[:column_names] || []).include? column)
              rows += content_tag(:tr, { class: 'always-edit', data: { key: '' } }) do
                attributes = { class: [excel_data[:column_types][column]], data: { 'column-id' => column } }
                columns = content_tag(:th, excel_data[:keys][column].present? ? _(excel_data[:keys][column]) : '') + 
                edit_column(nil, column, nil, attributes, excel_data, options)
              end
            end
          end
          rows.html_safe
        end)
      end
    end
  end

  def html_table(excel_data, options = {})
    options[:html] = true
    attributes = { class: options[:class], id: options[:id] }
    attributes[:data] = { 'update-url' => options[:editable] } if options[:editable].present?
    content_tag(:table, attributes) do
      (content_tag(:thead) do
        content_tag(:tr, excel_header_columns(excel_data))
      end) +
      content_tag(:tbody, excel_rows(excel_data, {}, options))
    end
  end

  def excel_table(excel_data)
    format_xls 'table' do
      workbook use_autowidth: true
      format bg_color: '333333'
      format 'td', font_name: 'Calibri', fg_color: '333333'
      format 'th', font_name: 'Calibri', b: true, bg_color: '333333', fg_color: 'ffffff'
      format 'th.sub-table', font_name: 'Calibri', b: true, bg_color: 'DDDDDD', fg_color: '333333'
      format 'td.datetime', num_fmt: 22, font_name: 'Courier New', sz: 10, fg_color: '333333'
      format 'td.date.day', num_fmt: 14, font_name: 'Courier New', sz: 10, fg_color: '333333'
      format 'td.money', num_fmt: 2, font_name: 'Courier New', sz: 10, fg_color: '333333'
      format 'td.number', font_name: 'Courier New', sz: 10, fg_color: '333333'
      format 'td.bold', font_name: 'Calibri', fg_color: '333333', b: true
    end

    content_tag(:table) do
      (content_tag(:thead) do
        content_tag(:tr, excel_header_columns(excel_data))
      end) +
      content_tag(:tbody, excel_rows(excel_data))
    end
  end

  def excel_header_columns(data, padding = {}, class_name = nil)
    columns = ''

    data[:columns].each do |column|
      unless data[:column_types].present? && data[:column_types][column] == :table
        columns += content_tag(:th, data[:keys][column].present? ? _(data[:keys][column]) : '', class: class_name)
      end
    end

    pad_columns(columns, padding, :th)
  end

  def excel_empty_row(data, padding = {})
    columns = ''

    data[:columns].each do |column|
      unless data[:column_types].present? && data[:column_types][column] == :table
        columns += content_tag(:td)
      end
    end

    content_tag(:tr, pad_columns(columns, padding))
  end

  def pad_columns(columns, padding, column_type = :td)
    left = ''

    for i in 1..(padding['left'] || 0)
      left += content_tag(:td)
    end

    right = ''
    for i in 1..(padding['right'] || 0)
      right += content_tag(:td)
    end

    (left + columns + right).html_safe
  end

  def excel_columns(row, data, padding = {}, options = {})
    columns = ''

    data[:columns].each do |column|
      value = row[column].present? ? (_!row[column].to_s) : ''
      class_name = nil
      is_sub_table = false

      if data[:column_types].present? && data[:column_types][column].present?
        if data[:column_types][column] == :table
          is_sub_table = true
        else
          class_name = data[:column_types][column]
        end
      end

      unless is_sub_table
        attributes = { class: [class_name] }
        if options[:html] && row[:html_values].present? && row[:html_values][column].present?
          value = row[:html_values][column]
        end
        
        if options[:editable]
          attributes[:data] = { 'column-id' => column }
        end

        if (options[:column_names] || []).include? column
          attributes[:tabindex] = 0
        end

        columns += content_tag(:td, value, attributes)
      end
    end

    pad_columns(columns, padding)
  end

  def editor_columns(row, data, padding = {}, options = {})
    columns = ''

    data[:columns].each do |column|
      value = row[column].present? ? (_!row[column].to_s) : ''
      class_name = nil
      is_sub_table = false

      if data[:column_types].present? && data[:column_types][column].present?
        if data[:column_types][column] == :table
          is_sub_table = true
        else
          class_name = data[:column_types][column]
        end
      end

      unless is_sub_table
        attributes = { class: [class_name] }
        
        if options[:editable]
          attributes[:data] = { 'column-id' => column }
        end

        if (options[:column_names] || []).include? column
          columns += edit_column(row, column, value, attributes, data, options)
        else
          columns += content_tag(:td, value, attributes)
        end

      end
    end

    pad_columns(columns, padding)
  end

  def edit_column(row, column, value, attributes, data, options)
    attributes[:class] << 'has-editor'
    raw_value = row.present? ? (row[:raw_values][column] || value) : nil

    if row.present? && options[:html] && row[:html_values].present? && row[:html_values][column].present?
      value = row[:html_values][column]
    end

    editor_attributes = { class: 'cell-editor', data: { value: raw_value.to_s } }

    # create the control but add the original value to set the width and height
    editor_value = content_tag(:div, value, class: 'value')
    if (options[:column_options] || {})[column].present?
      value = (editor_value.html_safe + select_tag(column, options_for_select([['', '']] + options[:column_options][column], raw_value), editor_attributes)).html_safe
    elsif data[:column_types][column] == :text
      editor_attributes[:name] = column
      value = (editor_value.html_safe + content_tag(:textarea, raw_value, editor_attributes)).html_safe
    else
      editor_attributes[:name] = column
      editor_attributes[:value] = raw_value
      editor_attributes[:required] = :required if (options[:required_columns] || []).include? column
      type = data[:column_types][column] || :unknown
      editor_attributes[:type] = { money: :number, number: :number, email: :email }[type] || :text
      value = (editor_value.html_safe + content_tag(:input, nil, editor_attributes)).html_safe
    end

    return content_tag(:td, value, attributes)
  end

  def excel_sub_tables(row, data, padding = {}, options = {})
    rows = ''

    # shift the table right
    new_padding = {
      'left' => (padding['right'] || 0) + 1,
      'right' => (padding['right'] || 0) - 1
    }

    data[:columns].each do |column|
      if data[:column_types].present? && data[:column_types][column] == :table
        rows += content_tag(:tr, excel_header_columns(row[column], new_padding, 'sub-table'))
        rows += excel_rows(row[column], new_padding)
        rows += excel_empty_row(row[column], new_padding)
      end

    end

    rows.html_safe
  end

  def excel_rows(data, padding = {}, options = {})
    rows = ''
    data[:data].each do |row|
      attributes = {}
      
      if options[:primary_key].present?
        attributes[:data] = { key: row[options[:primary_key]] }
      end

      attributes[:class] = []
      
      if options[:editable]
        attributes[:class] << :editable
      end
      
      rows += content_tag(:tr, excel_columns(row, data, padding, options), attributes) +
        excel_sub_tables(row, data, padding)
      rows += content_tag(:tr, editor_columns(row, data, padding, options), class: :editor) if options[:editable]
    end
    rows.html_safe
  end

  def registrations_edit_table_options
    {
      id: 'create-table',
      class: ['registrations', 'admin-edit', 'always-editing'],
      primary_key: :id,
      column_names: {
          contact_info: [
              :name,
              :email,
              :is_subscribed,
              :city,
              :preferred_language
            ] + User.AVAILABLE_LANGUAGES.map { |l| "language_#{l}".to_sym },
          questions: [
              :registration_fees_paid,
              :is_attending,
              :arrival,
              :departure,
              :housing,
              :bike,
              :food,
              :companion_email,
              :allergies,
              :other
            ],
          hosting: [
              :can_provide_housing,
              :address,
              :phone,
              :first_day,
              :last_day
            ] + ConferenceRegistration.all_spaces +
            ConferenceRegistration.all_considerations + [
              :notes
            ]
        },
      row_spans: {
          allergies: 3,
          other: 2
        },
      required_columns: [:name, :email],
      editable: administration_update_path(@this_conference.slug, @admin_step),
      column_options: @column_options
    }
  end

  def registrations_table_options
    {
      id: 'search-table',
      class: ['registrations', 'admin-edit'],
      primary_key: :id,
      column_names: [
          :registration_fees_paid,
          :is_attending,
          :is_subscribed,
          :city,
          :preferred_language,
          :arrival,
          :departure,
          :housing,
          :bike,
          :food,
          :companion_email,
          :allergies,
          :other,
          :can_provide_housing,
          :address,
          :phone,
          :first_day,
          :last_day,
          :notes
        ] +
        User.AVAILABLE_LANGUAGES.map { |l| "language_#{l}".to_sym } +
        ConferenceRegistration.all_spaces +
        ConferenceRegistration.all_considerations,
      editable: administration_update_path(@this_conference.slug, @admin_step),
      column_options: @column_options
    }
  end

  def potential_provider(registration)
    return false unless registration.present? && registration.city.present? && registration.conference.present?
    conditions = registration.conference.provider_conditions ||
                 Conference.default_provider_conditions
    return city_distance_less_than(registration.conference.city, registration.city,
                                   (conditions['distance']['number'] || '0').to_i,
                                   conditions['distance']['unit'])
  end

  def city_distance_less_than(city1, city2, max_distance, unit)
    return false if city1.nil? || city2.nil?
    return true if city1.id == city2.id
    return false if max_distance < 1
    return Geocoder::Calculations.distance_between(
      [city1.latitude, city1.longitude], [city2.latitude, city2.longitude],
      units: unit.to_sym) < max_distance
  end

  private
    def _original_content(value, lang)
      content_tag(:div, (
          content_tag(:h4, _('translate.content.Translation_of')) +
          content_tag(:div, value, class: 'value', lang: lang)
        ).html_safe, class: 'original-text')
    end

    def _form_field(type, name, value, options)
      if type == 'check_box'
        self.send(type + '_tag', name, "1", value, options)
      else
        self.send(type + '_tag', name, value, options)
      end
    end
end