refractor code into different files

app/helpers/format_helper.rb

@@ -0,0 +1,202 @@
+module FormatHelper
+  ##
+  # Includes functions related to formatting (like adding classes, colors)
+  ##
+  def event_status_icon(event)
+    case event.state
+    when 'new'
+      'fa-eye'
+    when 'unconfirmed'
+      'fa-check text-muted'
+    when 'confirmed'
+      'fa-check text-success'
+    when 'rejected', 'withdrawn', 'canceled'
+      'fa-ban'
+    end
+  end
+
+  def event_progress_color(progress)
+    progress = progress.to_i
+    if progress == 100
+      'progress-bar-success'
+    elsif progress >= 85
+      'progress-bar-info'
+    elsif progress >= 71
+      'progress-bar-warning'
+    else
+      'progress-bar-danger'
+    end
+  end
+
+  def target_progress_color(progress)
+    progress = progress.to_i
+    result =
+    case
+    when progress >= 90 then 'green'
+    when progress < 90 && progress >= 80 then 'orange'
+    else 'red'
+    end
+
+    result
+  end
+
+  def days_left_color(days_left)
+    days_left = days_left.to_i
+    if days_left > 30
+      result = 'green'
+    elsif days_left < 30 && days_left > 10
+      result = 'orange'
+    else
+      result = 'red'
+    end
+    result
+  end
+
+  def bootstrap_class_for(flash_type)
+    case flash_type
+    when 'success'
+      'alert-success'
+    when 'error'
+      'alert-danger'
+    when 'alert'
+      'alert-warning'
+    when 'notice'
+      'alert-info'
+    else
+      'alert-warning'
+    end
+  end
+
+  def label_for(event_state)
+    result = ''
+    case event_state
+    when 'new'
+      result = 'label label-primary'
+    when 'withdrawn'
+      result = 'label label-danger'
+    when 'unconfirmed'
+      result = 'label label-success'
+    when 'confirmed'
+      result = 'label label-success'
+    when 'rejected'
+      result = 'label label-warning'
+    when 'canceled'
+      result = 'label label-danger'
+    end
+    result
+  end
+
+  def icon_for_todo(bool)
+    if bool
+      return 'fa fa-check'
+    else
+      return 'fa fa-times'
+    end
+  end
+
+  def class_for_todo(bool)
+    if bool
+      return 'todolist-ok'
+    else
+      return 'todolist-missing'
+    end
+  end
+
+  # rubocop:disable Lint/EndAlignment
+  def word_pluralize(count, singular, plural = nil)
+    word = if (count == 1 || count =~ /^1(\.0+)?$/)
+      singular
+    else
+      plural || singular.pluralize
+    end
+
+    "#{word}"
+  end
+
+  # Returns black or white deppending on what of them contrast more with the
+  # given color. Useful to print text in a coloured background.
+  # hexcolor is a hex color of 7 characters, being the first one '#'.
+  # Reference: https://24ways.org/2010/calculating-color-contrast
+  def contrast_color(hexcolor)
+    r = hexcolor[1..2].to_i(16)
+    g = hexcolor[3..4].to_i(16)
+    b = hexcolor[5..6].to_i(16)
+    yiq = ((r * 299) + (g * 587) + (b * 114)) / 1000
+    (yiq >= 128) ? 'black' : 'white'
+  end
+
+  def td_height(rooms)
+    td_height = 500 / rooms.length
+    # we want all least 3 lines in events and td padding = 3px, speaker picture height >= 25px
+    # and line-height = 17px => (17 * 3) + 6 + 25 = 82
+    td_height < 82 ? 82 : td_height
+  end
+
+  def room_height(rooms)
+    room_lines(rooms) * 17
+  end
+
+  def room_lines(rooms)
+    # line-height = 17px, td padding = 3px
+    (td_height(rooms) - 6) / 17
+  end
+
+  def event_height(rooms)
+    event_lines(rooms) * 17
+  end
+
+  def event_lines(rooms)
+    # line-height = 17px, td padding = 3px, speaker picture height >= 25px
+    (td_height(rooms) - 31) / 17
+  end
+
+  def speaker_height(rooms)
+    # td padding = 3px
+    speaker_height = td_height(rooms) - 6 - event_height(rooms)
+    # The speaker picture is a circle and the width must be <= 37 to avoid making the cell widther
+    speaker_height >= 37 ? 37 : speaker_height
+  end
+
+  def speaker_width(rooms)
+    # speaker picture padding: 4px 2px; and we want the picture to be a circle
+    speaker_height(rooms) - 4
+  end
+
+  def carousel_item_class(number, carousel_number, num_cols, col)
+    item_class = 'item'
+    item_class += ' first' if number == 0
+    item_class += ' last' if number == (carousel_number - 1)
+    if (col && ((col / num_cols) == number)) || (!col && number == 0)
+      item_class += ' active'
+    end
+    item_class
+  end
+
+  def selected_scheduled?(schedule)
+    (schedule == @selected_schedule) ? 'Yes' : 'No'
+  end
+
+  def markdown(text)
+    return '' if text.nil?
+
+    options = {
+      autolink: true,
+      space_after_headers: true,
+      no_intra_emphasis: true
+    }
+    markdown = Redcarpet::Markdown.new(Redcarpet::Render::HTML.new(escape_html: true), options)
+    markdown.render(text).html_safe
+  end
+
+  def markdown_hint(text='')
+    markdown("#{text} Please look at #{link_to '**Markdown Syntax**', 'https://daringfireball.net/projects/markdown/syntax', target: '_blank'} to format your text")
+  end
+
+  def normalize_array_length(hashmap, length)
+    hashmap.each do |_, value|
+      if value.length < length
+        value.fill(value[-1], value.length...length)
+      end
+    end
+  end
+end