module RailsPerformanceHelper
  def round_it(value)
    return nil unless value
    return value if value.is_a?(Integer)

    value.nan? ? nil : value.round(1)
  end

  def duraction_alert_class(duration_str)
    if duration_str.to_s =~ /(\d+.?\d+?)/
      duration = $1.to_f
      if duration >= 500
        'has-background-danger has-text-white-bis'
      elsif duration >= 200
        'has-background-warning has-text-black-ter'
      else
        'has-background-success has-text-white-bis'
      end
    else
      'has-background-light'
    end
  end

  def extract_duration(str)
    if (str =~ /Duration: (\d+.?\d+?ms)/i)
      $1
    else
      '-'
    end
  end

  def ms(value)
    result = round_it(value)
    result && result != 0 ? "#{result} ms" : '-'
  end

  def short_path(path, length: 60)
    content_tag :span, title: path do
      truncate(path, length: length)
    end
  end

  def link_to_path(e)
    if e[:method] == 'GET'
      link_to(short_path(e[:path]), e[:path], target: '_blank')
    else
      short_path(e[:path])
    end
  end

  def report_name(h)
    h.except(:on).collect do |k, v|
      next if v.blank?

      %Q{
      <div class="control">
        <span class="tags has-addons">
          <span class="tag">#{k}</span>
          <span class="tag is-info is-light">#{v}</span>
        </span>
      </div>}
    end.compact.join.html_safe
  end

  def status_tag(status)
    klass = case status.to_s
    when /^5/
      "tag is-danger"
    when /^4/
      "tag is-warning"
    when /^3/
      "tag is-info"
    when /^2/
      "tag is-success"
    else
      nil
    end
    content_tag(:span, class: klass) do
      status
    end
  end

  def icon(name)
    # https://www.iconfinder.com/iconsets/vivid
    raw File.read(File.expand_path(File.dirname(__FILE__) +  "/../assets/images/#{name}.svg"))
  end

  def insert_css_file(file)
    raw "<style>#{raw File.read File.expand_path(File.dirname(__FILE__) + "/../views/rails_performance/stylesheets/#{file}")}</style>"
  end

  def insert_js_file(file)
    raw "<script>#{raw File.read File.expand_path(File.dirname(__FILE__) + "/../views/rails_performance/javascripts/#{file}")}</script>"
  end

  def format_datetime(e)
    e.strftime("%Y-%m-%d %H:%M:%S")
  end

  def active?(section)
    case section
    when :dashboard
      "is-active" if controller_name == "rails_performance" && action_name == "index"
    when :crashes
      "is-active" if controller_name == "rails_performance" && action_name == "crashes"
    when :requests
      "is-active" if controller_name == "rails_performance" && action_name == "requests"
    when :recent
      "is-active" if controller_name == "rails_performance" && action_name == "recent"
    end
  end
end