Undev/redmine_tagging

module TaggingHelper
  def link_to_project_tag_filter(project, tag, options = {}, html_options = {})
    options.reverse_merge!({
      status: 'o',
      title:  tag
    })

    opts = {
      'set_filter'     => 1,
      'f'              => ['tags', 'status_id'],
      'op[tags]'       => '=',
      'op[status_id]'  => options[:status],
      'v[tags][]'      => tag_without_sharp(tag),
      'v[status_id][]' => 1
    }

    if project
      link_to(options[:title], project_issues_path(project, opts), html_options)
    else
      link_to(options[:title], issues_path(opts), html_options)
    end
  end

  def tag_without_sharp(tag)
    tag.to_s.gsub /^\s*#/, ''
  end

  def tag_cloud_in_project(project, &each_tag)
    tags = {}

    if project
      context = TaggingPlugin::ContextHelper.context_for(project)

      Issue.tag_counts_on(context).each do |tag|
        tags[tag.name] = tag.count
      end

      WikiPage.tag_counts_on(context).each do |tag|
        tags[tag.name] = tags[tag.name].to_i + tag.count
      end
    else
      Issue.all_tag_counts.each do |tag|
        tags[tag.name] = tag.count
      end

      WikiPage.all_tag_counts.each do |tag|
        tags[tag.name] = tags[tag.name].to_i + tag.count
      end
    end

    tags = tags.reject {|key,value| value == 0 }

    if tags.size > 0
      min_max = tags.values.minmax
      distance = min_max[1] - min_max[0]

      dynamic_fonts_enabled = (Setting.plugin_redmine_tagging[:dynamic_font_size] == "1")

      tags.keys.sort_by { |t| t.downcase }.each do |tag|
        if dynamic_fonts_enabled && (distance != 0)
          count = tags[tag]
          factor = (count - min_max[0]).to_f / distance
        else
          factor = 0.0
        end

        each_tag.call(tag, factor)
      end
    end
  end
end