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# encoding: utf-8

#

# Redmine - project management software

# Copyright (C) 2006-2011  Jean-Philippe Lang

#

# This program is free software; you can redistribute it and/or

# modify it under the terms of the GNU General Public License

# as published by the Free Software Foundation; either version 2

# of the License, or (at your option) any later version.

#

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

module SearchHelper

  def highlight_tokens(text, tokens)

    return text unless text && tokens && !tokens.empty?

    re_tokens = tokens.collect {|t| Regexp.escape(t)}

    regexp = Regexp.new "(#{re_tokens.join('|')})", Regexp::IGNORECASE

    result = ''

    text.split(regexp).each_with_index do |words, i|

      if result.length > 1200

        # maximum length of the preview reached

        result << '...'

        break

      end

      words = words.mb_chars

      if i.even?

        result << h(words.length > 100 ? "#{words.slice(0..44)} ... #{words.slice(-45..-1)}" : words)

      else

        t = (tokens.index(words.downcase) || 0) % 4

        result << content_tag('span', h(words), :class => "highlight token-#{t}")

      end

    end

    result

  end

  def type_label(t)

    l("label_#{t.singularize}_plural", :default => t.to_s.humanize)

  end

  def project_select_tag

    options = [[l(:label_project_all), 'all']]

    options << [l(:label_my_projects), 'my_projects'] unless User.current.memberships.empty?

    options << [l(:label_and_its_subprojects, @project.name), 'subprojects'] unless @project.nil? || @project.descendants.active.empty?

    options << [@project.name, ''] unless @project.nil?

    label_tag("scope", l(:description_project_scope), :class => "hidden-for-sighted") +

    select_tag('scope', options_for_select(options, params[:scope].to_s)) if options.size > 1

  end

  def render_results_by_type(results_by_type)

    links = []

    # Sorts types by results count

    results_by_type.keys.sort {|a, b| results_by_type[b] <=> results_by_type[a]}.each do |t|

      c = results_by_type[t]

      next if c == 0

      text = "#{type_label(t)} (#{c})"

      links << link_to(h(text), :q => params[:q], :titles_only => params[:titles_only],

                       :all_words => params[:all_words], :scope => params[:scope], t => 1)

    end

    ('<ul>' + links.map {|link| content_tag('li', link)}.join(' ') + '</ul>') unless links.empty?

  end

end