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# This file is a part of redmine_tags

# redMine plugin, that adds tagging support.

#

# Copyright (c) 2010 Aleksey V Zapparov AKA ixti

#

# redmine_tags 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 3 of the License, or

# (at your option) any later version.

#

# redmine_tags 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 redmine_tags.  If not, see <http://www.gnu.org/licenses/>.

require_dependency 'issue'

module RedmineTags

  module Patches

    module IssuePatch

      def self.included(base)

        base.extend(ClassMethods)

        base.class_eval do

          unloadable

          acts_as_taggable

        end

      end

      module ClassMethods

        # Returns available issue tags

        # === Parameters

        # * <i>options</i> = (optional) Options hash of

        #   * project   - Project to search in.

        #   * open_only - Boolean. Whenever search within open issues only.

        #   * name_like - String. Substring to filter found tags.

        def available_tags(options = {})

          project   = options[:project]

          open_only = options[:open_only]

          name_like = options[:name_like]

          options   = {}

          visible   = ARCondition.new

          if project

            project = project.id if project.is_a? Project

            visible << ["#{Issue.table_name}.project_id = ?", project]

          end

          if open_only

            visible << ["#{Issue.table_name}.status_id IN " +

                        "( SELECT issue_status.id " + 

                        "    FROM #{IssueStatus.table_name} issue_status " +

                        "   WHERE issue_status.is_closed = ? )", false]

          end

          if name_like

            visible << ["#{ActsAsTaggableOn::Tag.table_name}.name LIKE ?", "%#{name_like.downcase}%"]

          end

          options[:conditions] = visible.conditions

          self.all_tag_counts(options)

        end

      end

    end

  end

end