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# Redmine - project management software

# Copyright (C) 2006-2009  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 Redmine

  module Search

    mattr_accessor :available_search_types

    @@available_search_types = []

    class << self

      def map(&block)

        yield self

      end

      # Registers a search provider

      def register(search_type, options={})

        search_type = search_type.to_s

        @@available_search_types << search_type unless @@available_search_types.include?(search_type)

      end

    end

    module Controller

      def self.included(base)

        base.extend(ClassMethods)

      end

      module ClassMethods

        @@default_search_scopes = Hash.new {|hash, key| hash[key] = {:default => nil, :actions => {}}}

        mattr_accessor :default_search_scopes

        # Set the default search scope for a controller or specific actions

        # Examples:

        #   * search_scope :issues # => sets the search scope to :issues for the whole controller

        #   * search_scope :issues, :only => :index

        #   * search_scope :issues, :only => [:index, :show]

        def default_search_scope(id, options = {})

          if actions = options[:only]

            actions = [] << actions unless actions.is_a?(Array)

            actions.each {|a| default_search_scopes[controller_name.to_sym][:actions][a.to_sym] = id.to_s}

          else

            default_search_scopes[controller_name.to_sym][:default] = id.to_s

          end

        end

      end

      def default_search_scopes

        self.class.default_search_scopes

      end

      # Returns the default search scope according to the current action

      def default_search_scope

        @default_search_scope ||= default_search_scopes[controller_name.to_sym][:actions][action_name.to_sym] ||

                                  default_search_scopes[controller_name.to_sym][:default]

      end

    end

  end

end