# Redmine - project management software
# Copyright (C) 2006-2017  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 MyPage
    include Redmine::I18n

    CORE_GROUPS = ['top', 'left', 'right']

    CORE_BLOCKS = {
        'issuesassignedtome' => {:label => :label_assigned_to_me_issues},
        'issuesreportedbyme' => {:label => :label_reported_issues},
        'issueswatched' => {:label => :label_watched_issues},
        'issuequery' => {:label => :label_issue_plural, :max_occurs => 3},
        'news' => {:label => :label_news_latest},
        'calendar' => {:label => :label_calendar},
        'documents' => {:label => :label_document_plural},
        'timelog' => {:label => :label_spent_time},
        'activity' => {:label => :label_activity}
      }

    def self.groups
      CORE_GROUPS.dup.freeze
    end

    # Returns the available blocks
    def self.blocks
      CORE_BLOCKS.merge(additional_blocks).freeze
    end

    def self.block_options(blocks_in_use=[])
      options = []
      blocks.each do |block, block_options|
        indexes = blocks_in_use.map {|n|
          if n =~ /\A#{block}(__(\d+))?\z/
            $2.to_i
          end
        }.compact

        occurs = indexes.size
        block_id = indexes.any? ? "#{block}__#{indexes.max + 1}" : block
        disabled = (occurs >= (Redmine::MyPage.blocks[block][:max_occurs] || 1))
        block_id = nil if disabled

        label = block_options[:label]
        options << [l("my.blocks.#{label}", :default => [label, label.to_s.humanize]), block_id]
      end
      options
    end

    def self.valid_block?(block, blocks_in_use=[])
      block.present? && block_options(blocks_in_use).map(&:last).include?(block)
    end

    def self.find_block(block)
      block.to_s =~  /\A(.*?)(__\d+)?\z/
      name = $1
      blocks.has_key?(name) ? blocks[name].merge(:name => name) : nil
    end

    # Returns the additional blocks that are defined by plugin partials
    def self.additional_blocks
      @@additional_blocks ||= Dir.glob("#{Redmine::Plugin.directory}/*/app/views/my/blocks/_*.{rhtml,erb}").inject({}) do |h,file|
        name = File.basename(file).split('.').first.gsub(/^_/, '')
        h[name] = {:label => name.to_sym, :partial => "my/blocks/#{name}"}
        h
      end
    end

    # Returns the default layout for My Page
    def self.default_layout
      {
        'left' => ['issuesassignedtome'],
        'right' => ['issuesreportedbyme']
      }
    end
  end
end
