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# Redmine - project management software

# Copyright (C) 2006-2012  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.

class WorkflowTransition < WorkflowRule

  validates_presence_of :new_status

  # Returns workflow transitions count by tracker and role

  def self.count_by_tracker_and_role

    counts = connection.select_all("SELECT role_id, tracker_id, count(id) AS c FROM #{table_name} WHERE type = 'WorkflowTransition' GROUP BY role_id, tracker_id")

    roles = Role.sorted.all

    trackers = Tracker.sorted.all

    result = []

    trackers.each do |tracker|

      t = []

      roles.each do |role|

        row = counts.detect {|c| c['role_id'].to_s == role.id.to_s && c['tracker_id'].to_s == tracker.id.to_s}

        t << [role, (row.nil? ? 0 : row['c'].to_i)]

      end

      result << [tracker, t]

    end

    result

  end

end