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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 WorkflowPermission < WorkflowRule

  validates_inclusion_of :rule, :in => %w(readonly required)

  validate :validate_field_name

  # Replaces the workflow permissions for the given tracker and role

  #

  # Example:

  #   WorkflowPermission.replace_permissions role, tracker, {'due_date' => {'1' => 'readonly', '2' => 'required'}}

  def self.replace_permissions(tracker, role, permissions)

    destroy_all(:tracker_id => tracker.id, :role_id => role.id)

    permissions.each { |field, rule_by_status_id|

      rule_by_status_id.each { |status_id, rule|

        if rule.present?

          WorkflowPermission.create(:role_id => role.id, :tracker_id => tracker.id, :old_status_id => status_id, :field_name => field, :rule => rule)

        end

      }

    }

  end

  protected

  def validate_field_name

    unless Tracker::CORE_FIELDS_ALL.include?(field_name) || field_name.to_s.match(/^\d+$/)

      errors.add :field_name, :invalid

    end

  end

end