SoundSoftware Code Site

# 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 IssueStatus < ActiveRecord::Base

  before_destroy :check_integrity

  has_many :workflows, :class_name => 'WorkflowTransition', :foreign_key => "old_status_id"

  acts_as_list

  before_destroy :delete_workflow_rules

  after_save     :update_default

  validates_presence_of :name

  validates_uniqueness_of :name

  validates_length_of :name, :maximum => 30

  validates_inclusion_of :default_done_ratio, :in => 0..100, :allow_nil => true

  scope :sorted, order("#{table_name}.position ASC")

  scope :named, lambda {|arg| where("LOWER(#{table_name}.name) = LOWER(?)", arg.to_s.strip)}

  def update_default

    IssueStatus.update_all({:is_default => false}, ['id <> ?', id]) if self.is_default?

  end

  # Returns the default status for new issues

  def self.default

    where(:is_default => true).first

  end

  # Update all the +Issues+ setting their done_ratio to the value of their +IssueStatus+

  def self.update_issue_done_ratios

    if Issue.use_status_for_done_ratio?

      IssueStatus.where("default_done_ratio >= 0").all.each do |status|

        Issue.update_all({:done_ratio => status.default_done_ratio}, {:status_id => status.id})

      end

    end

    return Issue.use_status_for_done_ratio?

  end

  # Returns an array of all statuses the given role can switch to

  # Uses association cache when called more than one time

  def new_statuses_allowed_to(roles, tracker, author=false, assignee=false)

    if roles && tracker

      role_ids = roles.collect(&:id)

      transitions = workflows.select do |w|

        role_ids.include?(w.role_id) &&

        w.tracker_id == tracker.id &&

        ((!w.author && !w.assignee) || (author && w.author) || (assignee && w.assignee))

      end

      transitions.map(&:new_status).compact.sort

    else

      []

    end

  end

  # Same thing as above but uses a database query

  # More efficient than the previous method if called just once

  def find_new_statuses_allowed_to(roles, tracker, author=false, assignee=false)

    if roles.present? && tracker

      conditions = "(author = :false AND assignee = :false)"

      conditions << " OR author = :true" if author

      conditions << " OR assignee = :true" if assignee

      workflows.

        includes(:new_status).

        where(["role_id IN (:role_ids) AND tracker_id = :tracker_id AND (#{conditions})",

          {:role_ids => roles.collect(&:id), :tracker_id => tracker.id, :true => true, :false => false}

          ]).all.

        map(&:new_status).compact.sort

    else

      []

    end

  end

  def <=>(status)

    position <=> status.position

  end

  def to_s; name end

  private

  def check_integrity

    raise "Can't delete status" if Issue.where(:status_id => id).any?

  end

  # Deletes associated workflows

  def delete_workflow_rules

    WorkflowRule.delete_all(["old_status_id = :id OR new_status_id = :id", {:id => id}])

  end

end