SoundSoftware Code Site

class PopulateIssuesClosedOn < ActiveRecord::Migration

  def up

    closed_status_ids = IssueStatus.where(:is_closed => true).pluck(:id)

    if closed_status_ids.any?

      # First set closed_on for issues that have been closed once

      closed_status_values = closed_status_ids.map {|status_id| "'#{status_id}'"}.join(',')

      subselect = "SELECT MAX(#{Journal.table_name}.created_on)" +

        " FROM #{Journal.table_name}, #{JournalDetail.table_name}" +

        " WHERE #{Journal.table_name}.id = #{JournalDetail.table_name}.journal_id" +

        " AND #{Journal.table_name}.journalized_type = 'Issue' AND #{Journal.table_name}.journalized_id = #{Issue.table_name}.id" +

        " AND #{JournalDetail.table_name}.property = 'attr' AND #{JournalDetail.table_name}.prop_key = 'status_id'" +

        " AND #{JournalDetail.table_name}.old_value NOT IN (#{closed_status_values})" +

        " AND #{JournalDetail.table_name}.value IN (#{closed_status_values})"

      Issue.update_all "closed_on = (#{subselect})"

      # Then set closed_on for closed issues that weren't up updated by the above UPDATE

      # No journal was found so we assume that they were closed on creation

      Issue.update_all "closed_on = created_on", {:status_id => closed_status_ids, :closed_on => nil}

    end

  end

  def down

    Issue.update_all :closed_on => nil

  end

end