# Redmine - project management software
# Copyright (C) 2006-2013  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 Journal < ActiveRecord::Base
  include UserScoreHelper
  belongs_to :journalized, :polymorphic => true,:touch => true
  # added as a quick fix to allow eager loading of the polymorphic association
  # since always associated to an issue, for now
  belongs_to :issue, :foreign_key => :journalized_id,:touch => true

  belongs_to :user
  has_many :details, :class_name => "JournalDetail", :dependent => :delete_all
  # added by fq
  has_one :journal_reply
  has_many :acts, :class_name => 'Activity', :as => :act, :dependent => :destroy
  # 被ForgeActivity虚拟关联
  #has_many :forge_acts, :class_name => 'ForgeActivity',:as =>:forge_act ,:dependent => :destroy 评论不应该算入
  # 被ForgeMessage虚拟关联
  has_many :forge_messages, :class_name => 'ForgeMessage',:as =>:forge_message ,:dependent => :destroy
  has_many :at_messages, as: :at_message, dependent: :destroy
  acts_as_attachable
  attr_accessor :indice

  acts_as_event :title =>Proc.new {|o| status = ((s = o.new_status) ? " (#{s})" : nil); "#{o.issue.tracker} ##{o.issue.project_index}#{status}: #{o.issue.subject}" },
                :description =>:notes,
                :author => :user,
                :group => :issue,
                :type => Proc.new {|o| (s = o.new_status) ? (s.is_closed? ? 'issue-closed' : 'issue-edit') : 'issue-note' },
                :url => Proc.new {|o| {:controller => 'issues', :action => 'show', :id => o.issue.id, :anchor => "change-#{o.id}"}}

  acts_as_activity_provider :type => 'issues',
                            :author_key => :user_id,
                            :find_options => {:include => [{:issue => :project}, :details, :user],
                            :conditions => "#{Journal.table_name}.journalized_type = 'Issue' AND" +
                                             "(#{JournalDetail.table_name}.prop_key = 'status_id' OR #{Journal.table_name}.notes <> '')"}

  before_create :split_private_notes, :add_journals_count
  
  # fq
  after_save :act_as_activity,:be_user_score, :act_as_forge_message, :act_as_at_message
  after_create :update_issue_time
  # end
  #after_destroy :down_user_score
  #before_save :be_user_score
  after_destroy :down_user_score, :decrease_issues_journal_count

  scope :visible, lambda {|*args|
    user = args.shift || User.current

    includes(:issue => :project).
      where(Issue.visible_condition(user, *args)).
      where("(#{Journal.table_name}.private_notes = ? OR (#{Project.allowed_to_condition(user, :view_private_notes, *args)}))", false)
  }

  def save(*args)
    # Do not save an empty journal
    (details.empty? && notes.blank?) ? false : super
  end

  # Returns the new status if the journal contains a status change, otherwise nil
  def new_status
    c = details.detect {|detail| detail.prop_key == 'status_id'}
    (c && c.value) ? IssueStatus.find_by_id(c.value.to_i) : nil
  end

  def new_value_for(prop)
    c = details.detect {|detail| detail.prop_key == prop}
    c ? c.value : nil
  end

  def editable_by?(usr)
    usr && usr.logged? && (usr.allowed_to?(:edit_issue_notes, project) || (self.user == usr && usr.allowed_to?(:edit_own_issue_notes, project)))
  end

  def project
    journalized.respond_to?(:project) ? journalized.project : nil
  end

  def attachments
    journalized.respond_to?(:attachments) ? journalized.attachments : nil
  end

  # Returns a string of css classes
  def css_classes
    s = 'journal'
    s << ' has-notes' unless notes.blank?
    s << ' has-details' unless details.blank?
    s << ' private-notes' if private_notes?
    s
  end

  def notify?
    @notify != false
  end

  def notify=(arg)
    @notify = arg
  end

  def recipients
    notified = journalized.notified_users
    if private_notes?
      notified = notified.select {|user| user.allowed_to?(:view_private_notes, journalized.project)}
    end
    notified.map(&:mail)
  end

  def watcher_recipients
    notified = journalized.notified_watchers
    if private_notes?
      notified = notified.select {|user| user.allowed_to?(:view_private_notes, journalized.project)}
    end
    notified.map(&:mail)
  end
  
  ## added_by_fq
  def self.reference_message(user_id)
    message = Journal.find_by_sql("select id, journalized_id, user_id, notes, created_on from journals where id in (select journal_id from journal_replies where reply_id = #{user_id})")
    message += Journal.find_by_sql("select id, journalized_id, user_id, notes, created_on from journals where journalized_id in (select id from issues where assigned_to_id = #{user_id})")
    message
  end
  ##

  private

  def split_private_notes
    if private_notes?
      if notes.present?
        if details.any?
          # Split the journal (notes/changes) so we don't have half-private journals
          journal = Journal.new(:journalized => journalized, :user => user, :notes => nil, :private_notes => false)
          journal.details = details
          journal.save
          self.details = []
          self.created_on = journal.created_on
        end
      else
        # Blank notes should not be private
        self.private_notes = false
      end
    end
    true
  end
  
  # fq
  def act_as_activity
    self.acts << Activity.new(:user_id => self.user_id)
  end
  # end

  # # Time 2015-02-27 13:30:19
  # # Author lizanle
  # # Description 公共表中需要保存一份该记录
  # def act_as_forge_activity
  #   self.forge_acts << ForgeActivity.new(:user_id => self.user_id,
  #                                           :project_id => self.issue.project.id)
  #
  # end

  # 缺陷状态更改，消息提醒
  def act_as_forge_message
    receivers = []
    # 直接回复
    if self.user_id != self.issue.author_id
      receivers << self.issue.author_id
    end
    if self.user_id != self.issue.assigned_to_id && self.issue.assigned_to_id != self.issue.author_id   # 指派人不是自己的话，则给指派人发送
      receivers << self.issue.assigned_to_id
    end
    receivers.each do |r|
      self.forge_messages << ForgeMessage.new(:user_id => r, :project_id => self.issue.project_id, :viewed => false)
    end
  end

  def act_as_at_message
    users = self.notes.scan /<span class="at" data-user-id="(\d+?)">/m
    users && users.flatten.uniq.each do |uid|
      self.at_messages << AtMessage.new(user_id: uid, sender_id: self.user_id)
    end
  end

  # 更新用户分数     -by zjc
  def be_user_score
      #新建了缺陷留言且留言不为空，不为空白
    if !self.notes.nil? && self.notes.gsub(' ','') != ''
      #协同得分加分
      UserScore.joint(:post_issue_message, self.user,self.issue.author,self, { message_id: self.id })
      update_messges_for_issue(self.user,1)
      update_messges_for_issue(self.user,2,self.issue.project)
    end

  end
  # 减少用户分数     -by zjc
  def down_user_score
    #删除有效缺陷留言
    if !self.notes.nil? && self.notes.gsub(' ','') != ''
      #协同得分减分
      UserScore.joint(:delete_issue_message, self.user,self.issue.author,self, { message_id: self.id })
      update_messges_for_issue(self.user,1)
      update_messges_for_issue(self.user,2,self.issue.project)
    end

  end

  # 减少留言数量统计
  def decrease_issues_journal_count
    unless self.issue.project.nil?
      journal_count = self.issue.project.project_score.issue_journal_num - 1
      # project = self.issue.project
       self.issue.project.project_score.update_attribute(:issue_journal_num, journal_count < 0 ? 0 : journal_count)
    end
  end

  # issue留言总数更新
  def add_journals_count
    if !self.issue.project.nil? && self.journalized_type == "Issue" && !self.issue.project.project_score.nil?
      project = self.issue.project
      project.project_score.update_attribute(:issue_journal_num, project.project_score.issue_journal_num + 1)
    end
  end

  # 回复issue的时候，更新issue的时候
  def update_issue_time
    if self.journalized_type == "Issue"
      forge_activity = ForgeActivity.where("forge_act_id =? and forge_act_type =?", self.issue, "Issue").first
      forge_activity.update_attribute(:created_at, self.created_on) unless forge_activity.nil?
    end
  end
end