# 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 UserScore < ActiveRecord::Base
  belongs_to :user

  before_save :correct_score

  def self.find_max_file
    self.maximum(:file)
  end
  
  def self.find_min_file
    self.minimum(:file)
  end
  
  def self.find_max_issue
    self.maximum(:issue)
  end
  
  def self.find_min_issue
    self.minimum(:file)
  end
  # 以上类方法目测没用，反正也报错
  # ===============================================================================

  # 前略·协同得分
  # operate      - 更新操作 类型 symbol
  # user         - 计分用户
  #
  # Examples
  #   
  #   UserScore.joint(:post_message, User.current, nil)
  #   # => true #当前用户发帖计分操作成功
  #
  # Returns boolean. 返回积分保存结果
  def self.joint(operate, current_user, target_user, options={})
    current_user, target_user = get_users(current_user, target_user)
    user_score = current_user.user_score_attr
    case operate 
      when :post_message            # current_user 发帖了  Add Message
        user_score.collaboration = user_score.collaboration.to_i + 2
        user_score.save
        Rails.logger.info "[UserScore#joint] ===> User: #{current_user} posting a message. options => (#{options.to_s})"
      when :delete_message          # current_user 发帖了  Delete Message
        user_score.collaboration = user_score.collaboration.to_i - 2
        user_score.save
        Rails.logger.info "[UserScore#joint] ===> User: #{current_user} deleting a message. options => (#{options.to_s})"
      when :post_issue              # current_user 对 target_user 的缺陷留言了 Add Journal
        user_score.collaboration = user_score.collaboration.to_i + 1
        user_score.save
      Rails.logger.info "[UserScore#joint] ===> User: #{current_user} posting a issue. options => (#{options.to_s})"
      when :delete_issue           # current_user 删除了 对 target_user 的缺陷留言了 Delete Journal
        user_score.collaboration = user_score.collaboration.to_i - 1
        user_score.save
        Rails.logger.info "[UserScore#joint] ===> User: #{current_user} deleting a issue. options => (#{options.to_s})"
      when :change_issue_status     # current_user 更改了缺陷的状态 Changed Issue
        user_score.collaboration = user_score.collaboration.to_i + 1
        user_score.save
      Rails.logger.info "[UserScore#joint] ===> User: #{current_user} change issue status. options => (#{options.to_s})"
      when :reply_message           # current_user 对 target_user 留言的回复 Add Journals_for_messages
        user_score.collaboration = user_score.collaboration.to_i + 1
        user_score.save
      Rails.logger.info "[UserScore#joint] ===> User: #{current_user} reply message. options => (#{options.to_s})"
      when :reply_message_delete    # current_user 删除了对 target_user 留言的回复 delete Journals_for_messages
        user_score.collaboration = user_score.collaboration.to_i - 1
        user_score.save
        Rails.logger.info "[UserScore#joint] ===> User: #{current_user} delete reply message. options => (#{options.to_s})"
      when :reply_posting           # current_user 对 target_user 帖子的回复  Add Message
        user_score.collaboration = user_score.collaboration.to_i + 1
        user_score.save
      Rails.logger.info "[UserScore#joint] ===> User: #{current_user} reply posting. options => (#{options.to_s})"
      when :reply_deleting          # current_user 删除了 对 target_user 帖子的回复  Delete Message
        user_score.collaboration = user_score.collaboration.to_i - 1
        user_score.save
        Rails.logger.info "[UserScore#joint] ===> User: #{current_user} reply deleting. options => (#{options.to_s})"
    else
      Rails.logger.error "[UserScore#joint] ===> #{operate} is not define."
      return false
    end
  rescue => e
    Rails.logger.error "[UserScore#joint] ===> Exception: #{e}."
  end

  # 前略·影响力得分
  # operate      - 更新操作 类型 symbol
  # user         - 计分用户
  #
  # Examples
  #   
  #   UserScore.influence(:followed_by, user)
  #   # => true #当前被关注用户记分成功
  #
  # Returns boolean. 返回积分保存结果
  def self.influence(operate, current_user, target_user, options={})
    current_user, target_user = get_users(current_user, target_user)
    user_score = target_user.user_score_attr
    case operate 
      when :followed_by # current_user 关注了target_user   Add watcher
        user_score.influence = user_score.influence.to_i + 2
        user_score.save
      Rails.logger.info "[UserScore#influence] ===> User: #{current_user} be followed. options => (#{options.to_s})"
      when :cancel_followed # current_uer 取消了对 target_user的关注   delete watcher
        user_score.influence = user_score.influence.to_i - 2
        user_score.save
        Rails.logger.info "[UserScore#influence] ===> User: #{current_user} canceled followed. options => (#{options.to_s})"
    else
      Rails.logger.error "[UserScore#influence] ===> #{operate} is not define."
      return false
    end
  rescue => e
    Rails.logger.error "[UserScore#influence] ===> Exception: #{e}."
  end

  # 前略·技术得分
  # operate      - 更新操作 类型 symbol
  # user         - 计分用户
  #
  # Examples
  #   
  #   UserScore.skill(:followed_by, current_user, target_user)
  #   # => true #当前current_user对target_user用户帖子的记分成功
  #
  # Returns boolean. 返回积分保存结果
  def self.skill(operate, current_user, target_user, options={})
    current_user, target_user = get_users(current_user, target_user)
    current_user_score = current_user.user_score_attr
    target_user_score = target_user.user_score_attr
    case operate 
    # when :treading          # current_user 踩了 target_user 的帖子
    #   Rails.logger.info "[UserScore#skill] ===> User: #{current_user} treading #{target_user}'s posting. options => (#{options.to_s})"
      when :treaded_by_user   # current_user 踩了 target_user 的帖子
        current_user_score.skill = current_user_score.skill.to_i - 2  #踩别人的帖子减2分 add praise_tread
        current_user_score.save
        if current_user.id == target_user.id
          target_user.reload
          target_user_score = target_user.user_score_attr
        end
        level = current_user.get_level
        if level == 1
          target_user_score.skill = target_user_score.skill.to_i - 2 #帖子被一级会员踩-2分  add praise_tread
          target_user_score.save
        elsif  level == 2
          target_user_score.skill = target_user_score.skill.to_i - 4 #帖子被二级会员踩-4分  add praise_tread
          target_user_score.save
        elsif level == 3
          target_user_score.skill = target_user_score.skill.to_i - 6 #帖子被三级会员踩-6分  add praise_tread
          target_user_score.save
        end

      Rails.logger.info "[UserScore#skill] ===> User: #{current_user} treaded_by #{target_user}. options => (#{options.to_s})"
      when :praised_by_user    # current_user 顶了 target_user 的帖子
        level = current_user.get_level
        if level == 1
          target_user_score.skill = target_user_score.skill.to_i + 4 #帖子被一级会员顶+4分  add praise_tread
          target_user_score.save
        elsif level == 2
          target_user_score.skill = target_user_score.skill.to_i + 6 #帖子被二级会员顶+6分  add praise_tread
          target_user_score.save
        elsif  level == 3
          target_user_score.skill = target_user_score.skill.to_i + 8 #帖子被三级会员顶+8分  add praise_tread
          target_user_score.save
        end

      Rails.logger.info "[UserScore#skill] ===> User: #{current_user} praised_by #{target_user}. options => (#{options.to_s})"
    else
      Rails.logger.error "[UserScore#skill] ===> #{operate} is not define."
      return false
    end
  rescue => e
    Rails.logger.error "[UserScore#skill] ===> Exception: #{e}."
  end

  # 前略·项目得分
  # operate      - 更新操作 类型 symbol
  # user         - 计分用户
  #
  # Examples
  #   
  #   UserScore.project(:pull_code, current_user)
  #   # => true #当前current_user对项目贡献积分成功
  #
  # Returns boolean. 返回积分保存结果
  def self.project(operate, current_user, options={})
    current_user, target_user = get_users(current_user, nil)
    user_score = current_user.try(:user_score_attr)
    return false if current_user.nil?
    case operate 
    when :push_code         # current_user 提交了代码 changeset
      user_score = user_score.active.to_i + 4
      user_score.save
      Rails.logger.debug "[UserScore#project] ===> User: [#{current_user.id},#{current_user.name}] pushed code one time. options => (#{options.to_s})"
    when :push_document     # current_user 
      user_score.active = user_score.active.to_i + 4
      user_score.save
      Rails.logger.debug "[UserScore#project] ===> User: [#{current_user.id},#{current_user.name}] pushed a document. options => (#{options.to_s})"
    when :push_file         # current_user
      user_score.active = user_score.active.to_i + 4
      user_score.save
      Rails.logger.debug "[UserScore#project] ===> User: [#{current_user.id},#{current_user.name}] pushed a file. options => (#{options.to_s})"
    when :update_issue_ratio      # current_user
      user_score.active = user_score.active.to_i + 2
      user_score.save
      Rails.logger.debug "[UserScore#project] ===> User: [#{current_user.id},#{current_user.name}] updated issue ratio. options => (#{options.to_s})"
    when :post_issue        # current_user
      user_score.active = user_score.active.to_i + 4
      user_score.save
      Rails.logger.debug "[UserScore#project] ===> User: [#{current_user.id},#{current_user.name}] posting issue. options => (#{options.to_s})"
    else
      Rails.logger.error "[UserScore#project] ===> #{operate} is not define."
      return false
    end
  rescue => e
    Rails.logger.error "[UserScore#project] ===> Exception: #{e}."
  end

  private

  def self.get_users(current_user, target_user)
    cUser =  (current_user.kind_of?User) ? current_user : User.find_by_id(current_user)
    tUser =  (target_user.kind_of?User) ? target_user : User.find_by_id(target_user)
    
    [cUser, tUser]
  end

  #修正分数
  #分数小于0时修正为0
  #分数大于等于0时不修正  -by zjc
  def correct_score
     if !self.collaboration.nil? && self.collaboration < 0
       self.collaboration = 0
     end
     if !self.influence.nil? && self.influence < 0
       self.influence = 0
     end
     if !self.skill.nil? && self.skill < 0
       self.skill = 0
     end
     if !self.active.nil? && self.active < 0
       self.active = 0
     end
  end
end