# encoding: utf-8
# status 控制实训的状态，0：编辑；1: 申请发布; 2：正式发布； 3：关闭
# is_updated 字段为1表示实训的更改可能会影响到后续的评测，0表示更改不会影响后续的评测
# reset_time表示需要更新脚本的时间
# modify_time表示仅测试集更新的时间
# main_mirror_id 实训使用镜像的主类别
# child_mirror_id 实训使用镜像的子类别，子类别可以有多个，所以字段是字符串数组类型
# webssh  0：不开启webssh；1：开启练习模式;  2：开启评测模式
# trainee 实训的难度
# user_scorp
# exec_time 程序执行时间

# 繁忙等级参数：80发布实训失败，返回code为-1；81：实训开启的时候fork失败或者pull失败;83：开启实训的时候，openGameInstance返回非0值；84：jenkins系统异常，post数据不成功
# 85：challenge创建的时候Jenkins处理异常;86：实训评测失败，jenkins返回错误结果; 87：版本库删除异常；88：点击评测失败，没返回数据；89：重置链接jenkins返回失败
# 90: 更新公共测试用例失败，返回code非0；91：实训有改动，评测的时候初始化数据，返回数据code非0；92：webssh开启失败，接口getConnectInfo返回code值非0
# 93: 实训断开连接失败，接口deleteSSH返回code值非0
# 94: 获取评测等待时间失败，接口getWaitingTime返回code值为非0
# 95：代码重置失败
# 96：代码自动修复失败
# 97：tpi获取当前代码为空
# 98：更新tpi脚本异常
# 99：vnc连接异常
# 110：websshPod删除异常
# 116：challenge创建关卡的时候返回结果错误
#
class Shixun < ActiveRecord::Base
  attr_accessible :description, :name, :changeset_num, :status, :user_id, :gpid, :language, :identifier, :authentication, :closer_id, :end_time, :publish_time,
                  :propaedeutics, :trainee, :major_id, :homepage_show, :webssh, :hidden, :fork_from, :can_copy, :modify_time, :reset_time, :git_url, :use_scope,
                  :vnc, :evaluate_script, :image_text, :exec_time, :test_set_permission, :hide_code, :excute_time, :forbid_copy

  has_many :users, :through => :shixun_members
  has_many :shixun_members, :dependent => :destroy
  has_one :repository, :dependent => :destroy
  has_many :homework_commons_shixunses
  has_many :homework_challenge_settings, :dependent => :destroy
  has_many :challenges, :dependent => :destroy
  has_many :myshixuns, :dependent => :destroy
  has_many :stage_shixuns, :dependent => :destroy
  belongs_to :major
  belongs_to :major_course
  has_many :shixun_major_courses, :dependent => :destroy
  has_and_belongs_to_many :homework_commons
  has_many :discusses, :as => :dis, :dependent => :destroy
  has_many :shixun_ports
  has_many :evaluate_records, :dependent => :destroy
  has_many :shixun_mirror_repositories, :dependent => :destroy
  has_many :mirror_repositories, :through => :shixun_mirror_repositories
  has_many :shixun_schools, :dependent => :destroy
  has_many :schools, :through => :shixun_schools
  has_many :exercise_shixun_challenges, :dependent => :destroy
  has_many :exercise_bank_shixun_challenges, :dependent => :destroy
  has_many :tag_repertoires, :through => :shixun_tag_repertoires
  has_many :shixun_tag_repertoires, :dependent => :destroy


  scope :visible, lambda{where(status: [2,3])}
  scope :min, lambda { select([:id, :name, :gpid, :modify_time, :reset_time, :language, :propaedeutics, :status, :identifier, :test_set_permission, :hide_code, :forbid_copy,
                               :webssh, :user_id, :code_hidden, :task_pass, :exec_time, :multi_webssh]) }
  scope :published, lambda{where(status: 2)}
  scope :field_for_recommend, lambda{ select([:id, :name, :identifier, :myshixuns_count]) }

  include ApplicationHelper
  has_many :tidings, :as => :container, :dependent => :destroy
  scope :visible, -> { where(status: -1) }
  after_create :send_tiding

  def should_compile?
    self.mirror_repositories.published_main_mirror.first.try(:should_compile)
  end

  def is_published?
    self.status > 1 ? true : false
  end

  def fork_identifier
    self.fork_from.nil? ? "--" : Shixun.where(id: self.fork_from).first.try(:identifier)
  end

  def get_fork
    Shixun.where(:fork_from => self.id)
  end

  def switch_language
    case self.shixun_main_name
      when "C#"
        "Cxp"
      when "C/C++","C","C++"
        "Cjia"
      else
        self.shixun_main_name
    end
  end

  def send_tiding
    self.tidings << Tiding.new(:user_id => self.user_id, :trigger_user_id => self.user_id, :belong_container_id => self.id, :belong_container_type =>'Shixun', :tiding_type => "System", :viewed => 0)
  end

  def is_choice_type
    self.challenges.count == self.challenges.where(:st => 1).count ? true : false
  end

  def is_practice_type
    self.challenges.count == self.challenges.where(:st => 0).count ? true : false
  end

# 实训关卡的总分(由于大部分是实践题,因此没关联查choose表)
  def all_score
    sum = 0
    self.challenges.each do |challenge|
      if challenge.st == 0
        sum += challenge.score
      else
        sum += challenge.choose_score
      end
    end
    return sum
  end

  # 实训评分 cnt-评分次数 sum-总评分
  def shixun_preference
    game_star_info = Shixun.find_by_sql("select g.star from
                                         (games g left join (myshixuns m join shixuns s on s.id = m.shixun_id) on m.id = g.myshixun_id)
                                         where g.star != 0 and s.id = #{self.id}")
    if game_star_info.present?
      cnt = game_star_info.count
      sum = game_star_info.map(&:star).sum
      star = (sum / cnt.to_f).round(1)
    else
      5.0
    end
  end

  # 实训评分信息
  # return [实训评分， 5星评分比例， 4星评分比例， 3星评分比例， 2星评分比例， 1星评分比例]
  def shixun_preference_info
    game_star_info = Shixun.find_by_sql("select g.star from
                                         (games g left join (myshixuns m join shixuns s on s.id = m.shixun_id) on m.id = g.myshixun_id)
                                         where g.star != 0 and s.id = #{self.id}")
    star_info = []
    if game_star_info.present?
      5.downto(1) do |i|
        star_info << ((game_star_info.select{|s| s.star == i}.count / game_star_info.count.to_f) * 100).round
      end
      sum = star_info.sum
      max = star_info.max
      # 四舍五入引起5星比例超过100%， 将最大的比例的评分做出调整
      if sum > 100
        star_info = star_info.map{|s| s == max ? s - 1 : s}
      elsif sum < 100
        star_info = star_info.map{|s| s == max ? s + 1 : s}
      end
      cnt = game_star_info.count
      sum = game_star_info.map(&:star).sum
      star_info.unshift((sum / cnt.to_f).round(1))
    else
      star_info = [5.0, 100, 0, 0, 0, 0]
    end

    return star_info
  end

  # 实训的版本库创建者为"educoder" 和"eduforge"
  # "educoder"为原创，"eduforge"为复制的时候用户
  def git_login
    self.fork_from.blank? ? "educoder" : "eduforge"
  end

  def user_evaluate_status
    myshixun = self.myshixuns.where(:user_id => User.current.id).first
    if myshixun.blank?
      "--"
    else
      game_id = myshixun.games.map(&:id)
      output = Output.where(:game_id => game_id).reorder("updated_at desc").first
      if output.blank?
        "--"
      else
        if output.try(:code) == -1
          time_from_now(output.updated_at).to_s + "评测失败"
        else
          time_from_now(output.updated_at).to_s + "评测成功"
        end
      end
    end
  end

  def shixun_tag_name
    self.tag_repertoires.order("name asc").map(&:name)
  end

  def has_web_route
    self.mirror_name.include?('JFinal') || self.mirror_name.include?('PHP') && self.mirror_name.include?('Mysql') || self.mirror_name.include?('Web')
  end

  def script_tag
    if self.mirror_script_id
      MirrorScript.where(:id => self.mirror_script_id).first
    end
  end

  def standrad_script
    mirrors_id = self.mirror_repositories.map(&:id)
    MirrorScript.where(:mirror_repository_id => mirrors_id)
  end

  def shixun_main_mirror_id
    id = ''
    self.mirror_repositories.each do |mirror|
      if mirror.main_type == "1"
        id = mirror.id
      end
    end
    return id
  end

  def shixun_child_mirror_id
    i = 0
    id = ''
    self.mirror_repositories.each do |mirror|
      if mirror.main_type == "0"
        i += 1
        if i == 1
          id = mirror.id
        else
          id = "#{id},#{mirror.id}"
        end
      end
    end
    return id
  end

  def shixun_main_name
    self.mirror_repositories.published_main_mirror.first.try(:type_name)
  end

  def main_mirror
    self.mirror_repositories.published_main_mirror.first
  end

  def shixun_child_name
    name = ''
    index = 0
    self.mirror_repositories.each do |mirror|
      if mirror.main_type == "0"
        index += 1
        if index == 1
          name = mirror.type_name
        else
          name = "#{name};#{mirror.type_name}"
        end
      end
    end
    return name
  end

  def mirror_name
    self.mirror_repositories.map(&:type_name).blank? ? "" : self.mirror_repositories.map(&:type_name)
  end

  # 实训脚本，如果不存在取标准脚本
  #1.若脚本中只有sourceClassName,那么将传入的执行文件名直接替换SOURCECLASSNAME
  #2.若脚本中只有challengeProgramName,那么将传入的执行文件名直接替换challengeProgramName
  #3.若脚本中有challengeProgramName和sourceClassName,那么将传入文件名直接替换challengeProgramName，并对这些文件名做处理得到执行类名，替换sourceClassName（目前是java类型的需如此）
  #  3.1 处理方法：例如src/step1/helloword.java,处理得到：step1.helloword
  def tpm_script
    script = self.evaluate_script || self.mirror_repositories.published_main_mirror.first.try(:script_template)
    if script.present?
      script = script.gsub("\r\n", "\n") # 保持和Linux一致
      source_class_name = []
      challenge_program_name = []
      self.challenges.map(&:exec_path).each do |exec_path|
        challenge_program_name << '"' + exec_path + '"'
        source_class_name = exec_path.split("src/")[1].split(".java")[0]
        source_class_name = source_class_name.nil? ? "" : source_class_name.gsub("/", ".")
      end
      script = if script.include?("sourceClassName") && script.include?("challengeProgramName")
                 script.gsub("CHALLENGEPROGRAMNAMES","#{challenge_program_name.join(" ")}").gsub("SOURCECLASSNAMES", "#{source_class_name.join(" ")}")
               else
                 script.gsub("CHALLENGEPROGRAMNAMES","#{challenge_program_name.join(" ")}").gsub("SOURCECLASSNAMES", "#{challenge_program_name.join(" ")}")
               end
      #Base64.urlsafe_encode64(script)
    end
  end

  # 获取特定格式的实训测试用例
  # params = {:challengeStage => "#{@challenge.position}", :challengeType => "#{@challenge.evaluation_way.to_i}",
  # :challengeProgramName => "#{@challenge.exec_path}",
  # :trainingID => "#{@shixun.id}", :operationEnvironment => @shixun.language}
  def gameInfo
    fragments = []
    testSet = []
    testCases = []
    challenges = self.challenges.includes(:test_sets)
    challenges.each do |challenge|
      pipeline_script = {:challengeStage => "#{challenge.position}",
                         :challengeType => "#{challenge.evaluation_way.to_i}",
                         :challengeProgramName => "#{challenge.exec_path}"}
      fragments << pipeline_script
      # 每一关所有的测试集
      challenge.test_sets.each do |test_set|
        test_cases = {:input => test_set.input, :output => test_set.output}
        testSet << test_cases
      end
      test_sets_list = {:challengeStage => challenge.position.to_s, :challengeTestCases => testSet}
      testCases << test_sets_list
      testSet = []
    end
    gameInfo = {:tpmID => self.id.to_s, :operationEnvironment => "#{self.try(:language)}", :challengeInfo => fragments, :testCases => testCases}
    gameInfo = Base64.urlsafe_encode64(gameInfo.to_json) unless gameInfo.blank?
    return gameInfo
  end

  # id 转换成 identifier
  def to_param
    identifier
  end

  def shixun_trainee
    trainee = ""
    case self.trainee
      when 1
        trainee = "初级学员"
      when 2
        trainee = "中级学员"
      when 3
        trainee = "高级学员"
      when 4
        trainee = "顶级学员"
    end
    trainee
  end

  def shixun_level
    level = ""
    case self.trainee
      when 1
        level = "初级"
      when 2
        level = "中级"
      when 3
        level = "高级"
      when 4
        level = "顶级"
    end
    level
  end

  def owner
    User.find(self.user_id)
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  # 大部分是实践题题，因此加入逻辑判断可以减少查询
  def shixun_score
    self.challenges.map{|c| c.choose_score.to_i }.sum
  end

  def shixun_status
    status = ""
    case self.status
      when 0
        status = "编辑中"
      when 1
        status = "审核中"
      when 2
        status = "已发布"
      when 3
        status = "已关闭"
    end
  end

  def school_count
    user_ids = self.myshixuns.pluck(:user_id)
    num = UserExtensions.where(:user_id => user_ids).pluck(:school_id).uniq.length
  end

  def collaborators
    self.shixun_members.select{|member| member.role == 2} unless self.shixun_members.blank?
  end
end