educoder/app/controllers/games_controller.rb

#coding=utf-8
class GamesController < ApplicationController
  layout "base_myshixun"
  skip_before_filter :verify_authenticity_token, :only => [:file_update]
  before_filter :find_myshixun, :only => [:index]
  before_filter :find_game, :only => [:show, :game_build, :entry,:next_step, :outputs_show, :file_edit, :file_update,
                                        :game_status, :change_status, :answer, :minus_score, :refresh_game_list, :reset_original_code, :reset_new_code, :evaluating_choice]
  before_filter :find_repository, :only => [:show, :entry, :file_edit, :file_update, :reset_original_code, :reset_new_code, :html_show]
  before_filter :allowd_manager
  before_filter :allowd_view, :only => [:show]
  before_filter :find__shixun_language, :only => [:show, :entry]
  include ApplicationHelper

  def index
    @games = @myshixun.games.includes(:challenge)
    @games_count = @games.count
    respond_to do |format|
      format.html
      format.js
    end
  end

  # mushixun的版本库必须创建时就创建
  # 首次进入版本库自动打开文件
  # path：""  && path: @game.path
  # @praise 判断是否点赞
  # @tread 判断是否踩
  # git_repository_url @myshixun, "Myshixun"
  # @st 0 实践任务 1 多选任务 2 单选任务
  def show
    # 展示全部实训
    if @game.status == 1
      # 放置页面ajax数据还没获取就关闭
      @game.update_attribute(:status, 0)
    end
    # logger.info("#################%%%%%%#{@game.outputs.first.out_put}")
    # @games = @myshixun.games.includes(:challenge)
    @game_challenge = @game.challenge
    @challenges = Challenge.where(:shixun_id => @myshixun.shixun_id)
    @shixun = @myshixun.shixun
    @praise_count = PraiseTread.where(:praise_tread_object_id => @game_challenge.id, :praise_tread_object_type => "Challenge").count
    @tread_count  = PraiseTread.where(:praise_tread_object_id => @game_challenge.id, :praise_tread_object_type => "ChallengeTread").count
    # @games_count = @games.count
    @st = @game_challenge.st
    @had_done = @game.had_done
    @praise = PraiseTread.where("praise_tread_object_id=? and praise_tread_object_type=? and user_id=?", @game_challenge.id, @game_challenge.class.to_s, User.current.id).first
    @tread = PraiseTread.where("praise_tread_object_id=? and praise_tread_object_type=? and user_id=?", @game_challenge.id, "ChallengeTread", User.current.id).first
    @rev = @rev.nil? ? "master" : @rev
    @type = params[:type]
    challenge_path = @game_challenge.path
    # 用户选项
    @user_answer = @game.outputs.first.actual_output.split("") unless @st == 0 || @game.outputs.blank?
    # 默认打开文件
    logger.info("repository id is #{@repository.try(:id)}, repository's shixun_id =#{@repository.try(:myshixun_id)} shixun_id =#{@repository.try(:shixun_id)}, project_id => #{@repository.try(:project_id)}")
    # 验证challenge文件名的合法性
    if @path.blank? && !challenge_path.blank? && challenge_path.include?(".") && @type != "root"
      @path = challenge_path.strip
      file_content = @g.files(@myshixun.gpid, @path, @rev).content
      if file_content.blank?
        # gitlab缺陷：forked完成，短暂时间内取不了内容的，所以做一个小轮询，间隔0.1秒
        # 超过2秒则失败，需通过页面刷新
        for i in 0..20 do
          sleep(0.1)
          file_content = @g.files(@myshixun.gpid, @path, @rev).content
          unless file_content.blank?
            logger.info("start: file_content is####{file_content.first(6)}")
            break
          end
        end
      end
      @content = tran_base64_decode64(file_content)
    end
    if @content.nil?
      @entries = @repository.entries(@path, @rev)
    end
    # 页面前后端分离数据转换
    test_sets = @game_challenge.test_sets
    unless test_sets.blank?
      @test_sets = test_set_static_data(test_sets)
    end

    logger.info("#################################{@public_test_sets}")
    @test_sets_count = test_sets.count
    @test_sets_hidden_count = test_sets.blank? ? 0 :test_sets.select{|test_set| test_set.is_public == false}.count
    @test_sets_public_count = @test_sets_count - @test_sets_hidden_count
    had_test = Output.where(:game_id => @game.id, :query_index => (@game.query_index - 1))
    @had_test_count = had_test.count
    @had_passed_testsests_error_count = had_test.blank? ? 0 : had_test.select{|had_test| had_test.result == false}.count
    @had_passed_testsests_hidden_count = had_test.blank? ? 0 : had_test.select{|had_test| had_test.result == true && had_test.is_public == false}.count
    @had_passed_testsests_public_count = had_test.blank? ? 0 : had_test.select{|had_test| had_test.result == true && had_test.is_public == true}.count
    @final_score = ((@game.answer_open? || @shixun.status <= 1)  ? 0 : @game.final_score.to_i)
    @had_done = @game.had_done
    @language = @game_challenge.shixun.language
    error_position = had_test.blank? ? nil : had_test.select{|had_test| had_test.result == false}.last
    logger.info("latest output id is #{error_position.id unless error_position.blank?}")
    @latest_output = error_position.try(:out_put).gsub(/\n/, '<br />').gsub(/\t/, '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;').to_json unless error_position.try(:out_put).blank?
    logger.info(@latest_output)

    respond_to do |format|
      format.html
      format.js
    end
  rescue Exception => e
    logger.error("game error##############{e.message}")
    flash[:error] = e.message
  end

  # 代码预览
  def entry
    # entry_and_raw(false)
    file_content = @g.files(@myshixun.gpid, @path, @rev).content
    @content =tran_base64_decode64(file_content)
    # @content = @repository.cat(@path, @rev)
  end

  def file_edit
    # entry_and_raw(false)
    # @content = @repository.cat(@path, @rev).strip
    # # respond_to do |format|
    # #   format.js
    # end
  end

  def file_update
    @g = Gitlab.client
    content = params[:content].try(:strip)
    code_file = @g.edit_file(@myshixun.gpid, :content => params[:content], :file_path => @path, :branch_name => @rev, :commit_message => "shixun exec")
    unless code_file.blank?
      render :json => {:success => "success"}
    end

=begin
    respond_to do |format|
      format.js
    end
  rescue Exception => e
    puts e.message
=end
  end

  # json调用，显示左边的隐藏具体详情@game 字段 msg
  # 刷新右边的输出结果 @game out_put
  def outputs_show
    @output = Output.find(params[:game_output_id])
    respond_to do |format|
      format.js
    end
  end

  # status 0: 未提交测评或者提交测评失败后报错；1：中间状态还没返回值；2：返回值并成功
  # resubmit 唯一随机码，为了区分每一次重新评测结果
  CODES = %W(1 2 3 4 5 6 7 8 9 A B C D E F G H J K L N M O P Q R S T U V W X Y Z)
  def game_build
    game_challenge = @game.challenge
    shixun = @myshixun.shixun
    gitUrl = git_myshixun_url_ip(@myshixun, @myshixun.try(:user_id))
    gitUrl = Base64.urlsafe_encode64(gitUrl)
    taskId = @game.id
    code = CODES.sample(8).join
    # status为2说明是重新评测
    if @game.status == 2
      resubmit = "#{code}_#{@myshixun.id}"
    else
      # 重新评测不影响已通关的实训状态
      @game.update_attributes!(:status => 1) if resubmit.nil?
    end

    gameInfo = shixun.gameInfo
    shixun_tomcat = Redmine::Configuration['shixun_tomcat']
    step = game_challenge.try(:position)
    # 注意：这个地方的参数写的时候不能换行
    params = {:tpiID => "#{@myshixun.id}", :buildID => "#{taskId}", :instanceGitURL  => "#{gitUrl}", :instanceChallenge  => "#{step}", :resubmit => resubmit, :operationEnvironment => "#{shixun.try(:language)}"}
    # uri = URI("#{shixun_tomcat}/bridge/game/gameEvaluate")
    uri = "#{shixun_tomcat}/bridge/game/gameEvaluate"
    res = uri_exec uri, params
    logger.info("#####################buildJobForInstance result is #{res}")
    logger.info("#####################buildJobForInstance params is #{params}")
    if (res && res['code'] != 0)
      @message = "实训云平台繁忙（繁忙等级：86）"
      raise("实训云平台繁忙（繁忙等级：86）")
    end
    render :json => {:result => "success", :resubmit => resubmit}
  rescue Exception => e
    if resubmit.nil?
      @game.update_attributes!(:status => 0)
    end
    logger.error("###################" + e.message)
    #REDO Jenkins服务异常弹框抛出
    render :json => {:result => "failed"}
  end

  # @myshixun -status 1:完成实训
  # 全部通关奖励1000分
  # retry_status 评测的唯一标识，重新评测对以前已产生的结果不造成影响
  # params[:resubmit] 不为空表示已通过该关后重新评测， 重新评测必须是通过该关后才能执行
  # @had_done 1 通关所有关
  def game_status
    game_challenge = @game.challenge
    had_done = @game.had_done
    resubmit_identifier = @game.resubmit_identifier
    shixun = @myshixun.shixun
    score = 0
    tag_count = 0
    logger.info("##### resubmit_identifier is #{resubmit_identifier}")
    if params[:resubmit].blank?   # 非重新评测
      if had_done == 1    # 通过最后一关，即所有关卡
        @myshixun.update_attribute(:status, 1)
      end
      # 通过当前一关
      if @game.status == 2
        @game.update_attribute(:end_time, Time.now)
        game_passed_code(@game.id, game_challenge.try(:path), @myshixun.try(:gpid), 1)
        if !@game.answer_open && shixun.status > 1
          reward_grade(@game.user, @game.id, 'Game', game_challenge.score)
          reward_experience(@game.user, @game.id, 'Game', game_challenge.score)
          score = game_challenge.score
          tag_count = game_challenge.challenge_tags.count
        elsif shixun.status > 1 && @game.answer_open
          score = -game_challenge.score.to_i
          tag_count = 0
        else
          score = "+0"
          tag_count = 0
        end
      end
      game_status = @game.status
    else     # 重新评测
      if params[:resubmit] == resubmit_identifier     # 本次重新评测结果已经返回并存入数据库
        game_status = (@game.retry_status == 2 ? 2 : 0)    # retry_status 2：成功 1： 失败
        if game_status == 2 && had_done == 1  # 重新评测如果评测成功
          had_done =1
          game_passed_code(@game.id, game_challenge.try(:path), @myshixun.try(:gpid), 1)
        else
          had_done = 0
        end
      else
        # game_status 在前端有行为判断，2表示通关；0表示失败；1表示评测中的中间状态
        game_status = 1
        had_done = 0
      end
    end
    test_sets = game_challenge.test_sets
    unless test_sets.blank?
      total_test_sets = test_set_static_data(test_sets)
    end

    logger.info("#################################{@public_test_sets}")
    @test_sets_count = test_sets.count
    @test_sets_hidden_count = test_sets.blank? ? 0 :test_sets.select{|test_set| test_set.is_public == false}.count
    @test_sets_public_count = @test_sets_count - @test_sets_hidden_count
    had_test = Output.where(:game_id => @game.id, :query_index => (@game.query_index - 1))
    @had_test_count = had_test.count
    @had_passed_testsests_error_count = had_test.blank? ? 0 : had_test.select{|had_test| had_test.result == false}.count
    @had_passed_testsests_hidden_count = had_test.blank? ? 0 : had_test.select{|had_test| had_test.result == true && had_test.is_public == false}.count
    @had_passed_testsests_public_count = had_test.blank? ? 0 : had_test.select{|had_test| had_test.result == true && had_test.is_public == true}.count
    @final_score = ((@game.answer_open? || shixun.status <= 1) ? 0 : @game.final_score.to_i)
    error_position = had_test.blank? ? nil : had_test.select{|had_test| had_test.result == false}.last
    @latest_output = error_position.try(:out_put).gsub(/\n/, '<br />').gsub(/\t/, '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;') unless error_position.try(:out_put).blank?
    @language = game_challenge.shixun.language
    render :json => {test_sets: total_test_sets,
                     test_sets_count: @test_sets_count,
                     test_sets_hidden_count: @test_sets_hidden_count,
                     test_sets_public_count: @test_sets_public_count,
                     had_test_count: @had_test_count,
                     had_passed_testsests_error_count: @had_passed_testsests_error_count,
                     had_passed_testsests_hidden_count: @had_passed_testsests_hidden_count,
                     had_passed_testsests_public_count: @had_passed_testsests_public_count,
                     final_score: @final_score,
                     latest_output: @latest_output,
                     status: game_status,
                     had_done: had_done,
                     language: @language,
                     score: score,
                     tag_count: tag_count}
  end

  # 选择题评测(选择题不需要重新评测)
  def evaluating_choice
    @game_challenge = @game.challenge
    user_answer = params[:answer]
    correct = true
    score = 0
    tag_count = 0
    if !user_answer.blank?
      if user_answer.split("").count != @game_challenge.challenge_questions.where(:right_key => true).count
        correct = false
      else
        user_answer.split("").each do |answer|
          question = @game_challenge.challenge_questions.where(:position => answer.to_i).first
          unless question.right_key
            correct = false
            break
          end
        end
      end
    else
      correct = false
    end
    @game.update_attributes(:status => 2, :end_time => Time.now)
    had_done = @game.had_done
    shixun = @myshixun.shixun
    if shixun.status > 1 && !@game.answer_open
      if correct
        #User.current.update_attributes(:grade => (User.current.grade + @game.challenge.score), :experience => (User.current.experience + @game.challenge.score))
        reward_grade(@game.user, @game.id, 'Game', @game_challenge.score)
        reward_experience(@game.user, @game.id, 'Game', @game_challenge.score)
        @game.update_attribute(:final_score, @game_challenge.score)
        score = @game_challenge.score
        tag_count = @game_challenge.challenge_tags.count
      else
        score = "+0"
        tag_count = 0
      end
    elsif shixun.status > 1 && @game.answer_open
      score = -@game_challenge.score.to_i
      tag_count = 0
    else
      score = "+0"
      tag_count = 0
    end
    if @game.outputs.blank?
      Output.create(:game_id => @game.id, :actual_output => user_answer, :result => correct)
    end
    render :json => {correct: correct, had_done: had_done, :grade => User.where(:id => User.current.id).first.grade, score: score, tag_count: tag_count}
  end


  def change_status
    @game.update_attribute(:status, 0)
    outputs = @game.outputs
    if outputs.count == 0
      outputs = ""
    else
      outputs = outputs.map{|result| [result.code, result.id]}
    end
    render :json => {status: @game.status, output: "服务器网络异常", results: outputs, had_done: 0}
  end

  # 获取等待的任务数
  # 如果没有等待任务页面上将不显示
  # msg： -1 不存在等待的任务
  # 如果该方法异常则直接返回0，跳过等待
  def waiting_info
    begin
      shixun_tomcat = Redmine::Configuration['shixun_tomcat']
      params = {:buildID => "#{@game.id}"}
      uri = URI("#{shixun_tomcat}/jenkins-exec/api/getWaitingTime")
      res = uri_exec uri, params
      if (res && res['code'] != 0)
        raise("获取等待任务数异常")
      end
      task_count = res['msg'].to_i
      task_count > 0 ? task_count : 0
      render :json => {task_count: task_count}
    rescue
      render :json => {task_count: 0}
    end
  end

  # 自动推送下一个任务
  def next_step
    render_403 if @game.status != 2
    next_game = @game.next_game
    next_game.update_attributes(:status => 0, :open_time => Time.now) if next_game.status == 3
    respond_to do |format|
      format.js{ redirect_to myshixun_game_path(next_game, :myshixun_id => @myshixun)}
    end
  end

  # 获取答案，第一次查看需扣掉该关卡的积分
  # 如果已看过，下次可以免费查看
  # viewed 1: 直接查看 2：弹框提示将要扣除积分，确定后显示内容 3：弹框提示分数不够
  def answer
    challenge = @game.challenge
    @challenge_score = challenge.score.to_i
    # 已经开启过
    @score = User.current.grade.to_i - @challenge_score
    @answer = challenge.answer
    if challenge.shixun.status < 2 || @game.answer_open
      @viewed = 1
    else
      if @score >= 0
        @viewed = 2
      else
        @viewed = 3
      end
    end
    respond_to do |format|
      format.js
      format.html
    end
  end

  def minus_score
    @game_challenge = @game.challenge
    user = User.current
    challenge_score = @game_challenge.score.to_i
    reward_grade(user, @game.id, 'Answer', -challenge_score)
    @answer = @game_challenge.answer
    @game.update_column(:answer_open, true)
    respond_to do |format|
      format.js
    end
  end

  def refresh_game_list
    myshixun_id = params[:myshixun_id]
    @myshixun = Myshixun.find_by_identifier(myshixun_id)
    @challenges = Challenge.where(:shixun_id => @myshixun.shixun_id)

    respond_to do |format|
      format.js
    end
  end

  def reset_original_code
    begin
      @shixun = @myshixun.shixun
      @g = Gitlab.client
      game_code = GameCode.where(:game_id => @game.id).first
      content = game_code.try(:original_code)
      if content.nil?
        raise("初始代码为空，代码重置失败")
      end
      @path = params[:path]
      @rev = @rev.nil? ? "master" : @rev
      message = "file reset"
      update_gitlab_file(content, @path, @rev, message)
      file_content = @g.files(@myshixun.gpid, @path, @rev).content
      @content = tran_base64_decode64(file_content)
      if @content.nil?
        raise("初始代码为空，代码重置失败")
        # @entries = @repository.entries(@path, @rev)
      end
      respond_to do |format|
        format.js
      end
    rescue Exception => e
      @error_messages = e.message
    end
  end

  def reset_new_code
    begin
      @shixun = @myshixun.shixun
      @g = Gitlab.client
      game_code = GameCode.where(:game_id => @game.id).first
      content = game_code.try(:new_code)
      if content.nil?
        raise("示例代码为空，代码重置失败")
      end
      @path = params[:path]
      @rev = @rev.nil? ? "master" : @rev
      message = "file reset"
      update_gitlab_file(content, @path, @rev, message)
      file_content = @g.files(@myshixun.gpid, @path, @rev).content
      @content = tran_base64_decode64(file_content)
      if @content.nil?
        raise("示例代码为空，代码重置失败")
        # @entries = @repository.entries(@path, @rev)
      end
      respond_to do |format|
        format.js
      end
    rescue Exception => e
      @error_messages = e.message
    end
  end

  private
  def update_gitlab_file content, path, rev, message
    code_file = @g.edit_file(@myshixun.gpid, :content => content, :file_path => path, :branch_name => rev, :commit_message => "#{message}")
    if code_file.nil?
      raise("网络异常，文件更新失败")
    end
  end

  def test_set_static_data test_sets
    test_result = []
    unless test_sets.blank?
      test_sets.each do |test_set|
        output = Output.where(:game_id => @game.id, :test_set_position => test_set.position).first
        actual_output = (output.try(:actual_output).gsub(/\n/, '<br />').gsub(/\t/, '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;') unless output.try(:actual_output).blank?)
        result = output.try(:result)
        public_result = {:is_public => (test_set.is_public ? 1 : 0), :result => result, :input => test_set.input,
                         :actual_output => actual_output, :output => test_set.output}
        logger.info("1111#################################{public_result.to_json}")
        test_result << public_result.to_json
      end
    end
    test_result = test_result.blank? ? test_result : test_result.join(",")
    logger.info("222#################################{test_result}")
    return test_result
  end

  def entry_and_raw(is_raw)
    @entry = @repository.entry(@path, @rev)
    (show_error_not_found; return) unless @entry

    # If the entry is a dir, show the browser
    (show; return) if @entry.is_dir?

    @content = @repository.cat(@path, @rev)
    (show_error_not_found; return) unless @content
    if is_raw || (@content.size && @content.size > Setting.file_max_size_displayed.to_i.kilobyte) || !is_entry_text_data?(@content, @path)
      # Force the download
      send_opt = { :filename => filename_for_content_disposition(@path.split('/').last) }
      send_type = Redmine::MimeType.of(@path)
      send_opt[:type] = send_type.to_s if send_type
      send_opt[:disposition] = (Redmine::MimeType.is_type?('image', @path) && !is_raw ? 'inline' : 'attachment')
      send_data @content, send_opt
    else
      # Prevent empty lines when displaying a file with Windows style eol
      # TODO: UTF-16
      # Is this needs? AttachmentsController reads file simply.
      @content.gsub!("\r\n", "\n")
      @changeset = @repository.find_changeset_by_name(@rev)
    end
  end

  def is_entry_text_data?(ent, path)
    # UTF-16 contains "\x00".
    # It is very strict that file contains less than 30% of ascii symbols
    # in non Western Europe.
    return true if Redmine::MimeType.is_type?('text', path)
    # Ruby 1.8.6 has a bug of integer divisions.
    # http://apidock.com/ruby/v1_8_6_287/String/is_binary_data%3F
    return false if ent.is_binary_data?
    true
  end

  def find_repository
    @repository = @myshixun.repository
    render_404 if @myshixun.gpid.nil?
    @path = params[:path].is_a?(Array) ? params[:path].join('/') : params[:path].to_s
    @g = Gitlab.client
    @g_project = @g.project(@myshixun.gpid)
    @g_default_branch = @g_project.default_branch
    # gitlab端获取默认分支
    @rev = params[:rev].blank? ? @g_default_branch : params[:rev].to_s.strip
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  def allowd_manager
    render_403 unless (User.current.manager_of_myshixun?(@myshixun) || User.current.admin? || User.current.id == @myshixun.shixun.try(:user_id))
  end

  # 判断成员是否允许查看
  def allowd_view
    render_403 if (@game.status == 3 && User.current.id != @myshixun.shixun.try(:user_id))
  end

  def find__shixun_language
    language = @myshixun.shixun.try(:language)
    @language = language_switch(language)
  end

  # Find myshixun of id params[:id]
  def find_myshixun
    myshixun_id = params[:myshixun_id] || (params[:game] && params[:game][:myshixun_id])
    @myshixun = Myshixun.find_by_identifier(myshixun_id)
    if @myshixun.nil?
      render_404
      return
    end
  rescue ActiveRecord::RecordNotFound
    render_404
  end

  def find_game
    # myshixun_id = params[:myshixun_id]
    @game = Game.find_by_identifier(params[:id])
    if @game.nil?
      render_404
      return
    end
    @myshixun = @game.myshixun
  rescue ActiveRecord::RecordNotFound
    render_404
  end
end