class ExerciseBanksController < ApplicationController
  before_action :require_login
  before_action :find_bank
  before_action :bank_admin, only: [:update]

  def show
    @exercise_questions = @bank.exercise_bank_questions&.includes(:exercise_bank_choices, :exercise_bank_shixun_challenges,
                                                                  :exercise_bank_standard_answers).order("question_number ASC")
    @exercise_ques_count = @exercise_questions.size # 全部的题目数
    @exercise_ques_scores = @exercise_questions.pluck(:question_score).sum

    #单选题的数量及分数
    exercise_single_ques = @exercise_questions.find_by_custom("question_type", Exercise::SINGLE)
    @exercise_single_ques_count = exercise_single_ques.size
    @exercise_single_ques_scores = exercise_single_ques.pluck(:question_score).sum

    #多选题的数量及分数
    exercise_double_ques = @exercise_questions.find_by_custom("question_type", Exercise::MULTIPLE)
    @exercise_double_ques_count = exercise_double_ques.size
    @exercise_double_ques_scores = exercise_double_ques.pluck(:question_score).sum

    # 判断题数量及分数
    exercise_ques_judge = @exercise_questions.find_by_custom("question_type", Exercise::JUDGMENT)
    @exercise_ques_judge_count = exercise_ques_judge.size
    @exercise_ques_judge_scores = exercise_ques_judge.pluck(:question_score).sum

    #填空题数量及分数
    exercise_ques_null = @exercise_questions.find_by_custom("question_type", Exercise::COMPLETION)
    @exercise_ques_null_count = exercise_ques_null.size
    @exercise_ques_null_scores = exercise_ques_null.pluck(:question_score).sum

    #简答题数量及分数
    exercise_ques_main = @exercise_questions.find_by_custom("question_type", Exercise::SUBJECTIVE)
    @exercise_ques_main_count = exercise_ques_main.size
    @exercise_ques_main_scores = exercise_ques_main.pluck(:question_score).sum

    #实训题数量及分数
    exercise_ques_shixun = @exercise_questions.find_by_custom("question_type", Exercise::PRACTICAL)
    @exercise_ques_shixun_count = exercise_ques_shixun.size
    @exercise_ques_shixun_scores = exercise_ques_shixun.pluck(:question_score).sum
  end

  def update

  end

  private

  def find_bank
    @bank = ExerciseBank.find_by!(id: params[:id])
    tip_exception(403, "无权限") unless (current_user.certification_teacher? && (@bank.is_public || @bank.user_id == current_user.id)) || current_user.admin?
  end

  def bank_admin
    tip_exception(403, "无权限") unless (current_user.certification_teacher? && @bank.user_id == current_user.id) || current_user.admin?
  end

  def gtask_bank_params
    tip_exception("name参数不能为空") if params[:gtask_bank][:name].blank?
    tip_exception("description参数不能为空") if params[:gtask_bank][:description].blank?
    if @bank.homework_type == 3
      tip_exception("base_on_project参数不能为空") if params[:gtask_bank][:base_on_project].nil?
      tip_exception("min_num参数不能为空") if params[:gtask_bank][:min_num].blank?
      tip_exception("max_num参数不能为空") if params[:gtask_bank][:max_num].blank?
      tip_exception("最小人数不能小于1") if params[:gtask_bank][:min_num].to_i < 1
      tip_exception("最大人数不能小于最小人数") if params[:gtask_bank][:max_num].to_i < params[:gtask_bank][:min_num].to_i
    end
    params.require(:gtask_bank).permit(:name, :description) if @bank.task_type == 1
    params.require(:gtask_bank).permit(:name, :description, :min_num, :max_num, :base_on_project) if @bank.task_type == 2
  end
end