class Weapps::CoursesController < Weapps::BaseController
  before_action :require_login
  before_action :user_course_identity, except: [:create]
  before_action :teacher_allowed, except: [:create, :show, :shixun_homework_category]

  def create
    return render_error("只有老师身份才能创建课堂") unless current_user.is_teacher?
    course = Course.new(tea_id: current_user.id)
    Weapps::CreateCourseService.call(course, course_params)
    render_ok

  rescue ApplicationService::Error => ex
    render_error(ex.message)
  end

  def edit
    @course = current_course
  end

  def update
    Weapps::UpdateCourseService.call(current_course, update_course_params)
    render_ok
  end

  def show
    @course = current_course
    @current_user = current_user
  end

  def shixun_homework_category
    @categories = current_course.shixun_course_modules.first&.course_second_categories
  end

  # 教师列表
  def teachers
    @course = current_course
    if @course.try(:id) != 1309 || current_user.admin? || current_user.try(:id) == 15582
      @teacher_list = @course.course_members.joins(:user).where("course_members.role in (1, 2, 3)")
    else
      @teacher_list = @course.course_members.joins(:user).where("(course_members.role in (1, 3) or (course_members.user_id = #{current_user.id}
                                          and course_members.role = 2))")
    end

    @teacher_list_size = @teacher_list.size

    @applications_size = CourseMessage.unhandled_join_course_requests_by_course(@course).size

    @teacher_list = @teacher_list.preload(user: [user_extension: :school]).order("CONVERT(CONCAT(users.lastname, users.firstname) USING gbk) COLLATE gbk_chinese_ci asc")
  end



  private

  def course_params
    params.permit(:name, :course_list_name, :credit, course_module_types: [])
  end

  def update_course_params
    params.permit(:name, :course_list_name, :credit)
  end

  def current_course
    @_current_course = Course.find params[:id]
  end

  def teacher_allowed
    return render_forbidden unless @user_course_identity < Course::STUDENT
  end
end