class AttendancesController < ApplicationController
  before_action :require_login
  before_action :find_course, only: [:index, :student_attendances, :history_attendances]
  before_action :find_attendance, except: [:index, :student_attendances, :history_attendances]
  before_action :user_course_identity

  def index
    current_date = Date.current
    current_end_time = Time.current.strftime("%H:%M:%S")

    if params[:history]
      @attendances = @course.course_attendances.where("attendance_date < '#{current_date}' or
                            (attendance_date = '#{current_date}' and end_time < '#{current_end_time}')")
      if @user_course_identity == Course::STUDENT
        member = @course.students.find_by(user_id: current_user.id)
        group_ids = [member&.course_group_id.to_i, 0]
        @attendances = @attendances.joins(:course_attendance_groups).where(course_attendance_groups: {course_group_id: group_ids})

        attendance_ids = @attendances.pluck(:id)
        @normal_count = @course.course_member_attendances.where(course_member_id: member&.id, course_attendance_id: attendance_ids, attendance_status: "NORMAL").size
        @leave_count = @course.course_member_attendances.where(course_member_id: member&.id, course_attendance_id: attendance_ids, attendance_status: "LEAVE").size
        @absence_count = @course.course_member_attendances.where(course_member_id: member&.id, course_attendance_id: attendance_ids, attendance_status: "ABSENCE").size
      end
    else
      @attendances = @course.course_attendances.where("attendance_date > '#{current_date}' or
                            (attendance_date = '#{current_date}' and end_time > '#{current_end_time}')")
    end
    @attendances_count = @attendances.size

    @attendances = @attendances.order("attendance_date desc, start_time desc")
    @attendances = paginate @attendances.includes(:user, :course_member_attendances)
  end

  def statistics

  end

  def history_attendances
    current_date = Date.current
    current_end_time = Time.current.strftime("%H:%M:%S")

    @history_attendances = @course.course_attendances.where("attendance_date < '#{current_date}' or
                            (attendance_date = '#{current_date}' and end_time < '#{current_end_time}')").order("id desc")
    @all_history_count = @history_attendances.size
    @history_attendances = paginate @history_attendances.includes(:course_member_attendances)
  end

  private
  def find_attendance
    @attendance = CourseAttendance.find params[:id]
    @course = @attendance.course
  end
end