class Competition < ApplicationRecord

  has_many :competition_modules, dependent: :destroy
  has_many :unhidden_competition_modules, -> { where(hidden: false) }, class_name: 'CompetitionModule'

  has_many :competition_stages, dependent: :destroy
  has_many :competition_stage_sections, dependent: :destroy
  has_one :current_stage_section, -> { where('end_time > NOW()') }, class_name: 'CompetitionStageSection'

  has_many :competition_teams, dependent: :destroy
  has_many :team_members, dependent: :destroy
  has_many :chart_rules, dependent: :destroy

  has_many :competition_scores, dependent: :destroy

  has_many :competition_staffs, dependent: :destroy
  has_one :teacher_staff, -> { where(category: :teacher) }, class_name: 'CompetitionStaff'
  has_one :member_staff, -> { where.not(category: :teacher) }, class_name: 'CompetitionStaff'
  has_one :competition_mode_setting, dependent: :destroy

  has_many :informs, as: :container, dependent: :destroy
  has_many :attachments, as: :container, dependent: :destroy

  has_many :competition_awards, dependent: :destroy
  has_many :competition_schools, dependent: :destroy
  has_many :sponsor_schools, -> { where(source: :sponsor) }, class_name: 'CompetitionSchool'  # 主办方
  has_many :region_schools, -> { where(source: :region) }, class_name: 'CompetitionSchool'   # 开放范围

  has_many :competition_managers, dependent: :destroy
  has_many :managers, through: :competition_managers, source: :user

  after_create :create_competition_modules

  def mode_type
    case mode
    when 1
      "实训"
    when 2
      "课堂"
    when 3
      "教学"
    when 4
      "托管"
    else
      "--"
    end
  end

  def sponsor_schools_name
    sponsor_schools.map{|sponsor| sponsor.school.name}
  end

  def region_schools_name
    region_schools.map{|region| region.school.name}
  end

  def competition_status
    if !status
      com_status = "nearly_published"
    elsif end_time.nil? || end_time > Time.now
      com_status = "progressing"
    else
      com_status = "ended"
    end
    com_status
  end

  def teacher_staff_num
    teacher_staff ? "#{teacher_staff.minimum}~#{teacher_staff.maximum}" : "--"
  end

  def member_staff_num
    member_staff ? "#{member_staff.minimum}~#{member_staff.maximum}" : "--"
  end

  # 是否上架
  def published?
    status?
  end

  # 即将发布
  def nearly_published?
    !published? && published_at.present?
  end

  # 是否为个人赛
  def personal?
    competition_staffs.sum(:maximum).to_i == 1 || (competition_staffs.nil? && max_num == 1)
  end

  # 报名是否结束
  def enroll_ended?
    enroll_end_time.blank? || enroll_end_time < Time.now
  end

  # 是否已经报名
  def enrolled?(user)
    team_members.exists?(user_id: user.id)
  end

  # 是否开放
  def open?(user)
    user_school_id = user.user_extension&.school_id.to_i
    region_schools.size == 0 || region_schools.exists?(school_id: user_school_id)
  end

  # 是否禁止教师报名
  def teacher_enroll_forbidden?
    teacher_staff.blank? || teacher_staff.maximum.zero?
  end

  # 是否禁止学生报名
  def member_enroll_forbidden?
    member_staff.blank? || member_staff.maximum.zero?
  end

  # 老师是否能多次报名
  def teacher_multiple_limited?
    teacher_staff&.mutiple_limited?
  end

  # 队员是否能多次报名
  def member_multiple_limited?
    member_staff&.mutiple_limited?
  end

  def max_min_stage_time
    CompetitionStageSection.find_by_sql("SELECT MAX(end_time) as max_end_time, MIN(start_time) as min_start_time,
                                         competition_stage_id FROM competition_stage_sections WHERE competition_id = #{id}
                                         GROUP BY competition_stage_id order by competition_stage_id")
  end

  def all_module_types
    %w[home enroll inform chart resource]
  end

  def max_stage_end_time
    competition_stages.map(&:max_end_time).max
  end

  # def awards_count
  #   competition_awards.pluck(:num)&.sum > 0 ? competition_awards.pluck(:num)&.sum : 20
  # end

  def manager?(user)
    user && competition_managers.exists?(user_id: user.id)
  end

  private

  def get_module_name type
    case type
    when 'home'     then '首页'
    when 'enroll'   then '报名'
    when 'inform'   then '通知公告'
    when 'chart'    then '排行榜'
    when 'resource' then '资料下载'
    else ''
    end
  end

  def create_competition_modules
    CompetitionModule.bulk_insert(*%i[competition_id module_type name position created_at updated_at]) do |worker|
      all_module_types.each_with_index do |type, index|
        worker.add(competition_id: id, module_type: type, name: get_module_name(type), position: index + 1, )
      end
    end
  end
end