class CnmoocsService
  include ApplicationHelper
  include GamesHelper

  def get_resources_data params
    page = params[:pageNo].to_i
    limit = params[:pageSize] || 16
    offset = page * limit.to_i
    shixuns = Shixun.select([:id, :identifier, :name, :myshixuns_count, :averge_star, :challenges_count, :trainee]).
        where(status: 2, hidden: 0)
    shixun_count = shixuns.count
    pageCount = ((shixun_count / limit.to_f) == (shixun_count / limit)) ? (shixun_count / limit) : ((shixun_count / limit) + 1)
    shixuns = shixuns.order("myshixuns_count desc").offset(offset).limit(limit)
    shixun_list = shixun_data shixuns
    {error: 0, messages: "请求成功",
     page: {count: shixuns.count, totalCount: shixun_count, pageNo: page, pageSize: limit, pageCount: pageCount},
     data: shixun_list }
  end

  def search_resources params
    page = params[:pageNo].to_i
    limit = params[:pageSize] || 16
    offset = page * limit.to_i
    shixuns = Shixun.select([:id, :identifier, :name, :myshixuns_count, :averge_star, :challenges_count, :trainee]).
        where(status: 2, hidden: 0).where("name like ?", "%#{params[:name]}%")
    shixun_count = shixuns.count
    pageCount = ((shixun_count / limit.to_f) == (shixun_count / limit)) ? (shixun_count / limit) : ((shixun_count / limit) + 1)
    shixuns = shixuns.order("myshixuns_count desc").offset(offset).limit(limit)
    shixun_list = shixun_data shixuns
    {error: 0, messages: "请求成功",
     page: {count: shixuns.count, totalCount: shixun_count, pageNo: page, pageSize: limit, pageCount: pageCount},
     data: shixun_list }
  end

  def find_user params
    user = User.find_by_mail params[:mail]
    if user
      {error: 0, messages: "找到用户"}
    else
      {error: -1, messages: "找不到用户"}
    end
  end

  def create_user params
    user = User.find_by_mail params[:mail]
    if user.blank?
      ActiveRecord::Base.transaction do
        # 如果Educoder中已存在与该OpenI用户的邮箱相同的用户，则会直接跳转到登录educoder的登录页面
        user = User.new(lastname: params[:name], mail: params[:mail], mail_notification: email)
        user.login = generate_login('m')
        user.password = params[:password]
        user.certification = 1
        user.save!
        UserExtensions.create!(user_id: user.id, school_id: School.first.id, identity: 4, gender: 0)
      end
      {error: 0, messages: "创建成功"}
    else
      {error: -1, messages: "邮箱已经存在，请直接使用邮箱登录"}
    end
  end

  def login_educoder params
    user, last_login_on = User.try_to_login(params[:mail], params[:password])
    if user
      self.logged_user = user
      {error: 0, messages: "登录成功"}
    else
      {error: -1, messages: "登录失败，请检查邮箱和密码是否正确"}
    end

  end


  private
  def shixun_data shixuns
    shixun_list = []
    shixuns.includes(:tag_repertoires).each do |shixun|
      tag_name = shixun.tag_repertoires.first.try(:name)
      level = %W(初级 中级 高级 顶级)[shixun.trainee - 1]
      shixun_list << {identifier: shixun.identifier, name: shixun.name, students_count: shixun.myshixuns_count,
                      challenges_count: shixun.challenges_count, score_info: shixun.averge_star, level: level}

    end
    {resouces: shixun_list}
  end

end