class UsersService
  include ApplicationHelper
  include AccountHelper
  include AvatarHelper
  #将用户注册的功能函数写这里
  #参数约定
  #成功返回注册后的User实例，失败直接抛异常

  def register(params)
    @user = User.new
    @user.admin = false
    @user.register
    @user.login = params[:login]
    @user.mail = params[:mail]
    password = params[:password]
    password_confirmation = params[:password_confirmation]
    should_confirmation_password = params[:should_confirmation_password]
    if !password.blank? && !password_confirmation.blank? && should_confirmation_password
      @user.password, @user.password_confirmation = password, password_confirmation
    elsif !password.blank? && !should_confirmation_password
      @user.password = password
    else
      @user.password = ""
    end
    case Setting.self_registration
      when '1'
        @user = email_activation_register(@user)
      when '3'
        @user = automatically_register(@user)
      else
        @user = administrator_manually__register(@user)
    end
    if @user.id != nil
      ue = @user.user_extensions ||= UserExtensions.new
      ue.user_id = @user.id
      ue.save
    end
    @user
  end

  #显示用户
  #id用户id
  def show_user(params)
    @user = User.find(params[:id])
    img_url = url_to_avatar(@user)
    gender = @user.user_extensions.gender.nil? ? 0 : @user.user_extensions.gender
    work_unit = ""
    if @user.user_extensions.identity == 0 || @user.user_extensions.identity == 1
      work_unit = @user.user_extensions.school.name unless  @user.user_extensions.school.nil?
    elsif  @user.user_extensions.identity == 3
      work_unit = @user.user_extensions.occupation
    elsif @user.user_extensions.identity == 2
      work_unit = @user.firstname
    end
    location = ""
    location << (@user.user_extensions.location || '')
    location << (@user.user_extensions.location_city || '')
    {:id => @user.id, :img_url => img_url, :nickname => @user.login, :gender => gender, :work_unit => work_unit, :mail => @user.mail, :location => location, :brief_introduction => @user.user_extensions.brief_introduction}
  end

  #编辑用户
  def edit_user params
    @user = User.find(params[:id])
    fileio = params[:file]

    @se = @user.extensions
    if @user.user_extensions.identity == 0 || @user.user_extensions.identity == 1
      @se.school_id = params[:occupation]
    elsif @user.user_extensions.identity == 3
      @se.occupation = params[:occupation]
    elsif @user.user_extensions.identity == 2
      @user.firstname = params[:occupation]
    end
    @se.brief_introduction = params[:brief_introduction]
    @se.gender = params[:gender]
    @se.location = params[:province] if params[:province]
    @se.location_city = params[:city] if params[:city]
    raise @se.errors.full_message unless @se.save
    unless  fileio.nil?
      file = fileio[:tempfile]
      diskfile=disk_filename(@user.class.to_s, @user.id)
      @image_file = fileio[:name]
      @urlfile='/' << File.join("images", "avatars", avatar_directory(@user.class.to_s), avatar_filename(@user.id, @image_file))

      path = File.dirname(diskfile)
      unless File.directory?(path)
        FileUtils.mkdir_p(path)
      end
      File.rename(file.path, @urlfile)
      begin
        f = Magick::ImageList.new(diskfile)
        # gif格式不再做大小处理
        if f.format != 'GIF'
          width = 300.0
          proportion = (width/f[0].columns)
          height = (f[0].rows*proportion)
          f.resize_to_fill!(width, height)
          f.write(diskfile)
        end

      rescue Exception => e
        logger.error "[Error] avatar : users_service#edit_user ===> #{e}"
      end
    end
    @se
  end

  #关注列表
  def user_watcher params
    @user = User.find(params[:id])
    User.watched_by(@user.id)
  end

end