require "image_processing/vips"

module LdapManager
  class UpdateAvatar < LdapManagerService
    def initialize(user:)
      @user = user
      @dn = user.dn
    end

    def call
      unless @user.avatar.attached?
        Rails.logger.error { "Cannot store empty jpegPhoto for user #{@user.cn}" }
        return false
      end

      img_data = @user.avatar.blob.download
      jpg_data = process(img_data)

      result = replace_attribute(@dn, :jpegPhoto, jpg_data)
      result == 0
    end

    private

    def process(data)
      @user.avatar.blob.open do |file|
        processed = ImageProcessing::Vips
          .source(file)
          .resize_to_fill(256, 256)
          .convert("jpeg")
          .saver(strip: true)
          .call
        processed.read
      end
    rescue Vips::Error => e
      Sentry.capture_exception(e) if Setting.sentry_enabled?
      Rails.logger.error { "Image processing failed for LDAP avatar: #{e.message}" }
      nil
    end
  end
end