You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: deep_danbooru_client.rb
    path of file: ./repos/danbooru/app/logical
    
    the code of the file until where you have to start completion: # frozen_string_literal: true

class DeepDanbooruClient
  attr_reader :http

  def initialize(http: Danbooru::
    
  def tags!(file)
    html = post!("/upload", form: {
      file: HTTP::FormData::File.new(file)
    }).parse

    tags = html.css("tbody tr").map do |row|
      tag_name = row.css("td:first-child").text
      confidence = row.css("td:last-child").text

      # If tag_name is "rating:safe", then make a mock tag.
      tag = Tag.find_by_name_or_alias(tag_name) || Tag.new(name: tag_name).freeze
      [tag, confidence.to_f]
    end.to_h

    tags
  end

  def post!(url, **options)
    http.post!("http://dev.kanotype.net:8003/deepdanbooru/#{url}", **options)
  end
end