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: iqdb_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

# An API client for Danbooru's internal IQDB instance. Can add images, remove
# images, and search for images in IQDB.
#
# @see https://github.com/danbooru/iqdb
class IqdbClient
  LOW_SIMILARITY_THRESHOLD = 0.0
  HIGH_SIMILARITY_THRESHOLD = 65.0
  DUPLICATE_THRESHOLD 
    
    def search(post_id: nil, media_asset_id: nil, file: nil, hash: nil, url: nil, image_url: nil, file_url: nil, similarity: LOW_SIMILARITY_THRESHOLD, high_similarity: HIGH_SIMILARITY_THRESHOLD, limit: 20)
      limit = limit.to_i.clamp(1, 1000)
      similarity = similarity.to_f.clamp(0.0, 100.0)
      high_similarity = high_similarity.to_f.clamp(0.0, 100.0)

      if file.present?
        file = file.tempfile
      elsif url.present?
        extractor = Source::Extractor.find(url)
        raise Error, "Search failed: #{url} has multiple images. Enter the URL of a single image" if extractor.image_urls.size > 1
        raise Error, "Search failed: #{url} has no images" if extractor.image_urls.size == 0

        download_url = extractor.image_urls.first
        file = Source::Extractor.find(download_url).download_file!(download_url)
      elsif image_url.present?
        file = Source::Extractor.find(image_url).download_file!(image_url)
      elsif file_url.present?
        file = Source::Extractor.find(file_url).download_file!(file_url)
      elsif post_id.present?
        file = Post.find(post_id).file(:"180x180")
      elsif media_asset_id.present?
        file = MediaAsset.find(media_asset_id).variant("360x360").open_file
      end