require "pathname"

require "multi_json"
require "oj"

PATH = Pathname("/Users/karmi/Contracts/Elasticsearch/Projects/Clients/Go/go-elasticsearch/tmp/elasticsearch/rest-api-spec/src/main/resources/rest-api-spec/api/")


Dir[PATH.join("*.json")].entries.sort.each do |filepath|
  next if File.basename(filepath) =~ /^_/

  puts "* " + File.basename(filepath)

  data = {}
  json = MultiJson.load(File.new(filepath))

  api_name = json.keys.first
  api_spec = json.values.first

  # Documentation
  #
  data["documentation"] = {
    "url" => api_spec["documentation"]
  }
  # TODO: "description"

  # Extract paths
  #
  paths = []
  api_spec["url"]["paths"].each do |path|
    parts = api_spec["url"]["parts"].select { |key, value| path.include? "{#{key}}" } if api_spec["url"]["parts"]

    payload = {
      "path" => path,
      "method" => api_spec["methods"].first
    }
    payload["parts"] = parts if parts and not parts.empty?

    paths << payload
  end

  # Extract and recombine deprecated paths
  #
  api_spec["url"]["deprecated_paths"].each do |path|
    payload = {
      "path" => path["path"],
      "method" => api_spec["methods"].first,
      "parts" => api_spec["url"]["parts"].select { |key, value| path["path"].include? "{#{key}}" }
    }
    payload["deprecated"] = {
      "version" => path["version"],
      "description" => path["description"]
    }

    payload["parts"] = Hash[payload["parts"].map do |key, value|
      if api_spec["url"]["paths"].none? { |p| p.include? "{#{key}}" }
        value["deprecated"] = true
      end
      [key, value]
    end]

    paths << payload
  end if api_spec["url"]["deprecated_paths"]

  data["url"] = { "paths" => paths }

  # Params
  #
  data["params"] = api_spec["url"]["params"] if api_spec["url"]["params"]

  # Body
  #
  data["body"] = api_spec["body"] if api_spec["body"]

  output = MultiJson.dump({api_name => data}, indent: 2)
  puts output, "\n"

  File.open(filepath, 'w') { |f| f.write output }
end