require 'rest-client'

module PKParse
  class Client
    attr_accessor :files

    def initialize(files)
      @files = files
    end

    def parse
      response = RestClient.post("#{PKParse.service_url}/parse", form_key => files, multipart: true)
      response = JSON.parse(response, symbolize_keys: true)

      PKParse::Response.new(response)
    rescue RestClient::Exception => e
      raise PKParse::ResponseError.new(e)
    rescue JSON::ParserError => e
      raise PKParse::Error.new(e, "Received invalid parse response")
    end

    private

    def form_key
      # RestClient will add brackets to array form values, but go-pkparse-server
      # expects brackets regardless of multivalue or not.
      if files.size > 1
        "pkmn"
      else
        "pkmn[]"
      end
    end
  end
end