require 'json'
require 'net/http'
require 'threat_agent'

module ThreatAgent
  # The APClient object handles most of the interactions with the ThreatAgent
  # API
  #
  # @author Erran Carey <me@errancarey.com>
  class APIClient
    # Intializes the ThreatAgent::APIClient object
    #
    # @param [String] key the user's API key
    # @param [String] sup the user's supplemental key
    # @return [APIClient] the initialized ThreatAgent::APIClient object
    def initialize(key, sup)
      @key = key
      @sup = sup
    end

    # Authenticates against threatagent.com
    #
    # @param [Hash] credentials credentials to attempt authentication with
    # @option [String] key the user's API key
    # @return [Boolean] whether the specified credentials where able to
    #   authenticate with the ThreatAgent API
    def authenticate(credentials = {})
      raise NotImplementedError
    end

    # Whether or not authentication was successful
    #
    # @return [Boolean] true if the ThreatAgent::APIClient has been
    #   authentication, false otherwise
    def authenticated?
      # @authenticated
      raise NotImplementedError
    end

    # Send a request to the ThreatAgent API
    #
    # @param [String] action the type of request to send
    # @param [Hash] params parameters to send along with the action to
    #   api.threatagent.com
    def request(action, params = {})
      action = action.to_s.gsub(/-|_/, '/')
      params.merge!({ key: @key, sup: @sup })
      encoded_params = URI.encode_www_form(params.keys.zip(params.values))

      config = ThreatAgent::Config

      if File.exists?("#{ENV['HOME']}/.threatagent")
        ThreatAgent::Config.from_file("#{ENV['HOME']}/.threatagent")
      end

      api_endpoint = "#{config[:endpoint]}/api/#{config[:api_version]}/"
      uri = URI("#{api_endpoint}#{action}?#{encoded_params}")

      resp = Net::HTTP.get_response(uri)
      json = resp.body
      JSON.parse(json)
    end
  end
end