require 'hive/messages/nil_job'

module Hive
  module Messages
    class Job < Hive::Messages::Base
      include Hive::Representers::JobRepresenter

      attribute :command, String
      attribute :job_id, Integer
      attribute :repository, String
      attribute :execution_directory, String
      attribute :target, Hash
      attribute :execution_variables, ExecutionVariables
      attribute :reservation_details, Hash
      attribute :device_id, Integer
      attribute :running_count, Integer
      attribute :failed_count, Integer
      attribute :errored_count, Integer
      attribute :passed_count, Integer
      attribute :state, String
      attribute :result, String
      attribute :exit_value, Integer
      attribute :message, String
      attribute :result_details, String
      attribute :test_results, Hash
      attribute :log_files, Hash

      validates :command, :job_id, presence: true

      class << self

        def reserve(queues, reservation_details)
          job = self.new
          job.reservation_details = reservation_details
          begin
            job.patch(uri: Hive::Paths::Queues.job_reservation_url(queues), as: "application/json")
          rescue => e
            Hive::Messages::NilJob.new(e)
          end
        end
      end

      def prepare(device_id)
        self.device_id = device_id
        self.patch(uri: Hive::Paths::Jobs.prepare_url(self.job_id), as: "application/json")
      end

      def start
        self.patch(uri: Hive::Paths::Jobs.start_url(self.job_id), as: "application/json")
      end

      def end(exit_value)
        self.exit_value = exit_value
        self.patch(uri: Hive::Paths::Jobs.end_url(self.job_id), as: "application/json")
      end

      def update_results(details)
        self.result_details = details[:result_details]
        counts = details.slice(:running_count, :failed_count, :errored_count, :passed_count)
        counts.each_pair do |count_key, count_value|
          self.send("#{count_key}=", count_value)
        end
        self.patch(uri: Hive::Paths::Jobs.update_results_url(self.job_id), as: "application/json")
      end

      def report_artifact(artifact_path)
        url = URI.parse(Hive::Paths::Artifacts.create_url(self.job_id))

        basename = Pathname.new(artifact_path).basename.to_s

        mime =  MimeMagic.by_path(artifact_path)
        mime_type = mime ? mime.type : 'text/plain'

        net_http_args = http_args(url)

        File.open(artifact_path) do |artifact|
          request = Net::HTTP::Post::Multipart.new url.path, "data" => UploadIO.new(artifact, mime_type, basename)
          res = http_response(url, request, net_http_args)
          Hive::Messages::Artifact.new.from_json(res.body)
        end
      end

      def fetch(uri_str, limit = 10)
        raise ArgumentError, 'too many HTTP redirects' if limit == 0

        url = URI.parse(uri_str) 
        net_http_args = http_args(url)
    
        request = Net::HTTP::Get.new(url)
        response = http_response(url, request, net_http_args)
    
        case response
        when Net::HTTPSuccess then
          response
        when Net::HTTPRedirection then
          location = response['location']
          warn "redirected to #{location}"
          fetch(location, limit - 1)
        when Net::HTTPNotFound then
          raise "Build not found at location #{uri_str}"
        else
          response.value
        end
      end

      def complete
        self.patch(uri: Hive::Paths::Jobs.complete_url(self.job_id), as: "application/json")
      end

      def error(message)
        self.message = message
        self.patch(uri: Hive::Paths::Jobs.error_url(self.job_id), as: "application/json")
      end

      private

      def http_response(url, request, net_http_args)
        Net::HTTP.start(url.host, url.port, net_http_args) do |http|
            http.request(request)
        end
      end

      def http_args(url)
        net_http_args = {:use_ssl => url.instance_of?(URI::HTTPS)}
        if Hive::Messages.configuration.pem_file
          pem = File.read(Hive::Messages.configuration.pem_file)
          net_http_args[:cert] = OpenSSL::X509::Certificate.new(pem)
          net_http_args[:key] = OpenSSL::PKey::RSA.new(pem)
          net_http_args[:verify_mode] = Hive::Messages.configuration.ssl_verify_mode
        end
        net_http_args
      end
      
    end
  end
end