module KPM
  module SystemProxy
    module CpuInformation
      class << self
        def fetch
          cpu_info = nil
          if OS.windows?
            cpu_info = fetch_windows
          elsif OS.linux?
            cpu_info = fetch_linux
          elsif OS.mac?
            cpu_info = fetch_mac
          end

          cpu_info
        end

        def get_labels
          labels = [{:label => :cpu_detail},
                    {:label => :value}]
          labels
        end

        private
          def fetch_linux
            cpu_data = `cat /proc/cpuinfo 2>&1`.gsub("\t",'')
            cpu = get_hash(cpu_data)
            cpu
          end

          def fetch_mac
            cpu_data = `system_profiler SPHardwareDataType | grep -e "Processor" -e "Cores" -e "Cache" 2>&1`
            cpu = get_hash(cpu_data)
            cpu
          end

          def fetch_windows
            cpu_name = `wmic cpu get Name`.split("\n\n")
            cpu_caption = `wmic cpu get Caption`.split("\n\n")
            cpu_max_clock_speed = `wmic cpu get MaxClockSpeed`.split("\n\n")
            cpu_device_id = `wmic cpu get DeviceId`.split("\n\n")
            cpu_status = `wmic cpu get Status`.split("\n\n")

            cpu = Hash.new
            cpu[cpu_name[0].to_s.strip] = {:cpu_detail => cpu_name[0].to_s.strip, :value => cpu_name[1].to_s.strip}
            cpu[cpu_caption[0].to_s.strip] = {:cpu_detail => cpu_caption[0].to_s.strip, :value => cpu_caption[1].to_s.strip}
            cpu[cpu_max_clock_speed[0].to_s.strip] = {:cpu_detail => cpu_max_clock_speed[0].to_s.strip, :value => cpu_max_clock_speed[1].to_s.strip}
            cpu[cpu_device_id[0].to_s.strip] = {:cpu_detail => cpu_device_id[0].to_s.strip, :value => cpu_device_id[1].to_s.strip}
            cpu[cpu_status[0].to_s.strip] = {:cpu_detail => cpu_status[0].to_s.strip, :value => cpu_status[1].to_s.strip}

            cpu
          end

          def get_hash(data)
            cpu = Hash.new

            unless data.nil?
              data.split("\n").each do |info|
                infos = info.split(':')

                unless infos[0].to_s.strip.eql?('flags')
                  cpu[infos[0].to_s.strip] = {:cpu_detail => infos[0].to_s.strip, :value => infos[1].to_s.strip}
                end
              end
            end

            cpu
          end
        end
    end
  end
end