class KPM::SystemProxy::OsInformation

def build_hash(data)
  os = {}
  unless data.nil?
    data.split("\n").each do |info|
      infos = info.split(':')
      os[infos[0].to_s.strip] = { os_detail: infos[0].to_s.strip, value: infos[1].to_s.strip }
    end
  end
  os
end

def fetch
  os_information = nil
  if OS.windows?
    os_information = fetch_windows
  elsif OS.linux?
    os_information = fetch_linux
  elsif OS.mac?
    os_information = fetch_mac
  end
  os_information
end

def fetch_linux
  os_data = `lsb_release -a 2>&1`
  if os_data.nil? || os_data.include?('lsb_release: not found')
    os_data = `cat /etc/issue 2>&1`
    os_data = 'Description:' + os_data.gsub('\n \l', '')
  end
  build_hash(os_data)
end

def fetch_mac
  os_data = `sw_vers`
  build_hash(os_data)
end

def fetch_windows
  os_data = `systeminfo | findstr /C:"OS"`
  build_hash(os_data)
end

def initialize
  @os_info = fetch
  @labels =  [{ label: :os_detail },
              { label: :value }]
end