class KPM::TomcatManager

def download
  uri = URI.parse(DOWNLOAD_URL)
  path = nil
  Dir.mktmpdir do |dir|
    file = Pathname.new(dir).join('tomcat.tar.gz')
    @logger.info "Starting download of #{DOWNLOAD_URL} to #{file}"
    Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
      File.open(file, 'wb+') do |file|
        http.get(uri.path) do |body|
          file.write(body)
        end
      end
    end
    path = Utils.unpack_tgz(file.to_s, @tomcat_dir, true)
  end
  @logger.info "Successful installation of #{DOWNLOAD_URL} to #{path}"
  path
end

def help
  "Tomcat installed at #{@tomcat_dir}
t script: #{@tomcat_dir.join('bin').join('startup.sh').to_s}
 script: #{@tomcat_dir.join('bin').join('shutdown.sh').to_s}
: #{@tomcat_dir.join('logs').to_s}"
end

def initialize(tomcat_dir, logger)
  @tomcat_dir = Pathname.new(tomcat_dir)
  @logger = logger
end

def setup
  # Remove default webapps
  %w(ROOT docs examples host-manager manager).each do |webapp|
    FileUtils.rm_rf(@tomcat_dir.join('webapps').join(webapp))
  end
  # Update Root.xml
  root_xml_dir = @tomcat_dir.join('conf').join('Catalina').join('localhost')
  FileUtils.mkdir_p(root_xml_dir)
  File.write(root_xml_dir.join('ROOT.xml'), '<Context></Context>')
  # Setup default properties
  setenv_sh_path = @tomcat_dir.join('bin').join('setenv.sh')
  File.write(setenv_sh_path, 'export CATALINA_OPTS="$CATALINA_OPTS -XX:PermSize=512m -XX:MaxPermSize=1G -Xms1G -Xmx2G"')
  @tomcat_dir.join('webapps').join('ROOT.war').to_s
end