module Sct
  class HostfileCommand

    def execute(args, options)
      SctCore::Helper.ensure_permissions

      entries = [
        {
          host: "spend.cloud.local",
          comment: "The spend cloud ingress url"
        },
        {
          host: "mail.spend.cloud.local",
          comment: "The spend cloud mail url"
        },
        {
          host: "config.spend.cloud.local",
          comment: "The spend cloud config url"
        },
        {
          host: "spend-cloud.spend.cloud.local",
          comment: "The spend cloud web app url"
        },
        {
          host: "docs.spend.cloud.local",
          comment: "The spend cloud documentation url"
        },
        {
          host: "henk.spend.cloud.local",
          comment: "The spend cloud Henk web-interface"
        }
      ]

      is_windows = SctCore::Helper::is_windows?

      if is_windows
        ingress_address = "127.0.0.1"
      else
        ingress_address = `sudo -u $SUDO_USER minikube ip`.chomp
      end

      windows_hosts_path = "/mnt/c/Windows/System32/drivers/etc/hosts"

      if options.path
        hosts_paths = [options.path]
      else
        hosts_paths = ["/etc/hosts"]

        if is_windows
          hosts_paths << windows_hosts_path
        end
      end

      hosts_paths.each do |hosts_path|
        line_ending = hosts_path == windows_hosts_path ? "\r\n" : "\n"

        lines = File.readlines hosts_path

        # select the lines that do not include any entry
        lines = lines.select { |line| ! entries.any? { |entry| line.include? " #{entry[:host]}" } }

        # add entries
        entries.each do |entry|
          lines << "#{ingress_address} #{entry[:host]} # #{entry[:comment]}#{line_ending}"
        end

        File.write hosts_path, lines.join

        UI.success("Patched #{hosts_path} with #{ingress_address}")
      end

    end

  end

end