// Bind sets the appropriate labels
func (o *RouterSelection) Bind(flag *pflag.FlagSet) {
	flag.DurationVar(&o.ResyncInterval, "resync-interval", 10*time.Minute, "The interval at which the route list should be fully refreshed")
	flag.StringVar(&o.LabelSelector, "labels", cmdutil.Env("ROUTE_LABELS", ""), "A label selector to apply to the routes to watch")
	flag.StringVar(&o.FieldSelector, "fields", cmdutil.Env("ROUTE_FIELDS", ""), "A field selector to apply to routes to watch")
	flag.StringVar(&o.ProjectLabelSelector, "project-labels", cmdutil.Env("PROJECT_LABELS", ""), "A label selector to apply to projects to watch; if '*' watches all projects the client can access")
	flag.StringVar(&o.NamespaceLabelSelector, "namespace-labels", cmdutil.Env("NAMESPACE_LABELS", ""), "A label selector to apply to namespaces to watch")
}

// BindFlags adds any flags that are common to all kubectl sub commands.
func (f *Factory) BindFlags(flags *pflag.FlagSet) {
	// any flags defined by external projects (not part of pflags)
	util.AddFlagSetToPFlagSet(flag.CommandLine, flags)

	// This is necessary as github.com/spf13/cobra doesn't support "global"
	// pflags currently.  See https://github.com/spf13/cobra/issues/44.
	util.AddPFlagSetToPFlagSet(pflag.CommandLine, flags)

	// Hack for global access to validation flag.
	// TODO: Refactor out after configuration flag overhaul.
	if f.flags.Lookup("validate") == nil {
		f.flags.Bool("validate", false, "If true, use a schema to validate the input before sending it")
	}

	// Merge factory's flags
	util.AddPFlagSetToPFlagSet(f.flags, flags)

	// Globally persistent flags across all subcommands.
	// TODO Change flag names to consts to allow safer lookup from subcommands.
	// TODO Add a verbose flag that turns on glog logging. Probably need a way
	// to do that automatically for every subcommand.
	flags.BoolVar(&f.clients.matchVersion, FlagMatchBinaryVersion, false, "Require server version to match client version")

	// Normalize all flags that are comming from other packages or pre-configurations
	// a.k.a. change all "_" to "-". e.g. glog package
	flags.SetNormalizeFunc(util.WordSepNormalizeFunc)
}

func addFlags(fs *pflag.FlagSet) {
	fs.StringVar(&apiServer, "server", "", "API server IP.")
	fs.IntVar(&kubeletPort, "kubelet-port", 10250, "Port on which HollowKubelet should be listening.")
	fs.IntVar(&kubeletReadOnlyPort, "kubelet-read-only-port", 10255, "Read-only port on which Kubelet is listening.")
	fs.StringVar(&nodeName, "name", "fake-node", "Name of this Hollow Node.")
	fs.IntVar(&serverPort, "api-server-port", 443, "Port on which API server is listening.")
}

func rktFlagUsages(flagSet *pflag.FlagSet) string {
	x := new(bytes.Buffer)

	flagSet.VisitAll(func(flag *pflag.Flag) {
		if len(flag.Deprecated) > 0 || flag.Hidden {
			return
		}
		format := ""
		if len(flag.Shorthand) > 0 && len(flag.ShorthandDeprecated) == 0 {
			format = "  -%s, --%s"
		} else {
			format = "   %s   --%s"
		}
		if len(flag.NoOptDefVal) > 0 {
			format = format + "["
		}
		if flag.Value.Type() == "string" {
			// put quotes on the value
			format = format + "=%q"
		} else {
			format = format + "=%s"
		}
		if len(flag.NoOptDefVal) > 0 {
			format = format + "]"
		}
		format = format + "\t%s\n"
		shorthand := flag.Shorthand
		fmt.Fprintf(x, format, shorthand, flag.Name, flag.DefValue, flag.Usage)
	})

	return x.String()
}

func (s *CloudProviderOptions) AddFlags(fs *pflag.FlagSet) {
	fs.StringVar(&s.CloudProvider, "cloud-provider", s.CloudProvider,
		"The provider for cloud services. Empty string for no provider.")

	fs.StringVar(&s.CloudConfigFile, "cloud-config", s.CloudConfigFile,
		"The path to the cloud provider configuration file. Empty string for no configuration file.")
}

// BindClientConfigSecurityFlags adds flags for the supplied client config
func BindClientConfigSecurityFlags(config *restclient.Config, flags *pflag.FlagSet) {
	flags.BoolVar(&config.Insecure, "insecure-skip-tls-verify", config.Insecure, "If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure.")
	flags.StringVar(&config.CertFile, "client-certificate", config.CertFile, "Path to a client certificate file for TLS.")
	flags.StringVar(&config.KeyFile, "client-key", config.KeyFile, "Path to a client key file for TLS.")
	flags.StringVar(&config.CAFile, "certificate-authority", config.CAFile, "Path to a cert. file for the certificate authority")
	flags.StringVar(&config.BearerToken, "token", config.BearerToken, "If present, the bearer token for this request.")
}

// TODO: should this override by destination path, or does swarm handle that?
func updateMounts(flags *pflag.FlagSet, mounts *[]swarm.Mount) {
	if !flags.Changed(flagMount) {
		return
	}

	*mounts = flags.Lookup(flagMount).Value.(*MountOpt).Value()
}

func BindSignerCertOptions(options *CreateSignerCertOptions, flags *pflag.FlagSet, prefix string) {
	flags.StringVar(&options.CertFile, prefix+"cert", "openshift.local.config/master/ca.crt", "The certificate file.")
	flags.StringVar(&options.KeyFile, prefix+"key", "openshift.local.config/master/ca.key", "The key file.")
	flags.StringVar(&options.SerialFile, prefix+"serial", "openshift.local.config/master/ca.serial.txt", "The serial file that keeps track of how many certs have been signed.")
	flags.StringVar(&options.Name, prefix+"name", DefaultSignerName(), "The name of the signer.")
	flags.BoolVar(&options.Overwrite, prefix+"overwrite", options.Overwrite, "Overwrite existing cert files if found.  If false, any existing file will be left as-is.")
}

func (c *HollowNodeConfig) addFlags(fs *pflag.FlagSet) {
	fs.StringVar(&c.KubeconfigPath, "kubeconfig", "/kubeconfig/kubeconfig", "Path to kubeconfig file.")
	fs.IntVar(&c.KubeletPort, "kubelet-port", 10250, "Port on which HollowKubelet should be listening.")
	fs.IntVar(&c.KubeletReadOnlyPort, "kubelet-read-only-port", 10255, "Read-only port on which Kubelet is listening.")
	fs.StringVar(&c.NodeName, "name", "fake-node", "Name of this Hollow Node.")
	fs.IntVar(&c.ServerPort, "api-server-port", 443, "Port on which API server is listening.")
}

func (c *Config) updateFlag(name string, flags *flag.FlagSet) {
	if f := flags.Lookup(name); f != nil {
		val := c.Viper.Get(name)
		strVal := fmt.Sprintf("%v", val)
		f.DefValue = strVal
	}
}

func durationFlag(
	f *pflag.FlagSet, valPtr *time.Duration, flagInfo cliflags.FlagInfo, defaultVal time.Duration,
) {
	f.DurationVarP(valPtr, flagInfo.Name, flagInfo.Shorthand, defaultVal, makeUsageString(flagInfo))

	setFlagFromEnv(f, flagInfo)
}

// DynStringSet creates a `Flag` that represents `map[string]struct{}` which is safe to change dynamically at runtime.
// Unlike `pflag.StringSlice`, consecutive sets don't append to the slice, but override it.
func DynStringSet(flagSet *flag.FlagSet, name string, value []string, usage string) *DynStringSetValue {
	set := buildStringSet(value)
	dynValue := &DynStringSetValue{ptr: unsafe.Pointer(&set)}
	flag := flagSet.VarPF(dynValue, name, "", usage)
	MarkFlagDynamic(flag)
	return dynValue
}

func installServiceFlags(flags *pflag.FlagSet) {
	flServiceName = flags.String("service-name", "docker", "Set the Windows service name")
	flRegisterService = flags.Bool("register-service", false, "Register the service and exit")
	flUnregisterService = flags.Bool("unregister-service", false, "Unregister the service and exit")
	flRunService = flags.Bool("run-service", false, "")
	flags.MarkHidden("run-service")
}

func printFlags(out *bytes.Buffer, flags *pflag.FlagSet) {
	flags.VisitAll(func(flag *pflag.Flag) {
		if flag.Hidden {
			return
		}
		format := "**--%s**=%s\n\t%s\n\n"
		if flag.Value.Type() == "string" {
			// put quotes on the value
			format = "**--%s**=%q\n\t%s\n\n"
		}

		defValue := flag.DefValue
		if flag.Value.Type() == "duration" {
			defValue = "0"
		}

		if len(flag.Annotations["manpage-def-value"]) > 0 {
			defValue = flag.Annotations["manpage-def-value"][0]
		}

		// Todo, when we mark a shorthand is deprecated, but specify an empty message.
		// The flag.ShorthandDeprecated is empty as the shorthand is deprecated.
		// Using len(flag.ShorthandDeprecated) > 0 can't handle this, others are ok.
		if !(len(flag.ShorthandDeprecated) > 0) && len(flag.Shorthand) > 0 {
			format = "**-%s**, " + format
			fmt.Fprintf(out, format, flag.Shorthand, flag.Name, defValue, flag.Usage)
		} else {
			fmt.Fprintf(out, format, flag.Name, defValue, flag.Usage)
		}
	})
}

func deploymentDefaults(fs *pflag.FlagSet, f *fg.Flags, args []string) {
	// Merge Options
	fs.VisitAll(func(flag *pflag.Flag) {
		if !flag.Changed {
			value, ok := f.Options.Get(flag.Name)
			if ok {
				svalue := fmt.Sprintf("%v", value)
				err := fs.Set(flag.Name, svalue)
				if err != nil {
					Exitf("Error in option '%s': %#v\n", flag.Name, err)
				}
			}
		}
	})

	if f.Local {
		f.StopDelay = 5 * time.Second
		f.DestroyDelay = 3 * time.Second
		f.SliceDelay = 5 * time.Second
	}

	if f.JobPath == "" && len(args) >= 1 {
		f.JobPath = args[0]
	}
	if f.ClusterPath == "" && len(args) >= 2 {
		f.ClusterPath = args[1]
	}
}

func (m *NetworkManager) AddFlags(fs *flag.FlagSet) {
	fs.StringVar(&m.ConfigFile, "config-file", "/etc/kubernetes/network.conf",
		"Network manager configuration")
	// DEPRECATED
	fs.StringVar(&m.config.KubeUrl, "master", m.config.KubeUrl,
		"Kubernetes API endpoint")
}

func setupClientCommandLineFlags(fs *pflag.FlagSet) {
	fs.StringVar(&env, "env", env, "Environment of Apple's APNS and Feedback service gateways. For production use specify \"production\", for testing specify \"sandbox\".")
	fs.Uint64Var(&commandsQueueSize, "max-notifications", commandsQueueSize, "Number of notification that can be queued for processing at once. Once the queue is full all requests to raw push notification endpoint will result in 503 Service Unavailable response.")
	fs.Uint32Var(&numberOfWorkers, "workers", numberOfWorkers, "Number of workers that concurently process push notifications. Defaults to 2 * Number of CPU cores.")
	fs.StringVar(&certifcateFile, "cert", certifcateFile, "Absolute path to certificate file. Certificate is expected be in PEM format.")
	fs.StringVar(&certificatePrivateKeyFile, "cert-key", certificatePrivateKeyFile, "Absolute path to certificate private key file. Certificate key is expected be in PEM format.")
}

func updateMounts(flags *pflag.FlagSet, mounts *[]mounttypes.Mount) error {

	mountsByTarget := map[string]mounttypes.Mount{}

	if flags.Changed(flagMountAdd) {
		values := flags.Lookup(flagMountAdd).Value.(*opts.MountOpt).Value()
		for _, mount := range values {
			if _, ok := mountsByTarget[mount.Target]; ok {
				return fmt.Errorf("duplicate mount target")
			}
			mountsByTarget[mount.Target] = mount
		}
	}

	// Add old list of mount points minus updated one.
	for _, mount := range *mounts {
		if _, ok := mountsByTarget[mount.Target]; !ok {
			mountsByTarget[mount.Target] = mount
		}
	}

	newMounts := []mounttypes.Mount{}

	toRemove := buildToRemoveSet(flags, flagMountRemove)

	for _, mount := range mountsByTarget {
		if _, exists := toRemove[mount.Target]; !exists {
			newMounts = append(newMounts, mount)
		}
	}
	sort.Sort(byMountSource(newMounts))
	*mounts = newMounts
	return nil
}

func genFlagResult(flags *pflag.FlagSet) []cmdOption {
	result := make([]cmdOption, 0)

	flags.VisitAll(func(flag *pflag.Flag) {
		// Todo, when we mark a shorthand is deprecated, but specify an empty message.
		// The flag.ShorthandDeprecated is empty as the shorthand is deprecated.
		// Using len(flag.ShorthandDeprecated) > 0 can't handle this, others are ok.
		if !(len(flag.ShorthandDeprecated) > 0) && len(flag.Shorthand) > 0 {
			opt := cmdOption{
				flag.Name,
				flag.Shorthand,
				flag.DefValue,
				forceMultiLine(flag.Usage),
			}
			result = append(result, opt)
		} else {
			opt := cmdOption{
				Name:         flag.Name,
				DefaultValue: forceMultiLine(flag.DefValue),
				Usage:        forceMultiLine(flag.Usage),
			}
			result = append(result, opt)
		}
	})

	return result
}

func manPrintFlags(out *bytes.Buffer, flags *pflag.FlagSet) {
	flags.VisitAll(func(flag *pflag.Flag) {
		if len(flag.Deprecated) > 0 {
			return
		}
		format := ""
		if len(flag.Shorthand) > 0 {
			format = "**-%s**, **--%s**"
		} else {
			format = "%s**--%s**"
		}
		if len(flag.NoOptDefVal) > 0 {
			format = format + "["
		}
		if flag.Value.Type() == "string" {
			// put quotes on the value
			format = format + "=%q"
		} else {
			format = format + "=%s"
		}
		if len(flag.NoOptDefVal) > 0 {
			format = format + "]"
		}
		format = format + "\n\t%s\n\n"
		fmt.Fprintf(out, format, flag.Shorthand, flag.Name, flag.DefValue, flag.Usage)
	})
}