func (w *modelCommandWrapper) SetFlags(f *gnuflag.FlagSet) {
	if !w.skipModelFlags {
		f.StringVar(&w.modelName, "m", "", "Model to operate in. Accepts [<controller name>:]<model name>")
		f.StringVar(&w.modelName, "model", "", "")
	}
	w.ModelCommand.SetFlags(f)
}

// AddFlags injects common agent flags into f.
func (c *agentConf) AddFlags(f *gnuflag.FlagSet) {
	// TODO(dimitern) 2014-02-19 bug 1282025
	// We need to pass a config location here instead and
	// use it to locate the conf and the infer the data-dir
	// from there instead of passing it like that.
	f.StringVar(&c.dataDir, "data-dir", util.DataDir, "directory for juju data")
}

// SetFlags implements Command.SetFlags, then calls the wrapped command's SetFlags.
func (w *sysCommandWrapper) SetFlags(f *gnuflag.FlagSet) {
	if w.setControllerFlags {
		f.StringVar(&w.controllerName, "c", "", "Controller to operate in")
		f.StringVar(&w.controllerName, "controller", "", "")
	}
	w.ControllerCommand.SetFlags(f)
}

// SetFlags is defined on the cmd.Command interface.
func (c *listCommand) SetFlags(f *gnuflag.FlagSet) {
	c.SubnetCommandBase.SetFlags(f)
	c.Out.AddFlags(f, "yaml", output.DefaultFormatters)

	f.StringVar(&c.SpaceName, "space", "", "Filter results by space name")
	f.StringVar(&c.ZoneName, "zone", "", "Filter results by zone name")
}

func (c *RunCommand) SetFlags(f *gnuflag.FlagSet) {
	f.BoolVar(&c.noContext, "no-context", false, "do not run the command in a unit context")
	f.StringVar(&c.relationId, "r", "", "run the commands for a specific relation context on a unit")
	f.StringVar(&c.relationId, "relation", "", "")
	f.StringVar(&c.remoteUnitName, "remote-unit", "", "run the commands for a specific remote unit in a relation context on a unit")
	f.BoolVar(&c.forceRemoteUnit, "force-remote-unit", false, "run the commands for a specific relation context, bypassing the remote unit check")
}

// SetFlags implements Command.SetFlags.
func (c *showControllerCommand) SetFlags(f *gnuflag.FlagSet) {
	c.JujuCommandBase.SetFlags(f)
	f.BoolVar(&c.showPasswords, "show-password", false, "Show password for logged in user")
	c.out.AddFlags(f, "yaml", map[string]cmd.Formatter{
		"yaml": cmd.FormatYaml,
		"json": cmd.FormatJson,
	})
}

func (c *statusHistoryCommand) SetFlags(f *gnuflag.FlagSet) {
	c.ModelCommandBase.SetFlags(f)
	f.StringVar(&c.outputContent, "type", "unit", "Type of statuses to be displayed [agent|workload|combined|machine|machineInstance|container|containerinstance]")
	f.IntVar(&c.backlogSize, "n", 0, "Returns the last N logs (cannot be combined with --days or --date)")
	f.IntVar(&c.backlogSizeDays, "days", 0, "Returns the logs for the past <days> days (cannot be combined with -n or --date)")
	f.StringVar(&c.backlogDate, "date", "", "Returns logs for any date after the passed one, the expected date format is YYYY-MM-DD (cannot be combined with -n or --days)")
	f.BoolVar(&c.isoTime, "utc", false, "Display time as UTC in RFC3339 format")
}

// SetFlags handles known option flags.
func (c *restoreCommand) SetFlags(f *gnuflag.FlagSet) {
	c.CommandBase.SetFlags(f)
	f.StringVar(&c.constraintsStr, "constraints", "", "set model constraints")
	f.BoolVar(&c.bootstrap, "b", false, "Bootstrap a new state machine")
	f.StringVar(&c.filename, "file", "", "Provide a file to be used as the backup.")
	f.StringVar(&c.backupId, "id", "", "Provide the name of the backup to be restored")
	f.BoolVar(&c.buildAgent, "build-agent", false, "Build binary agent if bootstraping a new machine")
}

func (c *validateImageMetadataCommand) SetFlags(f *gnuflag.FlagSet) {
	c.out.AddFlags(f, "yaml", output.DefaultFormatters)
	f.StringVar(&c.providerType, "p", "", "the provider type eg ec2, openstack")
	f.StringVar(&c.metadataDir, "d", "", "directory where metadata files are found")
	f.StringVar(&c.series, "s", "", "the series for which to validate (overrides env config series)")
	f.StringVar(&c.region, "r", "", "the region for which to validate (overrides env config region)")
	f.StringVar(&c.endpoint, "u", "", "the cloud endpoint URL for which to validate (overrides env config endpoint)")
	f.StringVar(&c.stream, "stream", "", "the images stream (defaults to released)")
}

func (c *listCredentialsCommand) SetFlags(f *gnuflag.FlagSet) {
	c.CommandBase.SetFlags(f)
	f.BoolVar(&c.showSecrets, "show-secrets", false, "Show secrets")
	c.out.AddFlags(f, "tabular", map[string]cmd.Formatter{
		"yaml":    cmd.FormatYaml,
		"json":    cmd.FormatJson,
		"tabular": formatCredentialsTabular,
	})
}

// SetFlags implements part of the cmd.Command interface.
func (c *defaultsCommand) SetFlags(f *gnuflag.FlagSet) {
	c.ControllerCommandBase.SetFlags(f)

	c.out.AddFlags(f, "tabular", map[string]cmd.Formatter{
		"yaml":    cmd.FormatYaml,
		"json":    cmd.FormatJson,
		"tabular": formatDefaultConfigTabular,
	})
	f.Var(cmd.NewAppendStringsValue(&c.reset), "reset", "Reset the provided comma delimited keys")
}

// SetFlags implements part of the cmd.Command interface.
func (c *configCommand) SetFlags(f *gnuflag.FlagSet) {
	c.ModelCommandBase.SetFlags(f)

	c.out.AddFlags(f, "tabular", map[string]cmd.Formatter{
		"json":    cmd.FormatJson,
		"tabular": formatConfigTabular,
		"yaml":    cmd.FormatYaml,
	})
	f.BoolVar(&c.reset, "reset", false, "Reset the provided keys to be empty")
}

// SetFlags is defined on the cmd.Command interface.
func (c *createCommand) SetFlags(f *gnuflag.FlagSet) {
	c.SubnetCommandBase.SetFlags(f)
	f.BoolVar(&c.IsPublic, "public", false, "enable public access with shadow addresses")
	f.BoolVar(&c.IsPrivate, "private", true, "disable public access with shadow addresses")

	// Because SetFlags is called before Parse, we cannot
	// use f.Visit() here to check both flags were not
	// specified at once. So we store the flag set and
	// defer the check to Init().
	c.flagSet = f
}

// getFlags returns the flags with the given names. Only flags that are set and
// whose name is included in flagNames are included.
func getFlags(flagSet *gnuflag.FlagSet, flagNames []string) []string {
	flags := make([]string, 0, flagSet.NFlag())
	flagSet.Visit(func(flag *gnuflag.Flag) {
		for _, name := range flagNames {
			if flag.Name == name {
				flags = append(flags, flagWithMinus(name))
			}
		}
	})
	return flags
}

// SetFlags implements cmd.Command.SetFlags.
func (c *ShowServiceCommand) SetFlags(f *gnuflag.FlagSet) {
	c.ModelCommandBase.SetFlags(f)
	const defaultFormat = "tabular"
	c.out.AddFlags(f, defaultFormat, map[string]cmd.Formatter{
		defaultFormat: FormatSvcTabular,
		"yaml":        cmd.FormatYaml,
		"json":        cmd.FormatJson,
	})

	f.BoolVar(&c.details, "details", false, "show detailed information about resources used by each unit.")
}

func (c *addCommand) SetFlags(f *gnuflag.FlagSet) {
	c.ModelCommandBase.SetFlags(f)
	f.StringVar(&c.Series, "series", "", "The charm series")
	f.IntVar(&c.NumMachines, "n", 1, "The number of machines to add")
	f.StringVar(&c.ConstraintsStr, "constraints", "", "Additional machine constraints")
	f.Var(disksFlag{&c.Disks}, "disks", "Constraints for disks to attach to the machine")
}

func (c *toolsMetadataCommand) SetFlags(f *gnuflag.FlagSet) {
	f.StringVar(&c.metadataDir, "d", "", "local directory in which to store metadata")
	// If no stream is specified, we'll generate metadata for the legacy tools location.
	f.StringVar(&c.stream, "stream", "", "simplestreams stream for which to generate the metadata")
	f.BoolVar(&c.clean, "clean", false, "remove any existing metadata for the specified stream before generating new metadata")
	f.BoolVar(&c.public, "public", false, "tools are for a public cloud, so generate mirrors information")
}

func (c *RelationSetCommand) SetFlags(f *gnuflag.FlagSet) {
	f.Var(c.relationIdProxy, "r", "specify a relation by id")
	f.Var(c.relationIdProxy, "relation", "")

	c.settingsFile.SetStdin()
	f.Var(&c.settingsFile, "file", "file containing key-value pairs")

	f.StringVar(&c.formatFlag, "format", "", "deprecated format flag")
}

func (c *statusCommand) SetFlags(f *gnuflag.FlagSet) {
	c.ModelCommandBase.SetFlags(f)
	f.BoolVar(&c.isoTime, "utc", false, "Display time as UTC in RFC3339 format")
	f.BoolVar(&c.color, "color", false, "Force use of ANSI color codes")

	defaultFormat := "tabular"

	c.out.AddFlags(f, defaultFormat, map[string]cmd.Formatter{
		"yaml":    cmd.FormatYaml,
		"json":    cmd.FormatJson,
		"short":   FormatOneline,
		"oneline": FormatOneline,
		"line":    FormatOneline,
		"tabular": c.FormatTabular,
		"summary": FormatSummary,
	})
}

// SetFlags implements Command.SetFlags.
func (c *modelsCommand) SetFlags(f *gnuflag.FlagSet) {
	c.ControllerCommandBase.SetFlags(f)
	f.StringVar(&c.user, "user", "", "The user to list models for (administrative users only)")
	f.BoolVar(&c.all, "all", false, "Lists all models, regardless of user accessibility (administrative users only)")
	f.BoolVar(&c.listUUID, "uuid", false, "Display UUID for models")
	f.BoolVar(&c.exactTime, "exact-time", false, "Use full timestamps")
	c.out.AddFlags(f, "tabular", map[string]cmd.Formatter{
		"yaml":    cmd.FormatYaml,
		"json":    cmd.FormatJson,
		"tabular": c.formatTabular,
	})
}