// NewDaemonCli returns a pre-configured daemon CLI
func NewDaemonCli() *DaemonCli {
	daemonFlags = cli.Subcmd("daemon", nil, "Enable daemon mode", true)

	// TODO(tiborvass): remove InstallFlags?
	daemonConfig := new(daemon.Config)
	daemonConfig.InstallFlags(daemonFlags, presentInHelp)
	daemonConfig.InstallFlags(flag.CommandLine, absentFromHelp)
	registryOptions := new(registry.Options)
	registryOptions.InstallFlags(daemonFlags, presentInHelp)
	registryOptions.InstallFlags(flag.CommandLine, absentFromHelp)
	daemonFlags.Require(flag.Exact, 0)

	return &DaemonCli{
		Config:          daemonConfig,
		registryOptions: registryOptions,
	}
}

// NewDaemonCli returns a pre-configured daemon CLI
func NewDaemonCli() *DaemonCli {
	// TODO(tiborvass): remove InstallFlags?
	daemonConfig := new(daemon.Config)
	daemonConfig.LogConfig.Config = make(map[string]string)
	daemonConfig.ClusterOpts = make(map[string]string)

	if runtime.GOOS != "linux" {
		daemonConfig.V2Only = true
	}

	daemonConfig.InstallFlags(flag.CommandLine, presentInHelp)
	configFile := flag.CommandLine.String([]string{daemonConfigFileFlag}, defaultDaemonConfigFile, "Daemon configuration file")
	flag.CommandLine.Require(flag.Exact, 0)

	return &DaemonCli{
		Config:      daemonConfig,
		commonFlags: cliflags.InitCommonFlags(),
		configFile:  configFile,
	}
}

func loadDaemonCliConfig(config *daemon.Config, daemonFlags *flag.FlagSet, commonConfig *cli.CommonFlags, configFile string) (*daemon.Config, error) {
	config.Debug = commonConfig.Debug
	config.Hosts = commonConfig.Hosts
	config.LogLevel = commonConfig.LogLevel
	config.TLS = commonConfig.TLS
	config.TLSVerify = commonConfig.TLSVerify
	config.TLSOptions = daemon.CommonTLSOptions{}

	if commonConfig.TLSOptions != nil {
		config.TLSOptions.CAFile = commonConfig.TLSOptions.CAFile
		config.TLSOptions.CertFile = commonConfig.TLSOptions.CertFile
		config.TLSOptions.KeyFile = commonConfig.TLSOptions.KeyFile
	}

	if configFile != "" {
		c, err := daemon.MergeDaemonConfigurations(config, daemonFlags, configFile)
		if err != nil {
			if daemonFlags.IsSet(daemonConfigFileFlag) || !os.IsNotExist(err) {
				return nil, fmt.Errorf("unable to configure the Docker daemon with file %s: %v\n", configFile, err)
			}
		}
		// the merged configuration can be nil if the config file didn't exist.
		// leave the current configuration as it is if when that happens.
		if c != nil {
			config = c
		}
	}

	return config, nil
}

func loadDaemonCliConfig(config *daemon.Config, flags *flag.FlagSet, commonConfig *cliflags.CommonFlags, configFile string) (*daemon.Config, error) {
	config.Debug = commonConfig.Debug
	config.Hosts = commonConfig.Hosts
	config.LogLevel = commonConfig.LogLevel
	config.TLS = commonConfig.TLS
	config.TLSVerify = commonConfig.TLSVerify
	config.CommonTLSOptions = daemon.CommonTLSOptions{}

	if commonConfig.TLSOptions != nil {
		config.CommonTLSOptions.CAFile = commonConfig.TLSOptions.CAFile
		config.CommonTLSOptions.CertFile = commonConfig.TLSOptions.CertFile
		config.CommonTLSOptions.KeyFile = commonConfig.TLSOptions.KeyFile
	}

	if configFile != "" {
		c, err := daemon.MergeDaemonConfigurations(config, flags, configFile)
		if err != nil {
			if flags.IsSet(daemonConfigFileFlag) || !os.IsNotExist(err) {
				return nil, fmt.Errorf("unable to configure the Docker daemon with file %s: %v\n", configFile, err)
			}
		}
		// the merged configuration can be nil if the config file didn't exist.
		// leave the current configuration as it is if when that happens.
		if c != nil {
			config = c
		}
	}

	if err := daemon.ValidateConfiguration(config); err != nil {
		return nil, err
	}

	// Regardless of whether the user sets it to true or false, if they
	// specify TLSVerify at all then we need to turn on TLS
	if config.IsValueSet(cliflags.TLSVerifyKey) {
		config.TLS = true
	}

	// ensure that the log level is the one set after merging configurations
	cliflags.SetDaemonLogLevel(config.LogLevel)

	return config, nil
}

// NewDaemonCli returns a pre-configured daemon CLI
func NewDaemonCli() *DaemonCli {
	daemonFlags := cli.Subcmd("daemon", nil, "Enable daemon mode", true)

	// TODO(tiborvass): remove InstallFlags?
	daemonConfig := new(daemon.Config)
	daemonConfig.LogConfig.Config = make(map[string]string)
	daemonConfig.ClusterOpts = make(map[string]string)

	if runtime.GOOS != "linux" {
		daemonConfig.V2Only = true
	}

	daemonConfig.InstallFlags(daemonFlags, presentInHelp)
	daemonConfig.InstallFlags(flag.CommandLine, absentFromHelp)
	daemonFlags.Require(flag.Exact, 0)

	return &DaemonCli{
		Config: daemonConfig,
		flags:  daemonFlags,
	}
}