// ModelConfig returns the current environment's configuration.
func (e *ModelWatcher) ModelConfig() (params.ModelConfigResult, error) {
	result := params.ModelConfigResult{}

	config, err := e.st.ModelConfig()
	if err != nil {
		return result, err
	}
	allAttrs := config.AllAttrs()

	if !e.authorizer.AuthModelManager() {
		// Mask out any secrets in the environment configuration
		// with values of the same type, so it'll pass validation.
		//
		// TODO(dimitern) 201309-26 bug #1231384
		// Delete the code below and mark the bug as fixed,
		// once it's live tested on MAAS and 1.16 compatibility
		// is dropped.
		provider, err := environs.Provider(config.Type())
		if err != nil {
			return result, err
		}
		secretAttrs, err := provider.SecretAttrs(config)
		for k := range secretAttrs {
			allAttrs[k] = "not available"
		}
	}
	result.Config = allAttrs
	return result, nil
}

// ModelConfig returns the model's configuration.
func (u *UndertakerAPI) ModelConfig() (params.ModelConfigResult, error) {
	result := params.ModelConfigResult{}

	config, err := u.st.ModelConfig()
	if err != nil {
		return result, err
	}
	allAttrs := config.AllAttrs()
	result.Config = allAttrs
	return result, nil
}

// ModelConfig returns the current model's configuration.
func (api *DiscoverSpacesAPI) ModelConfig() (params.ModelConfigResult, error) {
	result := params.ModelConfigResult{}

	config, err := api.st.ModelConfig()
	if err != nil {
		return result, err
	}
	allAttrs := config.AllAttrs()
	// No need to obscure any secrets as caller needs to be a ModelManager to
	// call any api methods.
	result.Config = allAttrs
	return result, nil
}

// ConfigSkeleton returns config values to be used as a starting point for the
// API caller to construct a valid model specific config.  The provider
// and region params are there for future use, and current behaviour expects
// both of these to be empty.
func (mm *ModelManagerAPI) ConfigSkeleton(args params.ModelSkeletonConfigArgs) (params.ModelConfigResult, error) {
	var result params.ModelConfigResult
	if args.Region != "" {
		return result, errors.NotValidf("region value %q", args.Region)
	}

	controllerEnv, err := mm.state.ControllerModel()
	if err != nil {
		return result, errors.Trace(err)
	}
	config, err := mm.configSkeleton(controllerEnv, args.Provider)
	if err != nil {
		return result, errors.Trace(err)
	}

	result.Config = config
	return result, nil
}