func (v *VolumeOptions) addVolumeToSpec(spec *kapi.PodSpec) error {
	opts := v.AddOpts
	newVolume := &kapi.Volume{
		Name: v.Name,
	}
	setSource := true
	for i, vol := range spec.Volumes {
		if v.Name == vol.Name {
			if !opts.Overwrite {
				return fmt.Errorf("Volume '%s' already exists. Use --overwrite to replace", v.Name)
			}
			if !opts.TypeChanged && len(opts.Source) == 0 {
				newVolume.VolumeSource = vol.VolumeSource
				setSource = false
			}
			spec.Volumes = append(spec.Volumes[:i], spec.Volumes[i+1:]...)
			break
		}
	}

	if setSource {
		err := v.setVolumeSource(newVolume)
		if err != nil {
			return err
		}
	}
	spec.Volumes = append(spec.Volumes, *newVolume)

	if len(opts.MountPath) > 0 {
		v.setVolumeMount(spec)
	}
	return nil
}

func podSpec(containerImages ...string) kapi.PodSpec {
	spec := kapi.PodSpec{
		Containers: []kapi.Container{},
	}
	for _, image := range containerImages {
		container := kapi.Container{
			Image: image,
		}
		spec.Containers = append(spec.Containers, container)
	}
	return spec
}

func (v *VolumeOptions) removeVolumeFromSpec(spec *kapi.PodSpec) error {
	containers, skippedContainers := selectContainers(spec.Containers, v.Containers)
	if len(v.Name) == 0 {
		for _, c := range containers {
			c.VolumeMounts = []kapi.VolumeMount{}
		}
		spec.Volumes = []kapi.Volume{}
	} else {
		for _, c := range containers {
			for i, m := range c.VolumeMounts {
				if v.Name == m.Name {
					c.VolumeMounts = append(c.VolumeMounts[:i], c.VolumeMounts[i+1:]...)
					break
				}
			}
		}

		// Remove volume if no container is using it
		found := false
		for _, c := range skippedContainers {
			for _, m := range c.VolumeMounts {
				if v.Name == m.Name {
					found = true
					break
				}
			}
			if found {
				break
			}
		}
		if !found {
			for i, vol := range spec.Volumes {
				if v.Name == vol.Name {
					spec.Volumes = append(spec.Volumes[:i], spec.Volumes[i+1:]...)
					break
				}
			}
		}
	}
	return nil
}

func (v *VolumeOptions) removeVolumeFromSpec(spec *kapi.PodSpec, info *resource.Info) error {
	containers, skippedContainers := selectContainers(spec.Containers, v.Containers)
	if len(containers) == 0 && v.Containers != "*" {
		fmt.Fprintf(v.Writer, "warning: %s/%s does not have any containers matching %q\n", info.Mapping.Resource, info.Name, v.Containers)
		return nil
	}

	if len(v.Name) == 0 {
		for _, c := range containers {
			c.VolumeMounts = []kapi.VolumeMount{}
		}
		spec.Volumes = []kapi.Volume{}
	} else {
		err := v.removeSpecificVolume(spec, containers, skippedContainers)
		if err != nil {
			return err
		}
	}
	return nil
}

func (v *VolumeOptions) removeSpecificVolume(spec *kapi.PodSpec, containers, skippedContainers []*kapi.Container) error {
	for _, c := range containers {
		for i, m := range c.VolumeMounts {
			if v.Name == m.Name {
				c.VolumeMounts = append(c.VolumeMounts[:i], c.VolumeMounts[i+1:]...)
				break
			}
		}
	}

	// Remove volume if no container is using it
	found := false
	for _, c := range skippedContainers {
		for _, m := range c.VolumeMounts {
			if v.Name == m.Name {
				found = true
				break
			}
		}
		if found {
			break
		}
	}
	if !found {
		foundVolume := false
		for i, vol := range spec.Volumes {
			if v.Name == vol.Name {
				spec.Volumes = append(spec.Volumes[:i], spec.Volumes[i+1:]...)
				foundVolume = true
				break
			}
		}
		if !foundVolume {
			return fmt.Errorf("volume '%s' not found", v.Name)
		}
	}
	return nil
}

// DeploymentConfig creates a deploymentConfig resource from the deployment configuration reference
//
// TODO: take a pod template spec as argument
func (r *DeploymentConfigRef) DeploymentConfig() (*deployapi.DeploymentConfig, error) {
	if len(r.Name) == 0 {
		suggestions := NameSuggestions{}
		for i := range r.Images {
			suggestions = append(suggestions, r.Images[i])
		}
		name, ok := suggestions.SuggestName()
		if !ok {
			return nil, fmt.Errorf("unable to suggest a name for this DeploymentConfig")
		}
		r.Name = name
	}

	selector := map[string]string{
		"deploymentconfig": r.Name,
	}

	triggers := []deployapi.DeploymentTriggerPolicy{
		// By default, always deploy on change
		{
			Type: deployapi.DeploymentTriggerOnConfigChange,
		},
	}

	template := kapi.PodSpec{}
	for i := range r.Images {
		c, containerTriggers, err := r.Images[i].DeployableContainer()
		if err != nil {
			return nil, err
		}
		triggers = append(triggers, containerTriggers...)
		template.Containers = append(template.Containers, *c)
	}

	// Create EmptyDir volumes for all container volume mounts
	for _, c := range template.Containers {
		for _, v := range c.VolumeMounts {
			template.Volumes = append(template.Volumes, kapi.Volume{
				Name: v.Name,
				VolumeSource: kapi.VolumeSource{
					EmptyDir: &kapi.EmptyDirVolumeSource{Medium: kapi.StorageMediumDefault},
				},
			})
		}
	}

	for i := range template.Containers {
		template.Containers[i].Env = append(template.Containers[i].Env, r.Env.List()...)
	}

	return &deployapi.DeploymentConfig{
		ObjectMeta: kapi.ObjectMeta{
			Name: r.Name,
		},
		Template: deployapi.DeploymentTemplate{
			ControllerTemplate: kapi.ReplicationControllerSpec{
				Replicas: 1,
				Selector: selector,
				Template: &kapi.PodTemplateSpec{
					ObjectMeta: kapi.ObjectMeta{
						Labels: selector,
					},
					Spec: template,
				},
			},
		},
		Triggers: triggers,
	}, nil
}

func convert_v1_PodSpec_To_api_PodSpec(in *PodSpec, out *api.PodSpec, s conversion.Scope) error {
	if defaulting, found := s.DefaultingInterface(reflect.TypeOf(*in)); found {
		defaulting.(func(*PodSpec))(in)
	}
	if in.Volumes != nil {
		out.Volumes = make([]api.Volume, len(in.Volumes))
		for i := range in.Volumes {
			if err := convert_v1_Volume_To_api_Volume(&in.Volumes[i], &out.Volumes[i], s); err != nil {
				return err
			}
		}
	} else {
		out.Volumes = nil
	}
	if in.Containers != nil {
		out.Containers = make([]api.Container, len(in.Containers))
		for i := range in.Containers {
			if err := convert_v1_Container_To_api_Container(&in.Containers[i], &out.Containers[i], s); err != nil {
				return err
			}
		}
	} else {
		out.Containers = nil
	}
	out.RestartPolicy = api.RestartPolicy(in.RestartPolicy)
	if in.TerminationGracePeriodSeconds != nil {
		out.TerminationGracePeriodSeconds = new(int64)
		*out.TerminationGracePeriodSeconds = *in.TerminationGracePeriodSeconds
	} else {
		out.TerminationGracePeriodSeconds = nil
	}
	if in.ActiveDeadlineSeconds != nil {
		out.ActiveDeadlineSeconds = new(int64)
		*out.ActiveDeadlineSeconds = *in.ActiveDeadlineSeconds
	} else {
		out.ActiveDeadlineSeconds = nil
	}
	out.DNSPolicy = api.DNSPolicy(in.DNSPolicy)
	if in.NodeSelector != nil {
		out.NodeSelector = make(map[string]string)
		for key, val := range in.NodeSelector {
			out.NodeSelector[key] = val
		}
	} else {
		out.NodeSelector = nil
	}
	// We support DeprecatedServiceAccount as an alias for ServiceAccountName.
	// If both are specified, ServiceAccountName (the new field) wins.
	out.ServiceAccountName = in.ServiceAccountName
	if in.ServiceAccountName == "" {
		out.ServiceAccountName = in.DeprecatedServiceAccount
	}
	out.NodeName = in.NodeName

	// carry conversion
	if in.NodeName == "" {
		out.NodeName = in.DeprecatedHost
	}

	out.HostNetwork = in.HostNetwork
	if in.ImagePullSecrets != nil {
		out.ImagePullSecrets = make([]api.LocalObjectReference, len(in.ImagePullSecrets))
		for i := range in.ImagePullSecrets {
			if err := convert_v1_LocalObjectReference_To_api_LocalObjectReference(&in.ImagePullSecrets[i], &out.ImagePullSecrets[i], s); err != nil {
				return err
			}
		}
	} else {
		out.ImagePullSecrets = nil
	}
	return nil
}

// DeploymentConfig creates a deploymentConfig resource from the deployment configuration reference
//
// TODO: take a pod template spec as argument
func (r *DeploymentConfigRef) DeploymentConfig() (*deployapi.DeploymentConfig, error) {
	if len(r.Name) == 0 {
		suggestions := NameSuggestions{}
		for i := range r.Images {
			suggestions = append(suggestions, r.Images[i])
		}
		name, ok := suggestions.SuggestName()
		if !ok {
			return nil, fmt.Errorf("unable to suggest a name for this DeploymentConfig")
		}
		r.Name = name
	}

	selector := map[string]string{
		"deploymentconfig": r.Name,
	}

	triggers := []deployapi.DeploymentTriggerPolicy{
		// By default, always deploy on change
		{
			Type: deployapi.DeploymentTriggerOnConfigChange,
		},
	}

	template := kapi.PodSpec{}
	for i := range r.Images {
		c, containerTriggers, err := r.Images[i].DeployableContainer()
		if err != nil {
			return nil, err
		}
		triggers = append(triggers, containerTriggers...)
		template.Containers = append(template.Containers, *c)
	}
	// TODO: populate volumes

	for i := range template.Containers {
		template.Containers[i].Env = append(template.Containers[i].Env, r.Env.List()...)
	}

	return &deployapi.DeploymentConfig{
		ObjectMeta: kapi.ObjectMeta{
			Name: r.Name,
		},
		Template: deployapi.DeploymentTemplate{
			Strategy: deployapi.DeploymentStrategy{
				Type: deployapi.DeploymentStrategyTypeRecreate,
			},
			ControllerTemplate: kapi.ReplicationControllerSpec{
				Replicas: 1,
				Selector: selector,
				Template: &kapi.PodTemplateSpec{
					ObjectMeta: kapi.ObjectMeta{
						Labels: selector,
					},
					Spec: template,
				},
			},
		},
		Triggers: triggers,
	}, nil
}