type SolrUpdateStrategy struct {
	// Method defines the way in which SolrClouds should be updated when the podSpec changes.
	// +optional
	Method SolrUpdateMethod `json:"method,omitempty"`

	// Options for Solr Operator Managed rolling updates.
	// +optional
	ManagedUpdateOptions ManagedUpdateOptions `json:"managed,omitempty"`
}

// SolrUpdateMethod is a string enumeration type that enumerates
// all possible ways that a SolrCloud can having rolling updates managed.
// +kubebuilder:validation:Enum=Managed;StatefulSet;Manual
type SolrUpdateMethod string

const (
	// Let the Solr Operator manage rolling updates to keep collections/shards available while updating pods in parallel.
	// This is the default option.
	ManagedUpdate SolrUpdateMethod = "Managed"

	// Use the default StatefulSet rolling updates logic. One pod at a time, starting with the highest ordinal.
	StatefulSetUpdate SolrUpdateMethod = "StatefulSet"

	// The Solr Operator and Kubernetes will not delete pods for updates. The user will be responsible for this.
	ManualUpdate SolrUpdateMethod = "Manual"
)

func (opts *SolrUpdateStrategy) withDefaults() (changed bool) {
	// You can't use an externalAddress for Solr Nodes if the Nodes are hidden externally
	if opts.Method == "" {
		changed = true
		opts.Method = ManagedUpdate
	}

	return changed
}

// Spec to control the desired behavior of managed rolling update.
type ManagedUpdateOptions struct {

	// The maximum number of pods that can be unavailable during the update.
	// Value can be an absolute number (ex: 5) or a percentage of the desired number of pods (ex: 10%).
	// Absolute number is calculated from percentage by rounding down.
	// If the provided number is 0 or negative, then all pods will be allowed to be updated in unison.
	//
	// Defaults to 25%.
	//
	// +optional
	MaxPodsUnavailable *intstr.IntOrString `json:"maxPodsUnavailable,omitempty"`

	// The maximum number of replicas for each shard that can be unavailable during the update.
	// Value can be an absolute number (ex: 5) or a percentage of replicas in a shard (ex: 25%).
	// Absolute number is calculated from percentage by rounding down.
	// If the provided number is 0 or negative, then all replicas will be allowed to be updated in unison.
	//
	// Defaults to 1.
	//
	// +optional
	MaxShardReplicasUnavailable *intstr.IntOrString `json:"maxShardReplicasUnavailable,omitempty"`
}