const GroupName = "admissionregistration.k8s.io"

var (
	SchemeBuilder = runtime.NewSchemeBuilder(addKnownTypes)
	AddToScheme   = SchemeBuilder.AddToScheme
)

var SchemeGroupVersion = schema.GroupVersion{Group: GroupName, Version: runtime.APIVersionInternal}

type AdmissionHookClientConfig struct {
	// Service is a reference to the service for this webhook. If there is only
	// one port open for the service, that port will be used. If there are multiple
	// ports open, port 443 will be used if it is open, otherwise it is an error.
	// Required
	Service ServiceReference
	// CABundle is a PEM encoded CA bundle which will be used to validate webhook's server certificate.
	// Required
	CABundle []byte
}

type ExternalAdmissionHook struct {
	// The name of the external admission webhook.
	// Name should be fully qualified, e.g., imagepolicy.kubernetes.io, where
	// "imagepolicy" is the name of the webhook, and kubernetes.io is the name
	// of the organization.
	// Required.
	Name string

	// ClientConfig defines how to communicate with the hook.
	// Required
	ClientConfig AdmissionHookClientConfig

	// Rules describes what operations on what resources/subresources the webhook cares about.
	// The webhook cares about an operation if it matches _any_ Rule.
	Rules []RuleWithOperations

	// FailurePolicy defines how unrecognized errors from the admission endpoint are handled -
	// allowed values are Ignore or Fail. Defaults to Ignore.
	// +optional
	FailurePolicy *FailurePolicyType
}

type ExternalAdmissionHookConfiguration struct {
	metav1.TypeMeta
	// Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata.
	// +optional
	metav1.ObjectMeta
	// ExternalAdmissionHooks is a list of external admission webhooks and the
	// affected resources and operations.
	// +optional
	ExternalAdmissionHooks []ExternalAdmissionHook
}

type ExternalAdmissionHookConfigurationList struct {
	metav1.TypeMeta
	// Standard list metadata.
	// More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds
	// +optional
	metav1.ListMeta
	// List of ExternalAdmissionHookConfiguration.
	Items []ExternalAdmissionHookConfiguration
}

type FailurePolicyType string

const (
	// Ignore means the initilizer is removed from the initializers list of an
	// object if the initializer is timed out.
	Ignore FailurePolicyType = "Ignore"
	// For 1.7, only "Ignore" is allowed. "Fail" will be allowed when the
	// extensible admission feature is beta.
	Fail FailurePolicyType = "Fail"
)

type Initializer struct {
	// Name is the identifier of the initializer. It will be added to the
	// object that needs to be initialized.
	// Name should be fully qualified, e.g., alwayspullimages.kubernetes.io, where
	// "alwayspullimages" is the name of the webhook, and kubernetes.io is the name
	// of the organization.
	// Required
	Name string

	// Rules describes what resources/subresources the initializer cares about.
	// The initializer cares about an operation if it matches _any_ Rule.
	// Rule.Resources must not include subresources.
	Rules []Rule

	// FailurePolicy defines what happens if the responsible initializer controller
	// fails to takes action. Allowed values are Ignore, or Fail. If "Ignore" is
	// set, initializer is removed from the initializers list of an object if
	// the timeout is reached; If "Fail" is set, admissionregistration returns timeout error
	// if the timeout is reached.
	FailurePolicy *FailurePolicyType
}

type InitializerConfiguration struct {
	metav1.TypeMeta
	// Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata.
	// +optional
	metav1.ObjectMeta

	// Initializers is a list of resources and their default initializers
	// Order-sensitive.
	// When merging multiple InitializerConfigurations, we sort the initializers
	// from different InitializerConfigurations by the name of the
	// InitializerConfigurations; the order of the initializers from the same
	// InitializerConfiguration is preserved.
	// +optional
	Initializers []Initializer
}

type InitializerConfigurationList struct {
	metav1.TypeMeta
	// Standard list metadata.
	// More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds
	// +optional
	metav1.ListMeta

	// List of InitializerConfiguration.
	Items []InitializerConfiguration
}

type OperationType string

const (
	OperationAll OperationType = "*"
	Create       OperationType = "CREATE"
	Update       OperationType = "UPDATE"
	Delete       OperationType = "DELETE"
	Connect      OperationType = "CONNECT"
)

type Rule struct {
	// APIGroups is the API groups the resources belong to. '*' is all groups.
	// If '*' is present, the length of the slice must be one.
	// Required.
	APIGroups []string

	// APIVersions is the API versions the resources belong to. '*' is all versions.
	// If '*' is present, the length of the slice must be one.
	// Required.
	APIVersions []string

	// Resources is a list of resources this rule applies to.
	//
	// For example:
	// 'pods' means pods.
	// 'pods/log' means the log subresource of pods.
	// '*' means all resources, but not subresources.
	// 'pods/*' means all subresources of pods.
	// '*/scale' means all scale subresources.
	// '*/*' means all resources and their subresources.
	//
	// If wildcard is present, the validation rule will ensure resources do not
	// overlap with each other.
	//
	// Depending on the enclosing object, subresources might not be allowed.
	// Required.
	Resources []string
}

type RuleWithOperations struct {
	// Operations is the operations the admission hook cares about - CREATE, UPDATE, or *
	// for all operations.
	// If '*' is present, the length of the slice must be one.
	// Required.
	Operations []OperationType
	// Rule is embedded, it describes other criteria of the rule, like
	// APIGroups, APIVersions, Resources, etc.
	Rule
}

type ServiceReference struct {
	// Namespace is the namespace of the service
	// Required
	Namespace string
	// Name is the name of the service
	// Required
	Name string
}