package clientauth

import (
	"context"
)

// NamespaceProvider is a strategy for determining the namespace to use in token exchange requests.
type NamespaceProvider interface {
	GetNamespace(ctx context.Context) string
}

// AudienceProvider is a strategy for determining the audiences to use in token exchange requests.
type AudienceProvider interface {
	GetAudiences(ctx context.Context) []string
}

// StaticNamespaceProvider returns a fixed namespace for all requests.
type StaticNamespaceProvider struct {
	namespace string
}

// NewStaticNamespaceProvider creates a namespace provider that always returns the same namespace.
func NewStaticNamespaceProvider(namespace string) *StaticNamespaceProvider {
	return &StaticNamespaceProvider{namespace: namespace}
}

func (p *StaticNamespaceProvider) GetNamespace(ctx context.Context) string {
	return p.namespace
}

// StaticAudienceProvider returns a fixed set of audiences for all requests.
type StaticAudienceProvider struct {
	audiences []string
}

// NewStaticAudienceProvider creates an audience provider that always returns the same audiences.
func NewStaticAudienceProvider(audiences ...string) *StaticAudienceProvider {
	return &StaticAudienceProvider{audiences: audiences}
}

func (p *StaticAudienceProvider) GetAudiences(ctx context.Context) []string {
	return p.audiences
}