package lspool

import "time"

// Backend is the control-plane abstraction used by the HTTP upstream wrapper.
// It may be backed by a local in-process Pool or by remote LS workers.
type Backend interface {
	GetOrCreate(accountID, routingKey string, proxyURL ...string) (*Instance, error)
	SetAccountToken(accountID, accessToken, refreshToken string, expiresAt time.Time)
	SetAccountModelCredits(accountID string, useAICredits bool, availableCredits, minimumCreditAmountForUsage *int32)
	Stats() map[string]any
	Close()
}