package skillpack

import "context"

// Store is the persistence seam for subscriptions (metadata + the current pin).
// It is deliberately small; a host backs it with its DB, Memory is the zero-dep
// default, and contrib/store can add durable SQLite alongside the other
// executus store impls.
type Store interface {
	Initialize(ctx context.Context) error
	Save(ctx context.Context, s *Subscription) error
	Get(ctx context.Context, id string) (*Subscription, error)
	GetByName(ctx context.Context, name string) (*Subscription, error)
	List(ctx context.Context) ([]Subscription, error)
	Delete(ctx context.Context, id string) error
}

// PackCache is the content-addressed store of pinned pack trees, keyed by
// content digest. It exists so activating an agent never re-fetches from the
// Source (no clone per run) and so a pinned digest's exact bytes survive even if
// upstream later force-pushes or disappears. A host may back it with disk;
// Memory is the default. Because the key IS the content digest, entries are
// immutable and safe to share across subscriptions that pin the same bytes.
type PackCache interface {
	Put(ctx context.Context, digest string, t Tree) error
	Get(ctx context.Context, digest string) (Tree, error)
}