feed

type Config struct {
	Dir           string
	Retention     time.Duration
	BlockDuration time.Duration
	EmbeddingLLM  string
	FlushInterval time.Duration
}

type Dependencies struct {
	BlockFactory    block.Factory
	LLMFactory      llm.Factory
	ChunkFactory    chunk.Factory
	PrimaryFactory  primary.Factory
	InvertedFactory inverted.Factory
	VectorFactory   vector.Factory
	Rewriter        rewrite.Rewriter
}

type Factory component.Factory[Storage, config.App, Dependencies]

type Storage interface {
	component.Component
	config.Watcher

	// Append stores some feeds.
	Append(ctx context.Context, feeds ...*model.Feed) error

	// Query retrieves feeds by query options.
	// Results are sorted by score (if vector query) and time.
	Query(ctx context.Context, query block.QueryOptions) ([]*block.FeedVO, error)

	// Exists checks if a feed exists in the storage.
	// If hintTime is zero, it only checks the head block.
	Exists(ctx context.Context, id uint64, hintTime time.Time) (bool, error)
}