package database import "context" type SeqUser interface { GetUserMaxSeq(ctx context.Context, conversationID string, userID string) (int64, error) SetUserMaxSeq(ctx context.Context, conversationID string, userID string, seq int64) error GetUserMinSeq(ctx context.Context, conversationID string, userID string) (int64, error) SetUserMinSeq(ctx context.Context, conversationID string, userID string, seq int64) error GetUserReadSeq(ctx context.Context, conversationID string, userID string) (int64, error) SetUserReadSeq(ctx context.Context, conversationID string, userID string, seq int64) error GetUserReadSeqs(ctx context.Context, userID string, conversationID []string) (map[string]int64, error) }