1 files changed, 42 insertions, 0 deletions
diff --git a/internal/app/interfaces.go b/internal/app/interfaces.go
new file mode 100644
index 000000000..2f4287078
--- /dev/null
+++ b/internal/app/interfaces.go
@@ -0,0 +1,42 @@
+package app
+
+import (
+	"context"
+	"time"
+	
+	"github.com/sst/opencode/internal/message"
+	"github.com/sst/opencode/internal/pubsub"
+	"github.com/sst/opencode/internal/session"
+)
+
+// SessionService defines the interface for session operations
+type SessionService interface {
+	Create(ctx context.Context, title string) (session.Session, error)
+	Get(ctx context.Context, id string) (session.Session, error)
+	List(ctx context.Context) ([]session.Session, error)
+	Update(ctx context.Context, id, title string) error
+	Delete(ctx context.Context, id string) error
+}
+
+// MessageService defines the interface for message operations
+type MessageService interface {
+	pubsub.Subscriber[message.Message]
+	
+	GetBySession(ctx context.Context, sessionID string) ([]message.Message, error)
+	List(ctx context.Context, sessionID string) ([]message.Message, error)
+	Create(ctx context.Context, sessionID string, params message.CreateMessageParams) (message.Message, error)
+	Update(ctx context.Context, msg message.Message) (message.Message, error)
+	Delete(ctx context.Context, id string) error
+	DeleteSessionMessages(ctx context.Context, sessionID string) error
+	Get(ctx context.Context, id string) (message.Message, error)
+	ListAfter(ctx context.Context, sessionID string, timestamp time.Time) ([]message.Message, error)
+}
+
+// AgentService defines the interface for agent operations
+type AgentService interface {
+	Run(ctx context.Context, sessionID string, text string, attachments ...message.Attachment) (string, error)
+	Cancel(sessionID string) error
+	IsBusy() bool
+	IsSessionBusy(sessionID string) bool
+	CompactSession(ctx context.Context, sessionID string, force bool) error
+}
+\ No newline at end of file