Add session, frontend and command services.

app/channels.go

@@ -239,6 +239,8 @@ func NewChannels(services map[product.ServiceKey]any) (*Channels, error) {
 		app: &App{ch: ch},
 	}
 
+	services[product.CommandKey] = &App{ch: ch}
+
 	return ch, nil
 }
 

app/server.go

@@ -253,6 +253,8 @@ func NewServer(options ...Option) (*Server, error) {
 		product.KVStoreKey:       s.platform,
 		product.StoreKey:         store.NewStoreServiceAdapter(s.Store()),
 		product.SystemKey:        &systemServiceAdapter{server: s},
+		product.SessionKey:       app,
+		product.FrontendKey:      app,
 	}
 
 	// Step 4: Initialize products.

product/api.go

@@ -231,3 +231,25 @@ type BoardsService interface {
 	DeleteCard(cardID string, userID string) error
 	HasPermissionToBoard(userID, boardID string, permission *model.Permission) bool
 }
+
+// SessionService is the API for accessing the session.
+//
+// The service shall be registered via app.SessionKey service key.
+type SessionService interface {
+	GetSessionById(sessionID string) (*model.Session, *model.AppError)
+}
+
+// FrontendService is the API for interacting with front end.
+//
+// The service shall be registered via app.FrontendKey service key.
+type FrontendService interface {
+	OpenInteractiveDialog(dialog model.OpenDialogRequest) *model.AppError
+}
+
+// CommandService is the API for interacting with front end.
+//
+// The service shall be registered via app.CommandKey service key.
+type CommandService interface {
+	ExecuteCommand(c request.CTX, args *model.CommandArgs) (*model.CommandResponse, *model.AppError)
+	RegisterPluginCommand(pluginID string, command *model.Command) error
+}

product/service.go

@@ -26,4 +26,7 @@ const (
 	SystemKey        ServiceKey = "systemkey"
 	PreferencesKey   ServiceKey = "preferenceskey"
 	BoardsKey        ServiceKey = "boards"
+	SessionKey       ServiceKey = "sessionkey"
+	FrontendKey      ServiceKey = "frontendkey"
+	CommandKey       ServiceKey = "commandkey"
 )