design.puml

@startuml
skinparam componentStyle uml2

package "Client" as client {
    component "TTRPC Client" as ttrpc_client
}

package "Service" as service {
    component "TTRPC Server" as ttrpc_server
    component "Model Manager" as model_manager {
        component "Offline Models" as offline_models
        component "Online Models" as online_models
    }
    component "Speech - to - Text Model" as stt_model
    component "Dialogue Model" as dialogue_model
    component "Text - to - Speech Model" as tts_model
}

ttrpc_client --> ttrpc_server : TTRPC requests
ttrpc_server --> model_manager : Select model (offline/online)
model_manager --> stt_model : Pass speech data (if speech - to - text)
model_manager --> dialogue_model : Pass text data (if dialogue)
model_manager --> tts_model : Pass text data (if text - to - speech)
stt_model --> dialogue_model : Transcribed text
dialogue_model --> tts_model : Generated response text
tts_model --> ttrpc_server : Generated speech data
ttrpc_server --> ttrpc_client : TTRPC responses
@enduml