// defines different connection states
export enum ConnectionState {
    connecting = 'connecting',
    connected = 'connected',
    disconnected = 'disconnected',
}

// defines message types
export enum MessageType {
    assign_id = 'assign_id',
    send_hl7v2 = 'send_hl7v2',
    receive_hl7v2 = 'receive_hl7v2',
    delivery_success = 'delivery_success',
    delivery_error = 'delivery_error',
}

// defines body of message types
export type Message =
    | { type: MessageType.assign_id, payload: { stationId: string }}
    | { type: MessageType.send_hl7v2, payload: { message: string }}
    | { type: MessageType.receive_hl7v2, payload: { message: string, timestamp: string }}
    | { type: MessageType.delivery_success, payload: { message: string, timestamp: string }}
    | { type: MessageType.delivery_error, payload: { error: string }}

// required to define list of this message type
export type ReceiveHl7v2Message = Extract<Message, { type: MessageType.receive_hl7v2 }>;
export type DeliverySuccessMessage = Extract<Message, { type: MessageType.delivery_success }>;