syntax = "proto3";

package meshtastic;

option csharp_namespace = "Meshtastic.Protobufs";
option go_package = "github.com/meshtastic/go/generated";
option java_outer_classname = "StoreAndForwardProtos";
option java_package = "com.geeksville.mesh";
option swift_prefix = "";

/*
 * TODO: REPLACE
 */
message StoreAndForward {
  /*
   * 001 - 063 = From Router
   * 064 - 127 = From Client
   */
  enum RequestResponse {
    /*
     * Unset/unused
     */
    UNSET = 0;

    /*
     * Router is an in error state.
     */
    ROUTER_ERROR = 1;

    /*
     * Router heartbeat
     */
    ROUTER_HEARTBEAT = 2;

    /*
     * Router has requested the client respond. This can work as a
     * "are you there" message.
     */
    ROUTER_PING = 3;

    /*
     * The response to a "Ping"
     */
    ROUTER_PONG = 4;

    /*
     * Router is currently busy. Please try again later.
     */
    ROUTER_BUSY = 5;

    /*
     * Router is responding to a request for history.
     */
    ROUTER_HISTORY = 6;

    /*
     * Router is responding to a request for stats.
     */
    ROUTER_STATS = 7;

    /*
     * Router sends a text message from its history that was a direct message.
     */
    ROUTER_TEXT_DIRECT = 8;

    /*
     * Router sends a text message from its history that was a broadcast.
     */
    ROUTER_TEXT_BROADCAST = 9;

    /*
     * Client is an in error state.
     */
    CLIENT_ERROR = 64;

    /*
     * Client has requested a replay from the router.
     */
    CLIENT_HISTORY = 65;

    /*
     * Client has requested stats from the router.
     */
    CLIENT_STATS = 66;

    /*
     * Client has requested the router respond. This can work as a
     * "are you there" message.
     */
    CLIENT_PING = 67;

    /*
     * The response to a "Ping"
     */
    CLIENT_PONG = 68;

    /*
     * Client has requested that the router abort processing the client's request
     */
    CLIENT_ABORT = 106;
  }

  /*
   * TODO: REPLACE
   */
  message Statistics {
    /*
     * Number of messages we have ever seen
     */
    uint32 messages_total = 1;

    /*
     * Number of messages we have currently saved our history.
     */
    uint32 messages_saved = 2;

    /*
     * Maximum number of messages we will save
     */
    uint32 messages_max = 3;

    /*
     * Router uptime in seconds
     */
    uint32 up_time = 4;

    /*
     * Number of times any client sent a request to the S&F.
     */
    uint32 requests = 5;

    /*
     * Number of times the history was requested.
     */
    uint32 requests_history = 6;

    /*
     * Is the heartbeat enabled on the server?
     */
    bool heartbeat = 7;

    /*
     * Maximum number of messages the server will return.
     */
    uint32 return_max = 8;

    /*
     * Maximum history window in minutes the server will return messages from.
     */
    uint32 return_window = 9;
  }

  /*
   * TODO: REPLACE
   */
  message History {
    /*
     * Number of that will be sent to the client
     */
    uint32 history_messages = 1;

    /*
     * The window of messages that was used to filter the history client requested
     */
    uint32 window = 2;

    /*
     * Index in the packet history of the last message sent in a previous request to the server.
     * Will be sent to the client before sending the history and can be set in a subsequent request to avoid getting packets the server already sent to the client.
     */
    uint32 last_request = 3;
  }

  /*
   * TODO: REPLACE
   */
  message Heartbeat {
    /*
     * Period in seconds that the heartbeat is sent out that will be sent to the client
     */
    uint32 period = 1;

    /*
     * If set, this is not the primary Store & Forward router on the mesh
     */
    uint32 secondary = 2;
  }

  /*
   * TODO: REPLACE
   */
  RequestResponse rr = 1;

  /*
   * TODO: REPLACE
   */
  oneof variant {
    /*
     * TODO: REPLACE
     */
    Statistics stats = 2;

    /*
     * TODO: REPLACE
     */
    History history = 3;

    /*
     * TODO: REPLACE
     */
    Heartbeat heartbeat = 4;

    /*
     * Text from history message.
     */
    bytes text = 5;
  }
}