syntax = "proto3";

package internal;

import "common/common.proto";
import "gw/gw.proto";
import "google/protobuf/timestamp.proto";

message DeviceSession {
  // Device EUI.
  bytes dev_eui = 1;

  // Device address.
  bytes dev_addr = 2;

  // Join EUI.
  bytes join_eui = 3;

  // LoRaWAN mac-version.
  common.MacVersion mac_version = 4;

  // FNwkSIntKey.
  bytes f_nwk_s_int_key = 5;

  // SNwkSIntKey.
  bytes s_nwk_s_int_key = 6;

  // NwkSEncKey.
  bytes nwk_s_enc_key = 7;

  // AppSKey envelope.
  common.KeyEnvelope app_s_key = 8;

  // Uplink frame-counter.
  uint32 f_cnt_up = 9;

  // Downlink frame-counter (ns).
  uint32 n_f_cnt_down = 10;

  // Downlink frame-counter (as).
  uint32 a_f_cnt_down = 11;

  // Frame-counter holding the last confirmed downlink frame (n_f_cnt_down or
  // a_f_cnt_down).
  uint32 conf_f_cnt = 12;

  // Skip uplink frame-counter validation.
  bool skip_f_cnt_check = 13;

  // RX1 delay.
  uint32 rx1_delay = 14;

  // RX1 data-rate offset.
  uint32 rx1_dr_offset = 15;

  // RX2 data-rate.
  uint32 rx2_dr = 16;

  // RX2 frequency.
  uint32 rx2_frequency = 17;

  // Enabled uplink channels.
  repeated uint32 enabled_uplink_channel_indices = 18;

  // Extra user-defined uplink channels.
  map<uint32, DeviceSessionChannel> extra_uplink_channels = 19;

  // Class-B ping-slot data-rate.
  uint32 class_b_ping_slot_dr = 20;

  // Class-B ping-slot frequency.
  uint32 class_b_ping_slot_freq = 21;

  // Class-B ping-slot nb.
  uint32 class_b_ping_slot_nb = 22;

  // Nb. transmissions.
  uint32 nb_trans = 23;

  // TXPowerIndex which the node is using. The possible values are defined
  // by the lorawan/band package and are region specific. By default it is
  // assumed that the node is using TXPower 0. This value is controlled by
  // the ADR engine.
  uint32 tx_power_index = 24;

  // DR defines the (last known) data-rate at which the node is operating.
  // This value is controlled by the ADR engine.
  uint32 dr = 25;

  // ADR defines if the device has ADR enabled.
  bool adr = 26;

  // MaxSupportedTXPowerIndex defines the maximum supported tx-power index
  // by the node, or 0 when not set.
  uint32 max_supported_tx_power_index = 27;

  // MinSupportedTXPowerIndex defines the minimum supported tx-power index
  // by the node (default 0).
  uint32 min_supported_tx_power_index = 28;

  // Pending rejoin device-session contains a device-session which has not
  // yet been activated by the device (by sending a first uplink).
  DeviceSession pending_rejoin_device_session = 29;

  // Uplink history for ADR (last 20 uplink transmissions).
  repeated UplinkAdrHistory uplink_adr_history = 30;

  // Mac-command error count.
  map<uint32, uint32> mac_command_error_count = 31;

  // Last device-status request.
  google.protobuf.Timestamp last_device_status_request = 32;

  // RejoinRequestEnabled defines if the rejoin-request is enabled on the
  // device.
  bool rejoin_request_enabled = 33;

  // RejoinRequestMaxCountN defines the 2^(C+4) uplink message interval for
  // the rejoin-request.
  uint32 rejoin_request_max_count_n = 34;

  // RejoinRequestMaxTimeN defines the 2^(T+10) time interval (seconds)
  // for the rejoin-request.
  uint32 rejoin_request_max_time_n = 35;

  // Rejoin counter (RJCount0).
  // This counter is reset to 0 after each successful join-accept.
  uint32 rejoin_count_0 = 36;

  // Uplink dwell time.
  bool uplink_dwell_time_400ms = 37;

  // Downlink dwell time.
  bool downlink_dwell_time_400ms = 38;

  // Uplink max. EIRP index.
  uint32 uplink_max_eirp_index = 39;

  // Region configuration ID.
  string region_config_id = 40;

  // Relay state.
  Relay relay = 41;
}

message UplinkAdrHistory {
  // Uplink frame-counter.
  uint32 f_cnt = 1;

  // Max SNR (of deduplicated frames received by one or multiple gateways).
  float max_snr = 2;

  // Max RSSI.
  int32 max_rssi = 5;

  // TX Power (as known by the network-server).
  uint32 tx_power_index = 3;

  // Number of receiving gateways.
  uint32 gateway_count = 4;
}

message Relay {
  // Devices provisioned on the relay.
  repeated RelayDevice devices = 1;

  // Filter list.
  repeated RelayFilter filters = 2;

  // Relay is enabled.
  bool enabled = 3;

  // CAD periodicity.
  uint32 cad_periodicity = 4;

  // Default channel index.
  uint32 default_channel_index = 5;

  // Second channel freq.
  uint32 second_channel_freq = 6;

  // Second channel DR.
  uint32 second_channel_dr = 7;

  // Second channel ACK offset.
  uint32 second_channel_ack_offset = 8;

  // End-device activation mode.
  uint32 ed_activation_mode = 9;

  // End-device smart-enable level.
  uint32 ed_smart_enable_level = 10;

  // End-device back-off.
  uint32 ed_back_off = 11;

  // Join-request limit reload rate.
  uint32 join_req_limit_reload_rate = 12;

  // Notify limit reload rate.
  uint32 notify_limit_reload_rate = 13;

  // Global uplink limit reload rate.
  uint32 global_uplink_limit_reload_rate = 14;

  // Overall limit reload rate.
  uint32 overall_limit_reload_rate = 15;

  // Join-request limit bucket size.
  uint32 join_req_limit_bucket_size = 16;

  // Notify limit bucket size.
  uint32 notify_limit_bucket_size = 17;

  // Global uplink limit bucket size.
  uint32 global_uplink_limit_bucket_size = 18;

  // Overall limit bucket size.
  uint32 overall_limit_bucket_size = 19;

  // End-device must communicate through relay only.
  // This is stored in the device-session as we need to validate on retrieving
  // the device-session.
  bool ed_relay_only = 20;

  // End-device WFCnt.
  // This holds the last known WFCnt value. ChirpStack will periodically read
  // this value from the Relay.
  uint32 w_f_cnt = 21;
}

message RelayDevice {
  // Index (used for filter and uplink filters).
  // This must be between 0 - 15.
  uint32 index = 1;

  // JoinEUI (EUI64).
  bytes join_eui = 2;

  // DevEUI (EUI64).
  bytes dev_eui = 3;

  // DevAddr.
  bytes dev_addr = 4;

  // RootWorSKey.
  bytes root_wor_s_key = 5;

  // Provisioned.
  bool provisioned = 6;

  // Uplink limit bucket size.
  uint32 uplink_limit_bucket_size = 7;

  // Uplink limit reload rate.
  uint32 uplink_limit_reload_rate = 8;

  // Timestamp of the last WFCnt request.
  // Note that ChirpStack periodically requests the WFCnt from the relay.
  google.protobuf.Timestamp w_f_cnt_last_request = 9;
}

message RelayFilter {
  // Index.
  // This must be between 0 - 15.
  uint32 index = 1;

  // Action.
  //  * 0: No Rule
  //  * 1: Forward
  //  * 2: Filter
  uint32 action = 2;

  // DevEUI (EUI64).
  bytes dev_eui = 3;

  // JoinEUI (EUI64).
  bytes join_eui = 4;

  // Provisioned.
  bool provisioned = 5;
}

message DeviceSessionChannel {
  // Frequency Hz.
  uint32 frequency = 1;

  // Min. data-rate.
  uint32 min_dr = 2;

  // Max. data-rate.
  uint32 max_dr = 3;
}

message DeviceGatewayRxInfo {
  // DevEUI (EUI64).
  bytes dev_eui = 1;

  // Data-rate.
  uint32 dr = 2;

  // Gateway RxInfo elements.
  repeated DeviceGatewayRxInfoItem items = 3;
}

message DeviceGatewayRxInfoItem {
  // Gateway ID (EUI64).
  bytes gateway_id = 1;

  // RSSI.
  int32 rssi = 2;

  // LoRa SNR.
  float lora_snr = 3;

  // Antenna.
  uint32 antenna = 4;

  // Board.
  uint32 board = 5;

  // Context blob.
  bytes context = 6;

  // Gateway is private (uplink).
  bool is_private_up = 7;

  // Gateway is private (downlink).
  bool is_private_down = 8;

  // Tenant ID (UUID).
  bytes tenant_id = 9;
}

message DownlinkFrame {
  // Downlink ID.
  uint32 downlink_id = 1;

  // DevEUI.
  bytes dev_eui = 2;

  // Device queue item ID.
  bytes device_queue_item_id = 3;

  // Multicast Group ID.
  bytes multicast_group_id = 4;

  // Multicast queue item ID.
  bytes multicast_group_queue_item_id = 5;

  // Downlink frames.
  gw.DownlinkFrame downlink_frame = 6;

  // Encrypted FOpts (LoRaWAN 1.1).
  bool encrypted_fopts = 8;

  // Network session encryption key (for FOpts and FRMPayload mac-commands).
  bytes nwk_s_enc_key = 9;

  // NFCntDown (for decrypting mac-commands).
  uint32 n_f_cnt_down = 10;

  // AFCntDown (for decrypting FRMPayload in case of Relay).
  uint32 a_f_cnt_down = 11;

  // DevEUI of relayed device.
  bytes dev_eui_relayed = 12;
}

message LoraCloudGeolocBuffer {
  // Uplinks in buffer.
  repeated LoraCloudGeolocBufferUplink uplinks = 1;
}

message LoraCloudGeolocBufferUplink {
  // RxInfo set for a single uplink.
  repeated gw.UplinkRxInfo rx_info = 1;
}

message PassiveRoamingDeviceSession {
  // Session ID (UUID).
  // Unfortunately we can not use the DevEUI as unique identifier
  // as the PRStartAns DevEUI field is optional.
  bytes session_id = 1;

  // NetID of the hNS.
  bytes net_id = 2;

  // DevAddr of the device.
  bytes dev_addr = 3;

  // DevEUI of the device (optional).
  bytes dev_eui = 4;

  // LoRaWAN 1.1.
  bool lorawan_1_1 = 5;

  // LoRaWAN 1.0 NwkSKey / LoRaWAN 1.1 FNwkSIntKey.
  bytes f_nwk_s_int_key = 6;

  // Lifetime.
  google.protobuf.Timestamp lifetime = 7;

  // Uplink frame-counter.
  uint32 f_cnt_up = 8;

  // Validate MIC.
  bool validate_mic = 9;
}