syntax = "proto3";

package meshcore.v1;

option go_package = "github.com/corescope/proto/v1";

import "common.proto";
import "packet.proto";

// ─── Core Observer Type ────────────────────────────────────────────────────────

// Observer device — a gateway that receives and reports mesh packets.
// Used in GET /api/observers list and GET /api/observers/:id detail.
message Observer {
  // Unique observer device identifier.
  string id = 1;
  // Display name (null if not configured).
  optional string name = 2;
  // IATA region code (e.g. "SFO").
  optional string iata = 3;
  // Last time this observer reported a packet (ISO 8601).
  string last_seen = 4 [json_name = "last_seen"];
  // When this observer was first seen (ISO 8601).
  string first_seen = 5 [json_name = "first_seen"];
  // Total packets reported by this observer.
  int32 packet_count = 6 [json_name = "packet_count"];
  // Hardware model identifier.
  optional string model = 7;
  // Firmware version string.
  optional string firmware = 8;
  // Client software version.
  optional string client_version = 9 [json_name = "client_version"];
  // Radio module identifier.
  optional string radio = 10;
  // Battery voltage in millivolts.
  optional int32 battery_mv = 11 [json_name = "battery_mv"];
  // Device uptime in seconds.
  optional int64 uptime_secs = 12 [json_name = "uptime_secs"];
  // Measured noise floor (dBm).
  optional double noise_floor = 13 [json_name = "noise_floor"];
  // Packets received in the last hour (computed, not stored).
  int32 packets_last_hour = 14 [json_name = "packetsLastHour"];
  // Latitude from matched node (null if no match).
  optional double lat = 15;
  // Longitude from matched node (null if no match).
  optional double lon = 16;
  // Role from matched node (null if no match).
  optional string node_role = 17 [json_name = "nodeRole"];
}

// ─── API Responses ─────────────────────────────────────────────────────────────

// GET /api/observers — list all observers.
message ObserverListResponse {
  repeated Observer observers = 1;
  // Server's current time (ISO 8601) for client-side staleness checks.
  string server_time = 2 [json_name = "server_time"];
}

// GET /api/observers/:id — single observer detail.
// Same shape as Observer but without the list-only computed fields (lat, lon, nodeRole).
// Uses the same Observer message — those fields will be absent (zero-value).
// No wrapper object: the Observer fields are the top-level response.
message ObserverDetailResponse {
  // Observer device identifier.
  string id = 1;
  optional string name = 2;
  optional string iata = 3;
  string last_seen = 4 [json_name = "last_seen"];
  string first_seen = 5 [json_name = "first_seen"];
  int32 packet_count = 6 [json_name = "packet_count"];
  optional string model = 7;
  optional string firmware = 8;
  optional string client_version = 9 [json_name = "client_version"];
  optional string radio = 10;
  optional int32 battery_mv = 11 [json_name = "battery_mv"];
  optional int64 uptime_secs = 12 [json_name = "uptime_secs"];
  optional double noise_floor = 13 [json_name = "noise_floor"];
  int32 packets_last_hour = 14 [json_name = "packetsLastHour"];
}

// ─── Observer Analytics ────────────────────────────────────────────────────────

// SNR distribution entry (e.g. "6 to 8").
message SnrDistributionEntry {
  // Range label (e.g. "6 to 8", "-10 to -8").
  string range = 1;
  // Packet count in this range.
  int32 count = 2;
}

// GET /api/observers/:id/analytics — per-observer analytics.
message ObserverAnalyticsResponse {
  // Packet count over time (bucketed by hours or days).
  repeated TimeBucket timeline = 1;
  // Packet counts keyed by payload_type number (as string key).
  map<string, int32> packet_types = 2 [json_name = "packetTypes"];
  // Unique nodes seen per time bucket.
  repeated TimeBucket nodes_timeline = 3 [json_name = "nodesTimeline"];
  // SNR distribution in labeled ranges.
  repeated SnrDistributionEntry snr_distribution = 4 [json_name = "snrDistribution"];
  // Last 20 enriched observations (Observation-shaped, includes transmission_id).
  repeated Observation recent_packets = 5 [json_name = "recentPackets"];
}