syntax = "proto3";

package chatto.discovery.v1;

import "chatto/api/v1/server.proto";
import "google/protobuf/descriptor.proto";

// Request for public server metadata.
message GetServerRequest {}

// Public metadata clients need before they can authenticate or render the
// initial server view.
message GetServerResponse {
  // Public server profile and branding.
  chatto.api.v1.ServerPublicProfile profile = 1;
  // Login and registration options.
  chatto.api.v1.ServerLogin login = 2;
}

// Request for the public Neighbor directory.
message ListNeighborsRequest {}

// Publicly advertised canonical server origins. The response has no ordering
// contract.
message ListNeighborsResponse {
  repeated string origins = 1;
}

// Provides unauthenticated server discovery metadata.
service ServerDiscoveryService {
  // Returns public server metadata, branding, registration status, and login
  // provider information. This fully public RPC is available before login so
  // clients can render the first server screen and authentication choices.
  rpc GetServer(GetServerRequest) returns (GetServerResponse) {
    option idempotency_level = NO_SIDE_EFFECTS;
  }
  // Returns the public Neighbor directory without requiring a session.
  rpc ListNeighbors(ListNeighborsRequest) returns (ListNeighborsResponse) {
    option idempotency_level = NO_SIDE_EFFECTS;
  }
}