syntax = "proto3";
package grpc;

service ProximityDB {
  rpc Search(SearchRequest) returns (stream SearchResponse) {}
  rpc Add(stream AddRequest) returns (AddResponse) {}
  rpc Delete(DeleteRequest) returns (DeleteResponse) {}

  // Meta information
  rpc List(ListRequest) returns (stream DescribeResponse) {}
  rpc Describe(DescribeRequest) returns (DescribeResponse) {}
}

message Point {
  repeated float coords = 1;
}

message AddRequest {
  string name = 1;
  repeated Point points = 2;
}

message AddResponse {
  uint64 total_added = 1;
}

message SearchRequest {
  string name = 1;
  float distance = 2;
  Point point = 3;
}

message SearchResponse {
  float distance = 1;
  Point point = 2;
}

message DeleteRequest {
  string name = 1;
  repeated Point points = 2;
}

message DeleteResponse {
  int32 deleted_count = 1;
}

// Meta information

message ListRequest {
  string prefix = 1;
}

message DescribeRequest {
  string name = 1;
}

message DescribeResponse {
  string name = 1;
  uint64 dimensions = 2;
  uint64 count = 3;
  uint64 memory_size = 4;
}