syntax = "proto3";

package sqlrpc;

// SQL Service - Execute SQL queries on FlareDB
service SqlService {
  rpc Execute(SqlRequest) returns (SqlResponse);
}

message SqlRequest {
  string namespace = 1;
  string sql = 2;
}

message SqlResponse {
  oneof result {
    DdlResult ddl_result = 1;
    DmlResult dml_result = 2;
    QueryResult query_result = 3;
    ErrorResult error = 4;
  }
}

message DdlResult {
  string message = 1;  // "Table created", "Table dropped", etc.
}

message DmlResult {
  uint64 rows_affected = 1;
}

message QueryResult {
  repeated string columns = 1;
  repeated Row rows = 2;
}

message Row {
  repeated SqlValue values = 1;
}

message SqlValue {
  oneof value {
    int64 int_value = 1;
    string text_value = 2;
    bool bool_value = 3;
    uint64 timestamp_value = 4;
  }
  bool is_null = 5;
}

message ErrorResult {
  string error = 1;
}