#include "duckdb.hpp"

#include "duckdb/common/string_util.hpp"

#include <string>

#include <unordered_set>

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

  std::string input(reinterpret_cast<const char *>(data), size);

  duckdb::DuckDB db(nullptr);

  duckdb::Connection con(db);

  std::unordered_set<std::string> internal_error_messages = {"Unoptimized Result differs from original result!",

                                                             "INTERNAL"};

  con.Query("PRAGMA enable_verification");

  try {

    auto result = con.Query(input);

    if (result->HasError()) {

      for (auto &internal_error : internal_error_messages) {

        if (duckdb::StringUtil::Contains(result->GetError(), internal_error)) {

          return 1;

        }

      }

    }

  } catch (std::exception &e) {

  }

  return 0;

}