// Copyright 2020 Google LLC

//

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

//

//      http://www.apache.org/licenses/LICENSE-2.0

//

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

#include <cstddef>

#include <fuzzer/FuzzedDataProvider.h>

#include "spdlog/spdlog.h"

#include "spdlog/sinks/basic_file_sink.h"

#include "spdlog/cfg/argv.h"

#include "spdlog/cfg/env.h"

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

  if (size == 0) {

    return 0;

  }

  static std::shared_ptr<spdlog::logger> my_logger;

  if (!my_logger.get()) {

    my_logger = spdlog::basic_logger_mt("basic_logger", "/dev/null");

    spdlog::set_default_logger(my_logger);

  }

  FuzzedDataProvider stream(data, size);

  std::vector<std::string> strings;

  const unsigned char strsize = stream.ConsumeIntegral<unsigned char>();

  for(unsigned char i=0; i<strsize; i++){

    strings.push_back(stream.ConsumeRandomLengthString());

  }

  std::vector<char*> argvv; argvv.reserve(strsize);

  for(unsigned char i=0; i< strsize; ++i){

    argvv.push_back(const_cast<char*>(strings[i].c_str()));

  }

  if(strsize==0) return 0;

  const char** argv = (const char**) &argvv[0];

  spdlog::cfg::load_env_levels();

  spdlog::cfg::load_argv_levels(strsize, argv);

  spdlog::info(stream.ConsumeRemainingBytesAsString());

  return 0;

}