// Copyright 2023 The ChromiumOS Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <base/logging.h>
#include <brillo/flag_helper.h>
#include <brillo/syslog_logging.h>

#include "fbpreprocessor/configuration.h"
#include "fbpreprocessor/fbpreprocessor_daemon.h"

namespace {
constexpr int kMaxLogLevel = 4;
constexpr int kMinLogLevel = -4;

void ValidateAndSetMinLogLevel(int log_level) {
  if (log_level > kMaxLogLevel || log_level < kMinLogLevel) {
    LOG(ERROR) << "Log level (" << log_level << ") exceeds the valid range. "
               << "Keep as the system default level.";
    return;
  }
  LOG(INFO) << "Setting log level as " << log_level;
  if (log_level > logging::LOGGING_INFO) {
    LOG(WARNING) << "Log level larger than INFO. This is unusual and please "
                    "make sure the correct log_level is configured.";
  }
  logging::SetMinLogLevel(log_level);
}
}  // namespace

int main(int argc, char* argv[]) {
  DEFINE_int32(log_level, logging::LOGGING_INFO,
               "Logging level - 0: LOG(INFO), 1: LOG(WARNING), 2: LOG(ERROR), "
               "-1: VLOG(1), -2: VLOG(2), ...");
  DEFINE_uint32(file_expiration,
                fbpreprocessor::Configuration::kDefaultExpirationSeconds,
                "Default expiration period of processed files, in seconds.");

  brillo::FlagHelper::Init(
      argc, argv, "fbpreprocessord, the debug data preprocessing daemon.");

  brillo::InitLog(brillo::kLogToSyslog | brillo::kLogHeader);

  LOG(INFO) << "Starting fbpreprocessord.";
  ValidateAndSetMinLogLevel(FLAGS_log_level);

  fbpreprocessor::Configuration config;
  int file_expiration = FLAGS_file_expiration;
  // Don't make it possible to have an arbitrary long expiration period with a
  // misconfigured command line.
  if (file_expiration >
      fbpreprocessor::Configuration::kDefaultExpirationSeconds) {
    file_expiration = fbpreprocessor::Configuration::kDefaultExpirationSeconds;
    LOG(ERROR) << "File expiration set to invalid " << FLAGS_file_expiration
               << " seconds, resetting to " << file_expiration << " seconds.";
  }
  LOG(INFO) << "Default file expiration set to " << file_expiration << "s";
  config.set_default_expirations_secs(file_expiration);

  fbpreprocessor::FbPreprocessorDaemon daemon(config);
  return daemon.Run();
}