// Copyright 2022 Huawei Cloud Computing Technology Co., Ltd.
//
// 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.

#ifndef INCLUDED_SRC_TEST_UTILS_LOGGING_LOG_CONFIG_HPP
#define INCLUDED_SRC_TEST_UTILS_LOGGING_LOG_CONFIG_HPP

#include <cstdlib>
#include <exception>
#include <string>  // std::stoul

#include "src/buildtool/logging/log_config.hpp"
#include "src/buildtool/logging/log_level.hpp"
#include "src/buildtool/logging/log_sink_cmdline.hpp"

static auto ReadLogLevelFromEnv() -> LogLevel {
    static constexpr LogLevel kDefaultTestLogLevel = LogLevel::Error;
    static constexpr LogLevel kMaximumTestLogLevel = LogLevel::Trace;

    auto log_level{kDefaultTestLogLevel};

    auto* log_level_str = std::getenv("LOG_LEVEL_TESTS");
    if (log_level_str not_eq nullptr) {
        try {
            log_level = static_cast<LogLevel>(std::stoul(log_level_str));
        } catch (std::exception&) {
            log_level = kDefaultTestLogLevel;
        }
    }

    switch (log_level) {
        case LogLevel::Error:
        case LogLevel::Warning:
        case LogLevel::Info:
        case LogLevel::Progress:
        case LogLevel::Performance:
        case LogLevel::Debug:
        case LogLevel::Trace:
            return log_level;
    }

    // log level is out of range
    return kMaximumTestLogLevel;
}

[[maybe_unused]] static inline void ConfigureLogging() {
    LogConfig::SetLogLimit(ReadLogLevelFromEnv());
    LogConfig::SetSinks({LogSinkCmdLine::CreateFactory(false /*no color*/)});
}

#endif  // INCLUDED_SRC_TEST_UTILS_LOGGING_LOG_CONFIG_HPP