log_level.h

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// BSD 3-Clause License
// Copyright (c) 2024, kcenon
 
#pragma once
 
#include <cstdint>
#include <string_view>
 
namespace kcenon::thread {
 
enum class log_level_v2 : uint8_t {
    trace = 0,      
    debug = 1,      
    info = 2,       
    warn = 3,       
    error = 4,      
    critical = 5,   
    off = 6         
};
 
constexpr std::string_view to_string(log_level_v2 level) noexcept {
    switch (level) {
        case log_level_v2::trace:    return "TRACE";
        case log_level_v2::debug:    return "DEBUG";
        case log_level_v2::info:     return "INFO";
        case log_level_v2::warn:     return "WARN";
        case log_level_v2::error:    return "ERROR";
        case log_level_v2::critical: return "CRITICAL";
        case log_level_v2::off:      return "OFF";
        default:                     return "UNKNOWN";
    }
}
 
// ============================================================================
// Legacy log_level compatibility
// ============================================================================
// Note: Legacy log_level from thread_logger.h is deprecated.
// Use log_level_v2 or common::interfaces::log_level instead.
// See Issue #261 for migration details.
 
constexpr bool should_log(log_level_v2 message_level, log_level_v2 min_level) noexcept {
    if (min_level == log_level_v2::off) {
        return false;
    }
    return static_cast<uint8_t>(message_level) >= static_cast<uint8_t>(min_level);
}
 
inline log_level_v2 parse_log_level(std::string_view str) noexcept {
    if (str == "trace" || str == "TRACE") return log_level_v2::trace;
    if (str == "debug" || str == "DEBUG") return log_level_v2::debug;
    if (str == "info"  || str == "INFO")  return log_level_v2::info;
    if (str == "warn"  || str == "WARN" || str == "warning" || str == "WARNING")
        return log_level_v2::warn;
    if (str == "error" || str == "ERROR") return log_level_v2::error;
    if (str == "critical" || str == "CRITICAL" || str == "fatal" || str == "FATAL")
        return log_level_v2::critical;
    if (str == "off" || str == "OFF") return log_level_v2::off;
    return log_level_v2::info; // default
}
 
} // namespace kcenon::thread