// Minimal structured logger (key=value pairs, levels, secret redaction). No external dependency.
#pragma once
#include <string>
#include <string_view>
#include <vector>
#include <utility>
#include <functional>
#include <mutex>

namespace raid::log {

enum class Level : int { trace = 0, debug = 1, info = 2, warn = 3, error = 4, off = 5 };
using Fields = std::vector<std::pair<std::string, std::string>>;
using Sink = std::function<void(Level, std::string_view msg, const Fields&)>;

void set_level(Level l);
Level level();
void set_sink(Sink s);  // default: stderr, one line per event, "level msg k=v k=v"
void emit(Level l, std::string_view msg, Fields fields = {});
/// Replaces bearer tokens / api keys ("fd_xxx.yyy", "Bearer …") by "<redacted>".
std::string redact(std::string_view s);

inline void info(std::string_view m, Fields f = {}) { emit(Level::info, m, std::move(f)); }
inline void warn(std::string_view m, Fields f = {}) { emit(Level::warn, m, std::move(f)); }
inline void error(std::string_view m, Fields f = {}) { emit(Level::error, m, std::move(f)); }
inline void debug(std::string_view m, Fields f = {}) { emit(Level::debug, m, std::move(f)); }

}  // namespace raid::log