#include "TimestampLog.hpp"

#include <format>
#include <chrono>


ugly::TimestampLog::TimestampLog(std::ostream &os, std::string_view description):
    mrOutputStream{os},
    mDescription{description},
    mStart{std::chrono::high_resolution_clock::now()} {}


void ugly::TimestampLog::vlog(std::string_view fmt, std::format_args args) {
    auto now = std::chrono::high_resolution_clock::now();
    auto timestamp = std::chrono::duration_cast<std::chrono::duration<float>>(now - mStart).count();
    auto message = std::vformat(fmt, args);
    mrOutputStream << std::format("[{:9.4f}] {}: {}\n", timestamp, mDescription, message);
}