#include "TimestampLog.hpp"

#include <format>
#include <chrono>

namespace ugly {

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


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

}