#include <stdio.h>
#include <stdarg.h>

#include "log.hpp"

log g_log = {0};

void log_add(double timestamp, const char* fmt, ...)
{
    va_list args;
    va_start(args, fmt);
    vsnprintf(g_log.history[g_log.write_cursor], MAX_LEN_LOG_TXT, fmt, args);
    va_end(args);

    char tmp[MAX_LEN_LOG_TXT];
    snprintf(tmp, MAX_LEN_LOG_TXT, "[%.3f] %s", timestamp, g_log.history[g_log.write_cursor]);
    tmp[MAX_LEN_LOG_TXT-1] = 0;
    memcpy(g_log.history[g_log.write_cursor], tmp, MAX_LEN_LOG_TXT);

    printf(g_log.history[g_log.write_cursor]);

    g_log.write_cursor++;
    if (g_log.write_cursor >= MAX_LEN_LOG_HISTORY) g_log.write_cursor = 0;

    g_log.history_length++;
    if (g_log.history_length > MAX_LEN_LOG_HISTORY) g_log.history_length = MAX_LEN_LOG_HISTORY;
}