#include "debug_log.h"

void DEBUG_LOG(const char* msg, ...) {
    char message[256] = { 0 };
    va_list args;
    va_start(args, msg);
    vsprintf(message, msg, args);
    va_end(args);
    Debug_LOG::log()->write_log(message);
}

Debug_LOG* Debug_LOG::m_log = NULL;

Debug_LOG::Debug_LOG() :
    tim(0),
    t(NULL),
    fp(NULL),
    filepath(),
    message(),
    last_log_time()
{
#ifdef __WRITE_FILE__
    create_log_file();
#endif
}

Debug_LOG::~Debug_LOG() {
#ifdef __WRITE_FILE__
    fclose(fp);
#endif
}

void Debug_LOG::create_log_file() {
    if (fp != NULL)
        fclose(fp);

    sprintf(filepath, "./log/debuglog_");
    time(&tim);
    t = localtime(&tim);
    memcpy(&last_log_time, t, sizeof(struct tm));
    sprintf(filepath + 15, "%02d_%02d", t->tm_mon + 1, t->tm_mday);
    fp = fopen(filepath, "a+");
}

Debug_LOG* Debug_LOG::log() {
    if (m_log == NULL) {
        m_log = new Debug_LOG();
    }
    return m_log;
}

void Debug_LOG::write_log(const char* msg) {
    time(&tim);
    t = localtime(&tim);
    sprintf(message, "[%02d:%02d:%02d] %s\n", t->tm_hour, t->tm_min, t->tm_sec, msg);
#ifdef __WRITE_FILE__
    if (t->tm_mday != last_log_time.tm_mday || t->tm_mon != last_log_time.tm_mon
        || t->tm_year != last_log_time.tm_year)
        create_log_file();
    fwrite(message, strlen(message), 1, fp);
    fflush(fp);
#else
    printf("\n%s", message);
    fflush(stdout);
#endif
}