#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <time.h>

#include "libosfp.h"
#include "libosfp_log.h"

/* The maximum length of the log message */
#define LIBOSFP_MAX_LOG_MSG_LEN 2048

unsigned int libosfp_log_level = LIBOSFP_LOG_LEVEL_INFO;

void libosfp_log_message(unsigned int x, const char *file, const int line, const char *func, const char *msg)
{
    char buffer[LIBOSFP_MAX_LOG_MSG_LEN] = "";
    char log_time_buf[128];
    time_t now;
    struct tm tm_now;

    time(&now);
    localtime_r(&now, &tm_now);
    strftime(log_time_buf, sizeof(log_time_buf), "%Y-%m-%d %T", &tm_now);

    switch (x) {
        case LIBOSFP_LOG_LEVEL_DEBUG:
            snprintf(buffer, sizeof(buffer), "[%s][DEBUG][%s:%d %s] %s", log_time_buf, file, line, func, msg);
            break;
        case LIBOSFP_LOG_LEVEL_INFO:
            snprintf(buffer, sizeof(buffer), "[%s][INFO][%s:%d %s] %s", log_time_buf, file, line, func, msg);
            break;
        case LIBOSFP_LOG_LEVEL_WARNING:
            snprintf(buffer, sizeof(buffer), "[%s][WARN][%s:%d %s] %s", log_time_buf, file, line, func, msg);
            break;
        case LIBOSFP_LOG_LEVEL_ERROR:
            snprintf(buffer, sizeof(buffer), "[%s][ERROR][%s:%d %s] %s", log_time_buf, file, line, func, msg);
            break;
    }

}

void libosfp_log(unsigned int x, const char *file, const char *func, const int line, const char *fmt, ...)
{
    if (libosfp_log_level >= x ) {
        char msg[LIBOSFP_MAX_LOG_MSG_LEN];
        va_list ap;
        va_start(ap, fmt);
        vsnprintf(msg, sizeof(msg), fmt, ap);
        va_end(ap);
        libosfp_log_message(x, file, line, func, msg);
    }
}

void libosfp_log_level_set(libosfp_log_level_t level)
{
    libosfp_log_level = level;
}