#include "log.h"

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

#include "err.h"
#include "utils.h"

FILE* log_file = NULL;

void log_init(void) {
    if (is_debug()) {
        log_file = fopen("./log", "a");
    } else {
        log_file = fopen(LOG_FILEPATH, "a");
    }

    if (!log_file) {
        die("Faild to open log file");
    }
}

void log_write(log_level level, const char* fmt, ...) {
    char* level_str;

    if (level == LOG_INFO) level_str = "INFO";
    if (level == LOG_WARN) level_str = "WARN";
    if (level == LOG_ERR) level_str = "ERR";

    time_t rawtime;
    struct tm* timeinfo;
    char time_str[32];

    time(&rawtime);
    timeinfo = localtime(&rawtime);
    strftime(time_str, sizeof(time_str), "%Y-%m-%d %H:%M:%S", timeinfo);

    fprintf(log_file, "[%s] [%s] ", time_str, level_str);

    va_list ap;
    va_start(ap, fmt);
    vfprintf(log_file, fmt, ap);
    va_end(ap);

    fprintf(log_file, "\n");
    fflush(log_file);
}

void log_end(FILE* log_file) {
    if (log_file) {
        fclose(log_file);
        log_file = NULL;
    }
}