#pragma once

#include <iostream>
#include <cstdio>
#include <cstdarg>
#include <ctime>
#include <string>

using std::cout;
using std::endl;
using std::string;

// 日志是有日志级别的
#define DEBUG 0   //  调试
#define NORMAL 1  //  正常
#define WARNING 2 //  警告
#define ERROR 3   //  错误
#define FATAL 4   //  致命错误

#define LOGFILE "./calculato.log"
static const size_t BUFFER_NUM = 1024;
const char *gLevelMap[] = {
    "DEBUG",
    "NORMAL",
    "WARNING",
    "ERROR",
    "FATAL"};

// 完整的日志功能，至少: 日志等级 时间 支持用户自定义(日志内容, 文件行，文件名)
void LogMessage(int level, const char *format, ...)
{
    char stdBuffer[BUFFER_NUM]; // 标准部分
    const time_t timestamp = time(nullptr);
    struct tm *L_Time = localtime(&timestamp);
    string time;
    time += "日期-时间:" + std::to_string(L_Time->tm_year+1900) + "/" + std::to_string(L_Time->tm_mon+1) + "/" + std::to_string(L_Time->tm_mday) + "-" + std::to_string(L_Time->tm_hour) + ":" + std::to_string(L_Time->tm_min) + ":" + std::to_string(L_Time->tm_sec);
    std::to_string(L_Time->tm_sec);
    snprintf(stdBuffer, sizeof stdBuffer, "[%s][%s]",
             gLevelMap[level], time.c_str());

    char logBuffer[BUFFER_NUM]; // 自定义部分
    va_list args;
    va_start(args, format);
    vsnprintf(logBuffer, sizeof logBuffer, format, args);
    va_end(args);

    //FILE *fp = fopen(LOGFILE, "a");
    printf("%s%s\n", stdBuffer, logBuffer);
    //fprintf(fp, "%s%s\n", stdBuffer, logBuffer);
    //fclose(fp);
}