#include <iostream>
#include "JkLog.h"

std::string getFileName(const std::string& s) {

    char sep = '/';

#ifdef _WIN32
    sep = '\\';
#endif

    size_t i = s.rfind(sep, s.length());
    if (i != std::string::npos) {
        return(s.substr(i+1, s.length() - i));
    }

    return("");
}

JkLog::JkLog() {}

JkLog::~JkLog() {}

JkLog* JkLog::instance;

JkLog *JkLog::getInstance() {
    if (0 == JkLog::instance) {
        JkLog::instance = new JkLog();
    }
    return JkLog::instance;
}

void JkLog::setInstance(JkLog* instance) {
    JkLog::instance = instance;
}

void JkLog::error(const std::string& file, int line, const std::string &message) {
    log(JK_ERROR, file, line, message);
}

void JkLog::warn(const std::string& file, int line, const std::string &message) {
    log(JK_WARN, file, line, message);
}

void JkLog::info(const std::string& file, int line, const std::string &message) {
    log(JK_INFO, file, line, message);
}

void JkLog::debug(const std::string& file, int line, const std::string &message) {
    log(JK_DEBUG, file, line, message);
}

void JkLog::verbose(const std::string& file, int line, const std::string &message) {
    log(JK_VERBOSE, file, line, message);
}

void JkLog::log(int logLevel, const std::string& file, int line, const std::string &message) {
    JkLog::getInstance()->log_impl(logLevel, file, line, message);
}

void JkLog::log_impl(int logLevel, const std::string& file, int line, const std::string &message) const {
    std::string fileOnly = getFileName(file);
    switch (logLevel) {
        case JK_ERROR:
            std::cerr << "[Error] " << fileOnly << ":" << line << " " << message << std::endl;
            break;
        case JK_WARN:
            std::cout << "[Warn] " << fileOnly << ":" << line << " " << message << std::endl;
            break;
        case JK_INFO:
            std::cout << "[Info] " << fileOnly << ":" << line << " " << message << std::endl;
            break;
        case JK_DEBUG:
            std::cout << "[Debug] " << fileOnly << ":" << line << " " << message << std::endl;
            break;
        case JK_VERBOSE:
            std::cout << "[Verbose] " << fileOnly << ":" << line << " " << message << std::endl;
            break;
        default:
            break;
    }
}