#include "loggger.h"

constexpr const std::array<std::string_view, static_cast<int>(Logger::Severity::fatal) + 1> logSettings({
    /*debug*/   "\e[90m",
    /*info*/    "\e[32m",
    /*minor*/   "\e[34m",
    /*major*/   "\e[94m",
    /*warning*/ "\e[33m",
    /*error*/   "\e[31m",
    /*fatal*/   "\e[91m"
});

constexpr const std::array<std::string_view, static_cast<int>(Logger::Severity::fatal) + 1> logHeaders({
    /*debug*/   "DEBUG: ",
    /*info*/    "INFO: ",
    /*minor*/   "MINOR: ",
    /*major*/   "MAJOR: ",
    /*warning*/ "WARNING: ",
    /*error*/   "ERROR: ",
    /*fatal*/   "FATAL: "
});

constexpr const std::string_view bold("\e[1m");
constexpr const std::string_view regular("\e[22m");
constexpr const std::string_view clearStyle("\e[0m");

Logger::Logger(Logger::Severity severity, bool accumulate):
    accumulate(accumulate),
    currentSeverity(severity),
    history(),
    readMutex(),
    writeMutex()
{}

Logger::~Logger()
{}

void Logger::printLog(bool colored) const {
    std::cout << std::endl;
    std::scoped_lock lock(readMutex);
    for (const Message& message : history)
        printMessage(message, colored);

    if (colored)
        std::cout << clearStyle << std::flush;
}

void Logger::log(Logger::Severity severity, const std::string& comment, bool colored) const {
    if (severity < currentSeverity)
        return;

    if (accumulate) {
        std::scoped_lock lock(readMutex, writeMutex);
        history.emplace_back(severity, comment);
    } else {
        std::scoped_lock lock(writeMutex);
        printMessage({severity, comment}, colored);

        if (colored)
            std::cout << clearStyle << std::flush;
    }
}

std::list<std::pair<Logger::Severity, std::string>> Logger::getLog() const {
    std::scoped_lock lock(readMutex);
    return history;
}

void Logger::printMessage(const Message& message, bool colored) const {
    if (colored) {
        int severity = static_cast<int>(message.first);
        std::cout << logSettings[severity] << bold << logHeaders[severity] << regular;
    }
    std::cout << message.second << std::endl;
}