// MassBuilderSaveTool
// Copyright (C) 2021-2022 Guillaume Jacquemin
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

#include <iostream>

#include <Corrade/Utility/Debug.h>

#include "Logger.h"

using Containers::Array;
using Utility::Debug;
using Utility::Warning;
using Utility::Error;

using namespace Magnum;

Logger&
Logger::instance() {
    static Logger logger;
    return logger;
}

void
Logger::initialise() {
#ifndef SAVETOOL_DEBUG_BUILD
    _logFile.open("SaveToolLog.txt", std::ios::trunc);
    _logFile << "In case you encounter a bug:\n" <<
                "1. Do not run the Save Tool again, as this log will be cleared.\n" <<
                "2. Go to either the official Sekai Project Discord guild, or the community M.A.S.S. Builder one.\n" <<
                "3. Mention me (William JCM#2301) to get my attention, with a description of the bug.\n"
                "   Please include as many details as possible, I don't want to play \"20 questions\", and neither do you.\n" <<
                "4. Send me this file _when I ask for it_, preferably in DMs.\n" <<
                std::endl;
#endif
}

void
Logger::indent() {
    _indentLevel++;
}

void
Logger::unindent() {
    if(_indentLevel > 0) {
        _indentLevel--;
    }
}

void
Logger::log(EntryType type, StringView location, StringView message) {
    Debug d{
        #ifndef SAVETOOL_DEBUG_BUILD
        &_logFile
        #else
        &std::cout
        #endif
    };

    #ifdef SAVETOOL_DEBUG_BUILD
    #define COLOURED_TEXT(colour, text) Debug::color(Debug::Color::colour) << (text) << Debug::resetColor
    #else
    #define COLOURED_TEXT(colour, text) (text)
    #endif
    switch(type) {
        case EntryType::Info:
            d << COLOURED_TEXT(Default, "[   INFO]"_s);
            break;
        case EntryType::Warning:
            d << COLOURED_TEXT(Yellow, "[WARNING]"_s);
            break;
        case EntryType::Error:
            d << COLOURED_TEXT(Red, "[  ERROR]"_s);
            break;
    }
    #undef COLOURED_TEXT

    d << "["_s << Debug::nospace << location << Debug::nospace << "]";

    for(UnsignedInt i = 0; i < _indentLevel; i++) {
        d << Debug::nospace << "    "_s << Debug::nospace;
    }

    d << ((message.back() == '\n') ? message.exceptSuffix(1) : message);
}

void
Logger::lockMutex() {
    _logMutex.lock();
}

void
Logger::unlockMutex() {
    _logMutex.unlock();
}

Logger&
logger() {
    return Logger::instance();
}