// MassBuilderSaveTool
// Copyright (C) 2021-2024 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>

#ifndef SAVETOOL_DEBUG_BUILD
#include <Corrade/Containers/Optional.h>
#include <Corrade/Containers/Pair.h>
#include <Corrade/Utility/Path.h>
#endif
#include <Corrade/Utility/Debug.h>

#include "Logger.h"

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

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

void
Logger::initialise() {
    #ifndef SAVETOOL_DEBUG_BUILD
    auto exe_path = Utility::Path::split(*Utility::Path::executableLocation()).first();
    _logFile.open(Utility::Path::join(exe_path, "SaveToolLog.txt").cbegin(), 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 (@williamjcm) 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{
        #ifdef SAVETOOL_DEBUG_BUILD
        &std::cout
        #else
        &_logFile
        #endif
    };

    switch(type) {
        case EntryType::Info:
            d << "[   INFO]"_s;
            break;
        case EntryType::Warning:
            d << "[WARNING]"_s;
            break;
        case EntryType::Error:
            d << "[  ERROR]"_s;
            break;
    }

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

    for(auto i = 0u; 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();
}