File.cpp

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/*
* True Reality Open Source Game and Simulation Engine
* Copyright © 2021 Acid Rain Studios LLC
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 3.0 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @author Maxim Serebrennik
*/

#include <trUtil/JSON/File.h>

#include <trUtil/JSON/Array.h>
#include <trUtil/JSON/Object.h>

#include <trUtil/Exception.h>
#include <trUtil/FileUtils.h>
#include <trUtil/PathUtils.h>
#include <trUtil/PlatformMacros.h>
#include <trUtil/StringUtils.h>
#include <trUtil/WarningUtils.h>
#include <trUtil/Logging/Log.h>

#include <json/reader.h>
#include <json/writer.h>
#include <osgDB/fstream>

#include <iostream>
#include <cstdio>

namespace trUtil::JSON
{
    const std::string File::DEFAULT_JSON_FILE_NAME = std::string("Default.json");

    File::File() : File(DEFAULT_JSON_FILE_NAME)
    {}

    File::File(std::string fileName)
    {
        mFileName = fileName;
        mFilePath = PathUtils::GetUserConfigPath();
    }

    File::~File()
    {
    }

    bool File::ReadFromFile()
    {
        return ReadFromFile(mFileName);
    }

    bool File::ReadFromFile(std::string fileName)
    {
        try
        {
            mFileName = fileName;
            std::string fullFilePath = mFilePath + "/" + mFileName;
            Json::CharReaderBuilder reader;

            //Open a file for reading.
            LOG_D("Opening JSON File for Reading: " + fullFilePath);

            //Read the file into the input stream.
            LOG_D("Reading JSON File: " + fullFilePath);
            osgDB::ifstream inputStream(fullFilePath.c_str(), std::ifstream::binary);

            if (inputStream)
            {
                //Clear the root node for new input
                mRoot.Clear();

                //Parse the stream into the document
                LOG_D("Parsing JSON File");

                JSONCPP_STRING errs;
                if (!Json::parseFromStream(reader, inputStream, &mRoot.GetJsonValue(), &errs))
                {
                    LOG_E("JSON Parsing Error: " + errs);
                    return false;
                }

                //Close the input stream
                inputStream.close();
                return true;
            }
            else
            {
                LOG_E("Can't open: " + fullFilePath);
                return false;
            }
        }
        catch (const trUtil::Exception& ex)
        {
            ex.LogException(trUtil::Logging::LogLevel::LOG_ERROR);
            return false;
        }
    }

    bool File::WriteToFile()
    {
        return WriteToFile(mFileName);
    }

    bool File::WriteToFile(std::string fileName)
    {
        try
        {
            mFileName = fileName;
            std::string fullFilePath = mFilePath + "/" + mFileName;
            Json::StreamWriterBuilder builder;
            builder["indentation"]="    ";
            std::unique_ptr<Json::StreamWriter> streamWriter(builder.newStreamWriter());

            //Open a file for writing
            LOG_D("Opening JSON File for Writing: " + fullFilePath);
            osgDB::ofstream outputStream(fullFilePath.c_str());

            //Writing the file
            LOG_D("Writing file");
            streamWriter->write(mRoot, &outputStream);
            LOG_D("Closing file");
            outputStream.close();
            LOG_D("File Closed");

            return true;
        }
        catch (const trUtil::Exception& ex)
        {
            ex.LogException(trUtil::Logging::LogLevel::LOG_ERROR);
            return false;
        }
    }

    void File::SetFileName(std::string fileName)
    {
        mFileName = fileName;
    }

    std::string File::GetFileName() const
    {
        return mFileName;
    }

    void File::SetFilePath(std::string newPath)
    {
        mFilePath = newPath;
    }

    std::string File::GetFilePath() const
    {
        return mFilePath;
    }

    bool File::FileExists()
    {
        return trUtil::FileUtils::GetInstance().FileExists(mFilePath + "/" + mFileName);
    }

    void File::Clear()
    {
        mRoot.Clear();
    }

    Value& File::GetJSONRoot()
    {
        return mRoot;
    }

    void File::PrintJSONRoot()
    {
        std::cout << mRoot << std::endl;
    }

    bool File::KeyPresent(const std::string &key) const
    {
        return mRoot.HasMember(key);
    }

    bool File::IsNull(const std::string &key) const
    {
        return mRoot.IsNull(key);
    }

    void File::SetNull(const std::string &key)
    {
        mRoot.SetNull(key);
    }

    bool File::IsBool(const std::string &key) const
    {
        return mRoot.IsBool(key);
    }

    bool File::GetBool(const std::string &key) const
    {
        return mRoot.GetBool(key);
    }

    void File::SetBool(const std::string &key, const bool &value)
    {
        mRoot.SetBool(key, value);
    }

    bool File::IsTrue(const std::string &key) const
    {
        if (KeyPresent(key))
        {
            if (GetBool(key) == true)
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        return false;
    }

    bool File::IsFalse(const std::string &key) const
    {
        if (KeyPresent(key))
        {
            if (GetBool(key) == false)
            {
                return true;
            }
            else
            {
                return false;
            }
        }
        return false;
    }

    bool File::IsNumber(const std::string &key) const
    {
        return mRoot.IsNumber(key);
    }

    bool File::IsInt(const std::string &key) const
    {
        return mRoot.IsInt(key);
    }

    int File::GetInt(const std::string &key) const
    {
        return mRoot.GetInt(key);
    }

    void File::SetInt(const std::string &key, const int &value)
    {
        mRoot.SetInt(key, value);
    }

    bool File::IsDouble(const std::string &key) const
    {
        return mRoot.IsDouble(key);
    }

    double File::GetDouble(const std::string &key) const
    {
        return mRoot.GetDouble(key);
    }

    void File::SetDouble(const std::string &key, const double &value)
    {
        mRoot.SetDouble(key, value);
    }

    bool File::IsUInt(const std::string &key) const
    {
        return mRoot.IsUInt(key);
    }

    unsigned int File::GetUInt(const std::string &key) const
    {
        return mRoot.GetUInt(key);
    }

    void File::SetUInt(const std::string &key, const unsigned int &value)
    {
        mRoot.SetUInt(key, value);
    }

    bool File::IsInt64(const std::string &key) const
    {
        return mRoot.IsInt64(key);
    }

    Int64 File::GetInt64(const std::string &key) const
    {
        return mRoot.GetInt64(key);
    }

    void File::SetInt64(const std::string &key, const Int64 &value)
    {
        mRoot.SetInt64(key, value);
    }

    bool File::IsUInt64(const std::string &key) const
    {
        return mRoot.IsUInt64(key);
    }

    UInt64 File::GetUInt64(const std::string &key) const
    {
        return mRoot.GetUInt64(key);
    }

    void File::SetUInt64(const std::string &key, const UInt64 &value)
    {
        mRoot.SetUInt64(key, value);
    }

    bool File::IsFloat(const std::string &key) const
    {
        return mRoot.IsFloat(key);
    }

    float File::GetFloat(const std::string &key) const
    {
        return mRoot.GetFloat(key);
    }

    void File::SetFloat(const std::string &key, const float &value)
    {
        mRoot.SetFloat(key, value);
    }

    bool File::IsString(const std::string &key) const
    {
        return mRoot.IsString(key);
    }

    const std::string File::GetString(const std::string &key) const
    {
        return mRoot.GetString(key);
    }

    void File::SetString(const std::string &key, const std::string &value)
    {
        mRoot.SetString(key, value);
    }

    bool File::IsArray(const std::string &key) const
    {
        return mRoot.IsArray(key);
    }

    Array File::GetArray(const std::string &key) const
    {
        return mRoot.GetArray(key);
    }

    void File::SetArray(const std::string &key, Array &value)
    {
        mRoot.SetArray(key, value);
    }

    bool File::IsObject(const std::string &key) const
    {
        return mRoot.IsObject(key);
    }

    Object File::GetObject(const std::string &key) const
    {
        return mRoot.GetObject(key);
    }

    void File::SetObject(const std::string &key, Object &value)
    {
        mRoot.SetObject(key, value);
    }
}