/*
  ==============================================================================
  Copyright 2022 Nicolas Chambert

This program is free software : you can redistribute itand /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 < http://www.gnu.org/licenses/>.

  ==============================================================================
*/

/*
  ==============================================================================

     Gestion de la sauvegarde de la configuration courante.

  ==============================================================================
*/

#include "Config.h"

// petit singleton
Config* Config::instance = nullptr;


Config& Config::Load()
{
  if (instance == nullptr)
    instance = new Config();

  // On cherche le fichier json dans le repertoire courant
  juce::File curDir{ juce::File::getSpecialLocation(juce::File::SpecialLocationType::currentExecutableFile).getParentDirectory() };
  juce::File confFile{ curDir.getChildFile("tchick.json") };

  if (confFile.exists())
  {
    // s'il existe, on le charge
    auto content = juce::JSON::parse(confFile);
    instance->fromVar(content);
  }

  return *instance;
}

void Config::Save(Metronome& metro, OptionsPanel& options)
{
  // On initialise les paramètres
  instance->bpm = metro.getBPM();
  instance->measures = metro.getMeasures();
  instance->gain = metro.getGain();
  instance->figure = (int)metro.getFigure();
  instance->sound = options.getSoundName();

  // on transforme en var
  juce::var obj = instance->asVar();

  // on met à jours le fichier
  juce::File curDir{ juce::File::getSpecialLocation(juce::File::SpecialLocationType::currentExecutableFile).getParentDirectory() };
  juce::File confFile{ curDir.getChildFile("tchick.json") };
  juce::FileOutputStream stream(confFile);

  if (stream.openedOk())
  {
    // méthode préconisé pour ecraser le fichier existant
    stream.setPosition(0);
    stream.truncate();
    juce::JSON::writeToStream(stream, obj);
  }
}

juce::var Config::asVar()
{
  // création du var à partir de this
  juce::DynamicObject* obj = new juce::DynamicObject();
  juce::NamedValueSet& properties = obj->getProperties();
  properties.set("bpm", bpm);
  properties.set("measures", measures);
  properties.set("gain", gain);
  properties.set("sound", sound);
  properties.set("figure", figure);
  return juce::var(obj);
}

void Config::fromVar(juce::var var)
{
  // chargement des paramètres depuis un var
  juce::DynamicObject* obj = var.getDynamicObject();
  juce::NamedValueSet& properties = obj->getProperties();

  if(properties.contains("bpm")) bpm = properties["bpm"];
  if(properties.contains("measures")) measures = properties["measures"];
  if(properties.contains("gain")) gain = properties["gain"];
  if(properties.contains("sound")) sound = properties["sound"];
  if(properties.contains("figure")) figure = properties["figure"];
}