#include "Settings.h"

#include <Preferences.h>

namespace {
constexpr char kNamespace[] = "rsvp";
}

void Settings::begin() {}

SavedState Settings::load() const {
  Preferences preferences;
  preferences.begin(kNamespace, true);
  SavedState state;
  state.bookPath = preferences.getString("book", "");
  state.wordIndex = preferences.getUInt("word", 0);
  state.wpm = preferences.getUShort("wpm", 300);
  state.brightness = preferences.getUChar("brightness", 5);
  state.fontStyle = preferences.getUChar("font_style", 0);
  state.fontSize = preferences.getUChar("font_size", 20);
  preferences.end();
  return state;
}

void Settings::save(const SavedState& state) const {
  Preferences preferences;
  preferences.begin(kNamespace, false);
  if (!preferences.isKey("book") || preferences.getString("book") != state.bookPath) {
    preferences.putString("book", state.bookPath);
  }
  if (!preferences.isKey("word") || preferences.getUInt("word") != state.wordIndex) {
    preferences.putUInt("word", state.wordIndex);
  }
  if (!preferences.isKey("wpm") || preferences.getUShort("wpm") != state.wpm) {
    preferences.putUShort("wpm", state.wpm);
  }
  if (!preferences.isKey("brightness") ||
      preferences.getUChar("brightness") != state.brightness) {
    preferences.putUChar("brightness", state.brightness);
  }
  if (!preferences.isKey("font_style") ||
      preferences.getUChar("font_style") != state.fontStyle) {
    preferences.putUChar("font_style", state.fontStyle);
  }
  if (!preferences.isKey("font_size") || preferences.getUChar("font_size") != state.fontSize) {
    preferences.putUChar("font_size", state.fontSize);
  }
  preferences.end();
}