#include "settings.h"

#include <QSettings>

namespace
{
const QString qs_guiGroup = "GUI";
const QString qs_captureHotkey = "captureHotkey";
const QString qs_repeatCaptureHotkey = "repeatCaptureHotkey";
const QString qs_repeatHotkey = "repeatHotkey";
const QString qs_clipboardHotkey = "clipboardHotkey";
const QString qs_resultShowType = "resultShowType";
const QString qs_proxyType = "proxyType";
const QString qs_proxyHostName = "proxyHostName";
const QString qs_proxyPort = "proxyPort";
const QString qs_proxyUser = "proxyUser";
const QString qs_proxyPassword = "proxyPassword";
const QString qs_proxySavePassword = "proxySavePassword";
const QString qs_autoUpdateType = "autoUpdateType";
const QString qs_lastUpdateCheck = "lastUpdateCheck";

const QString qs_recogntionGroup = "Recognition";
const QString qs_tessDataPlace = "tessdata_dir";
const QString qs_ocrLanguage = "language";
const QString qs_imageScale = "image_scale";

const QString qs_translationGroup = "Translation";
const QString qs_doTranslation = "doTranslation";
const QString qs_ignoreSslErrors = "ignoreSslErrors";
const QString qs_forceRotateTranslators = "forceRotateTranslators";
const QString qs_sourceLanguage = "source_language";
const QString qs_translationLanguage = "translation_language";
const QString qs_translationTimeout = "translation_timeout";
const QString qs_debugMode = "translation_debug";
const QString qs_translators = "translators";

QString shuffle(const QString &source)
{
  if (source.isEmpty()) {
    return source;
  }
  char encKeys[] = {14, 26, 99, 43};
  std::string result = source.toStdString();
  for (size_t i = 0, end = result.size(); i < end; ++i) {
    result[i] = result[i] ^ encKeys[i % sizeof(encKeys)];
  }
  return QString::fromUtf8(result.data());
}

}  // namespace

void Settings::save()
{
  QSettings settings;

  settings.beginGroup(qs_guiGroup);

  settings.setValue(qs_captureHotkey, captureHotkey);
  settings.setValue(qs_repeatCaptureHotkey, repeatCaptureHotkey);
  settings.setValue(qs_repeatHotkey, showLastHotkey);
  settings.setValue(qs_clipboardHotkey, clipboardHotkey);

  settings.setValue(qs_resultShowType, int(resultShowType));

  settings.setValue(qs_proxyType, proxyType);
  settings.setValue(qs_proxyHostName, proxyHostName);
  settings.setValue(qs_proxyPort, proxyPort);
  settings.setValue(qs_proxyUser, proxyUser);
  settings.setValue(qs_proxySavePassword, proxySavePassword);
  if (proxySavePassword) {
    settings.setValue(qs_proxyPassword, shuffle(proxyPassword));
  } else {
    settings.remove(qs_proxyPassword);
  }

  settings.setValue(qs_autoUpdateType, autoUpdateType);

  settings.endGroup();

  settings.beginGroup(qs_recogntionGroup);

  settings.setValue(qs_tessDataPlace, tessdataPath);
  settings.setValue(qs_ocrLanguage, sourceLanguage);

  // TODO corrector

  settings.endGroup();

  settings.beginGroup(qs_translationGroup);

  settings.setValue(qs_doTranslation, doTranslation);
  settings.setValue(qs_ignoreSslErrors, ignoreSslErrors);
  settings.setValue(qs_debugMode, debugMode);
  settings.setValue(qs_translationLanguage, targetLanguage);
  settings.setValue(qs_translationTimeout, int(translationTimeout.count()));
  settings.setValue(qs_translators, translators);

  settings.endGroup();
}

void Settings::load()
{
  QSettings settings;

  settings.beginGroup(qs_guiGroup);

  captureHotkey = settings.value(qs_captureHotkey, captureHotkey).toString();
  repeatCaptureHotkey =
      settings.value(qs_repeatCaptureHotkey, repeatCaptureHotkey).toString();
  showLastHotkey = settings.value(qs_repeatHotkey, showLastHotkey).toString();
  clipboardHotkey =
      settings.value(qs_clipboardHotkey, clipboardHotkey).toString();

  resultShowType = ResultMode(std::clamp(
      settings.value(qs_resultShowType, int(resultShowType)).toInt(), 0, 1));

  proxyType = settings.value(qs_proxyType, proxyType).toInt();
  proxyHostName = settings.value(qs_proxyHostName, proxyHostName).toString();
  proxyPort = settings.value(qs_proxyPort, proxyPort).toInt();
  proxyUser = settings.value(qs_proxyUser, proxyUser).toString();
  proxySavePassword =
      settings.value(qs_proxySavePassword, proxySavePassword).toBool();
  proxyPassword = shuffle(settings.value(qs_proxyPassword).toString());

  autoUpdateType = settings.value(qs_autoUpdateType, autoUpdateType).toInt();

  settings.endGroup();

  settings.beginGroup(qs_recogntionGroup);

  tessdataPath = settings.value(qs_tessDataPlace, tessdataPath).toString();
  sourceLanguage = settings.value(qs_ocrLanguage, sourceLanguage).toString();

  settings.endGroup();

  settings.beginGroup(qs_translationGroup);

  doTranslation = settings.value(qs_doTranslation, doTranslation).toBool();
  ignoreSslErrors =
      settings.value(qs_ignoreSslErrors, ignoreSslErrors).toBool();
  debugMode = settings.value(qs_debugMode, debugMode).toBool();
  targetLanguage =
      settings.value(qs_translationLanguage, targetLanguage).toString();
  translationTimeout = std::chrono::seconds(
      settings.value(qs_translationTimeout, int(translationTimeout.count()))
          .toInt());
  translators = settings.value(qs_translators, translators).toStringList();
  if (translators.size() == 1 && translators.first().contains('|'))  // legacy
    translators = translators.first().split('|');

  settings.endGroup();
}