// For license of this file, see <project-root-folder>/LICENSE.md.

#include "gui/dialogs/formbackupdatabasesettings.h"

#include "exceptions/applicationexception.h"
#include "gui/guiutilities.h"
#include "miscellaneous/application.h"
#include "miscellaneous/iconfactory.h"
#include "miscellaneous/settings.h"

#include <QCheckBox>
#include <QDateTime>
#include <QDialogButtonBox>
#include <QFileDialog>
#include <QPushButton>

FormBackupDatabaseSettings::FormBackupDatabaseSettings(QWidget* parent)
  : QDialog(parent), m_ui(new Ui::FormBackupDatabaseSettings) {
  m_ui->setupUi(this);

  setObjectName(QSL("form_backup_db_set"));

  m_ui->m_txtBackupName->lineEdit()->setPlaceholderText(tr("Common name for backup files"));

  GuiUtilities::applyDialogProperties(*this, qApp->icons()->fromTheme(QSL("document-export")));

  connect(m_ui->m_checkBackupDatabase, &QCheckBox::toggled, this, &FormBackupDatabaseSettings::checkOkButton);
  connect(m_ui->m_checkBackupSettings, &QCheckBox::toggled, this, &FormBackupDatabaseSettings::checkOkButton);
  connect(m_ui->m_buttonBox->button(QDialogButtonBox::StandardButton::Ok),
          &QPushButton::clicked,
          this,
          &FormBackupDatabaseSettings::performBackup);
  connect(m_ui->m_txtBackupName->lineEdit(),
          &BaseLineEdit::textChanged,
          this,
          &FormBackupDatabaseSettings::checkBackupNames);
  connect(m_ui->m_txtBackupName->lineEdit(),
          &BaseLineEdit::textChanged,
          this,
          &FormBackupDatabaseSettings::checkOkButton);
  connect(m_ui->m_btnSelectFolder, &QPushButton::clicked, this, &FormBackupDatabaseSettings::selectFolderInitial);
  selectFolder(qApp->documentsFolder());
  m_ui->m_txtBackupName->lineEdit()->setText(QSL(APP_LOW_NAME) + QL1S("_") +
                                             QDateTime::currentDateTime().toString(QSL("yyyyMMddHHmm")));
  m_ui->m_lblResult->setStatus(WidgetWithStatus::StatusType::Warning,
                               tr("No operation executed yet."),
                               tr("No operation executed yet."));

  if (qApp->database()->activeDatabaseDriver() != DatabaseDriver::DriverType::SQLite) {
    m_ui->m_checkBackupDatabase->setDisabled(true);
  }

  GuiUtilities::restoreState(this, qApp->settings()->value(GROUP(GUI), objectName(), QByteArray()).toByteArray());
}

FormBackupDatabaseSettings::~FormBackupDatabaseSettings() {
  qDebugNN << LOGSEC_GUI << "Destroying FormBackupDatabaseSettings instance.";
}

void FormBackupDatabaseSettings::performBackup() {
  try {
    qApp->backupDatabaseSettings(m_ui->m_checkBackupDatabase->isChecked(),
                                 m_ui->m_checkBackupSettings->isChecked(),
                                 m_ui->m_lblSelectFolder->label()->text(),
                                 m_ui->m_txtBackupName->lineEdit()->text());
    m_ui->m_lblResult->setStatus(WidgetWithStatus::StatusType::Ok,
                                 tr("Backup was created successfully and stored in target directory."),
                                 tr("Backup was created successfully."));
  }
  catch (const ApplicationException& ex) {
    m_ui->m_lblResult->setStatus(WidgetWithStatus::StatusType::Error, ex.message(), tr("Backup failed."));
  }
}

void FormBackupDatabaseSettings::selectFolderInitial() {
  selectFolder();
}

void FormBackupDatabaseSettings::selectFolder(QString path) {
  if (path.isEmpty()) {
    path = QFileDialog::getExistingDirectory(this,
                                             tr("Select destination directory"),
                                             m_ui->m_lblSelectFolder->label()->text());
  }

  if (!path.isEmpty()) {
    m_ui->m_lblSelectFolder->setStatus(WidgetWithStatus::StatusType::Ok,
                                       QDir::toNativeSeparators(path),
                                       tr("Good destination directory is specified."));
  }
}

void FormBackupDatabaseSettings::checkBackupNames(const QString& name) {
  if (name.simplified().isEmpty()) {
    m_ui->m_txtBackupName->setStatus(WidgetWithStatus::StatusType::Error, tr("Backup name cannot be empty."));
  }
  else {
    m_ui->m_txtBackupName->setStatus(WidgetWithStatus::StatusType::Ok, tr("Backup name looks okay."));
  }
}

void FormBackupDatabaseSettings::checkOkButton() {
  m_ui->m_buttonBox->button(QDialogButtonBox::StandardButton::Ok)
    ->setDisabled(m_ui->m_txtBackupName->lineEdit()->text().simplified().isEmpty() ||
                  m_ui->m_lblSelectFolder->label()->text().simplified().isEmpty() ||
                  (!m_ui->m_checkBackupDatabase->isChecked() && !m_ui->m_checkBackupSettings->isChecked()));
}

void FormBackupDatabaseSettings::hideEvent(QHideEvent* event) {
  QByteArray state = GuiUtilities::saveState(this);

  qApp->settings()->setValue(GROUP(GUI), objectName(), state);
  QDialog::hideEvent(event);
}