#ifndef CLIPBOARDRESULTDIALOG_H
#define CLIPBOARDRESULTDIALOG_H

#include <QClipboard>
#include <QDialog>
#include <QEvent>
#include <QGuiApplication>
#include <QLabel>
#include <QTimer>
#include <QUrl>
#ifndef QT_NO_DEBUG
#include <QDebug>
#endif

// Keep the result window focused while taking ownership of the clipboard.
class ClipboardResultDialog : public QDialog {
public:
  ClipboardResultDialog (const QUrl &url, bool requiresFocus, QWidget *parent = nullptr)
    : QDialog (parent), m_text (url.toString (QUrl::FullyEncoded)),
      m_requiresFocus (requiresFocus), m_status (new QLabel (this)) {
    m_status->setText (QStringLiteral ("Activate this window to copy the short URL."));
    m_status->setWordWrap (true);
  }

  QLabel *copyStatusLabel() const { return m_status; }

  bool copyShortUrl() {
    if (m_requiresFocus && !isActiveWindow())
      return false;
    auto *clipboard = QGuiApplication::clipboard();
    clipboard->setText (m_text, QClipboard::Clipboard);
    const bool copied = clipboard->text (QClipboard::Clipboard) == m_text
        && (!QGuiApplication::platformName().startsWith (QStringLiteral ("wayland"))
            || clipboard->ownsClipboard());
    m_status->setText (copied ? QStringLiteral ("Short URL copied to clipboard.")
                             : QStringLiteral ("Could not copy the short URL. Click OK to retry."));
#ifndef QT_NO_DEBUG
    qDebug() << "[clipboard] short URL write, active:" << isActiveWindow()
             << "owns clipboard:" << clipboard->ownsClipboard() << "verified:" << copied;
#endif
    return copied;
  }

protected:
  void changeEvent (QEvent *event) override {
    QDialog::changeEvent (event);
    if (event->type() == QEvent::ActivationChange && isActiveWindow()) {
      // Let Qt finish processing the focus event and its Wayland input serial.
      QTimer::singleShot (0, this, [this]() {
        if (isActiveWindow())
          copyShortUrl();
      });
    }
  }

private:
  QString m_text;
  bool m_requiresFocus;
  QLabel *m_status;
};

#endif // CLIPBOARDRESULTDIALOG_H