pin support

src/app/AppController.h

@@ -23,6 +23,7 @@ class AppController : public QObject
     Q_PROPERTY(double sendProgress READ sendProgress NOTIFY sendProgressChanged)
     Q_PROPERTY(QVariantList pendingFiles READ pendingFiles NOTIFY pendingFilesChanged)
     Q_PROPERTY(bool hasPendingFiles READ hasPendingFiles NOTIFY pendingFilesChanged)
+    Q_PROPERTY(QString receivePin READ receivePin WRITE setReceivePin NOTIFY receivePinChanged)
 
 public:
     explicit AppController(QObject* parent = nullptr);
@@ -49,6 +50,8 @@ public:
     double sendProgress() const;
     QVariantList pendingFiles() const;
     bool hasPendingFiles() const;
+    QString receivePin() const;
+    void setReceivePin(const QString& pin);
     
     Q_INVOKABLE void startDiscovery();
     Q_INVOKABLE void stopDiscovery();
@@ -63,6 +66,7 @@ public:
     Q_INVOKABLE void addFiles(const QStringList& filePaths);
     Q_INVOKABLE void removePendingFile(int index);
     Q_INVOKABLE void clearPendingFiles();
+    Q_INVOKABLE void retryWithPin(const QString& pin);
 
 signals:
     void aliasChanged();
@@ -81,6 +85,8 @@ signals:
     void receiveError(const QString& sessionId, const QString& error);
     void sendCompleted(const QString& sessionId);
     void sendError(const QString& error);
+    void pinRequired(bool firstAttempt);
+    void receivePinChanged();
 
 private slots:
     void onDeviceDiscovered(const LocalSend::Device& device);
@@ -98,6 +104,8 @@ private slots:
     
     void onPrepareUploadResponse(const LocalSend::PrepareUploadResponseDto& response);
     void onPrepareUploadError(const QString& error);
+    void onPrepareUploadPinRequired();
+    void onPrepareUploadTooManyAttempts();
     void onUploadProgress(qint64 sent, qint64 total);
     void onUploadCompleted();
     void onUploadError(const QString& error);
@@ -119,6 +127,7 @@ private:
     QVariantList m_pendingFilesList;
     int m_currentFileIndex = 0;
     double m_sendProgress = 0.0;
+    bool m_pinFirstAttempt = true;
     
     LocalSend::InfoDto buildInfoDto() const;
     QString generateUniqueFilePath(const QString& baseDir, const QString& fileName) const;