set device type

src/app/AppController.cpp

@@ -141,6 +141,25 @@ void AppController::setQuickSave(bool enabled)
     }
 }
 
+QString AppController::deviceType() const
+{
+    return LocalSend::deviceTypeToString(m_settings->deviceType());
+}
+
+void AppController::setDeviceType(const QString& type)
+{
+    LocalSend::DeviceType newType = LocalSend::deviceTypeFromString(type);
+    if (m_settings->deviceType() != newType) {
+        m_settings->setDeviceType(newType);
+        emit deviceTypeChanged();
+        
+        LocalSend::InfoDto info = buildInfoDto();
+        m_server->setLocalInfo(info, m_security->fingerprint());
+        m_discovery->setLocalInfo(info, m_security->fingerprint(), m_settings->port(), 
+                                   m_settings->https() ? LocalSend::ProtocolType::Https : LocalSend::ProtocolType::Http);
+    }
+}
+
 QVariantList AppController::devices() const
 {
     QVariantList result;

src/app/AppController.h

@@ -33,6 +33,7 @@ class AppController : public QObject
     Q_PROPERTY(int currentReceiveFileIndex READ currentReceiveFileIndex NOTIFY receiveProgressChanged)
     Q_PROPERTY(int totalReceiveFiles READ totalReceiveFiles NOTIFY receivingChanged)
     Q_PROPERTY(QString currentReceiveSenderAlias READ currentReceiveSenderAlias NOTIFY receivingChanged)
+    Q_PROPERTY(QString deviceType READ deviceType WRITE setDeviceType NOTIFY deviceTypeChanged)
 
 public:
     explicit AppController(QObject* parent = nullptr);
@@ -72,6 +73,9 @@ public:
     int totalReceiveFiles() const;
     QString currentReceiveSenderAlias() const;
     
+    QString deviceType() const;
+    void setDeviceType(const QString& type);
+    
     Q_INVOKABLE void startDiscovery();
     Q_INVOKABLE void stopDiscovery();
     Q_INVOKABLE void refreshDevices();
@@ -110,6 +114,7 @@ signals:
     void receivePinChanged();
     void receivingChanged();
     void receiveProgressChanged();
+    void deviceTypeChanged();
 
 private slots:
     void onDeviceDiscovered(const LocalSend::Device& device);

src/app/qml/main.qml

@@ -15,6 +15,17 @@ ApplicationWindow {
     property string currentSenderAlias: ""
     property string currentSenderIp: ""
 
+    function getDeviceTypeIcon(deviceType) {
+        switch (deviceType) {
+            case "mobile": return "\u{1F4F1}"
+            case "desktop": return "\u{1F4BB}"
+            case "web": return "\u{1F310}"
+            case "headless": return "\u{1F5A5}"
+            case "server": return "\u{1F4E1}"
+            default: return "\u{1F4BB}"
+        }
+    }
+
     DropArea {
         id: dropArea
         anchors.fill: parent
@@ -587,6 +598,13 @@ ApplicationWindow {
                         
                         RowLayout {
                             anchors.fill: parent
+                            spacing: 12
+                            
+                            Label {
+                                text: getDeviceTypeIcon(modelData.deviceType)
+                                font.pixelSize: 32
+                                Layout.alignment: Qt.AlignVCenter
+                            }
                             
                             Column {
                                 Layout.fillWidth: true
@@ -728,6 +746,33 @@ ApplicationWindow {
                             onClicked: appController.receivePin = ""
                         }
                     }
+                    
+                    Label { text: qsTr("Device Type:") }
+                    ComboBox {
+                        id: deviceTypeCombo
+                        Layout.fillWidth: true
+                        model: [
+                            { text: qsTr("Mobile"), value: "mobile" },
+                            { text: qsTr("Desktop"), value: "desktop" },
+                            { text: qsTr("Web"), value: "web" },
+                            { text: qsTr("Headless"), value: "headless" },
+                            { text: qsTr("Server"), value: "server" }
+                        ]
+                        textRole: "text"
+                        Component.onCompleted: {
+                            for (var i = 0; i < model.length; i++) {
+                                if (model[i].value === appController.deviceType) {
+                                    currentIndex = i
+                                    break
+                                }
+                            }
+                        }
+                        onCurrentIndexChanged: {
+                            if (currentIndex >= 0 && currentIndex < model.length) {
+                                appController.deviceType = model[currentIndex].value
+                            }
+                        }
+                    }
                 }
                 
                 FolderDialog {

src/core/src/Settings.cpp

@@ -1,6 +1,7 @@
 #include "LocalSendCore/Settings.h"
 #include "LocalSendCore/Constants.h"
 #include <QStandardPaths>
+#include <QSysInfo>
 
 namespace LocalSend {
 
@@ -11,6 +12,18 @@ Settings::Settings(QObject* parent)
 {
 }
 
+namespace {
+    DeviceType detectDeviceType() {
+#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
+        return DeviceType::Mobile;
+#elif defined(Q_OS_LINUX) || defined(Q_OS_MACOS) || defined(Q_OS_WINDOWS)
+        return DeviceType::Desktop;
+#else
+        return DeviceType::Headless;
+#endif
+    }
+}
+
 QString Settings::alias() const
 {
     return m_settings.value(QStringLiteral("alias"), 
@@ -108,8 +121,11 @@ void Settings::setDeviceModel(const QString& model)
 
 DeviceType Settings::deviceType() const
 {
-    return deviceTypeFromString(m_settings.value(QStringLiteral("deviceType"), 
+    QVariant stored = m_settings.value(QStringLiteral("deviceType"));
-        QStringLiteral("desktop")).toString());
+    if (stored.isValid()) {
+        return deviceTypeFromString(stored.toString());
+    }
+    return detectDeviceType();
 }
 
 void Settings::setDeviceType(DeviceType type)