WaterLevelSensor/wifihelper.cpp

#include "wifihelper.h"
#include <QCoreApplication>
#include <QGuiApplication>
#ifdef Q_OS_ANDROID
#include <QJniObject>
#endif
#include <QPermissions>

WiFiHelper::WiFiHelper(QObject *parent)
    : QObject{parent}
{

}

QString WiFiHelper::getWifiSsid() {
#ifdef Q_OS_ANDROID
    // Get Android application context in Qt 6
    QJniObject context = QNativeInterface::QAndroidApplication::context();
    if (!context.isValid()) return QString();

    // Get WifiManager service
    QJniObject wifiService = QJniObject::fromString("wifi");
    QJniObject wifiManager = context.callObjectMethod(
        "getSystemService",
        "(Ljava/lang/String;)Ljava/lang/Object;",
        wifiService.object()
        );
    if (!wifiManager.isValid()) return QString();

    // Fetch WifiInfo
    QJniObject wifiInfo = wifiManager.callObjectMethod(
        "getConnectionInfo",
        "()Landroid/net/wifi/WifiInfo;"
        );
    if (!wifiInfo.isValid()) return QString();

    // Get SSID string
    QJniObject ssidJni = wifiInfo.callObjectMethod(
        "getSSID",
        "()Ljava/lang/String;"
        );
    if (!ssidJni.isValid()) return QString();

    QString ssid = ssidJni.toString();

    // Android returns SSIDs wrapped in double quotes (e.g., "\"MyWiFi\"")
    if (ssid.startsWith('"') && ssid.endsWith('"') && ssid.length() > 1) {
        ssid = ssid.mid(1, ssid.length() - 2);
    }

    return ssid;
#endif
    return "";
}

void WiFiHelper::requestPermissionsAndFetch() {
#ifdef Q_OS_ANDROID
    QLocationPermission locationPermission;
    locationPermission.setAccuracy(QLocationPermission::Accuracy::Precise);
    Qt::PermissionStatus status = qApp->checkPermission(locationPermission);

    if (status == Qt::PermissionStatus::Granted) {
        emit ssidRetrieved(getWifiSsid());
    } else {
        qDebug() << "Requesting permission.";
        qApp->requestPermission(locationPermission, this, [this](const QPermission &permission) {
            if (permission.status() == Qt::PermissionStatus::Granted) {
                qDebug() << "Requested permission and got ssid";
                emit ssidRetrieved(getWifiSsid());
            } else {
                qDebug() << "Failed to get WiFi SSID due to denied permission.";
                emit ssidRetrieved("Permission Denied");
            }
        });
    }
#endif
}