Initial attempt to script a plugin

libnymea-core/devices/devicemanagerimplementation.cpp

@@ -23,6 +23,7 @@
 
 #include "devicemanagerimplementation.h"
 #include "translator.h"
+#include "scriptdeviceplugin.h"
 
 #include "loggingcategories.h"
 #include "typeutils.h"
@@ -1104,6 +1105,10 @@ void DeviceManagerImplementation::loadPlugins()
             loadPlugin(pluginIface, metaData);
         }
     }
+
+    ScriptDevicePlugin *plugin = new ScriptDevicePlugin(this);
+    plugin->loadScript("/home/micha/Develop/nymea-plugin-jstest/devicepluginjstest.js");
+    loadPlugin(plugin, plugin->metaData());
 }
 
 void DeviceManagerImplementation::loadPlugin(DevicePlugin *pluginIface, const PluginMetadata &metaData)

libnymea-core/devices/scriptdeviceplugin.cpp

@@ -0,0 +1,84 @@
+#include "scriptdeviceplugin.h"
+
+#include <QQmlEngine>
+#include <QDir>
+#include <QJsonDocument>
+
+#include "loggingcategories.h"
+
+ScriptDevicePlugin::ScriptDevicePlugin(QObject *parent) : DevicePlugin(parent)
+{
+
+}
+
+bool ScriptDevicePlugin::loadScript(const QString &fileName)
+{
+
+    QFileInfo fi(fileName);
+    QString metaDataFileName = fileName + "on";
+
+    QFile metaDataFile(metaDataFileName);
+    if (!metaDataFile.open(QFile::ReadOnly)) {
+        qCWarning(dcDeviceManager()) << "Failed to open plugin metadata at" << metaDataFileName;
+        return false;
+    }
+    QJsonParseError error;
+    QByteArray data = metaDataFile.readAll();
+    QJsonDocument jsonDoc = QJsonDocument::fromJson(data, &error);
+    metaDataFile.close();
+
+    if (error.error != QJsonParseError::NoError) {
+        int errorOffset = error.offset;
+        int newLineIndex = data.indexOf("\n");
+        int lineIndex = 1;
+        while (newLineIndex > 0 && errorOffset > newLineIndex) {
+            data.remove(0, newLineIndex + 2);
+            errorOffset -= (newLineIndex + 2);
+            newLineIndex = data.indexOf("\n");
+            lineIndex++;
+        }
+        if (newLineIndex >= 0) {
+            data = data.left(newLineIndex);
+        }
+        QString spacer;
+        for (int i = 0; i < errorOffset; i++) {
+            spacer += ' ';
+        }
+        QDebug dbg = qWarning(dcDeviceManager()).nospace().noquote();
+        dbg << metaDataFileName << ":" << lineIndex << ":" << errorOffset + 2 << ": error: JSON parsing failed: " << error.errorString() << ": " << data.trimmed() << endl;
+        dbg << data << endl;
+        dbg << spacer << "^";
+        return false;
+    }
+    m_metaData = QJsonObject::fromVariantMap(jsonDoc.toVariant().toMap());
+
+
+    QFile scriptFile(fileName);
+    if (!scriptFile.open(QIODevice::ReadOnly)) {
+        return false;
+    }
+
+    m_engine = new QJSEngine(this);
+    m_engine->installExtensions(QJSEngine::ConsoleExtension);
+
+    QTextStream stream(&scriptFile);
+    QString contents = stream.readAll();
+    scriptFile.close();
+    QJSValue result = m_engine->evaluate(contents, fileName);
+    if (result.isError()) {
+        qCWarning(dcDeviceManager()) << "Error evaluating script" << fileName << result.toString();
+        return false;
+    }
+
+    return true;
+}
+
+QJsonObject ScriptDevicePlugin::metaData() const
+{
+    return m_metaData;
+}
+
+void ScriptDevicePlugin::init()
+{
+
+}

libnymea-core/devices/scriptdeviceplugin.h

@@ -0,0 +1,28 @@
+#ifndef SCRIPTDEVICEPLUGIN_H
+#define SCRIPTDEVICEPLUGIN_H
+
+#include "devices/deviceplugin.h"
+
+#include <QJSEngine>
+#include <QJsonObject>
+
+class ScriptDevicePlugin : public DevicePlugin
+{
+    Q_OBJECT
+public:
+    explicit ScriptDevicePlugin(QObject *parent = nullptr);
+
+    bool loadScript(const QString &fileName);
+    QJsonObject metaData() const;
+
+    void init() override;
+signals:
+
+public slots:
+
+private:
+    QJSEngine *m_engine = nullptr;
+    QJsonObject m_metaData;
+};
+
+#endif // SCRIPTDEVICEPLUGIN_H

libnymea-core/libnymea-core.pro

@@ -3,7 +3,7 @@ TARGET = nymea-core
 
 include(../nymea.pri)
 
-QT += sql
+QT += sql qml
 INCLUDEPATH += $$top_srcdir/libnymea
 LIBS += -L$$top_builddir/libnymea/ -lnymea -lssl -lcrypto -lnymea-mqtt
 
@@ -17,6 +17,7 @@ RESOURCES += $$top_srcdir/icons.qrc \
 
 HEADERS += nymeacore.h \
     devices/devicemanagerimplementation.h \
+    devices/scriptdeviceplugin.h \
     devices/translator.h \
     experiences/experiencemanager.h \
     jsonrpc/jsonrpcserverimplementation.h \
@@ -91,6 +92,7 @@ HEADERS += nymeacore.h \
 
 SOURCES += nymeacore.cpp \
     devices/devicemanagerimplementation.cpp \
+    devices/scriptdeviceplugin.cpp \
     devices/translator.cpp \
     experiences/experiencemanager.cpp \
     jsonrpc/jsonrpcserverimplementation.cpp \