feat: add unknown option toasts

modules/ConfigToasts.qml

@@ -18,6 +18,10 @@ Scope {
             Toaster.toast(qsTr("Failed to save config%1").arg(screen ? " for " + screen : ""), error, "settings_alert", Toast.Error);
         }
 
+        function onUnknownOption(key: string, screen: string): void {
+            Toaster.toast(qsTr("Unknown option in%1 config").arg(screen ? " " + screen : ""), key, "question_mark", Toast.Warning);
+        }
+
         target: GlobalConfig
     }
 
@@ -26,6 +30,10 @@ Scope {
             Toaster.toast(qsTr("Failed to parse token config%1").arg(screen ? "for " + screen : ""), error, "settings_alert", Toast.Warning);
         }
 
+        function onUnknownOption(key: string, screen: string): void {
+            Toaster.toast(qsTr("Unknown option in%1 token config").arg(screen ? " " + screen : ""), key, "question_mark", Toast.Warning);
+        }
+
         target: TokenConfig
     }
 }

plugin/src/Caelestia/Config/monitorconfigmanager.cpp

@@ -39,6 +39,7 @@ GlobalConfig* MonitorConfigManager::configForScreen(const QString& screen) {
         connect(overlay.config, &GlobalConfig::saved, global, &GlobalConfig::saved);
         connect(overlay.config, &GlobalConfig::loadFailed, global, &GlobalConfig::loadFailed);
         connect(overlay.config, &GlobalConfig::saveFailed, global, &GlobalConfig::saveFailed);
+        connect(overlay.config, &GlobalConfig::unknownOption, global, &GlobalConfig::unknownOption);
     }
     return overlay.config;
 }
@@ -55,6 +56,7 @@ TokenConfig* MonitorConfigManager::tokensForScreen(const QString& screen) {
         connect(overlay.tokens, &TokenConfig::saved, global, &TokenConfig::saved);
         connect(overlay.tokens, &TokenConfig::loadFailed, global, &TokenConfig::loadFailed);
         connect(overlay.tokens, &TokenConfig::saveFailed, global, &TokenConfig::saveFailed);
+        connect(overlay.tokens, &TokenConfig::unknownOption, global, &TokenConfig::unknownOption);
     }
     return overlay.tokens;
 }

plugin/src/Caelestia/Config/rootconfig.cpp

@@ -4,6 +4,7 @@
 #include <qfile.h>
 #include <qfileinfo.h>
 #include <qjsondocument.h>
+#include <qmetaobject.h>
 #include <qstandardpaths.h>
 
 namespace caelestia::config {
@@ -19,6 +20,35 @@ QString watchRoot() {
 RootConfig::RootConfig(QObject* parent)
     : ConfigObject(parent) {}
 
+QStringList RootConfig::collectUnknownKeys(const ConfigObject* obj, const QJsonObject& json) {
+    QStringList unknown;
+    const auto* meta = obj->metaObject();
+
+    QSet<QString> known;
+    for (int i = meta->propertyOffset(); i < meta->propertyCount(); ++i)
+        known.insert(QString::fromUtf8(meta->property(i).name()));
+
+    for (auto it = json.begin(); it != json.end(); ++it) {
+        if (!known.contains(it.key())) {
+            unknown.append(it.key());
+        } else if (it.value().isObject()) {
+            int idx = meta->indexOfProperty(it.key().toUtf8().constData());
+            if (idx >= 0) {
+                auto prop = meta->property(idx);
+                auto value = prop.read(obj);
+                auto* subObj = value.value<ConfigObject*>();
+                if (subObj) {
+                    const auto subUnknown = collectUnknownKeys(subObj, it.value().toObject());
+                    for (const auto& subKey : subUnknown)
+                        unknown.append(it.key() + QStringLiteral(".") + subKey);
+                }
+            }
+        }
+    }
+
+    return unknown;
+}
+
 void RootConfig::setupFileBackend(const QString& path, const QString& screen) {
     m_filePath = path;
     m_screen = screen;
@@ -157,7 +187,13 @@ std::optional<QString> RootConfig::reloadFromFile() {
     qCDebug(lcConfig) << "Reloading" << metaObject()->className() << "from" << m_filePath;
 
     clearLoadedKeys();
-    loadFromJson(doc.object());
+
+    auto jsonObj = doc.object();
+    const auto unknownKeys = collectUnknownKeys(this, jsonObj);
+    for (const auto& key : unknownKeys)
+        emit unknownOption(key, m_screen);
+
+    loadFromJson(jsonObj);
 
     return QString(); // success
 }

plugin/src/Caelestia/Config/rootconfig.hpp

@@ -31,8 +31,10 @@ signals:
     void loadFailed(const QString& error, const QString& screen);
     void saved(const QString& screen);
     void saveFailed(const QString& error, const QString& screen);
+    void unknownOption(const QString& key, const QString& screen);
 
 private:
+    static QStringList collectUnknownKeys(const ConfigObject* obj, const QJsonObject& json);
     void updateWatch();
     void onWatcherEvent();