enable persisting of posted settings to a JSON file

domain-server/resources/web/settings/describe.json

@@ -1,13 +1,11 @@
 {
-  "groups": {
-    "audio": {
-      "label": "Audio",
-      "settings": {
-        "unattenuated-zone": {
-          "label": "Unattenuated Zone",
-          "help": "Boxes for source and listener (corner x, corner y, corner z, size x, size y, size z, corner x, corner y, corner z, size x, size y, size z)",
-          "placeholder": "0,0,0,20,20,20,50,50,50,10,10,10"
-        }
+  "audio": {
+    "label": "Audio",
+    "settings": {
+      "unattenuated-zone": {
+        "label": "Unattenuated Zone",
+        "help": "Boxes for source and listener (corner x, corner y, corner z, size x, size y, size z, corner x, corner y, corner z, size x, size y, size z)",
+        "placeholder": "0,0,0,20,20,20,50,50,50,10,10,10"
       }
     }
   }

domain-server/resources/web/settings/index.shtml

@@ -5,7 +5,7 @@
 <form class="form-horizontal" id="settings-form" role="form">
   
 <script id="template" type="text/x-handlebars-template">
-  {{#each groups}}
+  {{#each .}}
     {{setKey @key}}
     <div class="panel panel-default">
       <div class="panel-heading">

domain-server/src/DomainServer.cpp

@@ -41,7 +41,8 @@ DomainServer::DomainServer(int argc, char* argv[]) :
     _oauthClientID(),
     _hostname(),
     _networkReplyUUIDMap(),
-    _sessionAuthenticationHash()
+    _sessionAuthenticationHash(),
+    _settingsManager()
 {
     setOrganizationName("High Fidelity");
     setOrganizationDomain("highfidelity.io");
@@ -1162,8 +1163,8 @@ bool DomainServer::handleHTTPRequest(HTTPConnection* connection, const QUrl& url
         }
     }
 
-    // didn't process the request, let our HTTPManager handle
-    return false;
+    // didn't process the request, let our DomainServerSettingsManager or HTTPManager handle
+    return _settingsManager.handleHTTPRequest(connection, url);
 }
 
 bool DomainServer::handleHTTPSRequest(HTTPSConnection* connection, const QUrl &url) {

domain-server/src/DomainServer.h

@@ -24,6 +24,7 @@
 #include <HTTPSConnection.h>
 #include <LimitedNodeList.h>
 
+#include "DomainServerSettingsManager.h"
 #include "WalletTransaction.h"
 
 #include "PendingAssignedNodeData.h"
@@ -110,6 +111,8 @@ private:
     QString _hostname;
     QMap<QNetworkReply*, QUuid> _networkReplyUUIDMap;
     QHash<QUuid, bool> _sessionAuthenticationHash;
+    
+    DomainServerSettingsManager _settingsManager;
 };
 
 #endif // hifi_DomainServer_h

domain-server/src/DomainServerSettingsManager.cpp

@@ -9,4 +9,91 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
-#include "DomainServerSettingsManager.h"
+#include <QtCore/QCoreApplication>
+#include <QtCore/QFile>
+#include <QtCore/QJsonObject>
+#include <QtCore/QUrl>
+
+#include <HTTPConnection.h>
+
+#include "DomainServerSettingsManager.h"
+
+const QString SETTINGS_DESCRIPTION_RELATIVE_PATH = "/resources/web/settings/describe.json";
+
+DomainServerSettingsManager::DomainServerSettingsManager() :
+    _descriptionObject(),
+    _settingsMap()
+{
+    // load the description object from the settings description
+    QFile descriptionFile(QCoreApplication::applicationDirPath() + SETTINGS_DESCRIPTION_RELATIVE_PATH);
+    descriptionFile.open(QIODevice::ReadOnly);
+    
+    _descriptionObject = QJsonDocument::fromJson(descriptionFile.readAll()).object();
+    qDebug() << _descriptionObject;
+}
+
+bool DomainServerSettingsManager::handleHTTPRequest(HTTPConnection* connection, const QUrl &url) {
+    if (connection->requestOperation() == QNetworkAccessManager::PostOperation && url.path() == "/settings.json") {
+        // this is a POST operation to change one or more settings
+        QJsonDocument postedDocument = QJsonDocument::fromJson(connection->requestContent());
+        QJsonObject postedObject = postedDocument.object();
+        
+        // we recurse one level deep below each group for the appropriate setting
+        recurseJSONObjectAndOverwriteSettings(postedObject, _settingsMap, _descriptionObject);
+        
+        // now let's look at the settingsMap?
+        qDebug() << QJsonDocument::fromVariant(_settingsMap).toJson();
+        
+        persistToFile();
+        
+        return false;
+    }
+    
+    return false;
+}
+
+const QString DESCRIPTION_SETTINGS_KEY = "settings";
+
+void DomainServerSettingsManager::recurseJSONObjectAndOverwriteSettings(const QJsonObject& postedObject,
+                                                                        QVariantMap& settingsVariant,
+                                                                        QJsonObject descriptionObject) {
+    foreach(const QString& key, postedObject.keys()) {
+
+        QJsonValue rootValue = postedObject[key];
+        
+        // we don't continue if this key is not present in our descriptionObject
+        if (descriptionObject.contains(key)) {
+            if (rootValue.isString()) {
+                // if this is a string then just set it in our settingsVariant
+                settingsVariant[key] = rootValue.toString();
+            } else if (rootValue.isObject()) {
+                
+                QJsonObject nextDescriptionObject = descriptionObject[key].toObject();
+                
+                if (nextDescriptionObject.contains(DESCRIPTION_SETTINGS_KEY)) {
+                    if (!settingsVariant.contains(key)) {
+                        // we don't have a map below this key yet, so set it up now
+                        settingsVariant[key] = QVariantMap();
+                    }
+                    
+                    // there's a JSON Object to explore, so recurse into it
+                    recurseJSONObjectAndOverwriteSettings(rootValue.toObject(),
+                                                          *reinterpret_cast<QVariantMap*>(settingsVariant[key].data()),
+                                                          nextDescriptionObject[DESCRIPTION_SETTINGS_KEY].toObject());
+                }
+            }
+        }
+    }
+}
+
+const QString SETTINGS_JSON_FILE_RELATIVE_PATH = "/resources/config.json";
+
+void DomainServerSettingsManager::persistToFile() {
+    QFile settingsFile(QCoreApplication::applicationDirPath() + SETTINGS_JSON_FILE_RELATIVE_PATH);
+    
+    if (settingsFile.open(QIODevice::WriteOnly)) {
+        settingsFile.write(QJsonDocument::fromVariant(_settingsMap).toJson());
+    } else {
+        qCritical("Could not write to JSON settings file. Unable to persist settings.");
+    }
+}

domain-server/src/DomainServerSettingsManager.h

@@ -14,8 +14,20 @@
 
 #include <QtCore/QJsonDocument>
 
-class DomainServerSettingsManager {
+#include <HTTPManager.h>
+
+class DomainServerSettingsManager : public QObject, HTTPRequestHandler {
+    Q_OBJECT
+public:
+    DomainServerSettingsManager();
+    bool handleHTTPRequest(HTTPConnection* connection, const QUrl& url);
+private:
+    void recurseJSONObjectAndOverwriteSettings(const QJsonObject& postedObject, QVariantMap& settingsVariant,
+                                               QJsonObject descriptionObject);
+    void persistToFile();
     
+    QJsonObject _descriptionObject;
+    QVariantMap _settingsMap;
 };
 
 #endif // hifi_DomainServerSettingsManager_h