can fetch poly asset list synchronously

interface/src/scripting/GooglePolyScriptingInterface.cpp

@@ -9,13 +9,188 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+#include <QEventLoop>
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QNetworkAccessManager>
+#include <QNetworkReply>
+#include <QNetworkRequest>
+//#include <QScopedPointer>
+#include <QString>
+#include <QUrl>
+
 #include "GooglePolyScriptingInterface.h"
 #include "ScriptEngineLogging.h"
 
-GooglePolyScriptingInterface::GooglePolyScriptingInterface() {
+QString listPolyUrl = "https://poly.googleapis.com/v1/assets?";
+QString getPolyUrl = "https://poly.googleapis.com/v1/assets/model?";
 
+GooglePolyScriptingInterface::GooglePolyScriptingInterface() {
+    // nothing to be implemented
 }
 
 void GooglePolyScriptingInterface::testPrint() {
     qCDebug(scriptengine) << "Google Poly interface exists";
-}
+}
+
+void GooglePolyScriptingInterface::setAPIKey(QString key) {
+    authCode = key;
+}
+
+void GooglePolyScriptingInterface::getAssetList() {
+    authCode = "AIzaSyDamk7Vth52j7aU9JVKn3ungFS0kGJYc8A";
+    //authCode = "broke";
+    QUrl url(listPolyUrl + "key=" + authCode);
+    QByteArray jsonString = getHTTPRequest(url);
+    qCDebug(scriptengine) << "the list: " << jsonString;
+    QJsonObject json = makeJSONObject(&jsonString, true);
+
+}
+
+// FIXME: synchronous = not good code
+QByteArray GooglePolyScriptingInterface::getHTTPRequest(QUrl url) {
+    QNetworkAccessManager manager;
+    QNetworkReply *response = manager.get(QNetworkRequest(url));
+    QEventLoop event;
+    connect(response, SIGNAL(finished()), &event, SLOT(quit()));
+    event.exec();
+
+    return response->readAll();
+    
+}
+
+QJsonObject GooglePolyScriptingInterface::makeJSONObject(QByteArray* response, bool isList) {
+    //QString firstItem = QString::fromUtf8(response->readAll());
+    QJsonDocument doc = QJsonDocument::fromJson(*response);
+    qCDebug(scriptengine) << "json doc is empty: " << doc.isEmpty();
+    QJsonObject obj = doc.object();
+    qCDebug(scriptengine) << "json obj: " << obj;
+    qCDebug(scriptengine) << "json list: " << obj.keys();
+    if (obj.keys().first() == "error") {
+        qCDebug(scriptengine) << "Invalid API key";
+        return obj;
+    }
+    qCDebug(scriptengine) << "total size: " << obj.value("totalSize").toString();
+    qCDebug(scriptengine) << "in assets: " << obj.value("assets");
+    return obj;
+}
+
+/*void GooglePolyScriptingInterface::getAssetList() {
+    authCode = "AIzaSyDamk7Vth52j7aU9JVKn3ungFS0kGJYc8A";
+    QUrl url(listPolyUrl + "key=" + authCode);
+    QByteArray reply = getHTTPRequest(url);
+    qCDebug(scriptengine) << "the list: " << test;
+}
+
+// FIXME: synchronous = not good code
+QByteArray GooglePolyScriptingInterface::getHTTPRequest(QUrl url) {
+    QNetworkAccessManager manager;
+    QNetworkReply *response = manager.get(QNetworkRequest(url));
+    QEventLoop event;
+    connect(response, SIGNAL(finished()), &event, SLOT(quit()));
+    event.exec();
+    return response->readAll();
+}
+
+*/
+
+/* useful for constructing the url?
+
+    QUrl url("http://gdata.youtube.com/feeds/api/standardfeeds/");
+    QString method = "most_popular";
+    url.setPath(QString("%1%2").arg(url.path()).arg(method));
+
+    QMap<QString, QVariant> params;
+    params["alt"] = "json";
+    params["v"] = "2";
+
+    foreach(QString param, params.keys()) {
+        url.addQueryItem(param, params[param].toString());
+    }
+
+*/
+
+/* NONE OF THESE HTTP GET METHODS WORK D:
+https://stackoverflow.com/questions/28267477/getting-a-page-content-with-qt kinda used rn
+
+this correctly returns the asset list but is apparently synchronous and not a good way to do it 
+https://stackoverflow.com/questions/24965972/qt-getting-source-html-code-of-a-web-page-hosted-on-the-internet
+void GooglePolyScriptingInterface::getAssetList() {
+    authCode = "AIzaSyDamk7Vth52j7aU9JVKn3ungFS0kGJYc8A";
+    QUrl url(listPolyUrl + "key=" + authCode);
+    QNetworkAccessManager manager;
+    QNetworkReply *response = manager.get(QNetworkRequest(url));
+    QEventLoop event;
+    connect(response, SIGNAL(finished()), &event, SLOT(quit()));
+    event.exec();
+    QString firstItem = response->readAll();
+    //QJsonArray arr;
+    //QJsonObject jsonObject = QJsonDocument::fromJson(response->readAll()).object();
+    //QString firstItem = jsonObject["assets"].toString();
+    qCDebug(scriptengine) << "first item: " << firstItem;
+    //qCDebug(scriptengine) << "api key: " << authCode;
+    //return arr;
+}
+
+this didn't work either https://stackoverflow.com/a/24966317
+    QScopedPointer<QNetworkAccessManager> manager(new QNetworkAccessManager);
+    QNetworkReply* response = manager->get(QNetworkRequest(url));
+    QObject::connect(manager, &QNetworkAccessManager::finished, [manager, response] {
+    response->deleteLater();
+    manager->deleteLater();
+    if (response->error() != QNetworkReply::NoError) return;
+    QString contentType =
+    response->header(QNetworkRequest::ContentTypeHeader).toString();
+    if (!contentType.contains("charset=utf-8")) {
+    qWarning() << "Content charsets other than utf-8 are not implemented yet.";
+    return;
+    }
+    QString html = QString::fromUtf8(response->readAll());
+    // do something with the data
+    }) && manager.take();
+
+
+or this :( https://stackoverflow.com/questions/39518749/make-get-request-to-web-service-get-json-response-and-update-gui-in-qt
+    qCDebug(scriptengine) << "gonna get assets with " << url;
+    QNetworkAccessManager manager;
+    QNetworkReply* reply = manager.get(QNetworkRequest(url));
+    QObject::connect(&manager, &QNetworkAccessManager::finished,
+                    [reply]{
+        qCDebug(scriptengine) << "boo radley";
+        if (reply->error() != QNetworkReply::NoError) {
+            qCDebug(scriptengine) << "Poly API failed to respond";
+            //manager.clearAccessCache();
+        } else {
+            QJsonObject jsonObject = QJsonDocument::fromJson(reply->readAll()).object();
+            QString firstItem = jsonObject["assets"].toString();
+            qCDebug(scriptengine) << "first item: " << firstItem;
+        }
+        reply->deleteLater();
+    });
+
+or this :(( http://blog.mathieu-leplatre.info/access-a-json-webservice-with-qt-c.html
+    //QJsonArray arr;
+    //QJsonObject jsonObject = QJsonDocument::fromJson(response->readAll()).object();
+    //QString firstItem = jsonObject["assets"].toString();
+    qCDebug(scriptengine) << "first item: " << firstItem;
+    //qCDebug(scriptengine) << "api key: " << authCode;
+    //return arr;
+    QNetworkAccessManager manager;
+    QNetworkReply* response = manager.get(QNetworkRequest(url));
+    QObject::connect(&manager, SIGNAL(finished(QNetworkReply*)), this, SLOT(onResult(QNetworkReply*)));
+
+    return "";
+    }
+
+    void GooglePolyScriptingInterface::onResult(QNetworkReply* reply) {
+    if (reply->error() != QNetworkReply::NoError) {
+    qCDebug(scriptengine) << "Poly API failed to respond";
+    return;
+    }
+    QString firstItem = reply->readAll();
+
+    qCDebug(scriptengine) << "first item: " << firstItem;
+    }
+
+*/

interface/src/scripting/GooglePolyScriptingInterface.h

@@ -22,6 +22,18 @@ public:
 
 public slots:
     void testPrint();
+    void setAPIKey(QString key);
+
+    //QJsonArray GooglePolyScriptingInterface::getAssetList();
+    void getAssetList();
+
+private:
+    QByteArray getHTTPRequest(QUrl url);
+    QJsonObject makeJSONObject(QByteArray* response, bool isList);
+    //void onResult(QNetworkReply* reply);
+
+    QString authCode;
+    
 
 };