Initial work on allowing extra form fields in image uploader

src/singletons/Settings.hpp

@@ -358,6 +358,9 @@ public:
     QStringSetting imageUploaderLink = {"/external/imageUploader/link", ""};
     QStringSetting imageUploaderDeletionLink = {
         "/external/imageUploader/deletionLink", ""};
+    ChatterinoSetting<std::vector<std::pair<QString, QString>>>
+        imageUploaderExtraFormFields = {
+            "/external/imageUploader/extraFormFields", {}};
 
     /// Misc
     BoolSetting betaUpdates = {"/misc/beta", false};

src/util/NuulsUploader.cpp

@@ -149,6 +149,18 @@ void uploadImageToNuuls(RawImageData imageData, ChannelPtr channel,
     payload->setBoundary(boundary);
     payload->append(part);
 
+    for (const auto &extraFormField :
+         getSettings()->imageUploaderExtraFormFields.getValue())
+    {
+        QHttpPart extraPart;
+        extraPart.setHeader(
+            QNetworkRequest::ContentDispositionHeader,
+            QString("form-data; name=\"%1\"").arg(extraFormField.first));
+        extraPart.setBody(extraFormField.second.toUtf8());
+
+        payload->append(extraPart);
+    }
+
     NetworkRequest(url, NetworkRequestType::Post)
         .header("Content-Type", contentType)
         .headerList(extraHeaders)

src/widgets/settingspages/ExternalToolsPage.cpp

@@ -131,6 +131,48 @@ ExternalToolsPage::ExternalToolsPage()
         groupLayout->addRow(
             "Form field: ",
             this->createLineEdit(getSettings()->imageUploaderFormField));
+        {
+            auto *edit = new QLineEdit(this);
+            auto &setting = getSettings()->imageUploaderExtraFormFields;
+
+            setting.connect(
+                [=](const auto &extraFormFields, auto) {
+                    qDebug() << "setting changed";
+                    QString finalString;
+                    for (const auto &ff : extraFormFields)
+                    {
+                        finalString +=
+                            QString("%1=%2|").arg(ff.first, ff.second);
+                    }
+                    edit->setText(finalString);
+                },
+                this->managedConnections_);
+
+            QObject::connect(
+                edit, &QLineEdit::editingFinished, [edit, &setting]() {
+                    auto newValue = edit->text();
+                    std::vector<std::pair<QString, QString>> finalValue;
+
+                    const auto &parts = newValue.split('|', Qt::SkipEmptyParts);
+                    for (const auto &part : parts)
+                    {
+                        const auto &key = part.section('=', 0, 0);
+                        const auto &value = part.section(
+                            '=', 1, -1, QString::SectionIncludeTrailingSep);
+
+                        if (key.isEmpty() || value.isEmpty())
+                        {
+                            // Both key and value must be set
+                            continue;
+                        }
+                        finalValue.emplace_back(key, value);
+                    }
+
+                    setting = finalValue;
+                });
+
+            groupLayout->addRow("Extra form fields: ", edit);
+        }
         groupLayout->addRow(
             "Extra Headers: ",
             this->createLineEdit(getSettings()->imageUploaderHeaders));