custom ffz moderator badges (#827)

src/providers/ffz/FfzModBadge.cpp

@@ -0,0 +1,86 @@
+#include "FfzModBadge.hpp"
+
+#include <QBuffer>
+#include <QImageReader>
+#include <QJsonObject>
+#include <QPainter>
+#include <QString>
+
+#include "common/NetworkRequest.hpp"
+#include "common/Outcome.hpp"
+#include "messages/Emote.hpp"
+
+namespace chatterino {
+
+FfzModBadge::FfzModBadge(const QString &channelName)
+    : channelName_(channelName)
+{
+}
+
+void FfzModBadge::loadCustomModBadge()
+{
+    static QString partialUrl("https://api.frankerfacez.com/v1/_room/");
+
+    QString url = partialUrl + channelName_;
+    NetworkRequest req(url);
+    req.setCaller(QThread::currentThread());
+    req.onSuccess([this](auto result) -> Outcome {
+        auto root = result.parseJson();
+
+        auto modBadgeUrlField =
+            root.value("room").toObject().value("moderator_badge");
+        if (modBadgeUrlField.isNull())
+            return Failure;
+
+        auto badgeUrl = "https:" + modBadgeUrlField.toString();
+        /* doesnt work for some reason
+        auto badgeOverlay =
+            Image::fromUrl({"https:" + modBadgeUrlField.toString()});
+        auto badgeOverlayPixmap = badgeOverlay->pixmap();
+        if (!badgeOverlayPixmap)
+            return Failure;
+        */
+        NetworkRequest getBadge(badgeUrl);
+        getBadge.setCaller(QThread::currentThread());
+        getBadge.onSuccess([this, &badgeUrl](auto result) -> Outcome {
+            auto data = result.getData();
+
+            QBuffer buffer(const_cast<QByteArray *>(&data));
+            buffer.open(QIODevice::ReadOnly);
+            QImageReader reader(&buffer);
+            if (reader.imageCount() == 0)
+                return Failure;
+            auto badgeOverlay = QPixmap::fromImageReader(&reader);
+
+            QPixmap badgePixmap(18, 18);
+            // the default mod badge green color
+            badgePixmap.fill(QColor("#34AE0A"));
+
+            QPainter painter(&badgePixmap);
+            QRectF rect(0, 0, 18, 18);
+            painter.drawPixmap(rect, badgeOverlay, rect);
+
+            auto emote = Emote{{""},
+                               ImageSet{Image::fromPixmap(badgePixmap)},
+                               Tooltip{"Twitch Channel Moderator"},
+                               Url{badgeUrl}};
+
+            this->badge_ = std::make_shared<Emote>(emote);
+
+            return Success;
+        });
+
+        getBadge.execute();
+
+        return Success;
+    });
+
+    req.execute();
+}
+
+EmotePtr FfzModBadge::badge() const
+{
+    return this->badge_;
+}
+
+}  // namespace chatterino