feat: show BTTV Pro badges (#6625)

Reviewed-by: Rasmus Karlsson <rasmus.karlsson@pajlada.com>

src/util/BadgeRegistry.cpp

@@ -0,0 +1,68 @@
+#include "util/BadgeRegistry.hpp"
+
+#include "messages/Emote.hpp"
+
+#include <QJsonArray>
+#include <QUrl>
+#include <QUrlQuery>
+
+namespace chatterino {
+
+std::optional<EmotePtr> BadgeRegistry::getBadge(const UserId &id) const
+{
+    std::shared_lock lock(this->mutex_);
+
+    auto it = this->badgeMap_.find(id.string);
+    if (it != this->badgeMap_.end())
+    {
+        return it->second;
+    }
+    return std::nullopt;
+}
+
+void BadgeRegistry::assignBadgeToUser(const QString &badgeID,
+                                      const UserId &userID)
+{
+    const std::unique_lock lock(this->mutex_);
+
+    const auto badgeIt = this->knownBadges_.find(badgeID);
+    if (badgeIt != this->knownBadges_.end())
+    {
+        this->badgeMap_[userID.string] = badgeIt->second;
+    }
+}
+
+void BadgeRegistry::clearBadgeFromUser(const QString &badgeID,
+                                       const UserId &userID)
+{
+    const std::unique_lock lock(this->mutex_);
+
+    const auto it = this->badgeMap_.find(userID.string);
+    if (it != this->badgeMap_.end() && it->second->id.string == badgeID)
+    {
+        this->badgeMap_.erase(userID.string);
+    }
+}
+
+QString BadgeRegistry::registerBadge(const QJsonObject &badgeJson)
+{
+    const auto badgeID = this->idForBadge(badgeJson);
+
+    const std::unique_lock lock(this->mutex_);
+
+    if (this->knownBadges_.contains(badgeID))
+    {
+        return badgeID;
+    }
+
+    auto emote = this->createBadge(badgeID, badgeJson);
+    if (!emote)
+    {
+        return badgeID;
+    }
+
+    this->knownBadges_[badgeID] = std::move(emote);
+    return badgeID;
+}
+
+}  // namespace chatterino