feat: Live Emote Updates for 7TV (#4090)

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

src/messages/Emote.hpp

@@ -1,8 +1,10 @@
 #pragma once
 
+#include "common/Atomic.hpp"
 #include "messages/Image.hpp"
 #include "messages/ImageSet.hpp"
 
+#include <boost/optional.hpp>
 #include <functional>
 #include <memory>
 #include <unordered_map>
@@ -15,6 +17,13 @@ struct Emote {
     Tooltip tooltip;
     Url homePage;
     bool zeroWidth;
+    EmoteId id;
+    EmoteAuthor author;
+    /**
+     * If this emote is aliased, this contains
+     * the original (base) name of the emote.
+     */
+    boost::optional<EmoteName> baseName;
 
     // FOURTF: no solution yet, to be refactored later
     const QString &getCopyString() const
@@ -30,6 +39,20 @@ using EmotePtr = std::shared_ptr<const Emote>;
 
 class EmoteMap : public std::unordered_map<EmoteName, EmotePtr>
 {
+public:
+    /**
+     * Finds an emote by it's id with a hint to it's name.
+     *
+     * 1. Searches by name for the emote, checking if the ids match (fast-path).
+     * 2. Searches through the map for an emote with the `emoteID` (slow-path).
+     *
+     * @param emoteNameHint A hint to the name of the searched emote,
+     *                      may be empty.
+     * @param emoteID The emote id to search for.
+     * @return An iterator to the found emote (possibly this->end()).
+     */
+    EmoteMap::const_iterator findEmote(const QString &emoteNameHint,
+                                       const QString &emoteID) const;
 };
 using EmoteIdMap = std::unordered_map<EmoteId, EmotePtr>;
 using WeakEmoteMap = std::unordered_map<EmoteName, std::weak_ptr<const Emote>>;