Add /setgame and /settitle (#2534)

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

src/providers/twitch/api/Helix.cpp

@@ -578,6 +578,48 @@ void Helix::unblockUser(QString targetUserId,
         .execute();
 }
 
+void Helix::updateChannel(QString broadcasterId, QString gameId,
+                          QString language, QString title,
+                          std::function<void(NetworkResult)> successCallback,
+                          HelixFailureCallback failureCallback)
+{
+    QUrlQuery urlQuery;
+    auto data = QJsonDocument();
+    auto obj = QJsonObject();
+    if (!gameId.isEmpty())
+    {
+        obj.insert("game_id", gameId);
+    }
+    if (!language.isEmpty())
+    {
+        obj.insert("broadcaster_language", language);
+    }
+    if (!title.isEmpty())
+    {
+        obj.insert("title", title);
+    }
+
+    if (title.isEmpty() && gameId.isEmpty() && language.isEmpty())
+    {
+        qCDebug(chatterinoCommon) << "Tried to update channel with no changes!";
+        return;
+    }
+
+    data.setObject(obj);
+    urlQuery.addQueryItem("broadcaster_id", broadcasterId);
+    this->makeRequest("channels", urlQuery)
+        .type(NetworkRequestType::Patch)
+        .header("Content-Type", "application/json")
+        .payload(data.toJson())
+        .onSuccess([successCallback, failureCallback](auto result) -> Outcome {
+            successCallback(result);
+            return Success;
+        })
+        .onError([failureCallback](NetworkResult result) {
+            failureCallback();
+        })
+        .execute();
+}
 NetworkRequest Helix::makeRequest(QString url, QUrlQuery urlQuery)
 {
     assert(!url.startsWith("/"));

src/providers/twitch/api/Helix.hpp

@@ -296,6 +296,12 @@ public:
                      std::function<void()> successCallback,
                      HelixFailureCallback failureCallback);
 
+    // https://dev.twitch.tv/docs/api/reference#modify-channel-information
+    void updateChannel(QString broadcasterId, QString gameId, QString language,
+                       QString title,
+                       std::function<void(NetworkResult)> successCallback,
+                       HelixFailureCallback failureCallback);
+
     void update(QString clientId, QString oauthToken);
 
     static void initialize();

src/providers/twitch/api/README.md

@@ -104,6 +104,16 @@ URL: https://dev.twitch.tv/docs/api/reference#get-channel-information
   Used in:
   - `TwitchChannel` to refresh stream title
 
+### Update Channel
+
+URL: https://dev.twitch.tv/docs/api/reference#modify-channel-information
+Requires `channel:manage:broadcast` scope
+
+- We implement this in `providers/twitch/api/Helix.cpp updateChannel`
+  Used in:
+  - `/setgame` to update the game in the current channel
+  - `/settitle` to update the title in the current channel
+
 ### Create Stream Marker
 
 URL: https://dev.twitch.tv/docs/api/reference/#create-stream-marker