Improved error messaging for Update Channel API

CHANGELOG.md

@@ -9,6 +9,7 @@
 - Minor: Added `flags.action` filter variable, allowing you to filter on `/me` messages. (#5397)
 - Minor: The size of the emote popup is now saved. (#5415)
 - Minor: Added the ability to duplicate tabs. (#5277)
+- Minor: Improved error messages for channel update commands. (#5429)
 - Minor: Moderators can now see when users are warned. (#5441)
 - Bugfix: Fixed tab move animation occasionally failing to start after closing a tab. (#5426)
 - Bugfix: If a network request errors with 200 OK, Qt's error code is now reported instead of the HTTP status. (#5378)

mocks/include/mocks/Helix.hpp

@@ -119,12 +119,12 @@ class Helix : public IHelix
                  HelixFailureCallback failureCallback),
                 (override));
 
-    MOCK_METHOD(void, updateChannel,
-                (QString broadcasterId, QString gameId, QString language,
-                 QString title,
-                 std::function<void(NetworkResult)> successCallback,
-                 HelixFailureCallback failureCallback),
-                (override));
+    MOCK_METHOD(
+        void, updateChannel,
+        (QString broadcasterId, QString gameId, QString language, QString title,
+         std::function<void(NetworkResult)> successCallback,
+         (FailureCallback<HelixUpdateChannelError, QString> failureCallback)),
+        (override));
 
     MOCK_METHOD(void, manageAutoModMessages,
                 (QString userID, QString msgID, QString action,

src/controllers/commands/builtin/twitch/UpdateChannel.cpp

@@ -7,6 +7,58 @@
 #include "providers/twitch/api/Helix.hpp"
 #include "providers/twitch/TwitchChannel.hpp"
 
+namespace {
+
+using namespace chatterino;
+
+QString formatUpdateChannelError(const char *updateType,
+                                 HelixUpdateChannelError error,
+                                 const QString &message)
+{
+    using Error = HelixUpdateChannelError;
+
+    QString errorMessage = QString("Failed to set %1 - ").arg(updateType);
+
+    switch (error)
+    {
+        case Error::UserMissingScope: {
+            errorMessage += "Missing required scope. "
+                            "Re-login with your "
+                            "account and try again.";
+        }
+        break;
+
+        case Error::UserNotAuthorized: {
+            errorMessage += QString("You must be the broadcaster "
+                                    "to set the %1.")
+                                .arg(updateType);
+        }
+        break;
+
+        case Error::Ratelimited: {
+            errorMessage += "You are being ratelimited by Twitch. Try "
+                            "again in a few seconds.";
+        }
+        break;
+
+        case Error::Forwarded: {
+            errorMessage += message;
+        }
+        break;
+
+        case Error::Unknown:
+        default: {
+            errorMessage +=
+                QString("An unknown error has occurred (%1).").arg(message);
+        }
+        break;
+    }
+
+    return errorMessage;
+}
+
+}  // namespace
+
 namespace chatterino::commands {
 
 QString setTitle(const CommandContext &ctx)
@@ -30,8 +82,8 @@ QString setTitle(const CommandContext &ctx)
         return "";
     }
 
-    auto status = ctx.twitchChannel->accessStreamStatus();
     auto title = ctx.words.mid(1).join(" ");
+
     getHelix()->updateChannel(
         ctx.twitchChannel->roomId(), "", "", title,
         [channel{ctx.channel}, title](const auto &result) {
@@ -40,10 +92,10 @@ QString setTitle(const CommandContext &ctx)
             channel->addMessage(
                 makeSystemMessage(QString("Updated title to %1").arg(title)));
         },
-        [channel{ctx.channel}] {
-            channel->addMessage(
-                makeSystemMessage("Title update failed! Are you "
-                                  "missing the required scope?"));
+        [channel{ctx.channel}](auto error, auto message) {
+            auto errorMessage =
+                formatUpdateChannelError("title", error, message);
+            channel->addMessage(makeSystemMessage(errorMessage));
         });
 
     return "";
@@ -105,10 +157,10 @@ QString setGame(const CommandContext &ctx)
                     channel->addMessage(makeSystemMessage(
                         QString("Updated game to %1").arg(matchedGame.name)));
                 },
-                [channel] {
-                    channel->addMessage(
-                        makeSystemMessage("Game update failed! Are you "
-                                          "missing the required scope?"));
+                [channel](auto error, auto message) {
+                    auto errorMessage =
+                        formatUpdateChannelError("game", error, message);
+                    channel->addMessage(makeSystemMessage(errorMessage));
                 });
         },
         [channel{ctx.channel}] {

src/providers/twitch/api/Helix.cpp

@@ -613,11 +613,13 @@ void Helix::unblockUser(QString targetUserId, const QObject *caller,
         .execute();
 }
 
-void Helix::updateChannel(QString broadcasterId, QString gameId,
-                          QString language, QString title,
-                          std::function<void(NetworkResult)> successCallback,
-                          HelixFailureCallback failureCallback)
+void Helix::updateChannel(
+    QString broadcasterId, QString gameId, QString language, QString title,
+    std::function<void(NetworkResult)> successCallback,
+    FailureCallback<HelixUpdateChannelError, QString> failureCallback)
 {
+    using Error = HelixUpdateChannelError;
+
     QUrlQuery urlQuery;
     auto obj = QJsonObject();
     if (!gameId.isEmpty())
@@ -646,7 +648,61 @@ void Helix::updateChannel(QString broadcasterId, QString gameId,
             successCallback(result);
         })
         .onError([failureCallback](NetworkResult result) {
-            failureCallback();
+            if (!result.status())
+            {
+                failureCallback(Error::Unknown, result.formatError());
+                return;
+            }
+
+            auto obj = result.parseJson();
+            auto message = obj.value("message").toString();
+
+            switch (*result.status())
+            {
+                case 401: {
+                    if (message.startsWith("Missing scope",
+                                           Qt::CaseInsensitive))
+                    {
+                        failureCallback(Error::UserMissingScope, message);
+                    }
+                    else if (message.compare(
+                                 "The ID in broadcaster_id must match the user "
+                                 "ID found in the request's OAuth token.",
+                                 Qt::CaseInsensitive) == 0)
+                    {
+                        failureCallback(Error::UserNotAuthorized, message);
+                    }
+                    else
+                    {
+                        failureCallback(Error::Forwarded, message);
+                    }
+                }
+                break;
+
+                case 400:
+                case 403: {
+                    failureCallback(Error::Forwarded, message);
+                }
+                break;
+
+                case 429: {
+                    failureCallback(Error::Ratelimited, message);
+                }
+                break;
+
+                case 500: {
+                    failureCallback(Error::Unknown, message);
+                }
+                break;
+
+                default: {
+                    qCDebug(chatterinoTwitch)
+                        << "Helix update channel, unhandled error data:"
+                        << result.formatError() << result.getData() << obj;
+                    failureCallback(Error::Unknown, message);
+                }
+                break;
+            }
         })
         .execute();
 }

src/providers/twitch/api/Helix.hpp

@@ -595,6 +595,16 @@ enum class HelixUpdateChatSettingsError {  // update chat settings
     Forwarded,
 };  // update chat settings
 
+enum class HelixUpdateChannelError {  // /settitle, /setgame
+    Unknown,
+    UserMissingScope,
+    UserNotAuthorized,
+    Ratelimited,
+
+    // The error message is forwarded directly from the Twitch API
+    Forwarded,
+};  // /settitle, /setgame
+
 enum class HelixBanUserError {  // /timeout, /ban
     Unknown,
     UserMissingScope,
@@ -862,7 +872,7 @@ class IHelix
     virtual void updateChannel(
         QString broadcasterId, QString gameId, QString language, QString title,
         std::function<void(NetworkResult)> successCallback,
-        HelixFailureCallback failureCallback) = 0;
+        FailureCallback<HelixUpdateChannelError, QString> failureCallback) = 0;
 
     // https://dev.twitch.tv/docs/api/reference#manage-held-automod-messages
     virtual void manageAutoModMessages(
@@ -1183,7 +1193,8 @@ class Helix final : public IHelix
     void updateChannel(QString broadcasterId, QString gameId, QString language,
                        QString title,
                        std::function<void(NetworkResult)> successCallback,
-                       HelixFailureCallback failureCallback) final;
+                       FailureCallback<HelixUpdateChannelError, QString>
+                           failureCallback) final;
 
     // https://dev.twitch.tv/docs/api/reference#manage-held-automod-messages
     void manageAutoModMessages(