fix: correct SetGroupDescription to properly handle deletes and updates

group.go

@@ -1052,16 +1052,37 @@ func (cli *Client) SetGroupMemberAddMode(ctx context.Context, jid types.JID, mod
 
 // SetGroupDescription updates the group description.
 func (cli *Client) SetGroupDescription(ctx context.Context, jid types.JID, description string) error {
-	content := waBinary.Node{
-		Tag: "description",
-		Content: []waBinary.Node{
-			{
-				Tag:     "body",
-				Content: []byte(description),
-			},
-		},
+	attrs := waBinary.Attrs{}
+	groupInfo, err := cli.getGroupInfo(ctx, jid, false)
+	if err != nil {
+		return err
 	}
 
-	_, err := cli.sendGroupIQ(ctx, iqSet, jid, content)
+	if description != "" {
+		attrs["id"] = cli.GenerateMessageID()
+	} else {
+		attrs["delete"] = "true"
+	}
+
+	prev := groupInfo.TopicID
+	if prev != "" {
+		attrs["prev"] = prev
+	}
+
+	var contentNodes []waBinary.Node
+    if description != "" {
+        contentNodes = append(contentNodes, waBinary.Node{
+            Tag:     "body",
+            Content: []byte(description),
+        })
+    }
+
+    content := waBinary.Node{
+        Tag:     "description",
+        Attrs:   attrs,
+        Content: contentNodes,
+    }
+
+	_, err = cli.sendGroupIQ(ctx, iqSet, jid, content)
 	return err
-}
+}

proto/waStatusAttributions/WAWebProtobufsStatusAttributions.proto

@@ -0,0 +1,72 @@
+syntax = "proto2";
+package WAWebProtobufsStatusAttributions;
+option go_package = "go.mau.fi/whatsmeow/proto/waStatusAttributions";
+
+message StatusAttribution {
+	enum Type {
+		RESHARE = 0;
+		EXTERNAL_SHARE = 1;
+		MUSIC = 2;
+		STATUS_MENTION = 3;
+		GROUP_STATUS = 4;
+	}
+
+	message ExternalShare {
+		enum Source {
+			UNKNOWN = 0;
+			INSTAGRAM = 1;
+			FACEBOOK = 2;
+			MESSENGER = 3;
+			SPOTIFY = 4;
+			YOUTUBE = 5;
+			PINTEREST = 6;
+		}
+
+		optional string actionURL = 1;
+		optional Source source = 2;
+		optional int32 duration = 3;
+		optional string actionFallbackURL = 4;
+	}
+
+	message StatusReshare {
+		enum Source {
+			UNKNOWN = 0;
+			INTERNAL_RESHARE = 1;
+			MENTION_RESHARE = 2;
+			CHANNEL_RESHARE = 3;
+		}
+
+		message Metadata {
+			optional int32 duration = 1;
+			optional string channelJID = 2;
+			optional int32 channelMessageID = 3;
+			optional bool hasMultipleReshares = 4;
+		}
+
+		optional Source source = 1;
+		optional Metadata metadata = 2;
+	}
+
+	message GroupStatus {
+		optional string authorJID = 1;
+	}
+
+	message Music {
+		optional string authorName = 1;
+		optional string songID = 2;
+		optional string title = 3;
+		optional string author = 4;
+		optional string artistAttribution = 5;
+		optional bool isExplicit = 6;
+	}
+
+	oneof attributionData {
+		StatusReshare statusReshare = 3;
+		ExternalShare externalShare = 4;
+		Music music = 5;
+		GroupStatus groupStatus = 6;
+	}
+
+	optional Type type = 1;
+	optional string actionURL = 2;
+}