fix: #8982, copy color on tag rename, dont copy if target exists

refresh page on tag rename

public/language/en-GB/admin/manage/tags.json

@@ -14,5 +14,6 @@
 
 	"alerts.editing": "Editing tag(s)",
 	"alerts.confirm-delete": "Do you want to delete the selected tags?",
-	"alerts.update-success": "Tag Updated!"
+	"alerts.update-success": "Tag Updated!",
+	"reset-colors": "Reset colors"
 }

public/src/admin/manage/tags.js

@@ -159,6 +159,7 @@ define('admin/manage/tags', [
 									return app.alertError(err.message);
 								}
 								app.alertSuccess('[[admin/manage/tags:alerts.update-success]]');
+								ajaxify.refresh();
 							});
 						},
 					},

src/topics/tags.js

@@ -90,6 +90,15 @@ module.exports = function (Topics) {
 		}
 		newTagName = utils.cleanUpTag(newTagName, meta.config.maximumTagLength);
 		await Topics.createEmptyTag(newTagName);
+		const targetExists = await db.isSortedSetMember('tags:topic:count', newTagName);
+		const tagData = await db.getObject('tag:' + tag);
+		if (tagData && !targetExists) {
+			await db.setObject('tag:' + newTagName, {
+				color: tagData.color,
+				bgColor: tagData.bgColor,
+			});
+		}
+
 		await batch.processSortedSet('tag:' + tag + ':topics', async function (tids) {
 			const scores = await db.sortedSetScores('tag:' + tag + ':topics', tids);
 			await db.sortedSetAdd('tag:' + newTagName + ':topics', scores, tids);