From e29261fe6f1599eb17bcc7cb04c9de039fb2c726 Mon Sep 17 00:00:00 2001
From: Zeck Li <devformatters@gmail.com>
Date: Sun, 9 Aug 2020 15:17:33 +0800
Subject: [PATCH] fix(cache): invalidate cache after followed or unfollowed a
 tag

---
 src/mutations/user/toggleFollowTag.ts | 9 +++++++++
 src/types/user.ts                     | 2 +-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/mutations/user/toggleFollowTag.ts b/src/mutations/user/toggleFollowTag.ts
index 94b9ef8e0..e279b3bcf 100644
--- a/src/mutations/user/toggleFollowTag.ts
+++ b/src/mutations/user/toggleFollowTag.ts
@@ -1,3 +1,4 @@
+import { CACHE_KEYWORD, NODE_TYPES } from 'common/enums'
 import { AuthenticationError, TagNotFoundError } from 'common/errors'
 import { fromGlobalId } from 'common/utils'
 import { MutationToToggleFollowTagResolver } from 'definitions'
@@ -38,6 +39,14 @@ const resolver: MutationToToggleFollowTagResolver = async (
     await tagService.unfollow({ targetId: tag.id, userId: viewer.id })
   }
 
+  // invalidate extra nodes
+  tag[CACHE_KEYWORD] = [
+    {
+      id: viewer.id,
+      type: NODE_TYPES.user,
+    },
+  ]
+
   return tag
 }
 
diff --git a/src/types/user.ts b/src/types/user.ts
index fbf7080c5..adace5e4e 100644
--- a/src/types/user.ts
+++ b/src/types/user.ts
@@ -42,7 +42,7 @@ export default /* GraphQL */ `
       @authenticate @purgeCache(type: "${NODE_TYPES.user}")
 
     "Follow or unfollow tag."
-    toggleFollowTag(input: ToggleItemInput!): Tag! @authenticate
+    toggleFollowTag(input: ToggleItemInput!): Tag! @authenticate @purgeCache(type: "${NODE_TYPES.tag}")
 
     "Follow or Unfollow current usere."
     toggleFollowUser(input: ToggleItemInput!): User! @authenticate