Chore: Close answered discussions (#4565)

.github/workflows/repo-maintenance.yml

@@ -8,6 +8,7 @@ on:
 permissions:
   issues: write
   pull-requests: write
+  discussions: write
 
 concurrency:
   group: lock
@@ -45,3 +46,54 @@ jobs:
             This pull request has been automatically locked since there
             has not been any recent activity after it was closed.
             Please open a new discussion or issue for related concerns.
+  close-answered-discussions:
+    name: 'Close Answered Discussions'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v6
+        with:
+          script: |
+            const query = `query($owner:String!, $name:String!) {
+              repository(owner:$owner, name:$name){
+                discussions(first:100, answered:true, states:[OPEN]) {
+                  nodes {
+                    id,
+                    number
+                  }
+                }
+              }
+            }`;
+            const variables = {
+              owner: context.repo.owner,
+              name: context.repo.repo,
+            }
+            const result = await github.graphql(query, variables)
+
+            console.log(`Found ${result.repository.discussions.nodes.length} open answered discussions`)
+
+            for (const discussion of result.repository.discussions.nodes) {
+              console.log(`Closing dicussion #${discussion.number} (${discussion.id})`)
+
+              const addCommentMutation = `mutation($discussion:ID!, $body:String!) {
+                addDiscussionComment(input:{discussionId:$discussion, body:$body}) {
+                  clientMutationId
+                }
+              }`;
+              const commentVariables = {
+                discussion: discussion.id,
+                body: 'This discussion has been automatically closed because it was marked as answered.',
+              }
+              await github.graphql(addCommentMutation, commentVariables)
+
+              const closeDiscussionMutation = `mutation($discussion:ID!, $reason:DiscussionCloseReason!) {
+                closeDiscussion(input:{discussionId:$discussion, reason:$reason}) {
+                  clientMutationId
+                }
+              }`;
+              const closeVariables = {
+                discussion: discussion.id,
+                reason: "RESOLVED",
+              }
+              await github.graphql(closeDiscussionMutation, closeVariables)
+
+            }