From 2a9587d4ff38fb285b8cf1f0c498f0b6797286b7 Mon Sep 17 00:00:00 2001
From: Michael Telatynski <7t3chguy@gmail.com>
Date: Mon, 6 Jun 2022 10:26:29 +0100
Subject: [PATCH] Clean up closed issues (duplicates and rageshakes) (#22451)

---
 .github/workflows/issue_closed.yml | 148 +++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 .github/workflows/issue_closed.yml

diff --git a/.github/workflows/issue_closed.yml b/.github/workflows/issue_closed.yml
new file mode 100644
index 0000000000..9bc4e76a4a
--- /dev/null
+++ b/.github/workflows/issue_closed.yml
@@ -0,0 +1,148 @@
+# For duplicate issues, ensure the close type is right (not planned), update it if not
+# For all closed (completed) issues, cascade the closure onto any referenced rageshakes
+# For all closed (not planned) issues, comment on rageshakes to move them into the canonical issue if one exists
+on:
+  issues:
+    types: [ closed ]
+jobs:
+  tidy:
+    name: Tidy closed issues
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v5
+        with:
+          # PAT needed as the GITHUB_TOKEN won't be able to see cross-references from other orgs (matrix-org)
+          github-token: ${{ secrets.ELEMENT_BOT_TOKEN }}
+          script: |
+            const variables = {
+              owner: context.repo.owner,
+              name: context.repo.repo,
+              number: context.issue.number,
+            };
+
+            const query = `query($owner:String!, $name:String!, $number:Int!) {
+              repository(owner: $owner, name: $name) {
+                issue(number: $number) {
+                  stateReason,
+                  timelineItems(first: 100, itemTypes: [MARKED_AS_DUPLICATE_EVENT, UNMARKED_AS_DUPLICATE_EVENT, CROSS_REFERENCED_EVENT]) {
+                    edges {
+                      node {
+                        __typename
+                        ... on MarkedAsDuplicateEvent {
+                          canonical {
+                            ... on Issue {
+                              repository {
+                                nameWithOwner
+                              }
+                              number
+                            }
+                            ... on PullRequest {
+                              repository {
+                                nameWithOwner
+                              }
+                              number
+                            }
+                          }
+                        }
+                        ... on UnmarkedAsDuplicateEvent {
+                          canonical {
+                            ... on Issue {
+                              repository {
+                                nameWithOwner
+                              }
+                              number
+                            }
+                            ... on PullRequest {
+                              repository {
+                                nameWithOwner
+                              }
+                              number
+                            }
+                          }
+                        }
+                        ... on CrossReferencedEvent {
+                          source {
+                            ... on Issue {
+                              repository {
+                                nameWithOwner
+                              }
+                              number
+                            }
+                            ... on PullRequest {
+                              repository {
+                                nameWithOwner
+                              }
+                              number
+                            }
+                          }
+                        }
+                      }
+                    }
+                  }
+                }
+              }
+            }`;
+
+            const result = await github.graphql(query, variables);
+            const { stateReason, timelineItems: { edges } } = result.repository.issue;
+
+            const RAGESHAKE_OWNER = "matrix-org";
+            const RAGESHAKE_REPO = "element-web-rageshakes";
+            const rageshakes = new Set();
+            const duplicateOf = new Set();
+
+            console.log("Edges: ", JSON.stringify(edges));
+
+            for (const { node } of edges) {
+              switch(node.__typename) {
+                case "MarkedAsDuplicateEvent":
+                  duplicateOf.add(node.canonical.repository.nameWithOwner + "#" + node.canonical.number);
+                  break;
+                case "UnmarkedAsDuplicateEvent":
+                  duplicateOf.remove(node.canonical.repository.nameWithOwner + "#" + node.canonical.number);
+                  break;
+                case "CrossReferencedEvent":
+                  if (node.source.repository.nameWithOwner === (RAGESHAKE_OWNER + "/" + RAGESHAKE_REPO)) {
+                    rageshakes.add(node.source.number);
+                  }
+                  break;
+              }
+            }
+
+            console.log("Duplicate of: ", duplicateOf);
+            console.log("Found rageshakes: ", rageshakes);
+
+            if (duplicateOf.size) {
+              const body = Array.from(duplicateOf).join("\n");
+
+              // Comment on all rageshakes to create relationship to the issue this was closed as duplicate of
+              for (const rageshake of rageshakes) {
+                github.rest.issues.createComment({
+                  owner: RAGESHAKE_OWNER,
+                  repo: RAGESHAKE_REPO,
+                  issue_number: rageshake,
+                  body,
+                });
+              }
+
+              // Duplicate was closed with wrong reason, fix it
+              if (stateReason === "COMPLETED") {
+                await github.graphql(`mutation($id:ID!) {
+                  closeIssue(input: { issueId:$id, stateReason:NOT_PLANNED }) {
+                    clientMutationId
+                  }
+                }`, {
+                  id: context.payload.issue.node_id,
+                });
+              }
+            } else {
+              // This issue was closed, close all related rageshakes
+              for (const rageshake of rageshakes) {
+                github.rest.issues.update({
+                  owner: RAGESHAKE_OWNER,
+                  repo: RAGESHAKE_REPO,
+                  issue_number: rageshake,
+                  state: "closed",
+                });
+              }
+            }