From c7c4dbeed6198f23ddaddf755856737918f6a856 Mon Sep 17 00:00:00 2001
From: Daniel Naab <dan@crushingpennies.com>
Date: Tue, 18 Jun 2024 22:56:01 -0500
Subject: [PATCH] Lookup prior comment

---
 .github/workflows/_terraform-plan-pr-comment.yml | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/_terraform-plan-pr-comment.yml b/.github/workflows/_terraform-plan-pr-comment.yml
index 6be4d482..eae92f8a 100644
--- a/.github/workflows/_terraform-plan-pr-comment.yml
+++ b/.github/workflows/_terraform-plan-pr-comment.yml
@@ -79,15 +79,25 @@ jobs:
           echo "::set-output name=stdout::$output"
         working-directory: infra
 
+      - name: Find Comment
+        uses: peter-evans/find-comment@v3
+        id: find_comment
+        with:
+          issue-number: ${{ github.event.pull_request.number }}
+          comment-author: 'github-actions[bot]'
+          body-includes: '<!-- terraform-plan-comment -->'
+
       - name: Create or update PR comment with Terraform plan
         uses: peter-evans/create-or-update-comment@v4
         with:
+          comment-id: ${{ steps.find_comment.outputs.comment-id }}
+          issue-number: ${{ github.event.pull_request.number }}
           token: ${{ secrets.GITHUB_TOKEN }}
           repository: ${{ github.repository }}
-          issue-number: ${{ github.event.pull_request.number }}
           body: |
             <!-- terraform-plan-comment -->
             **Terraform Plan**
             ```terraform
             ${{ steps.show_plan.outputs.stdout }}
             ```
+          edit-mode: replace