Added PR workflow

.github/workflows/generate-pr-description.yml

@@ -2,10 +2,10 @@ name: Auto PR Description
 
 on:
   pull_request:
-    types: [opened]
+    types: [opened, edited]
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
   cancel-in-progress: true
 
 jobs:
@@ -15,6 +15,7 @@ jobs:
     permissions:
       contents: read
       pull-requests: write
+      issues: write
     steps:
       - name: Checkout code
         uses: actions/[email protected]
@@ -30,12 +31,39 @@ jobs:
           source $HOME/.cargo/env
           uv pip install --system requests openai
 
+      - name: Check for previous successful run
+        id: check_comment
+        run: |
+          PR_NUMBER="${{ github.event.pull_request.number }}"
+          COMMENT=$(gh api -X GET "/repos/${{ github.repository }}/issues/${PR_NUMBER}/comments" | jq '.[] | select(.body | contains("Auto PR description generated successfully")) | .id')
+          if [ -n "$COMMENT" ]; then
+            echo "Workflow has already run successfully for this PR."
+            echo "skip=true" >> $GITHUB_OUTPUT
+          else
+            echo "skip=false" >> $GITHUB_OUTPUT
+          fi
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Wait for potential edits
+        if: steps.check_comment.outputs.skip == 'false'
+        run: sleep 300  # Wait for 5 minutes
+
       - name: Generate PR description
+        if: steps.check_comment.outputs.skip == 'false'
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           OPENAI_API_KEY: ${{ secrets.OPENAI_API_KEY }}
         run: python scripts/generate_pr_description.py
 
+      - name: Add success comment
+        if: steps.check_comment.outputs.skip == 'false'
+        run: |
+          PR_NUMBER="${{ github.event.pull_request.number }}"
+          gh issue comment ${PR_NUMBER} --body "Auto PR description generated successfully"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
       - name: Check for errors
         if: failure()
         run: |

scripts/generate_pr_description.py

@@ -85,8 +85,10 @@ def generate_pr_description():
         data = {'body': updated_description}
         requests.patch(api_url, json=data, headers=headers)
         print(f"Updated PR description with generated content")
+        return True
     else:
         print("PR already has a non-default description. No action taken.")
+        return False
 
 if __name__ == "__main__":
-    generate_pr_description()
+    generate_pr_description()