Create action.yml

.github/actions/get-pr-number/action.yml

@@ -0,0 +1,56 @@
+name: Get PR Number
+description: Get PR number for merge queues and squash merges
+branding:
+  icon: package
+  color: blue
+
+inputs:
+  token:
+    description: Specify token (GH or PAT), instead of inheriting one from the calling workflow
+    default: ${{ github.token }}
+
+outputs:
+  pr:
+    description: "Associated pull request number"
+    value: ${{ steps.vars.outputs.pr }}
+
+runs:
+  using: composite
+  steps:
+    - id: vars
+      shell: bash
+      run: |
+        # Get PR number based on the event type
+        if [ "${{ github.event_name }}" == 'pull_request' ]; then
+          echo "Event type: pull request"
+          pr=${{ github.event.number }}
+        elif [ "${{ github.event_name }}" == 'merge_group' ]; then
+          echo "Event type: merge queue"
+          pr=$(echo ${{ github.event.merge_group.head_ref }} | grep -Eo "queue/main/pr-[0-9]+" | cut -d '-' -f2)
+        elif [ "${{ github.event_name }}" == 'push' ]; then
+          echo "Event type: push"
+          pr=$(\
+            curl -sL -H "Accept: application/vnd.github+json" -H "Authorization: Bearer ${{ inputs.token }}" \
+              -H "X-GitHub-Api-Version: 2022-11-28" \
+              https://api.github.com/repos/${{ github.repository }}/commits/${{ github.sha }}/pulls \
+              | jq 'map(select(.base.ref == "${{ github.ref_name }}")) | .[0].number'
+          )
+          if [ -z "${pr}" ]; then
+            echo "No PR number found. Was this push triggered by a squashed PR merge?"
+            pr=""
+          fi
+        else
+          echo "Event type: unknown or unexpected"
+          pr=""
+        fi
+
+        # Validate PR number
+        if [[ ! "${pr}" =~ ^[0-9]+$ ]]; then
+          echo "PR number format incorrect: ${pr}"
+          exit 1
+        fi
+
+        # Output PR number
+        echo "Summary ---"
+        echo -e "\tPR: ${pr}"
+        echo "pr=${pr}" >> $GITHUB_OUTPUT