Adding output

Author: darpanLalwani

setup-rerun-vars/action.yml

@@ -6,15 +6,45 @@ inputs:
     description: 'Run attempt number'
     required: true
 
+outputs:
+  tests_to_run:
+    description: 'Modified tests to run based on rerun logic'
+
 runs:
   using: 'composite'
   steps:
-    - name: Check if this is a re-run
+    - name: Check if this is a re-run and modify tests_to_run
       shell: bash
       run: |
+        tests_to_run="all"  # Default value
+
         if [ "${{ inputs.run_attempt }}" -gt 1 ]; then
           echo "This run is a re-run (attempt #${{ inputs.run_attempt }})."
+
+          # Fetch Run Details from GitHub API
+          curl -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+               -H "Accept: application/vnd.github.v3+json" \
+               "https://api.github.com/repos/${{ github.repository }}/actions/runs/${{ github.run_id }}" > run_details.json
+
+          # Ensure jq is installed, install if necessary
+          if ! command -v jq &> /dev/null; then
+            echo "jq not found, installing..."
+            sudo apt-get update && sudo apt-get install -y jq
+          fi
+
+          # Extract triggering actor using jq
+          triggering_actor=$(jq -r '.triggering_actor.login' run_details.json)
+
+          echo "Triggering Actor: $triggering_actor"
+
+          if [[ "$triggering_actor" == "gha-bstack-rerun[bot]" ]]; then
+            echo "The run was triggered by the GitHub App."
+            tests_to_run="rerun_tests"  # Set custom value if triggered by GitHub App
+          else
+            echo "The run was triggered by: $triggering_actor"
+          fi
         else
           echo "This is the first run."
         fi
 
+        echo "tests_to_run=${tests_to_run}" >> $GITHUB_OUTPUT