action.yml

name: Check Skip Duplicates
description: 'Check that will output a variable to allow you to skip duplicate runs. Example: If you have both push and pull_request triggers enabled and you dont want to run 2 jobs for the same commit if a PR is already open you can add this to your jobs to skip that extra execution.'

outputs:
  should-run:
    description: 'Flag that determines if this execution should run or not'
    value: ${{ steps.check.outputs.should_run }}

runs:
  using: composite
  steps:
    - name: Check if push has associated open PR
      id: check
      env:
        GH_TOKEN: ${{ github.token }}
        REF_NAME: ${{ github.ref_name }}
        REPO_NAME: ${{ github.repository }}
        EVENT_NAME: ${{ github.event_name }}
      shell: bash
      run: |
        # For non-push events, always run
        if [ "$EVENT_NAME" != "push" ]; then
          echo "should_run=true" >> $GITHUB_OUTPUT
          echo "Event is $EVENT_NAME, will run CI"
          exit 0
        fi

        # For push events, check if there's an open PR for this branch
        pr_json=$(gh pr list \
          --repo "$REPO_NAME" \
          --head "$REF_NAME" \
          --state open \
          --json number \
          --limit 1)

        pr_number=$(echo "$pr_json" | jq -r '.[0].number // ""')

        if [ -n "$pr_number" ]; then
          echo "should_run=false" >> $GITHUB_OUTPUT
          echo "Push to branch with open PR #$pr_number detected, skipping (PR event will run CI)"
        else
          echo "should_run=true" >> $GITHUB_OUTPUT
          echo "Push to branch without open PR, will run CI"
        fi