Post code suggestions on PRs with format issues #1

	# Description: This workflow applies the formatter against the opened pull request and upload the patch.
	# Since this pull request receives untrusted code, we should NOT have any secrets in the environment.
	# https://securitylab.github.com/research/github-actions-preventing-pwn-requests/
	---
	name: pr-format-workflow

	on:
	pull_request:
	types: [opened, synchronize]
	branches:
	- main

	concurrency:
	group: '${{ github.workflow }} @ ${{ github.ref }}'
	cancel-in-progress: true

	jobs:
	upload-patch:
	runs-on: ubuntu-latest
	if: ${{ github.repository == 'spring-projects/spring-security' }}
	timeout-minutes: 10
	steps:
	- uses: actions/checkout@v4
	with:
	ref: ${{github.event.pull_request.head.ref}}
	repository: ${{github.event.pull_request.head.repo.full_name}}
	- name: Set up gradle
	uses: spring-io/spring-gradle-build-action@v2
	with:
	java-version: '17'
	distribution: 'temurin'

	# Capture the PR number
	# https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#using-data-from-the-triggering-workflow
	- name: Create pr_number.txt
	run: echo "${{ github.event.number }}" > pr_number.txt
	- uses: actions/upload-artifact@v4
	with:
	name: pr_number
	path: pr_number.txt
	- name: Remove pr_number.txt
	run: rm -f pr_number.txt

	# Format code
	- name: Format with Gradle
	run: ./gradlew format

	# Capture the diff
	- name: Create patch
	run: \|
	git diff \| tee git-diff.patch
	- uses: actions/upload-artifact@v4
	with:
	name: patch
	path: git-diff.patch

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