pr_artifact.yml

# Creates a built artifact jar for apropriately labeled Pull Requests
name: PR Artifact

on:
  pull_request:
    types: 
      - labeled
      - synchronize

# if a second commit is pushed quickly after the first, cancel the first one's build
concurrency:
  group: build-artifact-${{github.head_ref}}
  cancel-in-progress: true

env:
  ARTIFACT_NAME: 'gregtech-dev'
  NOTIFICATION_BODY: |
    This Pull Request has automatic artifact deployment enabled. Download the latest build [here](https://github.com/${{github.repository}}/actions/runs/${{github.run_id}}), and extract the contents.

jobs:
  Build_Artifact:
    if: contains(github.event.pull_request.labels.*.name, format('deployment{0} artifact', ':'))
    runs-on: ubuntu-latest

    permissions: 
      pull-requests: write # needed to make a comment
      contents: read # needed to checkout the repo if defining other permissions

    steps:
      - name: Checkout Repository
        uses: actions/checkout@v3

      - name: Setup Java
        uses: actions/setup-java@v3
        with:
          distribution: 'zulu'
          java-version: '17'

      - name: Build Project
        uses: gradle/gradle-build-action@v2
        with:
          arguments: 'build --build-cache --no-daemon ' # disable daemon since only one gradle operation will happen
          generate-job-summary: false
          gradle-home-cache-includes: |
            caches
            jdks
            notifications
            wrapper

      - name: Determine Artifact Name
        id: artifact_name
        run: |
          FILE=(build/libs/*)
          echo "artifact_name=${FILE[0]}" >> $GITHUB_OUTPUT

      - name: Publish Artifact
        uses: actions/upload-artifact@v3
        with:
          name: "${{env.ARTIFACT_NAME}}-${{github.head_ref}}-${{github.sha}}"
          path: "${{steps.artifact_name.outputs.artifact_name}}"
          if-no-files-found: error

      - name: Find Existing Comment
        uses: peter-evans/find-comment@v2
        id: find-existing
        with:
          issue-number: ${{github.event.pull_request.number}}
          comment-author: 'github-actions[bot]'
          body-includes: 'Download the latest build [here]'

      - name: Create or Update Artifact Publish Notification
        uses: peter-evans/create-or-update-comment@v2
        with:
          issue-number: ${{github.event.pull_request.number}}
          comment-id: ${{steps.find-existing.outputs.comment-id}}
          edit-mode: replace
          body: ${{env.NOTIFICATION_BODY}}