Mappings/.github/workflows/main.yml

name: Check for new Minecraft snapshot

on:
  schedule:
    - cron: '10 * * * *'
  workflow_dispatch:

jobs:
  run:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          persist-credentials: false
          fetch-depth: 0

      - name: Setup Python
        uses: actions/setup-python@v5

      - name: Check for snapshot
        run: pip install -r requirements.txt && python download_server.py

      - name: Setup Java JDK
        uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: 21
          check-latest: true

      - name: Validate Gradle Wrapper
        uses: gradle/wrapper-validation-action@v2

      # Wooyeah
      - name: Read last snapshot
        id: last_snapshot
        uses: juliangruber/read-file-action@v1
        with:
          path: ./last_snapshot.txt
      - name: Read last release
        id: last_release
        uses: juliangruber/read-file-action@v1
        with:
          path: ./last_release.txt
      - name: Read next release
        id: next_release
        uses: juliangruber/read-file-action@v1
        with:
          path: ./next_release.txt

      - name: Compile MappingsGenerator jar
        run: ./gradlew build && mv build/libs/MappingsGenerator-*.jar ./MappingsGenerator.jar
      - name: Run MappingsGenerator
        run: java -jar MappingsGenerator.jar server.jar ${{ steps.next_release.outputs.content }}
      - name: Pack mappings
        run: java -cp MappingsGenerator.jar com.viaversion.mappingsgenerator.MappingsOptimizer ${{ steps.last_release.outputs.content }} ${{ steps.next_release.outputs.content }} --generateDiffStubs
      - name: Pack backwards mappings
        run: java -cp MappingsGenerator.jar com.viaversion.mappingsgenerator.MappingsOptimizer ${{ steps.next_release.outputs.content }} ${{ steps.last_release.outputs.content }} --generateDiffStubs

      - name: Commit changes
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "automation"
          git add .
          git commit -am "Update: ${{ steps.last_snapshot.outputs.content }}"          

      - name: Push changes
        uses: ad-m/github-push-action@master
        with:
          github_token: ${{ secrets.TOKEN }}
          branch: ${{ github.ref }}