deploy.yml

name: Build and Deploy
on: [push]
jobs:
  build-and-deploy:
    runs-on: ubuntu-latest
    permissions:
      contents: write
    steps:
      - name: Checkout 🛎️
        uses: actions/checkout@v7
        with:
          persist-credentials: false
      - name: Setup Java ☕
        uses: actions/setup-java@v5
        with:
          java-version: 21
          distribution: temurin
      - name: Setup Node.js 🟢
        uses: actions/setup-node@v6
        with:
          node-version: 24
      - name: Cache Minecraft server files 💾
        uses: actions/cache@v6
        with:
          path: |
            server
            headlessmc/game
          key: minecraft-${{ hashFiles('modpack.pom.xml') }}
      - name: Install and Build 🔧
        run: |
          npm install --legacy-peer-deps
          npm run build
          npm run lint
          npm test
      - name: Submit coverage results
        uses: coverallsapp/github-action@v2
      - name: Generate modpack.json from POM 📋
        run: npm run generate:modpack
      - name: Download mods and generate metadata 📦
        run: npm run generate:metadata
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      - name: Inject custom language files 🌐
        run: |
          python3 - <<'PYEOF'
          import json, os

          for modid in os.listdir('lang'):
            lang_dir = os.path.join('lang', modid)
            if not os.path.isdir(lang_dir):
              continue
            for lang_file in os.listdir(lang_dir):
              src = os.path.join(lang_dir, lang_file)
              dst_dir = os.path.join('mod_assets', modid, 'lang')
              dst = os.path.join(dst_dir, lang_file)
              os.makedirs(dst_dir, exist_ok=True)
              try:
                with open(dst) as f:
                  existing = json.load(f)
              except (FileNotFoundError, json.JSONDecodeError):
                existing = {}
              with open(src) as f:
                custom = json.load(f)
              existing.update(custom)
              with open(dst, 'w') as f:
                json.dump(existing, f, indent=2)
              print(f'Merged {src} into {dst}')
          PYEOF
      - name: Install Xvfb 🖥️
        run: sudo apt-get install -y xvfb
      - name: Generate icons 🎨
        run: xvfb-run --auto-servernum --server-args="-screen 0 1920x1080x24" npm run generate:icons --headlessmc-version 2.9.0
      - name: Generate HTML 📄
        run: npm run generate:html
      - name: Compress icons 🗜️
        run: npm run generate:compress
      - name: Restore unchanged icons and track Minecraft version 🔄
        run: |
          # Read the current Minecraft version from modpack.json
          MC_VERSION=$(python3 -c "import json; print(json.load(open('modpack.json'))['minecraft'])")
          echo "Current Minecraft version: $MC_VERSION"

          # Try to fetch gh-pages (may not exist on the very first deployment)
          PREV_VERSION=""
          if git fetch origin gh-pages --depth=1 2>/dev/null; then
            PREV_VERSION=$(git cat-file blob origin/gh-pages:minecraft-version.txt 2>/dev/null || echo "")
          fi
          echo "Previous Minecraft version: '${PREV_VERSION}'"

          if [ "$MC_VERSION" = "$PREV_VERSION" ]; then
            echo "Minecraft version unchanged — restoring existing icons from gh-pages (only new icons will be added)"
            RESTORED=0
            SKIPPED=0
            while IFS= read -r icon_path; do
              local_path="output/$icon_path"
              if [ -f "$local_path" ]; then
                git cat-file blob "origin/gh-pages:$icon_path" > "$local_path"
                RESTORED=$((RESTORED + 1))
              else
                SKIPPED=$((SKIPPED + 1))
              fi
            done < <(git ls-tree -r --name-only origin/gh-pages -- 'assets/icon/' 2>/dev/null || true)
            echo "Restored $RESTORED existing icons from gh-pages; $SKIPPED icons from gh-pages no longer present in new export"
          else
            echo "Minecraft version changed from '${PREV_VERSION}' to '${MC_VERSION}' — using all freshly generated icons"
          fi

          # Write the current Minecraft version into output/ so it is tracked on gh-pages
          # and future deployments can detect whether the Minecraft version has changed.
          echo "$MC_VERSION" > output/minecraft-version.txt
          echo "Written output/minecraft-version.txt"
      - name: Deploy 🚀
        if: github.ref == 'refs/heads/master'
        uses: JamesIves/github-pages-deploy-action@v4.8.0
        with:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          BRANCH: gh-pages
          FOLDER: output
          CLEAN: true