name: Draft release

on:
  push:
    tags: "*"

jobs:
  draft:
    name: Create GitHub draft release
    if: "startsWith(github.event.head_commit.message, 'Release ')"
    runs-on: ubuntu-20.04
    strategy:
      fail-fast: false

    steps:
      - uses: actions/checkout@v2
        with:
          submodules: true

      - name: Setup PHP
        uses: shivammathur/setup-php@2.12.0
        with:
          php-version: 8.0

      - name: Restore Composer package cache
        uses: actions/cache@v2
        with:
          path: |
            ~/.cache/composer/files
            ~/.cache/composer/vcs
          key: "composer-v2-cache-${{ hashFiles('./composer.lock') }}"
          restore-keys: |
            composer-v2-cache-

      - name: Install Composer dependencies
        run: composer install --no-dev --prefer-dist --no-interaction --ignore-platform-reqs

      - name: Patch VersionInfo
        run: |
          BUILD_NUMBER=2000+$GITHUB_RUN_NUMBER #to stay above jenkins
          echo "Build number: $BUILD_NUMBER"
          sed -i "s/const BUILD_NUMBER = 0/const BUILD_NUMBER = ${BUILD_NUMBER}/" src/pocketmine/VersionInfo.php

      - name: Minify BedrockData JSON files
        run: php src/pocketmine/resources/vanilla/.minify_json.php

      - name: Run preprocessor
        run: |
          PM_PREPROCESSOR_PATH="$GITHUB_WORKSPACE/build/preprocessor"
          php "$PM_PREPROCESSOR_PATH/PreProcessor.php" --path=src --multisize || (echo "Preprocessor exited with code $?" && exit 1)
          #dump the diff of preprocessor replacements to a patch in case it has bugs
          git diff > preprocessor_diff.patch
          VENDOR_PM="$GITHUB_WORKSPACE/vendor"
          VENDOR_PM_BACKUP="$GITHUB_WORKSPACE/vendor-before-preprocess"
          cp -r "$VENDOR_PM" "$VENDOR_PM_BACKUP"
          for f in $(ls $VENDOR_PM/pocketmine); do
            echo "Processing directory \"$f\"..."
            php "$PM_PREPROCESSOR_PATH/PreProcessor.php" --path="$VENDOR_PM/pocketmine/$f/src" --multisize || (echo "Preprocessor exited with code $?" && exit 1)
            echo "Checking for changes in \"$f\"..."
            DIFF=$(git diff --no-index "$VENDOR_PM_BACKUP/pocketmine/$f" "$VENDOR_PM/pocketmine/$f" || true)
            if [ "$DIFF" != "" ]; then
              PATCH="$GITHUB_WORKSPACE/preprocessor_diff_$f.patch"
              echo "$DIFF" > "$PATCH"
              echo "Generated patch file \"$PATCH\""
            else
              echo "No diff generated for \"$f\" (preprocessor made no changes)"
            fi
          done

      - name: Build PocketMine-MP.phar
        run: php -dphar.readonly=0 build/server-phar.php --git ${{ github.sha }}

      - name: Get PocketMine-MP release version
        id: get-pm-version
        run: |
          echo ::set-output name=PM_VERSION::$(php -r 'require "vendor/autoload.php"; echo \pocketmine\BASE_VERSION;')
          echo ::set-output name=MCPE_VERSION::$(php -r 'require "vendor/autoload.php"; echo \pocketmine\network\mcpe\protocol\ProtocolInfo::MINECRAFT_VERSION_NETWORK;')
          echo ::set-output name=PM_VERSION_SHORT::$(php -r 'require "vendor/autoload.php"; $v = explode(".", \pocketmine\BASE_VERSION); array_pop($v); echo implode(".", $v);')
          echo ::set-output name=PM_VERSION_MD::$(php -r 'require "vendor/autoload.php"; echo str_replace(".", "", \pocketmine\BASE_VERSION);')

      - name: Generate build info
        run: php build/generate-build-info-json.php ${{ github.sha }} ${{ steps.get-pm-version.outputs.PM_VERSION }} ${{ github.repository }} > build_info.json

      - name: Upload release artifacts
        uses: actions/upload-artifact@v2
        with:
          name: release_artifacts
          path: |
            ${{ github.workspace }}/PocketMine-MP.phar
            ${{ github.workspace }}/start.*
            ${{ github.workspace }}/build_info.json

      - name: Create draft release
        uses: ncipollo/release-action@v1.8.6
        with:
          artifacts: ${{ github.workspace }}/PocketMine-MP.phar,${{ github.workspace }}/start.*,${{ github.workspace }}/build_info.json
          commit: ${{ github.sha }}
          draft: true
          name: PocketMine-MP ${{ steps.get-pm-version.outputs.PM_VERSION }}
          tag: ${{ steps.get-pm-version.outputs.PM_VERSION }}
          token: ${{ secrets.GITHUB_TOKEN }}
          body: |
            **For Minecraft: Bedrock Edition ${{ steps.get-pm-version.outputs.MCPE_VERSION }}**

            Please see the [changelogs](/changelogs/${{ steps.get-pm-version.outputs.PM_VERSION_SHORT }}.md#${{ steps.get-pm-version.outputs.PM_VERSION_MD }}) for details.

      - name: Upload preprocessor diffs
        uses: actions/upload-artifact@v2
        if: always()
        with:
          name: preprocessor_diffs
          path: ${{ github.workspace }}/preprocessor_diff*.patch