update-jshell-image-version.yaml

name: Auto-Update JShell Image version

on:
  workflow_dispatch:
  schedule:
    - cron: "0 0 * * 5" # Every Friday at Midnight

jobs:
  update_build_gradle:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Install GitHub CLI
        run: |
          sudo apt-get update
          sudo apt-get install gh

      - name: Update build.gradle and create PR
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          # Extract current version from JShellWrapper build.gradle
          gradle_file="JShellWrapper/build.gradle"
          current_version=$(grep -oP "(?<=from\.image\s=\s'eclipse-temurin:)\d+" $gradle_file)
          
          if [ -z "$current_version" ]; then
            echo "Failed to extract version from $gradle_file \"from.image\""
            exit 1
          fi
          
          # Fetch the latest eclipse-temurin image
          latest_version=$(curl -s "https://hub.docker.com/v2/repositories/library/eclipse-temurin/tags/?page_size=100" | \
          jq -r '[.results[].name | select(test("alpine")) | select(test("^[0-9]+"))] | map(capture("^(?<major>[0-9]+)")) | max_by(.major | tonumber) | .major')
          
          
          # Check if a new version is available
          if [ "$latest_version" -le "$current_version" ]; then
            echo "No new versions available"
            exit 0
          fi
          
          # Update the build.gradle with the new version
          sed -i "s/eclipse-temurin:$current_version-alpine/eclipse-temurin:$latest_version-alpine/" $gradle_file
          
          echo "Updated JDK version from $current_version to $latest_version"

          git config --global user.name "github-actions[bot]"
          git config --global user.email "github-actions[bot]@users.noreply.github.com"
          
          branch_name="update-jshell-java-version-$latest_version"
          git checkout -b "$branch_name"
          
          git add "$gradle_file"
          git commit -m "JShell Java version to $latest_version"
          
          git fetch origin
          git rebase origin/develop
          git push origin "$branch_name"

          gh pr create --title "Update JShell java version to $latest_version" \
          --body "This PR updates the JShell java version in the JShellWrapper build.gradle file from $current_version to $latest_version." \
          --head "$branch_name" \
          --base "develop"