check-scarb-version.yml

name: Check Scarb Version

on:
  schedule:
    - cron: '0 0 * * *' # Runs at midnight every day
  workflow_dispatch: # Allows for manual triggering
permissions:
  contents: write
  pull-requests: write

jobs:
  check-scarb-version:
    runs-on: ubuntu-latest

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

      - name: Get the latest version of Scarb
        id: get_latest_version
        run: |
          SCARB_VERSION=$(curl -s https://api.github.com/repos/software-mansion/scarb/releases/latest | jq -r '.tag_name')
          echo "SCARB_VERSION=${SCARB_VERSION}" >> $GITHUB_ENV

      - name: Load previous Scarb version
        id: load_previous_version
        run: |
          if [ -f .scarb-version ]; then
            PREVIOUS_VERSION=$(cat .scarb-version)
          else
            PREVIOUS_VERSION="none"
          fi
          echo "PREVIOUS_VERSION=${PREVIOUS_VERSION}" >> $GITHUB_ENV

      - name: Compare versions
        id: compare_versions
        run: |
          if [ "$SCARB_VERSION" != "$PREVIOUS_VERSION" ]; then
            echo "New version found: $SCARB_VERSION"
            echo "update_required=true" >> $GITHUB_ENV
          else
            echo "No update required"
            echo "update_required=false" >> $GITHUB_ENV
          fi

      - name: Check if PR already exists
        id: check_pr_exists
        if: env.update_required == 'true'
        run: |
          PR_EXIST=$(gh pr list --state=open --head update-scarb-${{ env.SCARB_VERSION }} | wc -l)
          if [ "$PR_EXIST" -gt 0 ]; then
            echo "PR already exists."
            echo "pr_exists=true" >> $GITHUB_ENV
          else
            echo "No PR exists."
            echo "pr_exists=false" >> $GITHUB_ENV
          fi

      - name: Check if branch already exists
        id: check_branch_exists
        if: env.update_required == 'true'
        run: |
          BRANCH_EXIST=$(git ls-remote --heads origin update-scarb-${{ env.SCARB_VERSION }} | wc -l)
          if [ "$BRANCH_EXIST" -gt 0 ]; then
            echo "Branch already exists."
            echo "branch_exists=true" >> $GITHUB_ENV
          else
            echo "Branch does not exist."
            echo "branch_exists=false" >> $GITHUB_ENV
          fi

      - name: Create a new branch for the update
        if: env.update_required == 'true' && env.pr_exists == 'false' && env.branch_exists == 'false'
        run: |
          git checkout -b update-scarb-${{ env.SCARB_VERSION }}
          echo "${{ env.SCARB_VERSION }}" > .scarb-version

      - name: Commit changes
        if: env.update_required == 'true' && env.pr_exists == 'false' && env.branch_exists == 'false'
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"
          git add .scarb-version
          git commit -m "Update Scarb version to ${{ env.SCARB_VERSION }}"

      - name: Push changes to new branch
        if: env.update_required == 'true' && env.pr_exists == 'false' && env.branch_exists == 'false'
        run: |
          git push origin update-scarb-${{ env.SCARB_VERSION }}

      - name: Create Pull Request
        if: env.update_required == 'true' && env.pr_exists == 'false'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          gh pr create \
            --head update-scarb-${{ env.SCARB_VERSION }} \
            --base develop \
            --title "Update Scarb to version ${{ env.SCARB_VERSION }}" \
            --body "A new version of Scarb has been released: **${{ env.SCARB_VERSION }}**.\nThis PR updates the project with the latest version." \
            --label "scarb,update"