flutter_upgrade.yml

name: Flutter Upgrade Check

on:
  schedule:
    - cron: "0 0 * * 1"
  workflow_dispatch:

jobs:
  check-flutter-upgrade:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout repository
        uses: actions/checkout@v5

      - name: Read current Flutter version
        id: read-version
        shell: bash
        run: |
          FLUTTER_VERSION=$(cat .flutter-version)
          echo "Current Flutter version: $FLUTTER_VERSION"
          echo "FLUTTER_VERSION=$FLUTTER_VERSION" >> $GITHUB_ENV

      - name: Get latest stable Flutter version
        id: check-latest
        shell: bash
        run: |
          LATEST_VERSION=$(curl -s https://storage.googleapis.com/flutter_infra_release/releases/releases_linux.json \
            | jq -r '.releases[] | select(.channel == "stable") | .version' \
            | head -n 1)
          echo "Latest stable Flutter version: $LATEST_VERSION"
          echo "LATEST_VERSION=$LATEST_VERSION" >> $GITHUB_ENV

      - name: Compare versions and update .flutter-version
        id: update-version
        shell: bash
        run: |
          if [ "$FLUTTER_VERSION" != "$LATEST_VERSION" ]; then
            echo "Updating Flutter version..."
            echo "$LATEST_VERSION" > .flutter-version
            git --no-pager diff
            echo "UPDATE_NEEDED=true" >> $GITHUB_ENV
          else
            echo "Flutter is already up to date."
            echo "UPDATE_NEEDED=false" >> $GITHUB_ENV
          fi

      - name: Commit and create PR if update is needed
        if: env.UPDATE_NEEDED == 'true'
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        shell: bash
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"

          BRANCH_NAME="flutter-upgrade-${LATEST_VERSION}"

          git checkout -b "$BRANCH_NAME"
          git add .flutter-version
          git commit -m "chore: upgrade Flutter to ${LATEST_VERSION}"
          git push origin "$BRANCH_NAME"

          gh pr create \
            --title "chore(deps): upgrade Flutter to ${LATEST_VERSION}" \
            --body "This PR updates the Flutter SDK version in .flutter-version to the latest stable release." \
            --base flutter \
            --head "$BRANCH_NAME"