name: Switch/Rollback Version

on:
  workflow_dispatch:
    inputs:
      version:
        description: "enter the version to switch to (example: v1.0.2)"
        required: true
        default: ""

jobs:
  switch-version:
    runs-on: ubuntu-latest
    steps:
      - name: Execute remote SSH commands
        uses: appleboy/ssh-action@v1.0.3
        with:
          host: ${{ secrets.SERVER_HOST }}
          username: ${{ secrets.SERVER_USER }}
          key: ${{ secrets.SERVER_SSH_KEY }}
          script: |
            REMOTE_BASE=${{ secrets.REMOTE_PATH }}
            RELEASES_PATH="$REMOTE_BASE/releases"
            CURRENT_PATH="$REMOTE_BASE/current"
            TARGET_VERSION="${{ github.event.inputs.version }}"

            echo ">>> Switching to version: $TARGET_VERSION"

            # 1. Check if the target directory exists
            if [ -d "$RELEASES_PATH/$TARGET_VERSION" ]; then
                # 2. Modify symbolic link (use -n and -f to ensure atomic replacement of directory links)
                ln -sfn "$RELEASES_PATH/$TARGET_VERSION" "$CURRENT_PATH"

                echo ">>> Switching to version: $TARGET_VERSION successfully"
                ls -l "$CURRENT_PATH"
            else
                echo ">>> Error: Version $TARGET_VERSION does not exist in $RELEASES_PATH"
                echo ">>> Existing version list:"
                ls -1 "$RELEASES_PATH"
                exit 1
            fi