name: Mirror to Codeberg

on:
  push:
    branches:
      - main
  workflow_dispatch:

concurrency:
  group: mirror-to-codeberg
  cancel-in-progress: false

permissions:
  contents: read

jobs:
  mirror:
    runs-on: ubuntu-latest
    timeout-minutes: 20

    steps:
      - name: Checkout GitHub repository
        uses: actions/checkout@v6
        with:
          fetch-depth: 0

      - name: Push main branch to Codeberg
        env:
          CODEBERG_TOKEN: ${{ secrets.CODEBERG_MIRROR_TOKEN }}
        run: |
          set -euo pipefail

          git config user.name "github-actions"
          git config user.email "github-actions@github.com"

          git remote remove codeberg 2>/dev/null || true
          git remote add codeberg "https://igareck:${CODEBERG_TOKEN}@codeberg.org/igareck/vpn-configs-for-russia.git"

          LOCAL_SHA="$(git rev-parse HEAD)"
          REMOTE_SHA="$(git ls-remote codeberg refs/heads/main | awk '{print $1}' || true)"

          echo "Local GitHub main:   $LOCAL_SHA"
          echo "Remote Codeberg main: ${REMOTE_SHA:-unknown}"

          if [ -n "${REMOTE_SHA:-}" ] && [ "$LOCAL_SHA" = "$REMOTE_SHA" ]; then
            echo "Codeberg is already up to date. Skipping push."
            exit 0
          fi

          for attempt in 1 2 3 4 5; do
            echo "Codeberg push attempt $attempt/5"

            if git push codeberg HEAD:main --force; then
              echo "Codeberg push successful"
              exit 0
            fi

            sleep_time=$((attempt * 60))
            echo "Codeberg push failed. Sleeping ${sleep_time}s before retry..."
            sleep "$sleep_time"
          done

          echo "Codeberg push failed after all retries"
          exit 1