name: Nightly GDrive Backup

# Kjører kl 03:00 UTC (05:00 CEST) hver natt
# Manuell kjøring: GitHub UI → Actions → Nightly GDrive Backup → Run workflow
# NB: push-trigger er bevisst fjernet — kjør kun schedule + manuelt
on:
  schedule:
    - cron: '0 3 * * *'
  workflow_dispatch:

jobs:
  backup:
    name: Backup OSVauco → Google Drive
    runs-on: ubuntu-latest
    timeout-minutes: 15

    steps:
      - name: Checkout repo
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      # ── 1. Installer rclone ─────────────────────────────────────────────────
      - name: Install rclone
        run: |
          curl https://rclone.org/install.sh | sudo bash
          rclone version

      # ── 2. Valider at secrets er satt ───────────────────────────────────────
      - name: Validate secrets
        env:
          SA_JSON: ${{ secrets.RCLONE_GDRIVE_SA_JSON }}
          FOLDER_ID: ${{ secrets.GDRIVE_BACKUP_FOLDER_ID }}
        run: |
          if [[ -z "$SA_JSON" ]]; then
            echo "❌ RCLONE_GDRIVE_SA_JSON er ikke satt som GitHub Secret."
            echo "   Se docs/GDRIVE_SETUP.md for instruksjoner."
            exit 1
          fi
          if [[ -z "$FOLDER_ID" ]]; then
            echo "❌ GDRIVE_BACKUP_FOLDER_ID er ikke satt som GitHub Secret."
            echo "   Se docs/GDRIVE_SETUP.md for instruksjoner."
            exit 1
          fi
          echo "✔ Secrets OK"

      # ── 3. Konfigurer rclone med GDrive service account ─────────────────
      - name: Configure rclone
        env:
          RCLONE_GDRIVE_SA_JSON: ${{ secrets.RCLONE_GDRIVE_SA_JSON }}
          GDRIVE_FOLDER_ID: ${{ secrets.GDRIVE_BACKUP_FOLDER_ID }}
        run: |
          mkdir -p ~/.config/rclone
          cat > ~/.config/rclone/rclone.conf << EOF
          [gdrive]
          type = drive
          scope = drive
          service_account_credentials = ${RCLONE_GDRIVE_SA_JSON}
          root_folder_id = ${GDRIVE_FOLDER_ID}
          EOF

      # ── 4. Nøkkelfiler (MD-indeks) → GDrive/vauco-mirror/ ───────────────
      - name: Sync key docs to GDrive mirror folder
        run: |
          rclone copy docs/AGENT_RULEBOOK.md     gdrive:vauco-mirror/
          rclone copy docs/GDRIVE_MIRROR_BOOT.md gdrive:vauco-mirror/
          rclone copy docs/LEARNINGS.md          gdrive:vauco-mirror/
          rclone copy docs/VAUCO_OS_ROADMAP.md   gdrive:vauco-mirror/
          rclone copy docs/TODO.md               gdrive:vauco-mirror/
          rclone copy MASTERPLAN.md              gdrive:vauco-mirror/
          rclone copy protocols/sessions/index.md gdrive:vauco-mirror/sessions/ || true
          echo "[backup] Nøkkelfiler synkronisert → GDrive/vauco-mirror/"

      # ── 5. Full repo-backup som git bundle → GDrive/vauco-backup/ ────────
      - name: Create git bundle
        run: |
          TIMESTAMP=$(date '+%Y-%m-%dT%H%M')
          BUNDLE_NAME="OSVauco-backup-${TIMESTAMP}.bundle"
          git bundle create "/tmp/${BUNDLE_NAME}" --all
          echo "BUNDLE_NAME=${BUNDLE_NAME}" >> $GITHUB_ENV
          echo "[backup] Bundle opprettet: ${BUNDLE_NAME}"

      - name: Upload bundle to GDrive
        run: |
          rclone copy "/tmp/${{ env.BUNDLE_NAME }}" gdrive:vauco-backup/
          echo "[backup] Bundle lastet opp → GDrive/vauco-backup/${{ env.BUNDLE_NAME }}"

      # ── 6. Rydd gamle bundles (behold siste 7) ───────────────────────
      - name: Prune old bundles (keep last 7)
        run: |
          rclone ls gdrive:vauco-backup/ \
            | sort -k2 \
            | head -n -7 \
            | awk '{print $2}' \
            | xargs -I{} rclone deletefile gdrive:vauco-backup/{} || true
          echo "[backup] Gamle bundles ryddet (behold 7 siste)"

      # ── 7. Sammendrag ────────────────────────────────────────────────────────
      - name: Summary
        run: |
          echo "=== BACKUP FERDIG ==="
          echo "Tidspunkt : $(date '+%Y-%m-%dT%H:%M %Z')"
          echo "Bundle    : ${{ env.BUNDLE_NAME }}"
          echo "Mirror    : GDrive/vauco-mirror/ (nøkkelfiler)"
          echo "Backup    : GDrive/vauco-backup/ (git bundle)"
          rclone ls gdrive:vauco-backup/ | sort -k2 | tail -7