#!/usr/bin/env bash
#
# Weekly SkateSpots relay archive + optional offsite copy.
#
# Driven by the systemd user timer `skatespots-archive.timer` (install with
# scripts/install-archive-timer.sh). Local archives land in
# ~/.backups/relay; if ~/.config/skatespots/restic.env exists, the whole
# directory is pushed to a restic repository (S3/R2/B2/SFTP) and old snapshots
# are pruned. Without that file the archive is local-only — still useful, but
# not a real offsite backup.
#
# Manual run / debug:
#   scripts/backup-relay.sh
#   journalctl --user -u skatespots-archive -n 50
set -euo pipefail

REPO="/home/sovereignsk8/SkateSpots"
# systemd runs with a minimal PATH; node lives under nvm here.
export PATH="/home/sovereignsk8/.nvm/versions/node/v22.23.1/bin:$PATH"

ARCHIVE_DIR="${SKATESPOTS_ARCHIVE_DIR:-$HOME/.backups/relay}"
RESTIC_ENV="$HOME/.config/skatespots/restic.env"
# Optional SECOND offsite (e.g. an R2/B2 bucket) so we get true 3-2-1: local +
# CVM host + object storage. Same format as restic.env.
RESTIC_ENV_2="$HOME/.config/skatespots/restic-2.env"

log() { echo "[$(date -Is)] $*"; }

mkdir -p "$ARCHIVE_DIR"
cd "$REPO"

log "archiving the community relay…"
node scripts/archive-relay.mjs

# Push the archive directory to every configured restic repo. Each is sourced in
# its own subshell so RESTIC_* variables don't leak between destinations.
copy_offsite() {
  local envfile="$1"
  [ -f "$envfile" ] || return 0
  (
    set -a; . "$envfile"; set +a
    if [ -z "${RESTIC_REPOSITORY:-}" ]; then
      log "  $(basename "$envfile"): no RESTIC_REPOSITORY — skipping"
      exit 0
    fi
    log "  → $RESTIC_REPOSITORY"
    restic backup --tag skatespots-relay "$ARCHIVE_DIR"
    restic forget --tag skatespots-relay --keep-last 12 --prune
  )
}

if [ -f "$RESTIC_ENV" ] || [ -f "$RESTIC_ENV_2" ]; then
  log "pushing offsite copies…"
  copy_offsite "$RESTIC_ENV"
  copy_offsite "$RESTIC_ENV_2"
  log "offsite copies done"
else
  log "no $RESTIC_ENV — archive kept local-only (set one up for a real offsite backup)"
fi