#!/usr/bin/env sh
# 🤖 ops mesh — mesh-membership maintenance for the activator mesh
# (docs/planet-scale.md; meshreplicate.go).
#
#   ./deploy/ops mesh seed <peer-base-url> [box]   # replicate every in-scope
#                                                  # hibernating route (+ its
#                                                  # instance env) to a peer
#
# Why this verb exists: a box joins the mesh with an EMPTY registry, but HRW
# placement starts assigning it hosts the moment it heartbeats — any host it
# doesn't know answers "unknown host", so an unseeded member silently blackholes
# ~1/N of the placement-scoped fleet, new creates included. `lchat mesh-seed` is
# the catch-up; this verb runs it on the source box with the router's own env
# borrowed via --env-file (the mesh token/domains live in /data/router.env,
# which operators deliberately cannot read — the sudo'd binary can).
#
# Run it FROM the box that has the routes (the established member), pointing at
# the box that needs them. Idempotent: re-seeding overwrites with the same
# content, so run it again whenever in doubt — e.g. after a peer rebuild, or
# after this repo gains new replicated fields (the env began riding along
# 2026-07-24; a pre-env seed left peers waking instances token-less).
set -eu

sub="${1:-}"
[ $# -gt 0 ] && shift

case "$sub" in
  seed)
    # `seed --prune` also tombstones peer rows the source no longer has —
    # the reconciliation for deletions a best-effort fan-out missed (#1346).
    PRUNE=""
    if [ "${1:-}" = "--prune" ]; then PRUNE="--prune"; shift; fi
    peer="${1:-}"
    box="${2:-${LCHAT_MESH_SOURCE_BOX:-elevenbox}}"
    if [ -z "$peer" ]; then
      echo "usage: ops mesh seed [--prune] <peer-base-url> [box]   (e.g. ops mesh seed https://77.68.125.53)" >&2
      exit 2
    fi
    echo "== seeding mesh routes (+env) from $box to $peer${PRUNE:+, pruning stale peer rows}"
    ssh "$box" "sudo -n /opt/lchat/lchat mesh-seed --env-file /data/router.env $PRUNE '$peer'"
    ;;
  ""|-h|--help|help|*)
    cat <<'EOF' >&2
ops mesh — mesh-membership maintenance

  ./deploy/ops mesh seed [--prune] <peer-base-url> [box]
                                                 replicate all in-scope hibernating
                                                 routes (+ instance env) to a peer;
                                                 --prune also tombstones peer rows
                                                 the source no longer has
                                                 (box defaults to elevenbox)
EOF
    [ "$sub" = "" ] || [ "$sub" = "-h" ] || [ "$sub" = "--help" ] || [ "$sub" = "help" ] || exit 2
    ;;
esac