#!/usr/bin/env bash
# gstack-capy-session — the full Capy skill wrapper: the checkout-owned half
# of a Capy session start. The frozen bootstrapper the Drive skill holds
# (capy/skill/gstack/scripts/install.sh) clones or fast-forwards this checkout
# and execs this script with its own arguments plus:
#   GSTACK_CAPY_WRAPPER_REV / GSTACK_CAPY_WRAPPER_PATH  the bootstrapper that ran
#   GSTACK_CAPY_REMOTE_MIN    the supported minimum from origin's capy/support.env, or `unknown`
#   GSTACK_CAPY_UPGRADED_FROM the version it fast-forwarded from (setup is never skipped then)
#   GSTACK_CAPY_LOCK_HELD=1   install mode: .gstack-capy-install.lock is held on an
#                             inherited descriptor; nothing here takes it again
# Because this file moves with the checkout, session-start behavior can change
# without anyone recopying the Drive skill; that includes the stale-copy owner
# action, read from capy/support.env through gstack_support_env_get.
#
# Usage: gstack-capy-session [--check] --root <checkout> [gstack-capy-install arguments]
#   --check  certify only (bin/gstack-capy-install --check: the doctor with the
#            launch PATH and the remote minimum, the verdict, the launch line)
#   default  install or repair (bin/gstack-capy-install)
# The last line is the `gstack:` trailer; the exit status is the installer's.
set -u
ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
prev=""
for a in "$@"; do [ "$prev" = --root ] && ROOT="$a"; prev="$a"; done
INSTALLER="$ROOT/bin/gstack-capy-install"
if [ ! -x "$INSTALLER" ]; then
  echo "gstack: fail installer — $INSTALLER is missing; fix: bash ${GSTACK_CAPY_WRAPPER_PATH:-<skill>/scripts/install.sh} (re-clones or fast-forwards)"
  exit 1
fi
[ "${GSTACK_CAPY_REMOTE_MIN:-}" = unknown ] && echo "gstack-capy-session: remote minimum unknown (fetch failed); the revision row is local only"
# shellcheck source=bin/gstack-install-verdict.sh
. "$ROOT/bin/gstack-install-verdict.sh"
MIN_WRAPPER=$(gstack_support_env_get "$(gstack_source_root "$ROOT/bin")" GSTACK_CAPY_MIN_WRAPPER)
if [ -n "$MIN_WRAPPER" ] && [ "${GSTACK_CAPY_WRAPPER_REV:-0}" -lt "$MIN_WRAPPER" ] 2>/dev/null; then
  echo "gstack-capy-skill: owner action — Drive copy is wrapper ${GSTACK_CAPY_WRAPPER_REV:-0}, minimum $MIN_WRAPPER; copy $ROOT/capy/skill/gstack/ (CAPY_WRAPPER_STALE)"
fi
exec "$INSTALLER" "$@"