#!/usr/bin/env bash
#
# Orb resume for idx-cli.
#
# The repository has no services and no private registries, so nothing here
# needs credentials. This verifies quickly that the snapshot's toolchain is
# still usable after a pause, and restores the Nix flake config if it vanished.
# Keep it fast: Amp waits at most 10 seconds.
set -euo pipefail

repo_root="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
nix_bin="$HOME/.nix-profile/bin/nix"
nix_conf="$HOME/.config/nix/nix.conf"
log="$HOME/.cache/amp/logs/resume-detail.log"

mkdir -p "$(dirname "$log")"
log_line() { printf '%s idx-cli resume: %s\n' "$(date -Is)" "$*" >>"$log"; }

fail() {
  log_line "FAILED: $*"
  printf 'idx-cli orb: %s\nRepair it with %s/.agents/setup\n' "$*" "$repo_root" >&2
  exit 1
}

if [ ! -x "$nix_bin" ]; then
  fail "Nix is not installed"
fi

if ! grep -qE '^[[:space:]]*experimental-features[[:space:]]*=.*nix-command' "$nix_conf" 2>/dev/null; then
  mkdir -p "$(dirname "$nix_conf")"
  printf 'experimental-features = nix-command flakes\n' >>"$nix_conf"
  log_line "restored $nix_conf"
fi

# The toolchain has to be on PATH in a clean login shell: that is the
# environment Amp's executor and supervised orb services inherit.
if ! env -i HOME="$HOME" USER="${USER:-user}" PATH=/usr/bin:/bin /bin/bash -lc 'command -v cargo >/dev/null 2>&1'; then
  fail "cargo is not on PATH in a clean login shell"
fi

log_line "ok"