#!/usr/bin/env bash
set -euo pipefail

[[ ${EUID} -eq 0 ]] || { echo 'install-asterisk-native.sh must run as root' >&2; exit 1; }
START=false
for arg in "$@"; do
  case "$arg" in
    --start) START=true ;;
    *) echo "unknown option: $arg" >&2; exit 2 ;;
  esac
done

PACKAGE_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
cd -- "$PACKAGE_DIR"
. /etc/os-release
[[ ${ID:-} == debian && ${VERSION_ID:-} == 13 ]] || { echo 'Debian 13 is required' >&2; exit 1; }
[[ $(uname -m) == x86_64 ]] || { echo 'amd64 host is required' >&2; exit 1; }
STAGE=asterisk-22.10.1-native-stage.tar
sha256sum -c "$STAGE.sha256"
[[ -f asterisk.service ]] || { echo 'asterisk.service is missing' >&2; exit 1; }
getent group asterisk >/dev/null || groupadd --system asterisk
id -u asterisk >/dev/null 2>&1 || useradd --system --home-dir /var/lib/asterisk --shell /usr/sbin/nologin --gid asterisk asterisk
# Keep management-owned /etc/asterisk configuration intact.
tar --exclude='etc/asterisk/*' -xpf "$STAGE" -C /
ldconfig
install -d -o asterisk -g asterisk -m 0750 /var/lib/asterisk /var/log/asterisk /var/spool/asterisk /var/run/asterisk
install -o root -g root -m 0644 asterisk.service /etc/systemd/system/asterisk.service
systemctl daemon-reload
systemctl enable asterisk.service
if [[ "$START" == true ]]; then
  systemctl restart asterisk.service
fi
/usr/sbin/asterisk -V
printf 'installed asterisk=22.10.1 start=%s config_preserved=true\n' "$START"