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

APP_HOME="${APP_HOME:-/home/zaine/master-folder/projects/java_projects/org_backend}"
SERVICE_NAME="${SERVICE_NAME:-org-backend.service}"
SYSTEMCTL_TIMEOUT="${SYSTEMCTL_TIMEOUT:-120}"

SOURCE_DIR="$(pwd)"
SOURCE_JAR="${SOURCE_DIR}/target/org-backend.jar"
APP_TARGET_DIR="${APP_HOME}/target"
APP_JAR="${APP_TARGET_DIR}/org-backend.jar"
SOURCE_SERVICE="${SOURCE_DIR}/misc/${SERVICE_NAME}"
SYSTEMD_SERVICE="/etc/systemd/system/${SERVICE_NAME}"

if [[ ! -f "${SOURCE_JAR}" ]]; then
  echo "Missing built jar: ${SOURCE_JAR}" >&2
  exit 1
fi

if [[ ! -f "${SOURCE_SERVICE}" ]]; then
  echo "Missing service file: ${SOURCE_SERVICE}" >&2
  exit 1
fi

mkdir -p "${APP_TARGET_DIR}"

if [[ "$(realpath "${SOURCE_JAR}")" != "$(realpath -m "${APP_JAR}")" ]]; then
  echo "Installing jar to ${APP_JAR}"
  install -m 0644 "${SOURCE_JAR}" "${APP_JAR}"
else
  echo "Built jar is already in place at ${APP_JAR}"
fi

echo "Checking passwordless sudo access"
sudo -n true

echo "Installing systemd unit to ${SYSTEMD_SERVICE}"
sudo -n install -m 0644 "${SOURCE_SERVICE}" "${SYSTEMD_SERVICE}"

echo "Reloading systemd"
sudo -n systemctl daemon-reload

echo "Enabling ${SERVICE_NAME}"
sudo -n systemctl enable "${SERVICE_NAME}"

echo "Restarting ${SERVICE_NAME}"
if ! timeout "${SYSTEMCTL_TIMEOUT}" sudo -n systemctl --no-ask-password restart "${SERVICE_NAME}"; then
  echo "Restart did not finish within ${SYSTEMCTL_TIMEOUT}s" >&2
  sudo -n systemctl --no-pager --full status "${SERVICE_NAME}" || true
  exit 1
fi

echo "Service status"
sudo -n systemctl --no-pager --full status "${SERVICE_NAME}"