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

INSTALL_DIR="/opt/pve-cloud-backup"
BACKEND_DIR="$INSTALL_DIR/backend"
FRONTEND_DIR="$INSTALL_DIR/frontend"
STATIC_DIR="$INSTALL_DIR/static"
DATA_DIR="$INSTALL_DIR/data"
LOG_DIR="$INSTALL_DIR/logs"

if [[ "$(id -u)" -ne 0 ]]; then
  echo "Run as root. The services need pvesh access and systemd installation." >&2
  exit 1
fi

if [[ ! -d "$INSTALL_DIR" ]]; then
  echo "$INSTALL_DIR does not exist. Copy the application files there first." >&2
  exit 1
fi

mkdir -p "$BACKEND_DIR" "$FRONTEND_DIR" "$STATIC_DIR" "$DATA_DIR" "$LOG_DIR" "$INSTALL_DIR/scripts"

command -v python3 >/dev/null || { echo "python3 is required" >&2; exit 1; }
command -v npm >/dev/null || { echo "npm is required to build the Vue frontend" >&2; exit 1; }

python3 -m venv "$BACKEND_DIR/.venv"
"$BACKEND_DIR/.venv/bin/pip" install --upgrade pip
"$BACKEND_DIR/.venv/bin/pip" install -r "$BACKEND_DIR/requirements.txt"

cd "$FRONTEND_DIR"
if [[ -f package-lock.json ]]; then
  npm ci
else
  npm install
fi
npm run build

cd "$BACKEND_DIR"
"$BACKEND_DIR/.venv/bin/python" -c 'from app.migrations import run_migrations; run_migrations()'

install -m 0644 "$INSTALL_DIR/systemd/pve-cloud-backup-web.service" /etc/systemd/system/pve-cloud-backup-web.service
install -m 0644 "$INSTALL_DIR/systemd/pve-cloud-backup-worker.service" /etc/systemd/system/pve-cloud-backup-worker.service

systemctl daemon-reload
systemctl enable --now pve-cloud-backup-web.service
systemctl enable --now pve-cloud-backup-worker.service

echo "Installed. Open http://<server>:8080 and complete the setup wizard."