#!/bin/sh
set -eu

if [ "$(id -u)" -ne 0 ]; then
  echo "Запустите команду установки от root." >&2
  exit 1
fi
if [ -z "${DASHBOARD_URL:-}" ] || [ -z "${ENROLL_TOKEN:-}" ]; then
  echo "Не заданы DASHBOARD_URL и ENROLL_TOKEN. Создайте команду в настройках Dashboard." >&2
  exit 1
fi

GITEA_URL=${GITEA_URL:-https://git.myown.center}
GITEA_REPOSITORY=${GITEA_REPOSITORY:-maxim/ProxmoxDash}
VMID=${VMID:-0}
AGENT_NAME=${AGENT_NAME:-$(hostname)}

release_json=$(curl -fsSL "$GITEA_URL/api/v1/repos/$GITEA_REPOSITORY/releases/latest")
download_url=$(printf '%s' "$release_json" | sed -n 's/.*"browser_download_url":"\([^"]*\/proxmox-dashboard-linux-amd64\)".*/\1/p' | head -n 1)
if [ -z "$download_url" ]; then
  echo "В последнем релизе не найден Linux-бинарник." >&2
  exit 1
fi

install -d -m 0700 /var/lib/proxmox-dashboard-agent
temporary_binary=$(mktemp /tmp/proxmox-dashboard-agent.XXXXXX)
trap 'rm -f "$temporary_binary"' EXIT
curl -fsSL "$download_url" -o "$temporary_binary"
install -m 0755 "$temporary_binary" /var/lib/proxmox-dashboard-agent/proxmox-dashboard-agent

umask 077
{
  printf 'DASHBOARD_URL=%s\n' "$DASHBOARD_URL"
  printf 'ENROLL_TOKEN=%s\n' "$ENROLL_TOKEN"
  printf 'AGENT_NAME=%s\n' "$AGENT_NAME"
  printf 'VMID=%s\n' "$VMID"
} > /etc/proxmox-dashboard-agent.env

cat > /etc/systemd/system/proxmox-dashboard-agent.service <<'UNIT'
[Unit]
Description=Proxmox Dashboard read-only guest agent
After=network-online.target docker.service
Wants=network-online.target

[Service]
Type=simple
EnvironmentFile=/etc/proxmox-dashboard-agent.env
ExecStart=/var/lib/proxmox-dashboard-agent/proxmox-dashboard-agent --agent --agent-server ${DASHBOARD_URL} --agent-enroll-token ${ENROLL_TOKEN} --agent-name ${AGENT_NAME} --agent-vmid ${VMID}
Restart=always
RestartSec=5
NoNewPrivileges=true
ProtectHome=true
PrivateTmp=true
ProtectSystem=strict
ReadWritePaths=/var/lib/proxmox-dashboard-agent

[Install]
WantedBy=multi-user.target
UNIT

systemctl daemon-reload
systemctl enable proxmox-dashboard-agent.service
systemctl restart proxmox-dashboard-agent.service
rm -f /usr/local/bin/proxmox-dashboard-agent
echo "Агент установлен. Через несколько секунд он появится в Dashboard."