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

: "${UPTIMELINK_CONTROLLER_URL:?UPTIMELINK_CONTROLLER_URL is required}"
: "${UPTIMELINK_RUNNER_ID:?UPTIMELINK_RUNNER_ID is required}"
: "${UPTIMELINK_RUNNER_TOKEN:?UPTIMELINK_RUNNER_TOKEN is required}"

target_port="${UPTIMELINK_TARGET_PORT:-18081}"

install -d -m 0755 /opt/uptimerunner /etc/uptimerunner

cd /uptime.link/uptimerunner
deno compile \
  --allow-net \
  --allow-read \
  --allow-write \
  --allow-run \
  --allow-env \
  --allow-sys \
  --output /opt/uptimerunner/uptimerunner \
  mod.ts

chmod +x /opt/uptimerunner/uptimerunner
ln -sf /opt/uptimerunner/uptimerunner /usr/local/bin/uptimerunner

cat >/opt/uptimerunner/target-server.ts <<'DENO'
const port = Number(Deno.env.get('UPTIMELINK_TARGET_PORT') ?? '18081');

Deno.serve({ hostname: '127.0.0.1', port }, () => {
  return new Response('runner-local healthy\n', {
    headers: { 'content-type': 'text/plain' },
  });
});
DENO

cat >/etc/systemd/system/uptimerunner-target.service <<SYSTEMD
[Unit]
Description=uptime.link Vagrant target service
After=network-online.target
Wants=network-online.target

[Service]
ExecStart=/usr/local/bin/deno run --allow-net --allow-env /opt/uptimerunner/target-server.ts
Restart=always
RestartSec=2
User=root
Group=root
Environment=UPTIMELINK_TARGET_PORT=${target_port}

[Install]
WantedBy=multi-user.target
SYSTEMD

uptimerunner config write \
  --url "${UPTIMELINK_CONTROLLER_URL}" \
  --runner-id "${UPTIMELINK_RUNNER_ID}" \
  --token "${UPTIMELINK_RUNNER_TOKEN}" \
  --labels 'scenario:vagrant,role:internal' \
  --interval 1000 \
  --concurrency 2

uptimerunner service install
systemctl daemon-reload
systemctl reset-failed uptimerunner-target.service || true
systemctl enable --now uptimerunner-target.service

for _ in $(seq 1 30); do
  if curl -fsS "http://127.0.0.1:${target_port}/health" >/dev/null 2>&1; then
    break
  fi
  sleep 1
done

curl -fsS "http://127.0.0.1:${target_port}/health" >/dev/null
systemctl restart uptimerunner.service