#!/usr/bin/env bash
# One-time root setup on Max for PrivaPub at privapub.thepra.dev. Idempotent.
#   rsync -a -e $MAX/ssh.sh deploy/ root@nuvola.xyz:/root/privapub-deploy/
#   $MAX/run.sh bash /root/privapub-deploy/max/setup.sh
set -euo pipefail
SRC="${1:-/root/privapub-deploy}"
HOST=privapub.thepra.dev
UNIT=privapub
RUNNER=build-runner
ACME=/root/.acme.sh/acme.sh

echo "== directories"
install -d -o "$RUNNER" -g www-data -m 755 /var/www/$HOST
install -d -o "$RUNNER" -g "$RUNNER" -m 750 /var/backups/$HOST
install -d -o www-data -g www-data -m 750 /var/lib/privapub /var/lib/privapub/mongo

echo "== sudoers"
SUDOERS=/etc/sudoers.d/$RUNNER
touch "$SUDOERS"; chmod 440 "$SUDOERS"
grep -qF "systemctl start $UNIT," "$SUDOERS" || echo "$RUNNER ALL=(root) NOPASSWD: /usr/bin/systemctl start $UNIT, /usr/bin/systemctl stop $UNIT, /usr/bin/systemctl restart $UNIT, /usr/bin/systemctl is-active $UNIT, /usr/bin/systemctl show $UNIT*, /usr/bin/systemctl status $UNIT*" >> "$SUDOERS"
visudo -cf "$SUDOERS"

echo "== units"
install -m 644 "$SRC/systemd/privapub-mongod.service" /etc/systemd/system/privapub-mongod.service
install -m 644 "$SRC/systemd/$UNIT.service" /etc/systemd/system/$UNIT.service
systemctl daemon-reload
systemctl enable --now privapub-mongod >/dev/null
systemctl enable $UNIT >/dev/null
systemctl is-active privapub-mongod

echo "== nginx snippet and bootstrap vhost"
install -m 644 "$SRC/nginx/privapub-headers.conf" /etc/nginx/snippets/privapub-headers.conf
if [ -f /root/.acme.sh/${HOST}_ecc/fullchain.cer ]; then
	install -m 644 "$SRC/nginx/$HOST.conf" /etc/nginx/sites-available/$HOST.conf
else
	awk '/^server \{/{n++} n==1' "$SRC/nginx/$HOST.conf" > /etc/nginx/sites-available/$HOST.conf
fi
ln -sf /etc/nginx/sites-available/$HOST.conf /etc/nginx/sites-enabled/$HOST.conf
nginx -t
systemctl reload nginx

echo "== certificate"
if [ -f /root/.acme.sh/${HOST}_ecc/fullchain.cer ]; then
	echo "$HOST: certificate present"
else
	$ACME --issue --server letsencrypt -d $HOST -w /var/www/acme --renew-hook "systemctl reload nginx"
fi

echo "== full vhost"
install -m 644 "$SRC/nginx/$HOST.conf" /etc/nginx/sites-available/$HOST.conf
nginx -t
systemctl reload nginx
echo "setup complete"