#!/bin/bash
set -euo pipefail

here="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
site=meweb.arasaka.software
names=(meweb.arasaka.software v4.meweb.arasaka.software v6.meweb.arasaka.software)
app=/var/www/$site
backups=/var/backups/$site
etc=/etc/meweb
env=$etc/meweb.env
unit=/etc/systemd/system/meweb.service
sudoers=/etc/sudoers.d/gitea-runner
acme=/root/.acme.sh/acme.sh
cert=/root/.acme.sh/${site}_ecc/fullchain.cer

[ "$(id -u)" = 0 ] || { echo "run as root"; exit 1; }

id meweb >/dev/null 2>&1 || useradd --system --no-create-home --shell /usr/sbin/nologin meweb
install -d -o gitea-runner -g gitea-runner -m 755 "$app" "$backups"
install -d -o root -g meweb -m 750 "$etc"
if [ ! -f "$env" ]; then
  printf '%s\n' \
    'ASPNETCORE_ENVIRONMENT=Production' \
    'ASPNETCORE_URLS=http://127.0.0.1:5480' \
    'DOTNET_PRINT_TELEMETRY_MESSAGE=false' \
    'DOTNET_CLI_TELEMETRY_OPTOUT=1' > "$env"
  chown root:meweb "$env"
  chmod 640 "$env"
  echo "wrote $env"
fi

install -m 644 "$here/meweb.service" "$unit"
systemctl daemon-reload
systemctl enable meweb.service >/dev/null 2>&1

line="gitea-runner ALL=(root) NOPASSWD: /usr/bin/systemctl start meweb, /usr/bin/systemctl stop meweb, /usr/bin/systemctl restart meweb, /usr/bin/systemctl is-active meweb, /usr/bin/systemctl show meweb*, /usr/bin/systemctl status meweb*"
if ! grep -qF "$line" "$sudoers"; then
  cp "$sudoers" "$sudoers.new"
  echo "$line" >> "$sudoers.new"
  visudo -cf "$sudoers.new" >/dev/null
  install -m 440 "$sudoers.new" "$sudoers"
  rm -f "$sudoers.new"
  echo "sudoers: meweb added for gitea-runner"
fi

if [ ! -f "$cert" ]; then
  install -m 644 "$here/nginx/$site.http.conf" "/etc/nginx/sites-enabled/$site.conf"
  nginx -t
  systemctl reload nginx
  args=()
  for name in "${names[@]}"; do args+=(-d "$name"); done
  "$acme" --issue --webroot /var/www/acme "${args[@]}" --keylength ec-256 --reloadcmd "systemctl reload nginx"
fi

install -m 644 "$here/nginx/$site.conf" "/etc/nginx/sites-enabled/$site.conf"
nginx -t
systemctl reload nginx

if [ -x "$app/MeWeb.Server" ]; then
  systemctl restart meweb
  systemctl is-active meweb
else
  echo "no build in $app yet: the release workflow deploys it"
fi
echo "setup done"