#!/usr/bin/env bash
set -euo pipefail
source ./lib.sh

install -d /etc/letsencrypt/renewal-hooks/deploy

# --- 50: Symlink-Hook (setzt stabile /etc/ssl/{ui,webmail,mail}) ---
cat >/etc/letsencrypt/renewal-hooks/deploy/50-mailwolt-symlinks.sh <<HOOK
#!/usr/bin/env bash
set -euo pipefail

UI_SSL_DIR="/etc/ssl/ui"
WEBMAIL_SSL_DIR="/etc/ssl/webmail"
MAIL_SSL_DIR="/etc/ssl/mail"

UI_HOST="${UI_HOST}"
WEBMAIL_HOST="${WEBMAIL_HOST}"
MX_HOST="${MAIL_HOSTNAME}"

link_if() {
  local host="\$1" target_dir="\$2"
  [[ -z "\$host" ]] && return 0
  local le="/etc/letsencrypt/live/\${host}"
  local cert="\${le}/fullchain.pem"
  local key="\${le}/privkey.pem"
  [[ -f "\$cert" && -f "\$key" ]] || return 0
  install -d -m 0755 "\$target_dir"
  ln -sf "\$cert" "\${target_dir}/fullchain.pem"
  ln -sf "\$key"  "\${target_dir}/privkey.pem"
  echo "[+] Linked \${target_dir} -> \${le}"
}

link_if "${UI_HOST}"      "\${UI_SSL_DIR}"
link_if "${WEBMAIL_HOST}" "\${WEBMAIL_SSL_DIR}"
link_if "${MX_HOST}"      "\${MAIL_SSL_DIR}"

systemctl reload nginx || true
systemctl reload postfix dovecot || true
HOOK
chmod +x /etc/letsencrypt/renewal-hooks/deploy/50-mailwolt-symlinks.sh

# --- 60: TLSA-Hook (bei jedem Renew für MX neu berechnen – falls Key doch rotiert) ---
cat >/etc/letsencrypt/renewal-hooks/deploy/60-mailwolt-tlsa.sh <<HOOK
#!/usr/bin/env bash
set -euo pipefail
MX_HOST="${MAIL_HOSTNAME}"

# Nur reagieren, wenn das MX-Zert erneuert wurde
case " \${RENEWED_DOMAINS:-} " in
  *" \${MX_HOST} "*) ;;
  *) exit 0 ;;
esac

CERT="\${RENEWED_LINEAGE}/fullchain.pem"
if [[ -s "\$CERT" ]]; then
  HASH="\$(openssl x509 -in "\$CERT" -noout -pubkey \
    | openssl pkey -pubin -outform DER \
    | openssl dgst -sha256 | sed 's/^.*= //')"
  TLSA_LINE="_25._tcp.\${MX_HOST}. IN TLSA 3 1 1 \${HASH}"
  install -d -m 0755 /etc/mailwolt/dns
  echo "\${TLSA_LINE}" > "/etc/mailwolt/dns/\${MX_HOST}.tlsa.txt"
  echo "[TLSA] \${TLSA_LINE}"
fi
HOOK
chmod +x /etc/letsencrypt/renewal-hooks/deploy/60-mailwolt-tlsa.sh