#!/bin/bash
# نصب BIND9 و فعال‌سازی zone modstagram.com روی سرور Asiatech
# اجرا: bash install-bind9.sh

set -e

ZONE_FILE="/etc/bind/db.modstagram.com"
SOURCE="$(dirname "$0")/modstagram.com.zone"

apt-get update
apt-get install -y bind9 bind9utils

cp "$SOURCE" "$ZONE_FILE"
chown root:bind "$ZONE_FILE"
chmod 644 "$ZONE_FILE"

if ! grep -q 'zone "modstagram.com"' /etc/bind/named.conf.local 2>/dev/null; then
  cat >> /etc/bind/named.conf.local << 'EOF'

zone "modstagram.com" {
    type master;
    file "/etc/bind/db.modstagram.com";
};
EOF
fi

# اجازه query از بیرون
OPTIONS_FILE="/etc/bind/named.conf.options"
if grep -q 'allow-query' "$OPTIONS_FILE"; then
  sed -i 's/allow-query { any; };/allow-query { any; };/' "$OPTIONS_FILE" || true
else
  sed -i '/recursion yes;/a \        allow-query { any; };' "$OPTIONS_FILE" || true
fi

named-checkconf
named-checkzone modstagram.com "$ZONE_FILE"

systemctl enable bind9
systemctl restart bind9

echo ""
echo "BIND9 OK. تست محلی:"
dig @127.0.0.1 api.modstagram.com +short
echo ""
echo "قدم بعد: در پنل رجیسترار NS را به ns1.modstagram.com و ns2.modstagram.com تغییر دهید + Glue records"