#!/bin/bash
# PostgreSQL 17 на Ubuntu — пользователь и БД для магазина
# Запуск: sudo bash scripts/setup-postgres-ubuntu.sh
set -euo pipefail

DB_USER="${DB_USER:-shop}"
DB_PASS="${DB_PASS:-shop}"
DB_NAME="${DB_NAME:-shop}"

if ! command -v psql >/dev/null; then
  echo "Установите PostgreSQL 17:"
  echo "  apt install -y postgresql-17 postgresql-client-17"
  exit 1
fi

sudo -u postgres psql -v ON_ERROR_STOP=1 <<EOF
DO \$\$
BEGIN
  IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = '${DB_USER}') THEN
    CREATE ROLE ${DB_USER} LOGIN PASSWORD '${DB_PASS}';
  END IF;
END
\$\$;

SELECT 'CREATE DATABASE ${DB_NAME} OWNER ${DB_USER}'
WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '${DB_NAME}')\gexec

GRANT ALL PRIVILEGES ON DATABASE ${DB_NAME} TO ${DB_USER};
EOF

echo ""
echo "DATABASE_URL=postgresql://${DB_USER}:${DB_PASS}@127.0.0.1:5432/${DB_NAME}"