/*
 * This file is part of onkostar-plugin-dnpm
 *
 * Copyright (C) 2023-2026 the original author or authors.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package dev.dnpm.oshelper.security;

import java.util.List;
import javax.sql.DataSource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Service;

/** Service mit Methoden zum Feststellen von sicherheitsrelevanten Informationen eines Benutzers */
@Service
public class SecurityService {

  private final JdbcTemplate jdbcTemplate;

  public SecurityService(final DataSource dataSource) {
    this.jdbcTemplate = new JdbcTemplate(dataSource);
  }

  List<String> getPersonPoolIdsForPermission(
      Authentication authentication, PermissionType permissionType) {
    var sql =
        "SELECT p.kennung FROM personenstamm_zugriff "
            + " JOIN usergroup u ON personenstamm_zugriff.benutzergruppe_id = u.id "
            + " JOIN akteur_usergroup au ON u.id = au.usergroup_id "
            + " JOIN akteur a ON au.akteur_id = a.id "
            + " JOIN personenstamm p on personenstamm_zugriff.personenstamm_id = p.id "
            + " WHERE a.login = ? AND a.aktiv AND a.anmelden_moeglich ";

    if (PermissionType.READ_WRITE == permissionType) {
      sql += " AND personenstamm_zugriff.bearbeiten ";
    }

    var userDetails = (UserDetails) authentication.getPrincipal();

    return jdbcTemplate.query(
        sql, new Object[] {userDetails.getUsername()}, (rs, rowNum) -> rs.getString("kennung"));
  }

  List<String> getFormNamesForPermission(
      Authentication authentication, PermissionType permissionType) {

    var sql =
        "SELECT df.name FROM formular_usergroup_zugriff "
            + " JOIN data_form df ON formular_usergroup_zugriff.formular_id = df.id "
            + " JOIN usergroup u ON formular_usergroup_zugriff.usergroup_id = u.id "
            + " JOIN akteur_usergroup au ON u.id = au.usergroup_id "
            + " JOIN akteur a on au.akteur_id = a.id "
            + " WHERE a.login = ? AND a.aktiv AND a.anmelden_moeglich ";

    if (PermissionType.READ_WRITE == permissionType) {
      sql += " AND formular_usergroup_zugriff.bearbeiten ";
    }

    var userDetails = (UserDetails) authentication.getPrincipal();

    return jdbcTemplate.query(
        sql, new Object[] {userDetails.getUsername()}, (rs, rowNum) -> rs.getString("name"));
  }
}