/*
 * MIT License
 *
 * Copyright (c) 2020-present Cloudogu GmbH and Contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
    
package sonia.scm.web.security;

import com.google.common.collect.Sets;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sonia.scm.plugin.Extension;
import sonia.scm.security.Role;

@Extension
public class AdministrationContextRealm extends AuthorizingRealm {

  private static final Logger LOG = LoggerFactory.getLogger(AdministrationContextRealm.class);

  public AdministrationContextRealm() {
    setName(DefaultAdministrationContext.REALM);
  }

  @Override
  protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
    AdministrationContextMarker marker = principals.oneByType(AdministrationContextMarker.class);
    if (marker == AdministrationContextMarker.MARKER) {
      LOG.info("assign admin permissions to admin context user {}", principals.getPrimaryPrincipal());
      SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo(Sets.newHashSet(Role.USER));
      authorizationInfo.setStringPermissions(Sets.newHashSet("*"));
      return authorizationInfo;
    }
    return null;
  }

  @Override
  protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) {
    // we make no authentication we do only authorization
    return null;
  }
}
