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/*
 * Copyright 2024 gematik GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.gematik.bbriccs.smartcards;

import static java.text.MessageFormat.format;

import javax.security.auth.x500.X500Principal;
import lombok.extern.slf4j.Slf4j;
import lombok.val;

@Slf4j
public final class LdapReader {

  private LdapReader() {
    throw new UnsupportedOperationException();
  }

  public static SmartcardOwnerData getOwnerData(X500Principal subject) {
    return getOwnerData(subject.getName());
  }

  public static SmartcardOwnerData getOwnerData(String subject) {
    val builder = SmartcardOwnerData.builder();
    val fixedName = subject.replace("+", ",");
    val elements = fixedName.split(",");

    for (val rdn : elements) {
      val token = rdn.split("=");
      val key = token[0].trim();
      val value = token[1].trim();

      switch (key.toUpperCase()) {
        case "CN" -> builder.commonName(value);
        case "T" -> builder.title(value);
        case "GIVENNAME", "GN" -> builder.givenName(value);
        case "SURNAME" -> builder.surname(value);
        case "STREET" -> builder.street(value);
        case "POSTALCODE" -> builder.postalCode(value);
        case "O" -> builder.organization(value);
        case "OU" -> builder.organizationUnit(value);
        case "L" -> builder.locality(value);
        case "C" -> builder.country(value);
        default -> log.trace(
            format("ignore key {0} with value {1} in subject {2}", key, value, subject));
      }
    }

    return builder.build();
  }
}