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// Copyright (c) 2013-2024 xipki. All rights reserved.
// License Apache License 2.0

package org.xipki.ca.mgmt.shell;

import org.xipki.security.SecurityFactory;
import org.xipki.util.Args;
import org.xipki.util.Base64;
import org.xipki.util.ConfPairs;
import org.xipki.util.IoUtil;
import org.xipki.util.StringUtil;

import java.util.Optional;

/**
 * Util class.
 *
 * @author Lijun Liao (xipki)
 * @since 2.0.0
 */

public class ShellUtil {

  private ShellUtil() {
  }

  public static String canonicalizeSignerConf(String keystoreType, String signerConf, SecurityFactory securityFactory)
          throws Exception {
    Args.notBlank(keystoreType, "keystoreType");
    Args.notBlank(signerConf, "signerConf");
    Args.notNull(securityFactory, "securityFactory");

    if (!signerConf.contains("file:") && !signerConf.contains("base64:")
        && !signerConf.contains("FILE:") && !signerConf.contains("BASE64:")) {
      return signerConf;
    }

    ConfPairs pairs = new ConfPairs(signerConf);
    String keystoreConf = pairs.value("keystore");
    Optional.ofNullable(pairs.value("password")).orElseThrow(
        () -> new IllegalArgumentException("password is not set in " + signerConf));

    byte[] keystoreBytes;
    if (StringUtil.startsWithIgnoreCase(keystoreConf, "file:")) {
      String keystoreFile = keystoreConf.substring("file:".length());
      keystoreBytes = IoUtil.read(keystoreFile);
    } else if (StringUtil.startsWithIgnoreCase(keystoreConf, "base64:")) {
      keystoreBytes = Base64.decode(keystoreConf.substring("base64:".length()));
    } else {
      return signerConf;
    }

    pairs.putPair("keystore", "base64:" + Base64.encodeToString(keystoreBytes));
    return pairs.getEncoded();
  } // method canonicalizeSignerConf

}