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// Generated by delombok at Mon Jul 31 05:34:41 UTC 2023
package org.lognet.springboot.grpc.security;

import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import org.springframework.security.core.Authentication;

class AuthenticationSchemeService
    implements AuthenticationSchemeRegistry, AuthenticationSchemeSelector {
  @java.lang.SuppressWarnings("all")
  private static final org.slf4j.Logger log =
      org.slf4j.LoggerFactory.getLogger(AuthenticationSchemeService.class);

  private List selectors = new ArrayList<>();

  @Override
  public Optional getAuthScheme(CharSequence authorization) {
    final List auth =
        selectors.stream()
            .map(selector -> selector.getAuthScheme(authorization))
            .filter(Optional::isPresent)
            .map(Optional::get)
            .toList();
    switch (auth.size()) {
      case 0:
        log.error(
            String.format(
                "Authentication scheme \'%s\' is not supported.",
                Optional.ofNullable(authorization)
                    .map(s -> s.toString().split(" ", 2)[0])
                    .orElse(null)));
        return Optional.empty();
      case 1:
        return Optional.of(auth.get(0));
      default:
        throw new IllegalStateException(
            "Ambiguous authentication scheme " + authorization.toString());
    }
  }

  @Override
  public AuthenticationSchemeRegistry register(AuthenticationSchemeSelector selector) {
    selectors.add(selector);
    return this;
  }
}