// Copyright 2018 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.security.tls;

import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Optional;

/**
 * Utility class for retrieving {@link TransportSecurityOptions} from the system.
 *
 * @author bjorncs
 */
public class TransportSecurityUtils {

    public static final String CONFIG_FILE_ENVIRONMENT_VARIABLE = "VESPA_TLS_CONFIG_FILE";
    public static final String INSECURE_MIXED_MODE_ENVIRONMENT_VARIABLE = "VESPA_TLS_INSECURE_MIXED_MODE";

    public enum MixedMode {
        PLAINTEXT_CLIENT_MIXED_SERVER("plaintext_client_mixed_server"),
        TLS_CLIENT_MIXED_SERVER("tls_client_mixed_server");

        final String configValue;

        MixedMode(String configValue) {
            this.configValue = configValue;
        }

        static MixedMode fromConfigValue(String configValue) {
            return Arrays.stream(values())
                    .filter(v -> v.configValue.equals(configValue))
                    .findFirst()
                    .orElseThrow(() -> new IllegalArgumentException("Unknown value: " + configValue));
        }
    }

    private TransportSecurityUtils() {}

    public static boolean isTransportSecurityEnabled() {
        return getConfigFile().isPresent();
    }

    public static boolean isInsecureMixedModeEnabled() {
        return getInsecureMixedMode().isPresent();
    }

    public static Optional<MixedMode> getInsecureMixedMode() {
        if (!isTransportSecurityEnabled()) return Optional.empty();
        return getEnvironmentVariable(INSECURE_MIXED_MODE_ENVIRONMENT_VARIABLE)
                .map(MixedMode::fromConfigValue);
    }

    public static Optional<Path> getConfigFile() {
        return getEnvironmentVariable(CONFIG_FILE_ENVIRONMENT_VARIABLE).map(Paths::get);
    }

    public static Optional<TransportSecurityOptions> getOptions() {
        return getConfigFile()
                .map(TransportSecurityOptions::fromJsonFile);
    }

    private static Optional<String> getEnvironmentVariable(String environmentVariable) {
        return Optional.ofNullable(System.getenv(environmentVariable))
                .filter(var -> !var.isEmpty());
    }
}

@@ -890,24 +890,105 @@
 %0A        %7D%0A%0A
+        public String configValue() %7B%0A            return configValue;%0A        %7D%0A%0A
         stat

Add getter for configValue