package org.jboss.resteasy.microprofile.config;

import java.io.Serializable;
import java.util.Collections;
import java.util.Map;
import java.util.Set;

import org.eclipse.microprofile.config.spi.ConfigSource;

I know this implementation is weird, but we do this for two reasons
1. So that resteasy doesn't require servlet
2. Because Graal VM will barf with an unhandled reference if we reference servlet classes directly
/**
 * I know this implementation is weird, but we do this for two reasons
 * 1. So that resteasy doesn't require servlet
 * 2. Because Graal VM will barf with an unhandled reference if we reference servlet classes directly
 *
 */
public class BaseServletConfigSource implements Serializable {
   private static final long serialVersionUID = -6039524571117729233L;
   protected ConfigSource source;
    protected final boolean available;

    public BaseServletConfigSource(final boolean available, final Class<?> sourceClass) {
        this.available = available;
        if (available) {
            try {
                source = (ConfigSource)sourceClass.newInstance();
            } catch (Throwable e) {
                throw new RuntimeException(e);
            }
        }
    }

    public Map<String, String> getProperties() {
       if (!available) {
          return Collections.<String, String>emptyMap();
       }
       return source.getProperties();
    }

    public String getValue(String propertyName) {
       if (!available) {
          return null;
       }
       return source.getValue(propertyName);
    }

    public String getName() {
       return source.getName();
    }

    public Set<String> getPropertyNames() {
        return source.getPropertyNames();
    }
}