/*******************************************************************************
 * Copyright (c) 2012-2016 Codenvy, S.A.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   Codenvy, S.A. - initial API and implementation
 *******************************************************************************/
package org.everrest.guice;

import com.google.inject.Key;

import java.lang.annotation.Annotation;

/**
 * Guice key that allows remap URI template of service. Example of usage in guice module:
 * <pre>
 *     bind(ServiceBindingKey.of(MyService.class, "/my_path")).to(MyService.class);
 * </pre>
 *
 * @author andrew00x
 */
public class ServiceBindingHelper {
    private ServiceBindingHelper() {
    }

    public static <T> Key<T> bindingKey(Class<T> clazz, String path) {
        return Key.get(clazz, new BindingPathImpl(path));
    }

    static class BindingPathImpl implements BindingPath {
        private final String value;

        BindingPathImpl(String value) {
            this.value = value;
        }

        @Override
        public String value() {
            return value;
        }

        @Override
        public Class<? extends Annotation> annotationType() {
            return BindingPath.class;
        }

        @Override
        public int hashCode() {
            return (127 * "value".hashCode()) ^ value.hashCode();
        }

        @Override
        public boolean equals(Object o) {
            return o instanceof BindingPath && value.equals(((BindingPath)o).value());
        }

        @Override
        public String toString() {
            return "@BindingPath('" + value + "')";
        }
    }
}