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Lightweight multi-platform REST

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/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.httprpc;

import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.httprpc.beans.BeanAdapter;
import org.httprpc.io.TemplateEncoder;
import org.httprpc.util.ResourceBundleAdapter;

import java.io.IOException;
import java.util.ResourceBundle;

import static org.httprpc.util.Collections.entry;
import static org.httprpc.util.Collections.mapOf;

/**
 * Generates an index of all active services.
 */
public class IndexServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
        response.setContentType("text/html;charset=UTF-8");

        TemplateEncoder templateEncoder = new TemplateEncoder(WebService.class.getResource("index.html"));

        ResourceBundle resourceBundle = ResourceBundle.getBundle(WebService.class.getPackage().getName() + ".index", request.getLocale());

        templateEncoder.write(mapOf(
            entry("labels", new ResourceBundleAdapter(resourceBundle)),
            entry("contextPath", request.getContextPath()),
            entry("services", BeanAdapter.adapt(WebService.getServiceDescriptors()))
        ), response.getOutputStream());
    }
}