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/*
 * Copyright (c) 2023 SPARQL Anything Contributors @ http://github.com/sparql-anything
 *
 * 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 io.github.sparqlanything.fuseki;

import freemarker.template.Configuration;
import freemarker.template.Template;
import freemarker.template.TemplateException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;

public class YASGUIServlet extends HttpServlet {
	final static Logger logger = LoggerFactory.getLogger(YASGUIServlet.class);
	private static final long serialVersionUID = 1L;

	private String fxPrefix, endpointPath;

	public YASGUIServlet(String fxPrefix, String endpointPath) {
		this.fxPrefix = fxPrefix;
		this.endpointPath = endpointPath;
	}

	public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
		res.setContentType("text/html");// setting the content type
		
		Configuration c = TransformerConfiguration.getInstance().getFreemarkerCfg();
		c.setClassForTemplateLoading(this.getClass(), "");
		Template temp = c.getTemplate("yasgui.ftlh");

		Map var = new HashMap<>();
		var.put("sparqlPath", this.endpointPath);
		var.put("fxPrefix", this.fxPrefix);

		PrintWriter pw = res.getWriter();
//		StringWriter sw = new StringWriter();
		try {
			temp.process(var, pw);
//			temp.process(var, sw);
		} catch (TemplateException | IOException e1) {
			logger.error("",e1);
		}
		pw.close();
//		System.out.println(sw.toString());
	}
}