/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

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 */

package jdk.internal.management.remote.rest.http;

import jdk.internal.management.remote.rest.json.JSONObject;

import jdk.internal.management.remote.rest.json.JSONPrimitive;

import java.io.PrintWriter;

import java.io.StringWriter;

import java.net.HttpURLConnection;

/**

 * Container class for standard HTTP reponses. Returns a JSON string for status

 */

public class HttpResponse {

    public static final HttpResponse OK = new HttpResponse(HttpURLConnection.HTTP_OK, "Success");

    public static final HttpResponse SERVER_ERROR = new HttpResponse(HttpURLConnection.HTTP_INTERNAL_ERROR, "Internal server error");

    public static final HttpResponse METHOD_NOT_ALLOWED = new HttpResponse(HttpURLConnection.HTTP_BAD_METHOD, "Method not allowed");

    public static final HttpResponse BAD_REQUEST = new HttpResponse(HttpURLConnection.HTTP_BAD_REQUEST, "Bad request");

    public static final HttpResponse REQUEST_NOT_FOUND = new HttpResponse(HttpURLConnection.HTTP_NOT_FOUND, "Request not found");

    private final int code;

    private final String message;

    private final String body;

    public HttpResponse(int code, String message) {

        this(code, message, "");

    }

    public HttpResponse(String message) {

        this(200,message,"");

    }

    public HttpResponse(int code, String message, String detail) {

        this.code = code;

        this.message = message;

        if (code != HttpURLConnection.HTTP_OK) {

            JSONObject jobj = new JSONObject();

            jobj.put("status", new JSONPrimitive(code));

            jobj.put("message", new JSONPrimitive(message));

            if (detail != null && !detail.isEmpty()) {

                jobj.put("details", new JSONPrimitive(detail));

            }

            this.body = jobj.toJsonString();

        } else {

            this.body = message;

        }

    }

    public HttpResponse(HttpResponse response, String detail) {

        this(response.code, response.message, detail);

    }

    public int getCode() {

        return code;

    }

    public String getBody() {

        return body;

    }

    public static String getErrorMessage(Exception ex) {

        StringWriter sw = new StringWriter();

        PrintWriter pw = new PrintWriter(sw);

        ex.printStackTrace(pw);

        return sw.toString();

    }

}