/*

 * Copyright (c) 2015, 2016, 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

 */

package java.net.http;

import java.util.Locale;

import sun.util.logging.PlatformLogger;

/**

 * -Djava.net.HttpClient.log=errors,requests,headers,frames[:type:type2:..],content

 *

 * Any of errors, requests, headers or content are optional.

 *

 * Other handlers may be added. All logging is at level INFO

 *

 * Logger name is "java.net.http.HttpClient"

 */

class Log {

    final static String logProp = "java.net.http.HttpClient.log";

    public static final int OFF = 0;

    public static final int ERRORS = 0x1;

    public static final int REQUESTS = 0x2;

    public static final int HEADERS = 0x4;

    public static final int CONTENT = 0x8;

    public static final int FRAMES = 0x10;

    public static final int SSL = 0x20;

    static int logging;

    // Frame types: "control", "data", "window", "all"

    public static final int CONTROL = 1; // all except DATA and WINDOW_UPDATES

    public static final int DATA = 2;

    public static final int WINDOW_UPDATES = 4;

    public static final int ALL = CONTROL| DATA | WINDOW_UPDATES;

    static int frametypes;

    static sun.util.logging.PlatformLogger logger;

    static {

        String s = Utils.getNetProperty(logProp);

        if (s == null) {

            logging = OFF;

        } else {

            String[] vals = s.split(",");

            for (String val : vals) {

                switch (val.toLowerCase(Locale.US)) {

                    case "errors":

                        logging |= ERRORS;

                        break;

                    case "requests":

                        logging |= REQUESTS;

                        break;

                    case "headers":

                        logging |= HEADERS;

                        break;

                    case "content":

                        logging |= CONTENT;

                        break;

                    case "ssl":

                        logging |= SSL;

                        break;

                    case "all":

                        logging |= CONTENT|HEADERS|REQUESTS|FRAMES|ERRORS;

                        break;

                }

                if (val.startsWith("frames")) {

                    logging |= FRAMES;

                    String[] types = val.split(":");

                    if (types.length == 1) {

                        frametypes = CONTROL | DATA | WINDOW_UPDATES;

                    } else {

                        for (String type : types) {

                            switch (type.toLowerCase()) {

                                case "control":

                                    frametypes |= CONTROL;

                                    break;

                                case "data":

                                    frametypes |= DATA;

                                    break;

                                case "window":

                                    frametypes |= WINDOW_UPDATES;

                                    break;

                                case "all":

                                    frametypes = ALL;

                                    break;

                            }

                        }

                    }

                }

            }

        }

        if (logging != OFF) {

            logger = PlatformLogger.getLogger("java.net.http.HttpClient");

        }

    }

    static boolean errors() {

        return (logging & ERRORS) != 0;

    }

    static boolean requests() {

        return (logging & REQUESTS) != 0;

    }

    static boolean headers() {

        return (logging & HEADERS) != 0;

    }

    static boolean ssl() {

        return (logging & SSL) != 0;

    }

    static boolean frames() {

        return (logging & FRAMES) != 0;

    }

    static void logError(String s) {

        if (errors())

            logger.info("ERROR: " + s);

    }

    static void logError(Throwable t) {

        if (errors()) {

            String s = Utils.stackTrace(t);

            logger.info("ERROR: " + s);

        }

    }

    static void logSSL(String s) {

        if (ssl())

            logger.info("SSL: " + s);

    }

    static void logRequest(String s) {

        if (requests())

            logger.info("REQUEST: " + s);

    }

    static void logResponse(String s) {

        if (requests())

            logger.info("RESPONSE: " + s);

    }

    static void logHeaders(String s) {

        if (headers())

            logger.info("HEADERS: " + s);

    }

// END HTTP2

}