/*

 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 *

 *   - Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 *

 *   - Neither the name of Oracle nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

/**

 * Simple Web Console-like support for Nashorn. In addition to

 * Web console object methods, this console add methods of

 * java.io.Console as well. Note:not all web console methods are 

 * implemented but useful subset is implemented.

 *

 * See also: https://developer.mozilla.org/en/docs/Web/API/console

 */

if (typeof console == 'undefined') {

(function() {

    var LocalDateTime = Java.type("java.time.LocalDateTime");

    var System = Java.type("java.lang.System");

    var jconsole = System.console();

    // add a new global variable called "console"

    this.console = {

    };

    function addConsoleMethods() {

        // expose methods of java.io.Console as an extension

        var placeholder = "-*-";

        // put a placeholder for each name from java.lang.Object

        var objMethods = Object.bindProperties({}, new java.lang.Object());

        for (var m in objMethods) {

            console[m] = placeholder;

        }

        // bind only the methods of java.io.Console

        // This bind will skip java.lang.Object methods as console

        // has properties of same name.

        Object.bindProperties(console, jconsole);

        // Now, delete java.lang.Object methods

        for (var m in console) {

            if (console[m] == placeholder) {

                delete console[m];

            }

        }

    }

    addConsoleMethods();

    function consoleLog(type, msg) {

        // print type of message, then time.

        jconsole.format("%s [%s] ", type, LocalDateTime.now().toString());

        if (typeof msg == 'string') {

            jconsole.format(msg + "\n", Array.prototype.slice.call(arguments, 2));

        } else {

            // simple space separated values and newline at the end

            var arr = Array.prototype.slice.call(arguments, 1);

            jconsole.format("%s\n", arr.join(" "));

        }

    }

    console.toString = function() "[object Console]";

    // web console functions

    console.assert = function(expr) {

        if (! expr) {

            arguments[0] = "Assertion Failed:"; 

            consoleLog.apply(console, arguments);

            // now, stack trace at the end

            jconsole.format("%s\n", new Error().stack);

        }

    };

    // dummy clear to avoid error!

    console.clear = function() {};

    var counter = {

        get: function(label) {

            if (! this[label]) {

                return this[label] = 1;

            } else {

                return ++this[label];

            }

        }

    };

    // counter 

    console.count = function(label) {

        label = label? String(label) : "<no label>";

        jconsole.format("%s: %d\n",label, counter.get(label).intValue());

    }

    // logging

    console.error = consoleLog.bind(jconsole, "ERROR");

    console.info = consoleLog.bind(jconsole, "INFO");

    console.log = console.info;

    console.debug = console.log;

    console.warn = consoleLog.bind(jconsole, "WARNING");

    // print stack trace

    console.trace = function() {

        jconsole.format("%s\n", new Error().stack);

    };

})();

}