#!/usr/bin/env node
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 *
 */

/**
 * This is a fairly literal JavaScript port of message.py used to unit test the
 * proton.Message wrapper class.
 */

// Check if the environment is Node.js and if not log an error and exit.
if (typeof process === 'object' && typeof require === 'function') {
    var unittest = require("./unittest.js");
    var assert = require("assert");
    var proton = require("qpid-proton-messenger");

    /**
     * JavaScript Implementation of Python's range() function taken from:
     * http://stackoverflow.com/questions/8273047/javascript-function-similar-to-python-range
     */
    var range = function(start, stop, step) {
        if (typeof stop == 'undefined') {
            // one param defined
            stop = start;
            start = 0;
        };
        if (typeof step == 'undefined') {
            step = 1;
        };
        if ((step > 0 && start >= stop) || (step < 0 && start <= stop)) {
            return [];
        };
        var result = [];
        for (var i = start; step > 0 ? i < stop : i > stop; i += step) {
            result.push(i);
        };
        return result;
    };


    // Extend TestCase by creating a new Test class as we're using it in a few places.
    var Test = function() { // Test constructor.
        /**
         * The following call is the equivalent of "super" in Java. It's not necessary
         * here as the unittest.TestCase constructor doesn't set any state, but it
         * is the correct thing to do when implementing classical inheritance in
         * JavaScript so I've kept it here as a useful reminder of the "pattern".
         */
        //unittest.TestCase.prototype.constructor.call(this);
    };  

    Test.prototype = new unittest.TestCase(); // Here's where the inheritance occurs.
    Test.prototype.constructor = Test; // Otherwise instances of Test would have a constructor of unittest.TestCase.

    Test.prototype.setUp = function() {
        this.msg = new proton.Message();
    };

    Test.prototype.tearDown = function() {
        this.msg.free();
        this.msg = null;
    };


    // Extend Test more simply by creating a prototype instance and adding test methods as properties.

    var AccessorsTest = new Test();

    AccessorsTest._test = function(name, defaultValue, values) {
        /**
         * For the case of Binary values under test we retrieve their toString().
         * This is because the methods under test "consume" the data, in other
         * words ownership of the underlying raw data transfers to the Message
         * object so the sent Binary object becomes "empty" after calling the setter.
         * In addition Binary values merely contain a "pointer" to the raw data
         * so even a "deepEqual" comparison won't accurately compare two Binaries.
         * For these tests we "cheat" and store an array of characters in the
         * Binary so that we can use their String forms for comparison tests.
         *
         * We also get the String value of Uuid for the case of setUserID because
         * that method transparently creates Binary values from the String form
         * of non-Binary data passed to it. It's a convenience method, but makes
         * testing somewhat more fiddly.
         */

        // First get the values passed to the method.
        var values = Array.prototype.slice.apply(arguments, [2]);
        // If the first element of values is actually an Array then use the Array.
        // This scenario is what happens in the tests that use the range() function.
        values = (Object.prototype.toString.call(values[0]) === '[object Array]') ? values[0] : values;
    
        // Work out the accessor/mutator names noting that boolean accessors use "is" not "get".
        var setter = 'set' + name;
        var getter = (typeof defaultValue === 'boolean') ? 'is' + name : 'get' + name;
    
        // Get the message's default value first.
        var d = this.msg[getter]();
        d = (d instanceof proton.Data.Binary) ? d.toString() : d;
    
        // Compare the message's default with the expected default value passed in the test case.
        assert.deepEqual(d, defaultValue);
    
        for (var i = 0; i < values.length; i++) {
            var v = values[i];
    
            var value = (v instanceof proton.Data.Binary ||
                         (name === 'UserID' && v instanceof proton.Data.Uuid)) ? v.toString() : v;
            value = (v instanceof Date) ? v.valueOf() : v;
    
            this.msg[setter](v); // This call will "consume" Binary data.
    
            var gotten = this.msg[getter]();
            gotten = (gotten instanceof proton.Data.Binary) ? gotten.toString() : gotten;
            gotten = (gotten instanceof Date) ? gotten.valueOf() : v;
    
            assert.deepEqual(value, gotten);
        }
    };

    AccessorsTest._testString = function(name) {
        this._test(name, "", "asdf", "fdsa", "");
    };  

    AccessorsTest._testTime = function(name) {
        // The ExpiryTime and CreationTime methods can take either a number or a Date Object.
        this._test(name, new Date(0), new Date(0), 123456789, new Date(987654321));
    };

    AccessorsTest.testID = function() {
        console.log("testID");
        this._test("ID", null, "bytes", null, 123, "string", new proton.Data.Uuid(), new proton.Data.Binary("ВИНАРЫ"));
        console.log("OK\n");
    };  

    AccessorsTest.testCorrelationID = function() {
        console.log("testCorrelationID");
        this._test("CorrelationID", null, "bytes", null, 123, "string", new proton.Data.Uuid(), new proton.Data.Binary("ВИНАРЫ"));
        console.log("OK\n");
    };

    AccessorsTest.testDurable = function() {
        console.log("testDurable");
        this._test("Durable", false, true, false);
        console.log("OK\n");
    };

    AccessorsTest.testPriority = function() {
        console.log("testPriority");
        this._test("Priority", proton.Message.DEFAULT_PRIORITY, range(0, 256));
        console.log("OK\n");
    };

    AccessorsTest.testTTL = function() {
        console.log("testTTL");
        this._test("TTL", 0, range(12345, 54321));
        console.log("OK\n");
    };

    AccessorsTest.testFirstAcquirer = function() {
        console.log("testFirstAcquirer");
        this._test("FirstAcquirer", false, true, false);
        console.log("OK\n");
    };

    AccessorsTest.testDeliveryCount = function() {
        console.log("testDeliveryCount");
        this._test("DeliveryCount", 0, range(0, 1024));
        console.log("OK\n");
    };

    AccessorsTest.testUserID = function() {
        console.log("testUserID");
        this._test("UserID", "", "asdf", "fdsa", 123, new proton.Data.Binary("ВИНАРЫ"), new proton.Data.Uuid(), "");
        console.log("OK\n");
    };

    AccessorsTest.testAddress = function() {
        console.log("testAddress");
        this._testString("Address");
        console.log("OK\n");
    };

    AccessorsTest.testSubject = function() {
        console.log("testSubject");
        this._testString("Subject");
        console.log("OK\n");
    };

    AccessorsTest.testReplyTo = function() {
        console.log("testReplyTo");
        this._testString("ReplyTo");
        console.log("OK\n");
    };

    AccessorsTest.testContentType = function() {
        console.log("testContentType");
        this._testString("ContentType");
        console.log("OK\n");
    };

    AccessorsTest.testContentEncoding = function() {
        console.log("testContentEncoding");
        this._testString("ContentEncoding");
        console.log("OK\n");
    };

    AccessorsTest.testExpiryTime = function() {
        console.log("testExpiryTime");
        this._testTime("ExpiryTime");
        console.log("OK\n");
    };

    AccessorsTest.testCreationTime = function() {
        console.log("testCreationTime");
        this._testTime("CreationTime");
        console.log("OK\n");
    };

    AccessorsTest.testGroupID = function() {
        console.log("testGroupID");
        this._testString("GroupID");
        console.log("OK\n");
    };

    AccessorsTest.testGroupSequence = function() {
        console.log("testGroupSequence");
        this._test("GroupSequence", 0, 0, -10, 10, 20, -20);
        console.log("OK\n");
    };

    AccessorsTest.testReplyToGroupID = function() {
        console.log("testReplyToGroupID");
        this._testString("ReplyToGroupID");
        console.log("OK\n");
    };


    var CodecTest = new Test();

    CodecTest.testRoundTrip = function() {
        console.log("testRoundTrip");
        this.msg.setID("asdf");
        this.msg.setCorrelationID(new proton.Data.Uuid());
        this.msg.setTTL(3);
        this.msg.setPriority(100);
        this.msg.setAddress("address");
        this.msg.setSubject("subject");
        this.msg.body = "Hello World!";
    
        var data = this.msg.encode();
        var msg2 = new proton.Message();
        msg2.decode(data);
    
        assert(this.msg.getID() === msg2.getID());
        assert(this.msg.getCorrelationID().toString() === msg2.getCorrelationID().toString());
        assert(this.msg.getTTL() === msg2.getTTL());
        assert(this.msg.getPriority() === msg2.getPriority());
        assert(this.msg.getAddress() === msg2.getAddress());
        assert(this.msg.getSubject() === msg2.getSubject());
        assert(this.msg.body === msg2.body);

        msg2.free();
        console.log("OK\n");
    };

    /**
     * This test tests the transparent serialisation and deserialisation of JavaScript
     * Objects using the AMQP type system (this is the default behaviour).
     */
    CodecTest.testRoundTripBodyObject = function() {
        console.log("testRoundTripBodyObject");
        this.msg.setAddress("address");
        this.msg.body = {array: [1, 2, 3, 4], object: {name: "John Smith", age: 65}};

        var data = this.msg.encode();
        var msg2 = new proton.Message();
        msg2.decode(data);
    
        assert(this.msg.getAddress() === msg2.getAddress());
        assert(this.msg.getContentType() === msg2.getContentType());
        assert.deepEqual(this.msg.body, msg2.body);

        msg2.free();
        console.log("OK\n");
    };

    /**
     * This test tests the transparent serialisation and deserialisation of JavaScript
     * Objects as JSON. In this case the "on-the-wire" representation is an AMQP binary
     * stored in the AMQP data section.
     */
    CodecTest.testRoundTripBodyObjectAsJSON = function() {
        console.log("testRoundTripBodyObjectAsJSON");
        this.msg.setAddress("address");
        this.msg.setContentType("application/json");
        this.msg.body = {array: [1, 2, 3, 4], object: {name: "John Smith", age: 65}};
    
        var data = this.msg.encode();
        var msg2 = new proton.Message();
        msg2.decode(data);
    
        assert(this.msg.getAddress() === msg2.getAddress());
        assert(this.msg.getContentType() === msg2.getContentType());
        assert.deepEqual(this.msg.body, msg2.body);
    
        msg2.free();
        console.log("OK\n");
    };

    /**
     * By default the API will encode using the AMQP type system, but is the content-type
     * is set it will encode as an opaque Binary in an AMQP data section. For certain
     * types however this isn't the most useful thing. For application/json (see
     * previous test) we convert to and from JavaScript Objects and for text/* MIME
     * types the API will automatically convert the received Binary into a String.
     */
    CodecTest.testRoundTripMIMETextObject = function() {
        console.log("testRoundTripMIMETextObject");
        this.msg.setAddress("address");
        this.msg.setContentType("text/plain");
        this.msg.body = "some text";
    
        var data = this.msg.encode();
        var msg2 = new proton.Message();
        msg2.decode(data);

        assert(this.msg.getAddress() === msg2.getAddress());
        assert(this.msg.getContentType() === msg2.getContentType());
        assert.deepEqual(this.msg.body, msg2.body);

        msg2.free();
        console.log("OK\n");
    };


    // load and save are deprecated so not implemented in the JavaScript binding.

    AccessorsTest.run();
    CodecTest.run();
} else {
    console.error("message.js should be run in Node.js");
}