/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2013 Oracle and/or its affiliates. All rights reserved.
 *
 * Oracle and Java are registered trademarks of Oracle and/or its affiliates.
 * Other names may be trademarks of their respective owners.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common
 * Development and Distribution License("CDDL") (collectively, the
 * "License"). You may not use this file except in compliance with the
 * License. You can obtain a copy of the License at
 * http://www.netbeans.org/cddl-gplv2.html
 * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
 * specific language governing permissions and limitations under the
 * License.  When distributing the software, include this License Header
 * Notice in each file and include the License file at
 * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the GPL Version 2 section of the License file that
 * accompanied this code. If applicable, add the following below the
 * License Header, with the fields enclosed by brackets [] replaced by
 * your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
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 * If you wish your version of this file to be governed by only the CDDL
 * or only the GPL Version 2, indicate your decision by adding
 * "[Contributor] elects to include this software in this distribution
 * under the [CDDL or GPL Version 2] license." If you do not indicate a
 * single choice of license, a recipient has the option to distribute
 * your version of this file under either the CDDL, the GPL Version 2 or
 * to extend the choice of license to its licensees as provided above.
 * However, if you add GPL Version 2 code and therefore, elected the GPL
 * Version 2 license, then the option applies only if the new code is
 * made subject to such option by the copyright holder.
 *
 * Contributor(s):
 *
 * Portions Copyrighted 2013 Sun Microsystems, Inc.
 */

var FILE_SEPARATOR = process.env.FILE_SEPARATOR;
var PROJECT_CONFIG = process.env.PROJECT_CONFIG;
var BASE_DIR = process.env.BASE_DIR;
var AUTOWATCH = Boolean(process.env.AUTOWATCH);
var KARMA_NETBEANS_REPORTER = process.env.KARMA_NETBEANS_REPORTER;
var COVERAGE = Boolean(process.env.COVERAGE);
var COVERAGE_DIR = process.env.COVERAGE_DIR;
var DEBUG = Boolean(process.env.DEBUG);

var BROWSERS_MESSAGE = '$NB$netbeans browsers %s';
var ABSOLUTE_URLS_MESSAGE = '$NB$netbeans absoluteUrls';

var util = require('util');
var projectConf = require(PROJECT_CONFIG);

var printMessage = function() {
    var args = Array.prototype.slice.call(arguments);
    process.stdout.write(util.format.apply(null, args) + '\n');
};
var arrayUnique = function(input) {
    return input.filter(function (e, i, arr) {
        return arr.lastIndexOf(e) === i;
    });
};
var arrayRemove = function(input, value) {
    var index = input.indexOf(value);
    if (index > -1) {
        input.splice(index, 1);
    }
};

module.exports = function(config) {
    projectConf(config);

    if (DEBUG) {
        printMessage('NetBeans: Coverage is automatically disabled in Karma Debug mode.');
    }

    // base path
    if (config.basePath) {
        if (config.basePath.substr(0, 1) === '/' // unix
                || config.basePath.substr(1, 2) === ':\\') { // windows
            printMessage(ABSOLUTE_URLS_MESSAGE);
        } else {
            config.basePath = BASE_DIR + FILE_SEPARATOR + config.basePath;
        }
    } else {
        config.basePath = BASE_DIR + FILE_SEPARATOR;
        printMessage(ABSOLUTE_URLS_MESSAGE);
    }

    config.reporters = config.reporters || [];
    config.reporters.push('netbeans');
    if (COVERAGE) {
        config.reporters.push('coverage');
    } else if (DEBUG) {
        arrayRemove(config.reporters, 'coverage');
    }
    config.reporters = arrayUnique(config.reporters);

    config.plugins = config.plugins || [];
    config.plugins.push(KARMA_NETBEANS_REPORTER);
    if (COVERAGE) {
        config.plugins.push('karma-coverage');
    }
    config.plugins = arrayUnique(config.plugins);

    printMessage(BROWSERS_MESSAGE, config.browsers.join(','));

    config.colors = true;

    config.autoWatch = AUTOWATCH;

    config.singleRun = false;

    if (COVERAGE) {
        var nbCoverageReporter = {
            type: 'clover',
            dir: COVERAGE_DIR + FILE_SEPARATOR,
            file: 'clover.xml'
        };
        if (config.coverageReporter) {
            if (config.coverageReporter.reporters) {
                config.coverageReporter.reporters.push(nbCoverageReporter);
            } else {
                config.coverageReporter = {
                    reporters: [
                        nbCoverageReporter,
                        config.coverageReporter
                    ]
                };
            }
        } else {
            config.coverageReporter = nbCoverageReporter;
        }
    } else if (DEBUG
            && config.preprocessors) {
        for (var property in config.preprocessors) {
            var prep = config.preprocessors[property];
            if (typeof prep === 'object'
                    && prep.constructor === Array) {
                arrayRemove(prep, 'coverage');
            }
        }
    }
};
