/*

 * Copyright (c) 2012, 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.

 *

 * 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

 * questions.

 */

import java.util.*;

import static java.util.GregorianCalendar.*;

public class NarrowNamesTest {

    private static final Locale US = Locale.US;

    private static final Locale JAJPJP = new Locale("ja", "JP", "JP");

    private static final Locale THTH = new Locale("th", "TH");

    private static final String RESET_INDEX = "RESET_INDEX";

    private static int errors = 0;

    // This test is locale data-dependent.

    public static void main(String[] args) {

        test(US, ERA, "B",

             ERA, BC, YEAR, 1);

        test(US, ERA, "A",

             ERA, AD, YEAR, 2012);

        test(US, DAY_OF_WEEK, "S",

             YEAR, 2012, MONTH, DECEMBER, DAY_OF_MONTH, 23);

        test(US, AM_PM, "a",

             HOUR_OF_DAY, 10);

        test(US, AM_PM, "p",

             HOUR_OF_DAY, 23);

        test(JAJPJP, DAY_OF_WEEK, "\u65e5",

             YEAR, 24, MONTH, DECEMBER, DAY_OF_MONTH, 23);

        test(THTH, MONTH, NARROW_STANDALONE, "\u0e18.\u0e04.",

             YEAR, 2555, MONTH, DECEMBER, DAY_OF_MONTH, 5);

        test(THTH, DAY_OF_WEEK, "\u0e1e",

             YEAR, 2555, MONTH, DECEMBER, DAY_OF_MONTH, 5);

        testMap(US, DAY_OF_WEEK, ALL_STYLES, // shouldn't include any narrow names

                "", // 1-based indexing for DAY_OF_WEEK

                "Sunday",    // Sunday

                "Monday",    // Monday

                "Tuesday",   // Tuesday

                "Wednesday", // Wednesday

                "Thursday",  // Thursday

                "Friday",    // Friday

                "Saturday",  // Saturday

                RESET_INDEX,

                "", // 1-based indexing for DAY_OF_WEEK

                "Sun",       // abb Sunday

                "Mon",       // abb Monday

                "Tue",       // abb Tuesday

                "Wed",       // abb Wednesday

                "Thu",       // abb Thursday

                "Fri",       // abb Friday

                "Sat"        // abb Saturday

                );

        testMap(US, DAY_OF_WEEK, NARROW_FORMAT); // expect null

        testMap(US, AM_PM, ALL_STYLES,

                "AM", "PM",

                RESET_INDEX,

                "a", "p");

        testMap(JAJPJP, DAY_OF_WEEK, NARROW_STANDALONE); // expect null

        testMap(JAJPJP, DAY_OF_WEEK, NARROW_FORMAT,

                "", // 1-based indexing for DAY_OF_WEEK

                "\u65e5",

                "\u6708",

                "\u706b",

                "\u6c34",

                "\u6728",

                "\u91d1",

                "\u571f");

        testMap(THTH, MONTH, NARROW_FORMAT); // expect null

        testMap(THTH, MONTH, NARROW_STANDALONE,

                "\u0e21.\u0e04.",

                "\u0e01.\u0e1e.",

                "\u0e21\u0e35.\u0e04.",

                "\u0e40\u0e21.\u0e22.",

                "\u0e1e.\u0e04.",

                "\u0e21\u0e34.\u0e22.",

                "\u0e01.\u0e04.",

                "\u0e2a.\u0e04.",

                "\u0e01.\u0e22.",

                "\u0e15.\u0e04.",

                "\u0e1e.\u0e22.",

                "\u0e18.\u0e04.");

        if (errors != 0) {

            throw new RuntimeException("test failed");

        }

    }

    private static void test(Locale locale, int field, String expected, int... data) {

        test(locale, field, NARROW_FORMAT, expected, data);

    }

    private static void test(Locale locale, int field, int style, String expected, int... fieldValuePairs) {

        Calendar cal = Calendar.getInstance(locale);

        cal.clear();

        for (int i = 0; i < fieldValuePairs.length;) {

            int f = fieldValuePairs[i++];

            int v = fieldValuePairs[i++];

            cal.set(f, v);

        }

        String got = cal.getDisplayName(field, style, locale);

        if (!expected.equals(got)) {

            System.err.printf("test: locale=%s, field=%d, value=%d, style=%d, got=\"%s\", expected=\"%s\"%n",

                              locale, field, cal.get(field), style, got, expected);

            errors++;

        }

    }

    private static void testMap(Locale locale, int field, int style, String... expected) {

        Map<String, Integer> expectedMap = null;

        if (expected.length > 0) {

            expectedMap = new TreeMap<>(LengthBasedComparator.INSTANCE);

            int index = 0;

            for (int i = 0; i < expected.length; i++) {

                if (expected[i].isEmpty()) {

                    index++;

                    continue;

                }

                if (expected[i] == RESET_INDEX) {

                    index = 0;

                    continue;

                }

                expectedMap.put(expected[i], index++);

            }

        }

        Calendar cal = Calendar.getInstance(locale);

        Map<String, Integer> got = cal.getDisplayNames(field, style, locale);

        if (!(expectedMap == null && got == null)

            && !expectedMap.equals(got)) {

            System.err.printf("testMap: locale=%s, field=%d, style=%d, expected=%s, got=%s%n",

                              locale, field, style, expectedMap, got);

            errors++;

        }

    }

    /**

     * Comparator implementation for TreeMap which iterates keys from longest

     * to shortest.

     */

    private static class LengthBasedComparator implements Comparator<String> {

        private static final LengthBasedComparator INSTANCE = new LengthBasedComparator();

        private LengthBasedComparator() {

        }

        @Override

        public int compare(String o1, String o2) {

            int n = o2.length() - o1.length();

            return (n == 0) ? o1.compareTo(o2) : n;

        }

    }

}