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 /*

 * @test

 * @bug 8179071

 * @summary Test that language aliases of CLDR supplemental metadata are handled correctly.

 * @modules jdk.localedata

 * @run main/othervm -Djava.locale.providers=CLDR Bug8179071

 */

/**

 * This fix is dependent on a particular version of CLDR data.

 */

import java.time.Month;

import java.time.format.TextStyle;

import java.util.Arrays;

import java.util.HashSet;

import java.util.Locale;

import java.util.Map;

import java.util.Set;

public class Bug8179071 {

    // Deprecated and Legacy tags.

    private static final Set<String> LegacyAliases = Set.of("pa-PK", "ug-Arab-CN", "kk-Cyrl-KZ",

            "bs-BA", "ks-Arab-IN", "mn-Cyrl-MN", "ha-Latn-NE",

            "shi-MA", "ha-Latn-NG", "ms-Latn-BN","ms-Latn-SG",

            "ky-Cyrl-KG", "az-AZ", "zh-guoyu", "zh-min-nan", "i-klingon", "i-tsu",

            "sr-XK", "sgn-CH-DE", "mo", "i-tay", "scc", "uz-UZ", "uz-AF", "sr-RS",

            "i-hak", "sgn-BE-FR", "i-lux", "vai-LR", "tl", "zh-hakka", "i-ami", "aa-SAAHO", "ha-Latn-GH",

            "zh-xiang", "i-pwn", "sgn-BE-NL", "jw", "sh", "tzm-Latn-MA", "i-bnn");

    // expected month format data for  locales after language aliases replacement.

    private static Map<String, String> shortJanuaryNames = Map.of( "pa-PK", "\u062c\u0646\u0648\u0631\u06cc",

                                                          "uz-AF" , "\u062c\u0646\u0648",

                                                          "sr-ME", "jan",

                                                          "scc", "\u0458\u0430\u043d",

                                                          "sh", "jan",

                                                          "ha-Latn-NE", "Jan",

                                                          "i-lux", "Jan.");

    private static void test(String tag, String expected) {

        Locale target = Locale.forLanguageTag(tag);

        Month day = Month.JANUARY;

        TextStyle style = TextStyle.SHORT;

        String actual = day.getDisplayName(style, target);

        if (!actual.equals(expected)) {

            throw new RuntimeException("failed for locale  " + tag + " actual output " + actual +"  does not match with  " + expected);

        }

    }

    /**

     * getAvailableLocales() should not contain any deprecated or Legacy language tags

     */

    private static void checkInvalidTags() {

        Set<String> invalidTags = new HashSet<>();

        Arrays.asList(Locale.getAvailableLocales()).stream()

                .map(loc -> loc.toLanguageTag())

                .forEach( tag -> {if(LegacyAliases.contains(tag)) {invalidTags.add(tag);}});

        if (!invalidTags.isEmpty()) {

          throw new RuntimeException("failed: Deprecated and Legacy tags found  " + invalidTags  + " in AvailableLocales ");

        }

    }

    public static void main(String[] args) {

        shortJanuaryNames.forEach((key, value) -> test(key, value));

        checkInvalidTags();

    }

}