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 /*
 * @test
 * @bug 8204603
 * @summary Test that correct data is retrieved for zh_CN and zh_TW locales
 * and CLDR provider supports all locales for which aliases exist.
 * @modules java.base/sun.util.locale.provider
 *          jdk.localedata
 * @run main Bug8204603
 */

import java.text.DateFormatSymbols;
import java.text.DecimalFormatSymbols;
import java.util.Calendar;
import java.util.HashSet;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import sun.util.locale.provider.LocaleProviderAdapter;

/**
 * This test is dependent on a particular version of CLDR data.
 */
public class Bug8204603 {
    
    /**
     * List of all locales for which CLDR provides alias Mappings. e.g alias of
     * zh-HK is zh-Hant-HK
     */
    private static final List<Locale> ALIAS_LOCALES
            = List.of(Locale.forLanguageTag("az-AZ"), Locale.forLanguageTag("bs-BA"),
                    Locale.forLanguageTag("ha-Latn-GH"), Locale.forLanguageTag("ha-Latn-NE"),
                    Locale.forLanguageTag("ha-Latn-NG"), Locale.forLanguageTag("i-lux"),
                    Locale.forLanguageTag("kk-Cyrl-KZ"), Locale.forLanguageTag("ks-Arab-IN"),
                    Locale.forLanguageTag("ky-Cyrl-KG"), Locale.forLanguageTag("lb"),
                    Locale.forLanguageTag("lb"), Locale.forLanguageTag("mn-Cyrl-MN"),
                    Locale.forLanguageTag("mo"), Locale.forLanguageTag("ms-Latn-BN"),
                    Locale.forLanguageTag("ms-Latn-MY"), Locale.forLanguageTag("ms-Latn-SG"),
                    Locale.forLanguageTag("pa-IN"), Locale.forLanguageTag("pa-PK"),
                    Locale.forLanguageTag("scc"), Locale.forLanguageTag("scr"),
                    Locale.forLanguageTag("sh"), Locale.forLanguageTag("shi-MA"),
                    Locale.forLanguageTag("sr-BA"), Locale.forLanguageTag("sr-RS"),
                    Locale.forLanguageTag("sr-XK"), Locale.forLanguageTag("tl"),
                    Locale.forLanguageTag("tzm-Latn-MA"), Locale.forLanguageTag("ug-Arab-CN"),
                    Locale.forLanguageTag("uz-AF"), Locale.forLanguageTag("uz-UZ"),
                    Locale.forLanguageTag("vai-LR"), Locale.forLanguageTag("vai-LR"),
                    Locale.forLanguageTag("yue-CN"), Locale.forLanguageTag("yue-HK"),
                    Locale.forLanguageTag("zh-CN"), Locale.forLanguageTag("zh-HK"),
                    Locale.forLanguageTag("zh-MO"), Locale.forLanguageTag("zh-SG"),
                    Locale.forLanguageTag("zh-TW"));

    private static final Map<Locale, String> CALENDAR_DATA_MAP = Map.of(
            Locale.forLanguageTag("zh-CN"), "\u5468\u65E5",
            Locale.forLanguageTag("zh-TW"), "\u9031\u65E5");
    private static final Map<Locale, String> NAN_DATA_MAP = Map.of(
            Locale.forLanguageTag("zh-CN"), "NaN",
            Locale.forLanguageTag("zh-TW"), "\u975E\u6578\u503C");

    public static void main(String[] args) {
        testCldrSupportedLocales();
        CALENDAR_DATA_MAP.forEach((k, v) -> testCalendarData(k, v));
        NAN_DATA_MAP.forEach((k, v) -> testNanData(k, v));
    }

    /**
     * tests that CLDR provider should return true for alias locales.
     *
     */
    private static void testCldrSupportedLocales() {
        LocaleProviderAdapter cldr = LocaleProviderAdapter.forType(LocaleProviderAdapter.Type.CLDR);
        Set<Locale> availableLocs = Set.of(cldr.getAvailableLocales());
        Set<String> langtags = new HashSet<>();
        availableLocs.forEach(loc -> langtags.add(loc.toLanguageTag()));
        ALIAS_LOCALES.stream().filter(loc -> !cldr.isSupportedProviderLocale(loc, langtags)).findAny()
                .ifPresent(l -> {
                    throw new RuntimeException("Locale " + l
                            + "  is not supported by CLDR locale provider");
                });
    }

    private static void testCalendarData(Locale loc, String expected) {
        DateFormatSymbols dfs = DateFormatSymbols.getInstance(loc);
        String[] shortDays = dfs.getShortWeekdays();
        String actual = shortDays[Calendar.SUNDAY];
        if (!actual.equals(expected)) {
            throw new RuntimeException("Calendar data mismatch for locale: "
                    + loc + ", expected  is: " + expected + ", actual is: " + actual);
        }
    }

    private static void testNanData(Locale loc, String expected) {
        DecimalFormatSymbols dfs = DecimalFormatSymbols.getInstance(loc);
        String actual = dfs.getNaN();
        if (!actual.equals(expected)) {
            throw new RuntimeException("NaN mismatch for locale: "
                    + loc + ", expected  is: " + expected + ", actual is: " + actual);
        }
    }
}