/*

 * 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 com.foo.FooNumberFormat;

public class NumberFormatProviderTest extends ProviderTest {

    List<Locale> availloc = Arrays.asList(NumberFormat.getAvailableLocales());

    List<Locale> providerloc = Arrays.asList(nfp.getAvailableLocales());

    List<Locale> jreloc = Arrays.asList(LocaleProviderAdapter.forJRE().getAvailableLocales());

    List<Locale> jreimplloc = Arrays.asList(LocaleProviderAdapter.forJRE().getNumberFormatProvider().getAvailableLocales());

    public static void main(String[] s) {

        new NumberFormatProviderTest();

    }

    NumberFormatProviderTest() {

        availableLocalesTest();

        objectValidityTest();

        messageFormatTest();

    }

    void availableLocalesTest() {

        Set<Locale> localesFromAPI = new HashSet<>(availloc);

        Set<Locale> localesExpected = new HashSet<>(jreloc);

        localesExpected.addAll(providerloc);

        if (localesFromAPI.equals(localesExpected)) {

            System.out.println("availableLocalesTest passed.");

        } else {

            throw new RuntimeException("availableLocalesTest failed");

        }

    }

    void objectValidityTest() {

        for (Locale target: availloc) {

            boolean jreSupportsLocale = jreimplloc.contains(target);

            // JRE string arrays

            String[] jreNumberPatterns = null;

            if (jreSupportsLocale) {

                jreNumberPatterns = LocaleProviderAdapter.forJRE().getLocaleResources(target).getNumberPatterns();

            }

            // result object

            String resultCur = getPattern(NumberFormat.getCurrencyInstance(target));

            String resultInt = getPattern(NumberFormat.getIntegerInstance(target));

            String resultNum = getPattern(NumberFormat.getNumberInstance(target));

            String resultPer = getPattern(NumberFormat.getPercentInstance(target));

            // provider's object (if any)

            String providersCur = null;

            String providersInt = null;

            String providersNum = null;

            String providersPer = null;

            if (providerloc.contains(target)) {

                NumberFormat dfCur = nfp.getCurrencyInstance(target);

                if (dfCur != null) {

                    providersCur = getPattern(dfCur);

                }

                NumberFormat dfInt = nfp.getIntegerInstance(target);

                if (dfInt != null) {

                    providersInt = getPattern(dfInt);

                }

                NumberFormat dfNum = nfp.getNumberInstance(target);

                if (dfNum != null) {

                    providersNum = getPattern(dfNum);

                }

                NumberFormat dfPer = nfp.getPercentInstance(target);

                if (dfPer != null) {

                    providersPer = getPattern(dfPer);

                }

            }

            // JRE's object (if any)

            // note that this totally depends on the current implementation

            String jresCur = null;

            String jresInt = null;

            String jresNum = null;

            String jresPer = null;

            if (jreSupportsLocale) {

                DecimalFormat dfCur = new DecimalFormat(jreNumberPatterns[1],

                    DecimalFormatSymbols.getInstance(target));

                if (dfCur != null) {

                    adjustForCurrencyDefaultFractionDigits(dfCur);

                    jresCur = dfCur.toPattern();

                }

                DecimalFormat dfInt = new DecimalFormat(jreNumberPatterns[0],

                    DecimalFormatSymbols.getInstance(target));

                if (dfInt != null) {

                    dfInt.setMaximumFractionDigits(0);

                    dfInt.setDecimalSeparatorAlwaysShown(false);

                    dfInt.setParseIntegerOnly(true);

                    jresInt = dfInt.toPattern();

                }

                DecimalFormat dfNum = new DecimalFormat(jreNumberPatterns[0],

                    DecimalFormatSymbols.getInstance(target));

                if (dfNum != null) {

                    jresNum = dfNum.toPattern();

                }

                DecimalFormat dfPer = new DecimalFormat(jreNumberPatterns[2],

                    DecimalFormatSymbols.getInstance(target));

                if (dfPer != null) {

                    jresPer = dfPer.toPattern();

                }

            }

            checkValidity(target, jresCur, providersCur, resultCur, jreSupportsLocale);

            checkValidity(target, jresInt, providersInt, resultInt, jreSupportsLocale);

            checkValidity(target, jresNum, providersNum, resultNum, jreSupportsLocale);

            checkValidity(target, jresPer, providersPer, resultPer, jreSupportsLocale);

        }

    }

    /**

     * Adjusts the minimum and maximum fraction digits to values that

     * are reasonable for the currency's default fraction digits.

     */

    void adjustForCurrencyDefaultFractionDigits(DecimalFormat df) {

        DecimalFormatSymbols dfs = df.getDecimalFormatSymbols();

        Currency currency = dfs.getCurrency();

        if (currency == null) {

            try {

                currency = Currency.getInstance(dfs.getInternationalCurrencySymbol());

            } catch (IllegalArgumentException e) {

            }

        }

        if (currency != null) {

            int digits = currency.getDefaultFractionDigits();

            if (digits != -1) {

                int oldMinDigits = df.getMinimumFractionDigits();

                // Common patterns are "#.##", "#.00", "#".

                // Try to adjust all of them in a reasonable way.

                if (oldMinDigits == df.getMaximumFractionDigits()) {

                    df.setMinimumFractionDigits(digits);

                    df.setMaximumFractionDigits(digits);

                } else {

                    df.setMinimumFractionDigits(Math.min(digits, oldMinDigits));

                    df.setMaximumFractionDigits(digits);

                }

            }

        }

    }

    private static String getPattern(NumberFormat nf) {

        if (nf instanceof DecimalFormat) {

            return ((DecimalFormat)nf).toPattern();

        }

        if (nf instanceof FooNumberFormat) {

            return ((FooNumberFormat)nf).toPattern();

        }

        return null;

    }

    private static final String[] NUMBER_PATTERNS = {

        "num={0,number}",

        "num={0,number,currency}",

        "num={0,number,percent}",

        "num={0,number,integer}"

    };

    void messageFormatTest() {

        for (Locale target : providerloc) {

            for (String pattern : NUMBER_PATTERNS) {

                MessageFormat mf = new MessageFormat(pattern, target);

                String toPattern = mf.toPattern();

                if (!pattern.equals(toPattern)) {

                    throw new RuntimeException("MessageFormat.toPattern: got '"

                                               + toPattern

                                               + "', expected '" + pattern + "'");

                }

            }

        }

    }