package net.sourceforge.fenixedu.domain;

import java.text.Collator;
import java.util.Comparator;
import java.util.HashSet;
import java.util.Locale;
import java.util.ResourceBundle;
import java.util.Set;

import org.apache.commons.lang.StringUtils;

import pt.utl.ist.fenix.tools.util.i18n.Language;
import pt.utl.ist.fenix.tools.util.i18n.MultiLanguageString;

public class Country extends Country_Base {

    static final public String PORTUGAL = "PORTUGAL";

    static final public String NATIONALITY_PORTUGUESE = "PORTUGUESA";

    static final public String DEFAULT_COUNTRY_NATIONALITY = NATIONALITY_PORTUGUESE;

    public static Comparator<Country> COMPARATOR_BY_NAME = new Comparator<Country>() {
        @Override
        public int compare(Country leftCountry, Country rightCountry) {
            int comparationResult = Collator.getInstance().compare(leftCountry.getName(), rightCountry.getName());
            return (comparationResult == 0) ? leftCountry.getIdInternal().compareTo(rightCountry.getIdInternal()) : comparationResult;
        }
    };

    private static Set<Country> CPLP_COUNTRIES;

    private Country() {
        super();
        setRootDomainObject(RootDomainObject.getInstance());
        setDefaultCountry(false);
    }

    public Country(final MultiLanguageString localizedName, final MultiLanguageString countryNationality, final String code,
            final String threeLetterCode) {
        this();
        setCode(code);
        setCountryNationality(countryNationality);
        setName(localizedName.getPreferedContent());
        setLocalizedName(localizedName);
        setThreeLetterCode(threeLetterCode);
    }

    // -------------------------------------------------------------
    // read static methods
    // -------------------------------------------------------------

    /**
     * If the person country is undefined it is set to default. In a not
     * distance future this will not be needed since the coutry can never be
     * null.
     */
    public static Country readDefault() {
        for (final Country country : RootDomainObject.getInstance().getCountrysSet()) {
            if (country.isDefaultCountry()) {
                return country;
            }
        }

        return null;
    }

    public static Country readCountryByNationality(final String nationality) {
        for (final Country country : RootDomainObject.getInstance().getCountrysSet()) {
            if (country.getNationality().equals(nationality)) {
                return country;
            }
        }
        return null;
    }

    // FIXME: This method is wrong and should not exist
    // exists only because PORTUGAL is repeated
    // country object should be split in 2 objects: Country and District
    // where Country has many Districts
    public static Set<Country> readDistinctCountries() {
        final Set<Country> result = new HashSet<Country>();
        for (final Country country : RootDomainObject.getInstance().getCountrysSet()) {
            if (!country.getName().equalsIgnoreCase(PORTUGAL)) {
                result.add(country);
            } else {
                if (country.getNationality().equalsIgnoreCase(NATIONALITY_PORTUGUESE)) {
                    result.add(country);
                }
            }
        }

        return result;
    }

    /**
     * This method is (yet another) hack in Country due to strange values for
     * the Portuguese nationality.
     * 
     */
    @Deprecated
    public String getFilteredNationality(final Locale locale) {
        final String nationality = getCountryNationality().getContent(Language.valueOf(locale.getLanguage()));
        if (this != readDefault()) {
            return nationality;
        }

        final String specialCase =
                ResourceBundle.getBundle("resources/ApplicationResources", Language.getLocale())
                        .getString("label.person.portugueseNationality").toUpperCase();
        return nationality.trim().contains(specialCase) ? specialCase : nationality;
    }

    public boolean isDefaultCountry() {
        return getDefaultCountry();
    }

    static public Country readByTwoLetterCode(String code) {

        if (StringUtils.isEmpty(code)) {
            return null;
        }

        // TODO: Hack to remove, when we no longer have 4(!!) Portugal countries
        // with same code (pt)
        final Country defaultCountry = readDefault();
        if (defaultCountry.getCode().equalsIgnoreCase(code)) {
            return defaultCountry;
        }

        for (final Country country : RootDomainObject.getInstance().getCountrysSet()) {
            if (country.getCode().equalsIgnoreCase(code)) {
                return country;
            }
        }
        return null;
    }

    static public Country readByThreeLetterCode(String code) {

        if (StringUtils.isEmpty(code)) {
            return null;
        }

        // TODO: Hack to remove, when we no longer have 4(!!) Portugal countries
        // with same code (pt)
        Country defaultCountry = readDefault();
        if (defaultCountry.getThreeLetterCode().equalsIgnoreCase(code)) {
            return defaultCountry;
        }

        for (final Country country : RootDomainObject.getInstance().getCountrysSet()) {
            if (country.getThreeLetterCode() != null && country.getThreeLetterCode().equalsIgnoreCase(code)) {
                return country;
            }
        }
        return null;
    }

    @Deprecated
    public String getNationality() {
        return getCountryNationality().getPreferedContent();
    }

    @Deprecated
    public void setNationality(final String nationality) {
        getCountryNationality().setContent(Language.getDefaultLanguage(), nationality);
    }

    public synchronized static Set<Country> getCPLPCountries() {
        if (CPLP_COUNTRIES == null) {
            CPLP_COUNTRIES = new HashSet<Country>();
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("PT"));
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("BR"));
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("AO"));
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("CV"));
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("GW"));
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("MZ"));
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("ST"));
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("TL"));
            CPLP_COUNTRIES.add(Country.readByTwoLetterCode("MO"));
        }
        return CPLP_COUNTRIES;
    }

    public static boolean isCPLPCountry(Country country) {
        return getCPLPCountries().contains(country);
    }

    public void delete() {
        removeRootDomainObject();
        deleteDomainObject();
    }
}