/*   Copyright 2004 The Apache Software Foundation
 *
 *   Licensed under the Apache License, Version 2.0 (the "License");
 *   you may not use this file except in compliance with the License.
 *   You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *   Unless required by applicable law or agreed to in writing, software
 *   distributed under the License is distributed on an "AS IS" BASIS,
 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *   See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.xmlbeans.impl.values;

import org.apache.xmlbeans.*;
import org.apache.xmlbeans.impl.common.QNameHelper;
import org.apache.xmlbeans.impl.common.ValidationContext;

import java.util.Calendar;
import java.util.Date;

public abstract class JavaGDateHolderEx extends XmlObjectBase {
    public JavaGDateHolderEx(SchemaType type, boolean complex) {
        _schemaType = type;
        initComplexType(complex, false);
    }

    public SchemaType schemaType() {
        return _schemaType;
    }

    private final SchemaType _schemaType;
    private GDate _value;

    // SIMPLE VALUE ACCESSORS BELOW -------------------------------------------

    // sets/gets raw text value
    protected String compute_text(NamespaceManager nsm) {
        return _value == null ? "" : _value.toString();
    }

    protected void set_text(String s) {
        GDate newVal;
        if (_validateOnSet()) {
            newVal = validateLexical(s, _schemaType, _voorVc);
        } else {
            newVal = lex(s, _schemaType, _voorVc);
        }

        if (_validateOnSet() && newVal != null) {
            validateValue(newVal, _schemaType, _voorVc);
        }

        _value = newVal;
    }

    public static GDate lex(String v, SchemaType sType, ValidationContext context) {
        GDate date = null;

        try {
            date = new GDate(v);
        } catch (Exception e) {
            context.invalid(XmlErrorCodes.DATE, new Object[]{v});
        }

        if (date != null) {
            if (date.getBuiltinTypeCode() != sType.getPrimitiveType().getBuiltinTypeCode()) {
                context.invalid(XmlErrorCodes.DATE, new Object[]{"wrong type: " + v});
                date = null;
            } else if (!date.isValid()) {
                context.invalid(XmlErrorCodes.DATE, new Object[]{v});
                date = null;
            }
        }

        return date;
    }

    public static GDate validateLexical(String v, SchemaType sType, ValidationContext context) {

        GDate date = lex(v, sType, context);

        if (date != null && sType.hasPatternFacet()) {
            if (!sType.matchPatternFacet(v)) {
                context.invalid(XmlErrorCodes.DATATYPE_VALID$PATTERN_VALID,
                    new Object[]{"date", v, QNameHelper.readable(sType)});
            }
        }

        return date;
    }

    public static void validateValue(GDateSpecification v, SchemaType sType, ValidationContext context) {
        XmlObject x;
        GDate g;

        if (v.getBuiltinTypeCode() != sType.getPrimitiveType().getBuiltinTypeCode()) {
            context.invalid(XmlErrorCodes.DATE, new Object[]{"Date (" + v + ") does not have the set of fields required for " + QNameHelper.readable(sType)});
        }

        if ((x = sType.getFacet(SchemaType.FACET_MIN_EXCLUSIVE)) != null) {
            if (v.compareToGDate(g = ((XmlObjectBase) x).getGDateValue()) <= 0) {
                context.invalid(XmlErrorCodes.DATATYPE_MIN_EXCLUSIVE_VALID,
                    new Object[]{"date", v, g, QNameHelper.readable(sType)});
            }
        }

        if ((x = sType.getFacet(SchemaType.FACET_MIN_INCLUSIVE)) != null) {
            if (v.compareToGDate(g = ((XmlObjectBase) x).getGDateValue()) < 0) {
                context.invalid(XmlErrorCodes.DATATYPE_MIN_INCLUSIVE_VALID,
                    new Object[]{"date", v, g, QNameHelper.readable(sType)});
            }
        }

        if ((x = sType.getFacet(SchemaType.FACET_MAX_EXCLUSIVE)) != null) {
            if (v.compareToGDate(g = ((XmlObjectBase) x).getGDateValue()) >= 0) {
                context.invalid(XmlErrorCodes.DATATYPE_MAX_EXCLUSIVE_VALID,
                    new Object[]{"date", v, g, QNameHelper.readable(sType)});
            }
        }

        if ((x = sType.getFacet(SchemaType.FACET_MAX_INCLUSIVE)) != null) {
            if (v.compareToGDate(g = ((XmlObjectBase) x).getGDateValue()) > 0) {
                context.invalid(XmlErrorCodes.DATATYPE_MAX_INCLUSIVE_VALID,
                    new Object[]{"date", v, g, QNameHelper.readable(sType)});
            }
        }

        XmlObject[] vals = sType.getEnumerationValues();
        if (vals != null) {
            for (XmlObject val : vals) {
                if (v.compareToGDate(((XmlObjectBase) val).getGDateValue()) == 0) {
                    return;
                }
            }
            context.invalid(XmlErrorCodes.DATATYPE_ENUM_VALID,
                new Object[]{"date", v, QNameHelper.readable(sType)});
        }
    }

    protected void set_nil() {
        _value = null;
    }

    // numerics: gYear, gMonth, gDay accept an integer
    public int getIntValue() {
        int code = schemaType().getPrimitiveType().getBuiltinTypeCode();

        if (code != SchemaType.BTC_G_DAY &&
            code != SchemaType.BTC_G_MONTH &&
            code != SchemaType.BTC_G_YEAR) {
            throw new XmlValueOutOfRangeException();
        }

        check_dated();

        if (_value == null) {
            return 0;
        }

        switch (code) {
            case SchemaType.BTC_G_DAY:
                return _value.getDay();
            case SchemaType.BTC_G_MONTH:
                return _value.getMonth();
            case SchemaType.BTC_G_YEAR:
                return _value.getYear();
            default:
                assert (false);
                throw new IllegalStateException();
        }
    }

    public GDate getGDateValue() {
        check_dated();

        if (_value == null) {
            return null;
        }

        return _value;
    }

    public Calendar getCalendarValue() {
        check_dated();

        if (_value == null) {
            return null;
        }

        return _value.getCalendar();
    }

    public Date getDateValue() {
        check_dated();

        if (_value == null) {
            return null;
        }

        return _value.getDate();
    }

    // setters
    protected void set_int(int v) {
        int code = schemaType().getPrimitiveType().getBuiltinTypeCode();

        if (code != SchemaType.BTC_G_DAY &&
            code != SchemaType.BTC_G_MONTH &&
            code != SchemaType.BTC_G_YEAR) {
            throw new XmlValueOutOfRangeException();
        }

        GDateBuilder value = new GDateBuilder();

        switch (code) {
            case SchemaType.BTC_G_DAY:
                value.setDay(v);
                break;
            case SchemaType.BTC_G_MONTH:
                value.setMonth(v);
                break;
            case SchemaType.BTC_G_YEAR:
                value.setYear(v);
                break;
        }

        if (_validateOnSet()) {
            validateValue(value, _schemaType, _voorVc);
        }

        _value = value.toGDate();
    }

    protected void set_GDate(GDateSpecification v) {
        int code = schemaType().getPrimitiveType().getBuiltinTypeCode();

        GDate candidate;

        if (v.isImmutable() && (v instanceof GDate) && v.getBuiltinTypeCode() == code) {
            candidate = (GDate) v;
        } else {
            // truncate extra fields from the date if necessary.
            if (v.getBuiltinTypeCode() != code) {
                GDateBuilder gDateBuilder = new GDateBuilder(v);
                gDateBuilder.setBuiltinTypeCode(code);
                v = gDateBuilder;
            }
            candidate = new GDate(v);
        }

        if (_validateOnSet()) {
            validateValue(candidate, _schemaType, _voorVc);
        }

        _value = candidate;
    }

    protected void set_Calendar(Calendar c) {
        int code = schemaType().getPrimitiveType().getBuiltinTypeCode();

        GDateBuilder gDateBuilder = new GDateBuilder(c);
        gDateBuilder.setBuiltinTypeCode(code);
        GDate value = gDateBuilder.toGDate();

        if (_validateOnSet()) {
            validateValue(value, _schemaType, _voorVc);
        }

        _value = value;
    }

    protected void set_Date(Date v) {
        int code = schemaType().getPrimitiveType().getBuiltinTypeCode();

        if (code != SchemaType.BTC_DATE && code != SchemaType.BTC_DATE_TIME ||
            v == null) {
            throw new XmlValueOutOfRangeException();
        }

        GDateBuilder gDateBuilder = new GDateBuilder(v);
        gDateBuilder.setBuiltinTypeCode(code);
        GDate value = gDateBuilder.toGDate();

        if (_validateOnSet()) {
            validateValue(value, _schemaType, _voorVc);
        }

        _value = value;
    }


    // comparators
    protected int compare_to(XmlObject obj) {
        return _value.compareToGDate(((XmlObjectBase) obj).getGDateValue());
    }

    protected boolean equal_to(XmlObject obj) {
        return _value.equals(((XmlObjectBase) obj).getGDateValue());
    }

    protected int value_hash_code() {
        return _value.hashCode();
    }

    protected void validate_simpleval(String lexical, ValidationContext ctx) {
        validateLexical(lexical, schemaType(), ctx);
        validateValue(getGDateValue(), schemaType(), ctx);
    }

}
