/**
 *  Copyright 2014 Ryszard Wiśniewski <brut.alll@gmail.com>
 *
 *  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 brut.androlib.res.data.value;

import brut.androlib.AndrolibException;
import brut.androlib.res.data.ResPackage;
import brut.androlib.res.data.ResResource;
import brut.androlib.res.xml.ResValuesXmlSerializable;
import brut.util.Duo;
import java.io.IOException;
import org.xmlpull.v1.XmlSerializer;

/**
 * @author Ryszard Wiśniewski <brut.alll@gmail.com>
 */
public class ResAttr extends ResBagValue implements ResValuesXmlSerializable {
    ResAttr(ResReferenceValue parentVal, int type, Integer min, Integer max,
            Boolean l10n) {
        super(parentVal);
        mType = type;
        mMin = min;
        mMax = max;
        mL10n = l10n;
    }

    public String convertToResXmlFormat(ResScalarValue value)
            throws AndrolibException {
        return null;
    }

    @Override
    public void serializeToResValuesXml(XmlSerializer serializer,
                                        ResResource res) throws IOException, AndrolibException {
        String type = getTypeAsString();

        serializer.startTag(null, "attr");
        serializer.attribute(null, "name", res.getResSpec().getName());
        if (type != null) {
            serializer.attribute(null, "format", type);
        }
        if (mMin != null) {
            serializer.attribute(null, "min", mMin.toString());
        }
        if (mMax != null) {
            serializer.attribute(null, "max", mMax.toString());
        }
        if (mL10n != null && mL10n) {
            serializer.attribute(null, "localization", "suggested");
        }
        serializeBody(serializer, res);
        serializer.endTag(null, "attr");
    }

    public static ResAttr factory(ResReferenceValue parent,
                                  Duo<Integer, ResScalarValue>[] items, ResValueFactory factory,
                                  ResPackage pkg) throws AndrolibException {

        int type = ((ResIntValue) items[0].m2).getValue();
        int scalarType = type & 0xffff;
        Integer min = null, max = null;
        Boolean l10n = null;
        int i;
        for (i = 1; i < items.length; i++) {
            switch (items[i].m1) {
                case BAG_KEY_ATTR_MIN:
                    min = ((ResIntValue) items[i].m2).getValue();
                    continue;
                case BAG_KEY_ATTR_MAX:
                    max = ((ResIntValue) items[i].m2).getValue();
                    continue;
                case BAG_KEY_ATTR_L10N:
                    l10n = ((ResIntValue) items[i].m2).getValue() != 0;
                    continue;
            }
            break;
        }

        if (i == items.length) {
            return new ResAttr(parent, scalarType, min, max, l10n);
        }
        Duo<ResReferenceValue, ResIntValue>[] attrItems = new Duo[items.length
                - i];
        int j = 0;
        for (; i < items.length; i++) {
            int resId = items[i].m1;
            pkg.addSynthesizedRes(resId);
            attrItems[j++] = new Duo<ResReferenceValue, ResIntValue>(
                    factory.newReference(resId, null),
                    (ResIntValue) items[i].m2);
        }
        switch (type & 0xff0000) {
            case TYPE_ENUM:
                return new ResEnumAttr(parent, scalarType, min, max, l10n,
                        attrItems);
            case TYPE_FLAGS:
                return new ResFlagsAttr(parent, scalarType, min, max, l10n,
                        attrItems);
        }

        throw new AndrolibException("Could not decode attr value");
    }

    protected void serializeBody(XmlSerializer serializer, ResResource res)
            throws AndrolibException, IOException {
    }

    protected String getTypeAsString() {
        String s = "";
        if ((mType & TYPE_REFERENCE) != 0) {
            s += "|reference";
        }
        if ((mType & TYPE_STRING) != 0) {
            s += "|string";
        }
        if ((mType & TYPE_INT) != 0) {
            s += "|integer";
        }
        if ((mType & TYPE_BOOL) != 0) {
            s += "|boolean";
        }
        if ((mType & TYPE_COLOR) != 0) {
            s += "|color";
        }
        if ((mType & TYPE_FLOAT) != 0) {
            s += "|float";
        }
        if ((mType & TYPE_DIMEN) != 0) {
            s += "|dimension";
        }
        if ((mType & TYPE_FRACTION) != 0) {
            s += "|fraction";
        }
        if (s.isEmpty()) {
            return null;
        }
        return s.substring(1);
    }

    private final int mType;
    private final Integer mMin;
    private final Integer mMax;
    private final Boolean mL10n;

    public static final int BAG_KEY_ATTR_TYPE = 0x01000000;
    private static final int BAG_KEY_ATTR_MIN = 0x01000001;
    private static final int BAG_KEY_ATTR_MAX = 0x01000002;
    private static final int BAG_KEY_ATTR_L10N = 0x01000003;

    private final static int TYPE_REFERENCE = 0x01;
    private final static int TYPE_STRING = 0x02;
    private final static int TYPE_INT = 0x04;
    private final static int TYPE_BOOL = 0x08;
    private final static int TYPE_COLOR = 0x10;
    private final static int TYPE_FLOAT = 0x20;
    private final static int TYPE_DIMEN = 0x40;
    private final static int TYPE_FRACTION = 0x80;
    private final static int TYPE_ANY_STRING = 0xee;

    private static final int TYPE_ENUM = 0x00010000;
    private static final int TYPE_FLAGS = 0x00020000;
}
