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/**
 *  Copyright (c) 2013 Nick Lloyd
 *  
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *  
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.
 *  
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  THE SOFTWARE.
 */
package com.github.nlloyd.hornofmongo.adaptor;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Undefined;
import org.mozilla.javascript.annotations.JSConstructor;
import org.mozilla.javascript.annotations.JSFunction;

/**
 * @author nlloyd
 * 
 */
public class BinData extends ScriptableMongoObject {

    private int type;
    private String data;

    /**
	 * 
	 */
    private static final long serialVersionUID = 8887293438121607724L;

    public BinData() {
    }

    @JSConstructor
    public BinData(int type, Object obj) {
        super();
        if(!(obj instanceof Undefined))
            setValues(type, obj);
    }
    
    public void setValues(int type, Object obj) {
        // carried over from sm_db.cpp, not v8_db.cpp which doesn't have this
        // check for some reason
        if ((type < 0) || (type > 255)) {
            throw new IllegalArgumentException(
                    "invalid BinData subtype -- range is 0..255 see bsonspec.org");
        }
        this.type = type;
        byte[] tmpData = new byte[]{};
        if(obj instanceof byte[]) {
            tmpData = (byte[])obj;
            this.data = Base64.encodeBase64String(tmpData);
        } else {
            this.data = Context.toString(obj);
            tmpData = Base64.decodeBase64(this.data);
        }
        put("type", this, type);
        put("len", this, tmpData.length);
    }

    /**
     * @see org.mozilla.javascript.ScriptableObject#getClassName()
     */
    @Override
    public String getClassName() {
        return this.getClass().getSimpleName();
    }

    @JSFunction
    public String toString() {
        return "BinData(" + type + ",\"" + data + "\")";
    }

    @JSFunction
    public String base64() {
        return data;
    }

    @JSFunction
    public String hex() {
        String hexStr = Hex.encodeHexString(Base64.decodeBase64(this.data));
        return hexStr;
    }

    public int getType() {
        return type;
    }

    public String getData() {
        return data;
    }

	public byte[] getDataBytes() {
		return Base64.decodeBase64(this.data);
	}
}