/*

Copyright 2010,2011 Google Inc.
All rights reserved.

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modification, are permitted provided that the following conditions are
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    * Redistributions of source code must retain the above copyright
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    * Redistributions in binary form must reproduce the above
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contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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*/

package com.google.refine.expr.functions.xml;

import java.util.Properties;
import com.google.refine.expr.functions.Type;

import com.google.refine.grel.EvalErrorMessage;
import com.google.refine.grel.FunctionDescription;
import org.jsoup.nodes.Element;

import com.google.refine.expr.EvalError;
import com.google.refine.grel.ControlFunctionRegistry;
import com.google.refine.grel.Function;

public class WholeText implements Function {

    @Override
    public Object call(Properties bindings, Object[] args) {
        if (args.length == 1) {
            Object o1 = args[0];
            if (o1 != null && o1 instanceof Element) {
                Element e1 = (Element) o1;
                return e1.wholeText();

            } else {
                // new Type().call(bindings, args) + "' and failed as the first parameter is not an XML or HTML Element.
                // Please first use parseXml() or parseHtml() and select(query) prior to using this function");
                return new EvalError(EvalErrorMessage.xml_text_cannot_work_with_and_failed(ControlFunctionRegistry.getFunctionName(this),
                        new Type().call(bindings, args)));
            }
        }
        // Type().call(bindings, args) + "' and expects a single XML or HTML element as an argument");
        return new EvalError(EvalErrorMessage.xml_text_cannot_work_with_and_expects(ControlFunctionRegistry.getFunctionName(this),
                new Type().call(bindings, args)));
    }

    @Override
    public String getDescription() {
        return FunctionDescription.xml_wholetext();
    }

    @Override
    public String getParams() {
        return "element e";
    }

    @Override
    public String getReturns() {
        return "string";
    }
}
