/*

Copyright 2016, Knowledge Integration Ltd
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
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
    * Neither the name of Knowledge Integration Ltd nor the names of its
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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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,           
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*/

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

import java.util.Arrays;
import java.util.List;
import java.util.Properties;

import com.fasterxml.jackson.databind.node.ArrayNode;

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

public class InArray implements Function {

    @Override
    @SuppressWarnings("unchecked")
    public Object call(Properties bindings, Object[] args) {
        if (args.length == 2) {
            Object v = args[0];
            Object s = args[1];
            
            if (v != null && s != null && s instanceof String) {
                if (v.getClass().isArray()) {
                    Object[] a = (Object[]) v;
                    Object[] r = a.clone();
                    return Arrays.asList(r).contains(s);
                } else if (v instanceof ArrayNode) {
                    Object[] r = JSONUtilities.toArray((ArrayNode) v);
                    return Arrays.asList(r).contains(s);
                } else if (v instanceof List<?>) {
                    List<? extends Comparable<Object>> a = (List<? extends Comparable<Object>>) v;
                    return a.contains(s);
                }
                return new EvalError(ControlFunctionRegistry.getFunctionName(this) + " expects an array");
            }
            return new EvalError(ControlFunctionRegistry.getFunctionName(this) + " expects a string");
        }
        return new EvalError(ControlFunctionRegistry.getFunctionName(this) + " expects two parameters: an array and a string");
    }

    @Override
    public String getDescription() {
        return "Checks if array a contains string s";
    }
    
    @Override
    public String getParams() {
        return "array a, string s";
    }
    
    @Override
    public String getReturns() {
        return "boolean";
    }
}
