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/*
 * The MIT License
 *
 * Copyright (c) 2009-2025 PrimeTek Informatics
 *
 * 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 org.primefaces.el;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.function.Supplier;

import javax.el.ValueExpression;
import javax.faces.component.StateHelper;
import javax.faces.context.FacesContext;

public class ValueExpressionStateHelper implements StateHelper {
    private static final Object UNKNOWN_VALUE = new Object();

    protected Map literals;
    protected Map bindings;

    private boolean transientFlag;

    @Override
    public Object put(Serializable key, Object value) {
        if (literals == null) {
            literals = new HashMap<>(3);
        }

        return literals.put(String.valueOf(key), value);
    }

    @Override
    public Object remove(Serializable key) {
        Object previous = eval(key);

        if (literals != null) {
            literals.remove(String.valueOf(key));
        }

        if (bindings != null) {
            bindings.remove(String.valueOf(key));
        }

        return previous;
    }

    @Override
    public Object put(Serializable key, String mapKey, Object value) {
        Map internalMap = (Map) get(key);
        if (internalMap == null) {
            internalMap = new HashMap<>(3);
            put(key, internalMap);
        }

        return internalMap.put(mapKey, value);
    }

    @Override
    public Object get(Serializable key) {
        if (literals == null) {
            return null;
        }

        return literals.get(String.valueOf(key));
    }

    @Override
    public Object eval(Serializable key) {
        return eval(key, null);
    }

    @Override
    public Object eval(Serializable key, Object defaultValue) {
        Object literal = get(String.valueOf(key));
        if (literal != null) {
            return literal;
        }

        if (bindings == null) {
            return defaultValue;
        }

        ValueExpression ve = bindings.get(String.valueOf(key));
        if (ve == null) {
            return defaultValue;
        }

        return ve.getValue(FacesContext.getCurrentInstance().getELContext());
    }

    // @Override (we can't actually override right now because this is a new method in Faces 4.0)
    public Object eval(Serializable key, Supplier