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package org.constretto.model;

import org.apache.commons.lang.StringUtils;

import java.util.*;

/**
 * @author Kaare Nilsen
 */
public class CObject extends CValue {
    private final Map data;

    public CObject(Map data) {

        if (data == null) {
            throw new NullPointerException("The \"data\" argument can not be null");
        }
        this.data = data;
    }

    public Map data() {
        return data == null ? Collections.emptyMap() : Collections.unmodifiableMap(data);
    }

    @Override
    public Set referencedKeys() {
        Set referencedKeys = new HashSet();
        for (CValue value : data.values()) {
            if (value != null) {
                referencedKeys.addAll(value.referencedKeys());
            }
        }
        return referencedKeys;
    }

    @Override
    public void replace(String key, String resolvedValue) {
        for (CValue value : data.values()) {
            if (value != null) {
                value.replace(key, resolvedValue);
            }
        }
    }

    @Override
    public String toString() {
        StringBuilder stringBuilder = new StringBuilder("{");
        final int length = data.entrySet().size();
        int elementsAdded = 0;
        for (Map.Entry entry : data.entrySet()) {
            stringBuilder.append(entry.getKey());
            stringBuilder.append(':');
            stringBuilder.append(entry.getValue() == null ? "null" : entry.getValue().toString());
            elementsAdded++;
            if (elementsAdded < length) {
                stringBuilder.append(", ");
            }
        }
        return stringBuilder.append("}").toString();
    }

    @Override
    public boolean equals(final Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        final CObject cObject = (CObject) o;

        if (data != null ? !data.equals(cObject.data) : cObject.data != null) return false;

        return true;
    }

    @Override
    public int hashCode() {
        return data != null ? data.hashCode() : 0;
    }
}