/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.oracle.jmx.remote.rest.json;

/**

 * @author harsha

 */

public class JSONPrimitive implements JSONElement {

    private final Object value;

    public JSONPrimitive(long i) {

        value = i;

    }

    public JSONPrimitive(double i) {

        value = i;

    }

    public JSONPrimitive(Boolean i) {

        value = i;

    }

    public JSONPrimitive(String s) {

        value = s;

    }

    public static String escape(String s) {

        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < s.length(); i++) {

            char ch = s.charAt(i);

            if (ch == '\\') {

                if (i < s.length() - 1 && (s.charAt(i + 1) == '\\' || s.charAt(i + 1) == '"')) {

                    sb.append(ch).append(s.charAt(i + 1));

                    i++;

                } else {

                    sb.append("\\\\");

                }

            } else if (ch == '"') {

                sb.append("\\\"");

            } else {

                sb.append(ch);

            }

        }

        return sb.toString();

    }

    public Object getValue() {

        return value;

    }

    @Override

    public String toJsonString() {

        if (value instanceof String) {

            return "\"" + escape(value.toString()) + "\"";

        }

        return value != null ? value.toString() : null;

    }

    @Override

    public int hashCode() {

        if (value instanceof String) {

            return ((String) value).hashCode();

        } else if (value instanceof Long) {

            return ((Long) value).hashCode();

        } else if (value instanceof Double) {

            return ((Double) value).hashCode();

        } else if (value instanceof Boolean) {

            return ((Boolean) value).hashCode();

        } else {

            return super.hashCode();

        }

    }

    @Override

    public boolean equals(Object obj) {

        if (obj == this) {

            return true;

        }

        if (!(obj instanceof JSONPrimitive)) {

            return false;

        }

        JSONPrimitive o = (JSONPrimitive) obj;

        if (value == null && o.getValue() == null) {

            return true;

        }

        if (value != null && o.getValue() != null) {

            if (value.getClass().equals(o.getValue().getClass())) {

                return value.equals(o.getValue());

            }

        }

        return false;

    }

}