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/*
 * Copyright 2012-2017 Brian Campbell
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.jose4j.lang;

import org.jose4j.jwt.IntDate;

import java.util.List;
import java.util.Map;

/**
 */
public class JsonHelp
{
    public static String getString(Map map, String name)
    {
        Object object = map.get(name);
        return (String) object;
    }

    public static String getStringChecked(Map map, String name) throws JoseException
    {
        Object o = map.get(name);
        try
        {
            return (String) o;
        }
        catch (ClassCastException e)
        {
            throw new JoseException("'" + name + "' parameter was " + JsonHelp.jsonTypeName(o) + " type but is required to be a String.");
        }
    }

    public static List getStringArray(Map map, String name)
    {
        Object object = map.get(name);
        return (List) object;
    }

    public static IntDate getIntDate(Map map, String name)
    {
        long l = getLong(map, name);
        return IntDate.fromSeconds(l);
    }

    public static Long getLong(Map map, String name)
    {
        Object o = map.get(name);
        return o != null ? ((Number) o).longValue() : null;
    }

    public static String jsonTypeName(Object value)
    {
        String jsonTypeName;

        if (value instanceof Number)
        {
            jsonTypeName = "Number";
        }
        else if (value instanceof Boolean)
        {
            jsonTypeName = "Boolean";
        }
        else if (value instanceof List)
        {
            jsonTypeName = "Array";
        }
        else if (value instanceof Map)
        {
            jsonTypeName = "Object";
        }
        else if (value instanceof String)
        {
            jsonTypeName = "String";
        }
        else
        {
            jsonTypeName = "unknown";
        }

        return jsonTypeName;
    }
}