/*
 * Copyright 2008-present MongoDB, Inc.
 * Copyright 2018 Cezary Bartosiak
 *
 * 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.bson.codecs.jsr310;

import org.bson.codecs.Codec;
import org.bson.codecs.configuration.CodecProvider;
import org.bson.codecs.configuration.CodecRegistry;

import java.util.HashMap;
import java.util.Map;

A CodecProvider for JSR-310 Date and Time API classes.

Supplies the following JSR-310 based Codecs:

InstantCodec 
LocalDateCodec 
LocalDateTimeCodec 
LocalTimeCodec 
Requires Java 8 or greater.
Since:
3.7/**
 * A CodecProvider for JSR-310 Date and Time API classes.
 *
 * <p>
 * Supplies the following JSR-310 based Codecs:
 * <ul>
 * <li>{@link InstantCodec}
 * <li>{@link LocalDateCodec}
 * <li>{@link LocalDateTimeCodec}
 * <li>{@link LocalTimeCodec}
 * </ul>
 * <p>Requires Java 8 or greater.</p>
 *
 * @since 3.7
 */
public class Jsr310CodecProvider implements CodecProvider {
    private static final Map<Class<?>, Codec<?>> JSR310_CODEC_MAP = new HashMap<Class<?>, Codec<?>>();
    static {
        try {
            Class.forName("java.time.Instant"); // JSR-310 support canary test.
            putCodec(new InstantCodec());
            putCodec(new LocalDateCodec());
            putCodec(new LocalDateTimeCodec());
            putCodec(new LocalTimeCodec());
        } catch (ClassNotFoundException e) {
            // No JSR-310 support
        }
    }

    private static void putCodec(final Codec<?> codec) {
        JSR310_CODEC_MAP.put(codec.getEncoderClass(), codec);
    }

    @SuppressWarnings("unchecked")
    @Override
    public <T> Codec<T> get(final Class<T> clazz, final CodecRegistry registry) {
        return (Codec<T>) JSR310_CODEC_MAP.get(clazz);
    }
}