/*
 * Copyright 2014-2015 the original author or authors.
 *
 * 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.lastaflute.core.json;

import java.lang.reflect.Type;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;

import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonParseException;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
import com.google.gson.reflect.TypeToken;

/**
 * @author jflute
 */
public interface Java8TimeGson {

    // ===================================================================================
    //                                                                          Definition
    //                                                                          ==========
    // until supported by Gson
    Type localDateType = new TypeToken<LocalDate>() {
    }.getType();
    Type localDateTimeType = new TypeToken<LocalDateTime>() {
    }.getType();
    Type localTimeType = new TypeToken<LocalTime>() {
    }.getType();

    class LocalDatelizer implements JsonSerializer<LocalDate>, JsonDeserializer<LocalDate> {

        protected static final DateTimeFormatter formatter = DateTimeFormatter.ISO_LOCAL_DATE;

        @Override
        public JsonElement serialize(LocalDate src, Type typeOfSrc, JsonSerializationContext context) {
            return new JsonPrimitive(formatter.format(src));
        }

        @Override
        public LocalDate deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
            return formatter.parse(json.getAsString(), date -> LocalDate.from(date));
        }
    }

    class LocalDateTimelizer implements JsonSerializer<LocalDateTime>, JsonDeserializer<LocalDateTime> {

        protected static final DateTimeFormatter formatter = DateTimeFormatter.ISO_LOCAL_DATE_TIME;

        @Override
        public JsonElement serialize(LocalDateTime src, Type typeOfSrc, JsonSerializationContext context) {
            return new JsonPrimitive(formatter.format(src));
        }

        @Override
        public LocalDateTime deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
            return formatter.parse(json.getAsString(), date -> LocalDateTime.from(date));
        }
    }

    class LocalTimelizer implements JsonSerializer<LocalTime>, JsonDeserializer<LocalTime> {

        protected static final DateTimeFormatter formatter = DateTimeFormatter.ISO_LOCAL_DATE_TIME;

        @Override
        public JsonElement serialize(LocalTime src, Type typeOfSrc, JsonSerializationContext context) {
            return new JsonPrimitive(formatter.format(src));
        }

        @Override
        public LocalTime deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
            return formatter.parse(json.getAsString(), date -> LocalTime.from(date));
        }
    }
}

@@ -3218,37 +3218,32 @@
 atter.ISO_LOCAL_
-DATE_
 TIME;%0A%0A        @

fix local-time