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package com.cedarsoftware.util.convert;

import java.time.ZoneId;
import java.time.ZoneOffset;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.TimeZone;

import static com.cedarsoftware.util.convert.MapConversions.ZONE_OFFSET;

/**
 * @author John DeRegnaucourt ([email protected])
 *         

 *         Copyright (c) Cedar Software LLC
 *         


 *         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
 *         


 *         License
 *         


 *         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.
 */
final class ZoneOffsetConversions {

    private ZoneOffsetConversions() {
    }

    static Map toMap(Object from, Converter converter) {
        ZoneOffset offset = (ZoneOffset) from;
        Map target = new LinkedHashMap<>();
        target.put(ZONE_OFFSET, offset.getId());  // Uses ISO-8601 format (+HH:MM, +HH:MM:SS, or Z)
        return target;
    }

    static ZoneId toZoneId(Object from, Converter converter) {
        return (ZoneId) from;
    }

    static TimeZone toTimeZone(Object from, Converter converter) {
        ZoneOffset offset = (ZoneOffset) from;
        // Ensure we create the TimeZone with the correct GMT offset format
        String id = offset.equals(ZoneOffset.UTC) ? "GMT" : "GMT" + offset.getId();
        return TimeZone.getTimeZone(id);
    }
}