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/*
 * Copyright © 2019 Dominokit
 *
 * 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.dominokit.jacksonapt.deser.map.key;

import static org.gwtproject.i18n.shared.DateTimeFormat.PredefinedFormat;
import static org.gwtproject.i18n.shared.DateTimeFormat.getFormat;

import java.util.Date;
import org.dominokit.jacksonapt.exception.JsonDeserializationException;
import org.gwtproject.i18n.shared.DateTimeFormat;

/** JsDateKeyParser class. */
public class JsDateKeyParser implements DateKeyParser {

  private static final DateTimeFormat ISO_8601_FORMAT = getFormat(PredefinedFormat.ISO_8601);

  private static final DateTimeFormat RFC_2822_FORMAT = getFormat(PredefinedFormat.RFC_2822);

  /** {@inheritDoc} */
  @Override
  public D parse(String keyValue, DateDeserializer deserializer) {
    try {
      return deserializer.deserializeDate(ISO_8601_FORMAT.parse(keyValue));
    } catch (IllegalArgumentException e) {
      // can happen if it's not the correct format
    }

    // maybe it's in milliseconds
    try {
      return deserializer.deserializeMillis(Long.parseLong(keyValue));
    } catch (NumberFormatException e) {
      // can happen if the keyValue is string-based like an ISO-8601 format
    }

    // or in RFC-2822
    try {
      return deserializer.deserializeDate(RFC_2822_FORMAT.parse(keyValue));
    } catch (IllegalArgumentException e) {
      // can happen if it's not the correct format
    }

    throw new JsonDeserializationException(
        "Cannot parse the keyValue '" + keyValue + "' as a date");
  }
}