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/*
 * Copyright 2013 Nicolas Morel
 *
 * 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.jackson.deser;

import java.sql.Time;
import java.sql.Timestamp;
import java.util.Date;
import org.dominokit.jackson.JacksonContextProvider;
import org.dominokit.jackson.JsonDeserializationContext;
import org.dominokit.jackson.JsonDeserializer;
import org.dominokit.jackson.JsonDeserializerParameters;
import org.dominokit.jackson.stream.JsonReader;
import org.dominokit.jackson.stream.JsonToken;

/** Base implementation of {@link org.dominokit.jackson.JsonDeserializer} for dates. */
public abstract class BaseDateJsonDeserializer extends JsonDeserializer {

  /** Default implementation of {@link BaseDateJsonDeserializer} for {@link Date} */
  public static final class DateJsonDeserializer extends BaseDateJsonDeserializer {

    private static final DateJsonDeserializer INSTANCE = new DateJsonDeserializer();

    /** @return an instance of {@link DateJsonDeserializer} */
    public static DateJsonDeserializer getInstance() {
      return INSTANCE;
    }

    private DateJsonDeserializer() {}

    @Override
    protected Date deserializeNumber(long millis, JsonDeserializerParameters params) {
      return new Date(millis);
    }

    @Override
    protected Date deserializeString(
        String date, JsonDeserializationContext ctx, JsonDeserializerParameters params) {
      return JacksonContextProvider.get()
          .dateFormat()
          .parse(ctx.isUseBrowserTimezone(), params.getPattern(), null, date);
    }
  }

  /** Default implementation of {@link BaseDateJsonDeserializer} for {@link java.sql.Date} */
  public static final class SqlDateJsonDeserializer
      extends BaseDateJsonDeserializer {

    private static final SqlDateJsonDeserializer INSTANCE = new SqlDateJsonDeserializer();

    private static final String SQL_DATE_FORMAT = "yyyy-MM-dd";

    /** @return an instance of {@link SqlDateJsonDeserializer} */
    public static SqlDateJsonDeserializer getInstance() {
      return INSTANCE;
    }

    private SqlDateJsonDeserializer() {}

    @Override
    protected java.sql.Date deserializeNumber(long millis, JsonDeserializerParameters params) {
      return new java.sql.Date(millis);
    }

    @Override
    protected java.sql.Date deserializeString(
        String date, JsonDeserializationContext ctx, JsonDeserializerParameters params) {
      return new java.sql.Date(
          JacksonContextProvider.get()
              .dateFormat()
              .parse(ctx.isUseBrowserTimezone(), SQL_DATE_FORMAT, false, date)
              .getTime());
    }
  }

  /** Default implementation of {@link BaseDateJsonDeserializer} for {@link Time} */
  public static final class SqlTimeJsonDeserializer extends BaseDateJsonDeserializer {

    private static final SqlTimeJsonDeserializer INSTANCE = new SqlTimeJsonDeserializer();

    /** @return an instance of {@link SqlTimeJsonDeserializer} */
    public static SqlTimeJsonDeserializer getInstance() {
      return INSTANCE;
    }

    private SqlTimeJsonDeserializer() {}

    @Override
    protected Time deserializeNumber(long millis, JsonDeserializerParameters params) {
      return new Time(millis);
    }

    @Override
    protected Time deserializeString(
        String date, JsonDeserializationContext ctx, JsonDeserializerParameters params) {
      return Time.valueOf(date);
    }
  }

  /** Default implementation of {@link BaseDateJsonDeserializer} for {@link Timestamp} */
  public static final class SqlTimestampJsonDeserializer
      extends BaseDateJsonDeserializer {

    private static final SqlTimestampJsonDeserializer INSTANCE = new SqlTimestampJsonDeserializer();

    /** @return an instance of {@link SqlTimestampJsonDeserializer} */
    public static SqlTimestampJsonDeserializer getInstance() {
      return INSTANCE;
    }

    private SqlTimestampJsonDeserializer() {}

    @Override
    protected Timestamp deserializeNumber(long millis, JsonDeserializerParameters params) {
      return new Timestamp(millis);
    }

    @Override
    protected Timestamp deserializeString(
        String date, JsonDeserializationContext ctx, JsonDeserializerParameters params) {
      return new Timestamp(
          JacksonContextProvider.get()
              .dateFormat()
              .parse(ctx.isUseBrowserTimezone(), params.getPattern(), null, date)
              .getTime());
    }
  }

  /** {@inheritDoc} */
  @Override
  public D doDeserialize(
      JsonReader reader, JsonDeserializationContext ctx, JsonDeserializerParameters params) {
    if (params.getShape().isNumeric() || JsonToken.NUMBER.equals(reader.peek())) {
      return deserializeNumber(reader.nextLong(), params);
    } else {
      return deserializeString(reader.nextString(), ctx, params);
    }
  }

  /**
   * deserializeNumber
   *
   * @param millis a long.
   * @param params a {@link org.dominokit.jackson.JsonDeserializerParameters} object.
   * @return a D object.
   */
  protected abstract D deserializeNumber(long millis, JsonDeserializerParameters params);

  /**
   * deserializeString
   *
   * @param date a {@link java.lang.String} object.
   * @param ctx a {@link org.dominokit.jackson.JsonDeserializationContext} object.
   * @param params a {@link org.dominokit.jackson.JsonDeserializerParameters} object.
   * @return a D object.
   */
  protected abstract D deserializeString(
      String date, JsonDeserializationContext ctx, JsonDeserializerParameters params);
}