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/*
 * Copyright 2023 Responsive Computing, Inc.
 *
 * 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 dev.responsive.kafka.internal.stores;

import java.util.Map;
import org.apache.kafka.common.serialization.Serde;
import org.apache.kafka.common.utils.Time;
import org.apache.kafka.streams.processor.StateStore;
import org.apache.kafka.streams.state.StoreBuilder;
import org.apache.kafka.streams.state.StoreSupplier;

public class ResponsiveStoreBuilder implements StoreBuilder {

  private final StoreType storeType;
  private final StoreSupplier userStoreSupplier;
  private final StoreBuilder userStoreBuilder;
  private final Serde keySerde;
  // Note: the valueSerde is not necessary of type V, eg in case of timestamped stores
  private final Serde valueSerde;
  private final Time time;

  public enum StoreType {
    KEY_VALUE,
    TIMESTAMPED_KEY_VALUE,
    WINDOW,
    TIMESTAMPED_WINDOW,
    SESSION
  }

  public ResponsiveStoreBuilder(
      final StoreType storeType,
      final StoreSupplier userStoreSupplier,
      final StoreBuilder userStoreBuilder,
      final Serde keySerde,
      final Serde valueSerde
  ) {
    // the time parameter only exists for Streams unit tests and in non-testing code
    // will always hard-code Time.SYSTEM
    this(
        storeType,
        userStoreSupplier,
        userStoreBuilder,
        keySerde,
        valueSerde,
        Time.SYSTEM
    );
  }

  private ResponsiveStoreBuilder(
      final StoreType storeType,
      final StoreSupplier userStoreSupplier,
      final StoreBuilder userStoreBuilder,
      final Serde keySerde,
      final Serde valueSerde,
      final Time time
  ) {
    this.storeType = storeType;
    this.userStoreSupplier = userStoreSupplier;
    this.userStoreBuilder = userStoreBuilder;
    this.keySerde = keySerde;
    this.valueSerde = valueSerde;
    this.time = time;
  }

  public StoreType storeType() {
    return storeType;
  }

  public StoreSupplier storeSupplier() {
    return userStoreSupplier;
  }

  public Serde keySerde() {
    return keySerde;
  }

  // For timestamped stores, this will be the serde for the inner value type
  // which will not be the same type as V, which is the store's actual V type
  // (and would actually be TimestampAndValue for timestamped stores)
  @SuppressWarnings("unchecked")
  public  Serde innerValueSerde() {
    return (Serde) valueSerde;
  }

  public Time time() {
    return time;
  }

  @Override
  public StoreBuilder withCachingEnabled() {
    userStoreBuilder.withCachingEnabled();
    return this;
  }

  @Override
  public StoreBuilder withCachingDisabled() {
    userStoreBuilder.withCachingDisabled();
    return this;
  }

  @Override
  public StoreBuilder withLoggingEnabled(final Map config) {
    userStoreBuilder.withLoggingEnabled(config);
    return this;
  }

  @Override
  public StoreBuilder withLoggingDisabled() {
    userStoreBuilder.withLoggingDisabled();
    throw new UnsupportedOperationException(
        "Responsive stores are currently incompatible with disabling the changelog. "
            + "Please reach out to us to request this feature.");
  }

  @Override
  public T build() {
    return userStoreBuilder.build();
  }

  @Override
  public Map logConfig() {
    return userStoreBuilder.logConfig();
  }

  @Override
  public boolean loggingEnabled() {
    return userStoreBuilder.loggingEnabled();
  }

  @Override
  public String name() {
    return userStoreBuilder.name();
  }

}