/*
    * Copyright 2021 TiKV Project 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.tikv.common.event;
  
  import java.io.Serializable;
  
  public class CacheInvalidateEvent implements Serializable {
    private final long regionId;
    private final long storeId;
    private final CacheType cacheType;
    private boolean invalidateRegion;
    private boolean invalidateStore;
  
    public CacheInvalidateEvent(
        long regionId, long storeId, boolean updateRegion, boolean updateStore, CacheType type) {
      this.regionId = regionId;
      this.storeId = storeId;
      this.cacheType = type;
      if (updateRegion) {
        invalidateRegion();
      }
  
      if (updateStore) {
        invalidateStore();
      }
    }
  
    public long getRegionId() {
      return regionId;
    }
  
    public long getStoreId() {
      return storeId;
    }
  
    @Override
    public boolean equals(Object obj) {
      if (obj == this) {
        return true;
      } else if (obj instanceof CacheInvalidateEvent) {
        CacheInvalidateEvent event = (CacheInvalidateEvent) obj;
        return event.getRegionId() == getRegionId()
            && event.getStoreId() == getStoreId()
            && event.getCacheType() == getCacheType();
      }
      return false;
    }
  
    @Override
    public int hashCode() {
      int result = 1106;
      result += result * 31 + getStoreId();
      result += result * 31 + getRegionId();
      result += result * 31 + getCacheType().name().hashCode();
      return result;
    }
  
    public void invalidateRegion() {
      invalidateRegion = true;
    }
  
    public void invalidateStore() {
      invalidateStore = true;
    }
  
    public boolean shouldUpdateRegion() {
      return invalidateRegion;
    }
  
    public boolean shouldUpdateStore() {
      return invalidateStore;
    }
  
    public CacheType getCacheType() {
      return cacheType;
    }
  
    @Override
    public String toString() {
      return String.format("RegionId=%d,StoreId=%d,Type=%s", regionId, storeId, cacheType.name());
    }
  
    public enum CacheType implements Serializable {
      REGION_STORE,
     STORE,
     REGION,
     REQ_FAILED,
     LEADER
   }
 }