/*
 * Copyright 2017 Google
 *
 * 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.
 */

#import "Firestore/Source/API/FIRListenerRegistration+Internal.h"

#import "Firestore/Source/Core/FSTFirestoreClient.h"
#import "Firestore/Source/Util/FSTAsyncQueryListener.h"

NS_ASSUME_NONNULL_BEGIN

@interface FSTListenerRegistration ()

/** The client that was used to register this listen. */
@property(nonatomic, strong, readonly) FSTFirestoreClient *client;

/** The async listener that is used to mute events synchronously. */
@property(nonatomic, strong, readonly) FSTAsyncQueryListener *asyncListener;

/** The internal FSTQueryListener that can be used to unlisten the query. */
@property(nonatomic, strong, readwrite) FSTQueryListener *internalListener;

@end

@implementation FSTListenerRegistration

- (instancetype)initWithClient:(FSTFirestoreClient *)client
                 asyncListener:(FSTAsyncQueryListener *)asyncListener
              internalListener:(FSTQueryListener *)internalListener {
  if (self = [super init]) {
    _client = client;
    _asyncListener = asyncListener;
    _internalListener = internalListener;
  }
  return self;
}

- (void)remove {
  [self.asyncListener mute];
  [self.client removeListener:self.internalListener];
  _internalListener = nil;
  _asyncListener = nil;
}

@end

NS_ASSUME_NONNULL_END