/*
 * 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 <XCTest/XCTest.h>

#import <FirebaseCore/FIRApp.h>

#import "FTestHelpers.h"
#import "FTestAuthTokenGenerator.h"
#import "FIRTestAuthTokenProvider.h"
#import "FIRDatabaseConfig_Private.h"
#import "FTestBase.h"

@interface FIRAuthTests : FTestBase

@end

@implementation FIRAuthTests

- (void)setUp {
    [super setUp];
}

- (void)tearDown {
    [super tearDown];
}

- (void)testListensAndAuthRaceCondition {
    [FIRDatabase setLoggingEnabled:YES];
    id<FAuthTokenProvider> tokenProvider = [FAuthTokenProvider authTokenProviderForApp:[FIRApp defaultApp]];

    FIRDatabaseConfig *config = [FIRDatabaseConfig configForName:@"testWritesRestoredAfterAuth"];
    config.authTokenProvider = tokenProvider;

    FIRDatabaseReference *ref = [[[FIRDatabaseReference alloc] initWithConfig:config] childByAutoId];

    __block BOOL done = NO;

    [[[ref root] child:@".info/connected"] observeEventType:FIRDataEventTypeValue withBlock:^void(
            FIRDataSnapshot *snapshot) {
        if ([snapshot.value boolValue]) {
            // Start a listen before auth credentials are restored.
            [ref observeEventType:FIRDataEventTypeValue withBlock:^(FIRDataSnapshot *snapshot) {

            }];

            // subsequent writes should complete successfully.
            [ref setValue:@42 withCompletionBlock:^(NSError *error, FIRDatabaseReference *ref) {
               done = YES;
            }];
        }
    }];

    WAIT_FOR(done);
}
@end