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/*
* 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 "FAuthTokenProvider.h"
#import "FUtilities.h"
#import "FIRAppInternal.h"
#import "FIRLogger.h"
#import "FIRDatabaseQuery_Private.h"
#import "FIRNoopAuthTokenProvider.h"
@interface FAuthStateListenerWrapper : NSObject
@property (nonatomic, copy) fbt_void_nsstring listener;
@property (nonatomic, weak) FIRApp *app;
@end
@implementation FAuthStateListenerWrapper
- (instancetype) initWithListener:(fbt_void_nsstring)listener app:(FIRApp *)app {
self = [super init];
if (self != nil) {
self->_listener = listener;
self->_app = app;
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(authStateDidChangeNotification:)
name:FIRAuthStateDidChangeInternalNotification
object:nil];
}
return self;
}
- (void) authStateDidChangeNotification:(NSNotification *)notification {
NSDictionary *userInfo = notification.userInfo;
FIRApp *authApp = userInfo[FIRAuthStateDidChangeInternalNotificationAppKey];
if (authApp == self.app) {
NSString *token = userInfo[FIRAuthStateDidChangeInternalNotificationTokenKey];
dispatch_async([FIRDatabaseQuery sharedQueue], ^{
self.listener(token);
});
}
}
- (void) dealloc {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
@end
@interface FIRFirebaseAuthTokenProvider : NSObject <FAuthTokenProvider>
@property (nonatomic, strong) FIRApp *app;
/** Strong references to the auth listeners as they are only weak in FIRFirebaseApp */
@property (nonatomic, strong) NSMutableArray *authListeners;
- (instancetype) initWithFirebaseApp:(FIRApp *)app;
@end
@implementation FIRFirebaseAuthTokenProvider
- (instancetype) initWithFirebaseApp:(FIRApp *)app {
self = [super init];
if (self != nil) {
self->_app = app;
self->_authListeners = [NSMutableArray array];
}
return self;
}
- (void) fetchTokenForcingRefresh:(BOOL)forceRefresh withCallback:(fbt_void_nsstring_nserror)callback {
// TODO: Don't fetch token if there is no current user
[self.app getTokenForcingRefresh:forceRefresh withCallback:^(NSString * _Nullable token, NSError * _Nullable error) {
dispatch_async([FIRDatabaseQuery sharedQueue], ^{
callback(token, error);
});
}];
}
- (void) listenForTokenChanges:(_Nonnull fbt_void_nsstring)listener {
FAuthStateListenerWrapper *wrapper = [[FAuthStateListenerWrapper alloc] initWithListener:listener app:self.app];
[self.authListeners addObject:wrapper];
}
@end
@implementation FAuthTokenProvider
+ (id<FAuthTokenProvider>) authTokenProviderForApp:(id)app {
return [[FIRFirebaseAuthTokenProvider alloc] initWithFirebaseApp:app];
}
@end
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