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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 "FIRStorage.h"
#import "FIRStorageConstants_Private.h"
#import "FIRStoragePath.h"
#import "FIRStorageReference.h"
#import "FIRStorageReference_Private.h"
#import "FIRStorageTokenAuthorizer.h"
#import "FIRStorageUtils.h"
#import "FIRStorage_Private.h"
#import <FirebaseCore/FIRApp.h>
#import <FirebaseCore/FIROptions.h>
#import <GTMSessionFetcher/GTMSessionFetcher.h>
#import <GTMSessionFetcher/GTMSessionFetcherLogging.h>
static NSMutableDictionary<
NSString * /* app name */,
NSMutableDictionary<NSString * /* bucket */, GTMSessionFetcherService *> *> *_fetcherServiceMap;
static GTMSessionFetcherRetryBlock _retryWhenOffline;
@implementation FIRStorage
+ (void)initialize {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_retryWhenOffline = ^(BOOL suggestedWillRetry, NSError *GTM_NULLABLE_TYPE error,
GTMSessionFetcherRetryResponse response) {
bool shouldRetry = suggestedWillRetry;
// GTMSessionFetcher does not consider being offline a retryable error, but we do, so we
// special-case it here.
if (!shouldRetry && error) {
shouldRetry = error.code == NSURLErrorNotConnectedToInternet;
}
response(shouldRetry);
};
_fetcherServiceMap = [[NSMutableDictionary alloc] init];
});
}
+ (GTMSessionFetcherService *)fetcherServiceForApp:(FIRApp *)app bucket:(NSString *)bucket {
@synchronized(_fetcherServiceMap) {
NSMutableDictionary *bucketMap = _fetcherServiceMap[app.name];
if (!bucketMap) {
bucketMap = [[NSMutableDictionary alloc] init];
_fetcherServiceMap[app.name] = bucketMap;
}
GTMSessionFetcherService *fetcherService = bucketMap[bucket];
if (!fetcherService) {
fetcherService = [[GTMSessionFetcherService alloc] init];
[fetcherService setRetryEnabled:YES];
[fetcherService setRetryBlock:_retryWhenOffline];
FIRStorageTokenAuthorizer *authorizer =
[[FIRStorageTokenAuthorizer alloc] initWithApp:app fetcherService:fetcherService];
[fetcherService setAuthorizer:authorizer];
bucketMap[bucket] = fetcherService;
}
return fetcherService;
}
}
+ (void)setGTMSessionFetcherLoggingEnabled:(BOOL)isLoggingEnabled {
[GTMSessionFetcher setLoggingEnabled:isLoggingEnabled];
}
+ (instancetype)storage {
return [self storageForApp:[FIRApp defaultApp]];
}
+ (instancetype)storageForApp:(FIRApp *)app {
NSString *url;
if (app.options.storageBucket) {
url = [app.options.storageBucket isEqualToString:@""]
? @""
: [@"gs://" stringByAppendingString:app.options.storageBucket];
}
return [self storageForApp:app URL:url];
}
+ (instancetype)storageWithURL:(NSString *)url {
return [self storageForApp:[FIRApp defaultApp] URL:url];
}
+ (instancetype)storageForApp:(FIRApp *)app URL:(NSString *)url {
if (!url) {
NSString *const kAppNotConfiguredMessage =
@"No default Storage bucket found. Did you configure Firebase Storage properly?";
[NSException raise:NSInvalidArgumentException format:kAppNotConfiguredMessage];
}
NSString *bucket;
if ([url isEqualToString:@""]) {
bucket = @"";
} else {
FIRStoragePath *path;
@try {
path = [FIRStoragePath pathFromGSURI:url];
} @catch (NSException *e) {
[NSException raise:NSInternalInconsistencyException
format:@"URI must be in the form of gs://<bucket>/"];
}
if (path.object != nil && ![path.object isEqualToString:@""]) {
[NSException raise:NSInternalInconsistencyException
format:@"Storage bucket cannot be initialized with a path"];
}
bucket = path.bucket;
}
return [[self alloc] initWithApp:app bucket:bucket];
}
- (instancetype)initWithApp:(FIRApp *)app bucket:(NSString *)bucket {
self = [super init];
if (self) {
_app = app;
_storageBucket = bucket;
_fetcherServiceForApp = [FIRStorage fetcherServiceForApp:_app bucket:bucket];
_maxDownloadRetryTime = 600.0;
_maxOperationRetryTime = 120.0;
_maxUploadRetryTime = 600.0;
}
return self;
}
#pragma mark - NSObject overrides
- (instancetype)copyWithZone:(NSZone *)zone {
FIRStorage *storage = [[[self class] allocWithZone:zone] initWithApp:_app bucket:_storageBucket];
storage.callbackQueue = _callbackQueue;
return storage;
}
// Two FIRStorage objects are equal if they use the same app
- (BOOL)isEqual:(id)object {
if (self == object) {
return YES;
}
if (![object isKindOfClass:[FIRStorage class]]) {
return NO;
}
BOOL isEqualObject = [self isEqualToFIRStorage:(FIRStorage *)object];
return isEqualObject;
}
- (BOOL)isEqualToFIRStorage:(FIRStorage *)storage {
BOOL isEqual = [_app isEqual:storage->_app];
return isEqual;
}
- (NSUInteger)hash {
NSUInteger hash = [_app hash] ^ [_callbackQueue hash];
return hash;
}
- (NSString *)description {
return [NSString stringWithFormat:@"%@ %p: %@", [self class], self, _app];
}
#pragma mark - Public methods
- (FIRStorageReference *)reference {
FIRStoragePath *path = [[FIRStoragePath alloc] initWithBucket:_storageBucket object:nil];
return [[FIRStorageReference alloc] initWithStorage:self path:path];
}
- (FIRStorageReference *)referenceForURL:(NSString *)string {
FIRStoragePath *path = [FIRStoragePath pathFromString:string];
// If no default bucket exists (empty string), accept anything.
if ([_storageBucket isEqual:@""]) {
FIRStorageReference *reference = [[FIRStorageReference alloc] initWithStorage:self path:path];
return reference;
}
// If there exists a default bucket, throw if provided a different bucket.
if (![path.bucket isEqual:_storageBucket]) {
NSString *const kInvalidBucketFormat =
@"Provided bucket: %@ does not match the Storage bucket of the current instance: %@";
[NSException raise:NSInvalidArgumentException
format:kInvalidBucketFormat, path.bucket, _storageBucket];
}
FIRStorageReference *reference = [[FIRStorageReference alloc] initWithStorage:self path:path];
return reference;
}
- (FIRStorageReference *)referenceWithPath:(NSString *)string {
FIRStorageReference *reference = [[self reference] child:string];
return reference;
}
- (void)setCallbackQueue:(dispatch_queue_t)callbackQueue {
_fetcherServiceForApp.callbackQueue = callbackQueue;
}
#pragma mark - Background tasks
+ (void)enableBackgroundTasks:(BOOL)isEnabled {
[NSException raise:NSGenericException format:@"enableBackgroundTasks not implemented"];
}
- (NSArray<FIRStorageUploadTask *> *)uploadTasks {
[NSException raise:NSGenericException format:@"getUploadTasks not implemented"];
return nil;
}
- (NSArray<FIRStorageDownloadTask *> *)downloadTasks {
[NSException raise:NSGenericException format:@"getDownloadTasks not implemented"];
return nil;
}
@end
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