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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 "Firestore/Source/API/FIRTransaction+Internal.h"
#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
#import "Firestore/Source/API/FIRDocumentSnapshot+Internal.h"
#import "Firestore/Source/API/FIRFirestore+Internal.h"
#import "Firestore/Source/API/FSTUserDataConverter.h"
#import "Firestore/Source/Core/FSTTransaction.h"
#import "Firestore/Source/Model/FSTDocument.h"
#import "Firestore/Source/Util/FSTAssert.h"
#import "Firestore/Source/Util/FSTUsageValidation.h"
NS_ASSUME_NONNULL_BEGIN
#pragma mark - FIRTransaction
@interface FIRTransaction ()
- (instancetype)initWithTransaction:(FSTTransaction *)transaction
firestore:(FIRFirestore *)firestore NS_DESIGNATED_INITIALIZER;
@property(nonatomic, strong, readonly) FSTTransaction *internalTransaction;
@property(nonatomic, strong, readonly) FIRFirestore *firestore;
@end
@implementation FIRTransaction (Internal)
+ (instancetype)transactionWithFSTTransaction:(FSTTransaction *)transaction
firestore:(FIRFirestore *)firestore {
return [[FIRTransaction alloc] initWithTransaction:transaction firestore:firestore];
}
@end
@implementation FIRTransaction
- (instancetype)initWithTransaction:(FSTTransaction *)transaction
firestore:(FIRFirestore *)firestore {
self = [super init];
if (self) {
_internalTransaction = transaction;
_firestore = firestore;
}
return self;
}
- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
forDocument:(FIRDocumentReference *)document {
return [self setData:data forDocument:document merge:NO];
}
- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
forDocument:(FIRDocumentReference *)document
merge:(BOOL)merge {
[self validateReference:document];
FSTParsedSetData *parsed = merge
? [self.firestore.dataConverter parsedMergeData:data fieldMask:nil]
: [self.firestore.dataConverter parsedSetData:data];
[self.internalTransaction setData:parsed forDocument:document.key];
return self;
}
- (FIRTransaction *)setData:(NSDictionary<NSString *, id> *)data
forDocument:(FIRDocumentReference *)document
mergeFields:(NSArray<id> *)mergeFields {
[self validateReference:document];
FSTParsedSetData *parsed =
[self.firestore.dataConverter parsedMergeData:data fieldMask:mergeFields];
[self.internalTransaction setData:parsed forDocument:document.key];
return self;
}
- (FIRTransaction *)updateData:(NSDictionary<id, id> *)fields
forDocument:(FIRDocumentReference *)document {
[self validateReference:document];
FSTParsedUpdateData *parsed = [self.firestore.dataConverter parsedUpdateData:fields];
[self.internalTransaction updateData:parsed forDocument:document.key];
return self;
}
- (FIRTransaction *)deleteDocument:(FIRDocumentReference *)document {
[self validateReference:document];
[self.internalTransaction deleteDocument:document.key];
return self;
}
- (void)getDocument:(FIRDocumentReference *)document
completion:(void (^)(FIRDocumentSnapshot *_Nullable document,
NSError *_Nullable error))completion {
[self validateReference:document];
[self.internalTransaction
lookupDocumentsForKeys:{document.key}
completion:^(NSArray<FSTMaybeDocument *> *_Nullable documents,
NSError *_Nullable error) {
if (error) {
completion(nil, error);
return;
}
FSTAssert(documents.count == 1,
@"Mismatch in docs returned from document lookup.");
FSTMaybeDocument *internalDoc = documents.firstObject;
if ([internalDoc isKindOfClass:[FSTDeletedDocument class]]) {
completion(nil, nil);
return;
}
FIRDocumentSnapshot *doc =
[FIRDocumentSnapshot snapshotWithFirestore:self.firestore
documentKey:internalDoc.key
document:(FSTDocument *)internalDoc
fromCache:NO];
completion(doc, nil);
}];
}
- (FIRDocumentSnapshot *_Nullable)getDocument:(FIRDocumentReference *)document
error:(NSError *__autoreleasing *)error {
[self validateReference:document];
dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
__block FIRDocumentSnapshot *result;
// We have to explicitly assign the innerError into a local to cause it to retain correctly.
__block NSError *outerError = nil;
[self getDocument:document
completion:^(FIRDocumentSnapshot *_Nullable snapshot, NSError *_Nullable innerError) {
result = snapshot;
outerError = innerError;
dispatch_semaphore_signal(semaphore);
}];
dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
if (error) {
*error = outerError;
}
return result;
}
- (void)validateReference:(FIRDocumentReference *)reference {
if (reference.firestore != self.firestore) {
FSTThrowInvalidArgument(@"Provided document reference is from a different Firestore instance.");
}
}
@end
NS_ASSUME_NONNULL_END
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