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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 "FIRDocumentSnapshot.h"
#import "Firestore/Source/API/FIRDocumentReference+Internal.h"
#import "Firestore/Source/API/FIRFieldPath+Internal.h"
#import "Firestore/Source/API/FIRFirestore+Internal.h"
#import "Firestore/Source/API/FIRSnapshotMetadata+Internal.h"
#import "Firestore/Source/Model/FSTDatabaseID.h"
#import "Firestore/Source/Model/FSTDocument.h"
#import "Firestore/Source/Model/FSTDocumentKey.h"
#import "Firestore/Source/Model/FSTFieldValue.h"
#import "Firestore/Source/Model/FSTPath.h"
#import "Firestore/Source/Util/FSTUsageValidation.h"
NS_ASSUME_NONNULL_BEGIN
@interface FIRDocumentSnapshot ()
- (instancetype)initWithFirestore:(FIRFirestore *)firestore
documentKey:(FSTDocumentKey *)documentKey
document:(nullable FSTDocument *)document
fromCache:(BOOL)fromCache NS_DESIGNATED_INITIALIZER;
@property(nonatomic, strong, readonly) FIRFirestore *firestore;
@property(nonatomic, strong, readonly) FSTDocumentKey *internalKey;
@property(nonatomic, strong, readonly, nullable) FSTDocument *internalDocument;
@property(nonatomic, assign, readonly) BOOL fromCache;
@end
@implementation FIRDocumentSnapshot (Internal)
+ (instancetype)snapshotWithFirestore:(FIRFirestore *)firestore
documentKey:(FSTDocumentKey *)documentKey
document:(nullable FSTDocument *)document
fromCache:(BOOL)fromCache {
return [[FIRDocumentSnapshot alloc] initWithFirestore:firestore
documentKey:documentKey
document:document
fromCache:fromCache];
}
@end
@implementation FIRDocumentSnapshot {
FIRSnapshotMetadata *_cachedMetadata;
}
@dynamic metadata;
- (instancetype)initWithFirestore:(FIRFirestore *)firestore
documentKey:(FSTDocumentKey *)documentKey
document:(nullable FSTDocument *)document
fromCache:(BOOL)fromCache {
if (self = [super init]) {
_firestore = firestore;
_internalKey = documentKey;
_internalDocument = document;
_fromCache = fromCache;
}
return self;
}
@dynamic exists;
- (BOOL)exists {
return _internalDocument != nil;
}
- (FIRDocumentReference *)reference {
return [FIRDocumentReference referenceWithKey:self.internalKey firestore:self.firestore];
}
- (NSString *)documentID {
return [self.internalKey.path lastSegment];
}
- (FIRSnapshotMetadata *)metadata {
if (!_cachedMetadata) {
_cachedMetadata = [FIRSnapshotMetadata
snapshotMetadataWithPendingWrites:self.internalDocument.hasLocalMutations
fromCache:self.fromCache];
}
return _cachedMetadata;
}
- (NSDictionary<NSString *, id> *)data {
FSTDocument *document = self.internalDocument;
if (!document) {
FSTThrowInvalidUsage(
@"NonExistentDocumentException",
@"Document '%@' doesn't exist. "
@"Check document.exists to make sure the document exists before calling document.data.",
self.internalKey);
}
return [self convertedObject:[self.internalDocument data]];
}
- (nullable id)objectForKeyedSubscript:(id)key {
FIRFieldPath *fieldPath;
if ([key isKindOfClass:[NSString class]]) {
fieldPath = [FIRFieldPath pathWithDotSeparatedString:key];
} else if ([key isKindOfClass:[FIRFieldPath class]]) {
fieldPath = key;
} else {
FSTThrowInvalidArgument(@"Subscript key must be an NSString or FIRFieldPath.");
}
FSTFieldValue *fieldValue = [[self.internalDocument data] valueForPath:fieldPath.internalValue];
return [self convertedValue:fieldValue];
}
- (id)convertedValue:(FSTFieldValue *)value {
if ([value isKindOfClass:[FSTObjectValue class]]) {
return [self convertedObject:(FSTObjectValue *)value];
} else if ([value isKindOfClass:[FSTArrayValue class]]) {
return [self convertedArray:(FSTArrayValue *)value];
} else if ([value isKindOfClass:[FSTReferenceValue class]]) {
FSTReferenceValue *ref = (FSTReferenceValue *)value;
FSTDatabaseID *refDatabase = ref.databaseID;
FSTDatabaseID *database = self.firestore.databaseID;
if (![refDatabase isEqualToDatabaseId:database]) {
// TODO(b/32073923): Log this as a proper warning.
NSLog(
@"WARNING: Document %@ contains a document reference within a different database "
"(%@/%@) which is not supported. It will be treated as a reference within the "
"current database (%@/%@) instead.",
self.reference.path, refDatabase.projectID, refDatabase.databaseID, database.projectID,
database.databaseID);
}
return [FIRDocumentReference referenceWithKey:ref.value firestore:self.firestore];
} else {
return value.value;
}
}
- (NSDictionary<NSString *, id> *)convertedObject:(FSTObjectValue *)objectValue {
NSMutableDictionary *result = [NSMutableDictionary dictionary];
[objectValue.internalValue
enumerateKeysAndObjectsUsingBlock:^(NSString *key, FSTFieldValue *value, BOOL *stop) {
result[key] = [self convertedValue:value];
}];
return result;
}
- (NSArray<id> *)convertedArray:(FSTArrayValue *)arrayValue {
NSArray<FSTFieldValue *> *internalValue = arrayValue.internalValue;
NSMutableArray *result = [NSMutableArray arrayWithCapacity:internalValue.count];
[internalValue enumerateObjectsUsingBlock:^(id value, NSUInteger idx, BOOL *stop) {
[result addObject:[self convertedValue:value]];
}];
return result;
}
@end
NS_ASSUME_NONNULL_END
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