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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/Model/FSTDocumentKey.h"
#import "Firestore/Source/Core/FSTFirestoreClient.h"
#import "Firestore/Source/Model/FSTPath.h"
#import "Firestore/Source/Util/FSTAssert.h"
NS_ASSUME_NONNULL_BEGIN
@interface FSTDocumentKey ()
/** The path to the document. */
@property(strong, nonatomic, readwrite) FSTResourcePath *path;
@end
@implementation FSTDocumentKey
+ (instancetype)keyWithPath:(FSTResourcePath *)path {
return [[FSTDocumentKey alloc] initWithPath:path];
}
+ (instancetype)keyWithSegments:(NSArray<NSString *> *)segments {
return [FSTDocumentKey keyWithPath:[FSTResourcePath pathWithSegments:segments]];
}
+ (instancetype)keyWithPathString:(NSString *)resourcePath {
NSArray<NSString *> *segments = [resourcePath componentsSeparatedByString:@"/"];
return [FSTDocumentKey keyWithSegments:segments];
}
/** Designated initializer. */
- (instancetype)initWithPath:(FSTResourcePath *)path {
FSTAssert([FSTDocumentKey isDocumentKey:path], @"invalid document key path: %@", path);
if (self = [super init]) {
_path = path;
}
return self;
}
- (BOOL)isEqual:(id)object {
if (self == object) {
return YES;
}
if (![object isKindOfClass:[FSTDocumentKey class]]) {
return NO;
}
return [self isEqualToKey:(FSTDocumentKey *)object];
}
- (NSUInteger)hash {
return self.path.hash;
}
- (NSString *)description {
return [NSString stringWithFormat:@"<FSTDocumentKey: %@>", self.path];
}
/** Implements NSCopying without actually copying because FSTDocumentKeys are immutable. */
- (id)copyWithZone:(NSZone *_Nullable)zone {
return self;
}
- (BOOL)isEqualToKey:(FSTDocumentKey *)other {
return FSTDocumentKeyComparator(self, other) == NSOrderedSame;
}
- (NSComparisonResult)compare:(FSTDocumentKey *)other {
return FSTDocumentKeyComparator(self, other);
}
+ (NSComparator)comparator {
return ^NSComparisonResult(id obj1, id obj2) {
return [obj1 compare:obj2];
};
}
+ (BOOL)isDocumentKey:(FSTResourcePath *)path {
return path.length % 2 == 0;
}
@end
const NSComparator FSTDocumentKeyComparator =
^NSComparisonResult(FSTDocumentKey *key1, FSTDocumentKey *key2) {
return [key1.path compare:key2.path];
};
NSString *const kDocumentKeyPath = @"__name__";
NS_ASSUME_NONNULL_END
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