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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 "FIRStorageMetadata.h"
#import "FIRStorageConstants.h"
#import "FIRStorageConstants_Private.h"
#import "FIRStorageMetadata_Private.h"
#import "FIRStorageUtils.h"
// TODO: consider rewriting this using GTLR (GTLRStorageObjects.h)
@implementation FIRStorageMetadata
#pragma mark - Initializers
- (instancetype)init {
return [self initWithDictionary:[NSDictionary dictionary]];
}
- (instancetype)initWithDictionary:(NSDictionary *)dictionary {
self = [super init];
if (self) {
_initialMetadata = [dictionary copy];
_bucket = dictionary[kFIRStorageMetadataBucket];
_cacheControl = dictionary[kFIRStorageMetadataCacheControl];
_contentDisposition = dictionary[kFIRStorageMetadataContentDisposition];
_contentEncoding = dictionary[kFIRStorageMetadataContentEncoding];
_contentLanguage = dictionary[kFIRStorageMetadataContentLanguage];
_contentType = dictionary[kFIRStorageMetadataContentType];
_customMetadata = dictionary[kFIRStorageMetadataCustomMetadata];
_size = [dictionary[kFIRStorageMetadataSize] longLongValue];
_generation = [dictionary[kFIRStorageMetadataGeneration] longLongValue];
_metageneration = [dictionary[kFIRStorageMetadataMetageneration] longLongValue];
_timeCreated = [self dateFromRFC3339String:dictionary[kFIRStorageMetadataTimeCreated]];
_updated = [self dateFromRFC3339String:dictionary[kFIRStorageMetadataUpdated]];
_md5Hash = dictionary[kFIRStorageMetadataMd5Hash];
// GCS "name" is our path, our "name" is just the last path component of the path
_path = dictionary[kFIRStorageMetadataName];
_name = [_path lastPathComponent];
}
return self;
}
#pragma mark - NSObject overrides
- (instancetype)copyWithZone:(NSZone *)zone {
FIRStorageMetadata *clone =
[[[self class] allocWithZone:zone] initWithDictionary:[self dictionaryRepresentation]];
clone.initialMetadata = [self.initialMetadata copy];
return clone;
}
- (BOOL)isEqual:(id)object {
if (self == object) {
return YES;
}
if (![object isKindOfClass:[FIRStorageMetadata class]]) {
return NO;
}
BOOL isEqualObject = [self isEqualToFIRStorageMetadata:(FIRStorageMetadata *)object];
return isEqualObject;
}
- (BOOL)isEqualToFIRStorageMetadata:(FIRStorageMetadata *)metadata {
return [[self dictionaryRepresentation] isEqualToDictionary:[metadata dictionaryRepresentation]];
}
- (NSUInteger)hash {
NSUInteger hash = [[self dictionaryRepresentation] hash];
return hash;
}
- (NSString *)description {
NSDictionary *metadataDictionary = [self dictionaryRepresentation];
return [NSString stringWithFormat:@"%@ %p: %@", [self class], self, metadataDictionary];
}
#pragma mark - Public methods
- (NSDictionary *)dictionaryRepresentation {
NSMutableDictionary *metadataDictionary = [[NSMutableDictionary alloc] initWithCapacity:13];
if (_bucket) {
metadataDictionary[kFIRStorageMetadataBucket] = _bucket;
}
if (_cacheControl) {
metadataDictionary[kFIRStorageMetadataCacheControl] = _cacheControl;
}
if (_contentDisposition) {
metadataDictionary[kFIRStorageMetadataContentDisposition] = _contentDisposition;
}
if (_contentEncoding) {
metadataDictionary[kFIRStorageMetadataContentEncoding] = _contentEncoding;
}
if (_contentLanguage) {
metadataDictionary[kFIRStorageMetadataContentLanguage] = _contentLanguage;
}
if (_contentType) {
metadataDictionary[kFIRStorageMetadataContentType] = _contentType;
}
if (_md5Hash) {
metadataDictionary[kFIRStorageMetadataMd5Hash] = _md5Hash;
}
if (_customMetadata) {
metadataDictionary[kFIRStorageMetadataCustomMetadata] = _customMetadata;
}
if (_generation) {
NSString *generationString = [NSString stringWithFormat:@"%lld", _generation];
metadataDictionary[kFIRStorageMetadataGeneration] = generationString;
}
if (_metageneration) {
NSString *metagenerationString = [NSString stringWithFormat:@"%lld", _metageneration];
metadataDictionary[kFIRStorageMetadataMetageneration] = metagenerationString;
}
if (_timeCreated) {
metadataDictionary[kFIRStorageMetadataTimeCreated] = [self RFC3339StringFromDate:_timeCreated];
}
if (_updated) {
metadataDictionary[kFIRStorageMetadataUpdated] = [self RFC3339StringFromDate:_updated];
}
if (_path) {
metadataDictionary[kFIRStorageMetadataName] = _path;
}
if (_size) {
metadataDictionary[kFIRStorageMetadataSize] = [NSNumber numberWithLongLong:_size];
}
return [metadataDictionary copy];
}
- (BOOL)isFile {
return _type == FIRStorageMetadataTypeFile;
}
- (BOOL)isFolder {
return _type == FIRStorageMetadataTypeFolder;
}
#pragma mark - Private methods
+ (void)removeMatchingMetadata:(NSMutableDictionary *)metadata
oldMetadata:(NSDictionary *)oldMetadata {
for (NSString *metadataKey in [oldMetadata allKeys]) {
id oldValue = [oldMetadata objectForKey:metadataKey];
id newValue = [metadata objectForKey:metadataKey];
if (oldValue && !newValue) {
[metadata setObject:[NSNull null] forKey:metadataKey];
} else if ([oldValue isKindOfClass:[NSString class]] &&
[newValue isKindOfClass:[NSString class]]) {
if ([oldValue isEqualToString:newValue]) {
[metadata removeObjectForKey:metadataKey];
}
} else if ([oldValue isKindOfClass:[NSDictionary class]] &&
[newValue isKindOfClass:[NSDictionary class]]) {
NSMutableDictionary *nestedMetadata = [newValue mutableCopy];
[self removeMatchingMetadata:nestedMetadata oldMetadata:oldValue];
[metadata setObject:[nestedMetadata copy] forKey:metadataKey];
}
}
}
- (NSDictionary *)updatedMetadata {
NSMutableDictionary *metadataUpdate = [[self dictionaryRepresentation] mutableCopy];
[FIRStorageMetadata removeMatchingMetadata:metadataUpdate oldMetadata:_initialMetadata];
return [metadataUpdate copy];
}
#pragma mark - RFC 3339 conversions
static NSDateFormatter *sRFC3339DateFormatter;
static void setupDateFormatterOnce(void) {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sRFC3339DateFormatter = [[NSDateFormatter alloc] init];
NSLocale *enUSPOSIXLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
[sRFC3339DateFormatter setLocale:enUSPOSIXLocale];
[sRFC3339DateFormatter setDateFormat:@"yyyy'-'MM'-'dd'T'HH':'mm':'ss.SSSZZZZZ"];
[sRFC3339DateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
});
}
- (nullable NSDate *)dateFromRFC3339String:(NSString *)dateString {
setupDateFormatterOnce();
NSDate *rfc3339Date = [sRFC3339DateFormatter dateFromString:dateString];
return rfc3339Date;
}
- (nullable NSString *)RFC3339StringFromDate:(NSDate *)date {
setupDateFormatterOnce();
NSString *rfc3339String = [sRFC3339DateFormatter stringFromDate:date];
return rfc3339String;
}
@end
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