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//
// SDLFile.m
// SmartDeviceLink-iOS
//
// Created by Joel Fischer on 10/14/15.
// Copyright © 2015 smartdevicelink. All rights reserved.
//
#import "SDLFile.h"
#import "SDLFileManager.h"
#import "SDLFileType.h"
NS_ASSUME_NONNULL_BEGIN
@interface SDLFile ()
@property (copy, nonatomic, readwrite, nullable) NSURL *fileURL;
@property (copy, nonatomic, readwrite) NSData *data;
@property (strong, nonatomic, readwrite) SDLFileType fileType;
@property (assign, nonatomic, readwrite) BOOL persistent;
@property (copy, nonatomic, readwrite) NSString *name;
@property (nonatomic, readwrite) NSInputStream *inputStream;
@property (assign, nonatomic, readwrite) BOOL isStaticIcon;
@end
@implementation SDLFile
#pragma mark - Lifecycle
- (instancetype)initWithFileURL:(NSURL *)url name:(NSString *)name persistent:(BOOL)persistent {
self = [super init];
if (!self) {
return nil;
}
BOOL exists = url.isFileURL && [url checkResourceIsReachableAndReturnError:nil];
if (!exists) {
return nil;
}
_fileURL = url;
_data = [NSData data];
_name = name;
_persistent = persistent;
_fileType = [self.class sdl_fileTypeFromFileExtension:url.pathExtension];
_overwrite = NO;
return self;
}
+ (instancetype)persistentFileAtFileURL:(NSURL *)url name:(NSString *)name {
return [[self alloc] initWithFileURL:url name:name persistent:YES];
}
+ (instancetype)fileAtFileURL:(NSURL *)url name:(NSString *)name {
return [[self alloc] initWithFileURL:url name:name persistent:NO];
}
- (instancetype)initWithData:(NSData *)data name:(NSString *)name fileExtension:(NSString *)extension persistent:(BOOL)persistent {
self = [super init];
if (!self) {
return nil;
}
if (data.length == 0) {
return nil;
}
_fileURL = nil;
_data = data;
_name = name;
_persistent = persistent;
_fileType = [self.class sdl_fileTypeFromFileExtension:extension];
_overwrite = NO;
return self;
}
+ (instancetype)persistentFileWithData:(NSData *)data name:(NSString *)name fileExtension:(NSString *)extension {
return [[self alloc] initWithData:data name:name fileExtension:extension persistent:YES];
}
+ (instancetype)fileWithData:(NSData *)data name:(NSString *)name fileExtension:(NSString *)extension {
return [[self alloc] initWithData:data name:name fileExtension:extension persistent:NO];
}
#pragma mark - Getters
- (NSData *)data {
if (_data.length == 0 && _fileURL != nil) {
return [NSData dataWithContentsOfURL:_fileURL];
}
return _data;
}
/**
Initalizes a socket from which to read data.
@discussion A new `NSInputStream` is created when requested instead of returning the already open `NSInputStream`. This is done because once a opened, a stream *cannot* be closed and reopened. If the same file is accessed multiple times (i.e. a non-persistant file is uploaded before and after a disconnect from Core during the same session) the file cannot be accessed after the first access because the stream is closed once the upload is completed. Apple `NSInputStream` doc: https://developer.apple.com/documentation/foundation/nsstream/1411963-open
@return A socket
*/
- (NSInputStream *)inputStream {
if (_fileURL) {
// Data in file
_inputStream = [[NSInputStream alloc] initWithURL:_fileURL];
} else if (_data.length != 0) {
// Data in memory
_inputStream = [[NSInputStream alloc] initWithData:_data];
}
return _inputStream;
}
/**
Gets the size of the data. The data may be stored on disk or it may already be in the application's memory.
@return The size of the data.
*/
- (unsigned long long)fileSize {
if (_fileURL) {
// Data in file
NSString *path = [_fileURL path];
return [[NSFileManager defaultManager] attributesOfItemAtPath:path error:nil].fileSize;
} else if (_data) {
// Data in memory
return _data.length;
}
return 0;
}
#pragma mark - File Type
+ (SDLFileType)sdl_fileTypeFromFileExtension:(NSString *)fileExtension {
if ([fileExtension caseInsensitiveCompare:@"bmp"] == NSOrderedSame) {
return SDLFileTypeBMP;
} else if (([fileExtension caseInsensitiveCompare:@"jpg"] == NSOrderedSame) ||
([fileExtension caseInsensitiveCompare:@"jpeg"] == NSOrderedSame)) {
return SDLFileTypeJPEG;
} else if ([fileExtension caseInsensitiveCompare:@"png"] == NSOrderedSame) {
return SDLFileTypePNG;
} else if ([fileExtension caseInsensitiveCompare:@"wav"] == NSOrderedSame) {
return SDLFileTypeWAV;
} else if ([fileExtension caseInsensitiveCompare:@"mp3"] == NSOrderedSame) {
return SDLFileTypeMP3;
} else if ([fileExtension caseInsensitiveCompare:@"aac"] == NSOrderedSame) {
return SDLFileTypeAAC;
} else if ([fileExtension caseInsensitiveCompare:@"json"] == NSOrderedSame) {
return SDLFileTypeJSON;
} else {
return SDLFileTypeBinary;
}
}
#pragma mark - NSCopying
- (id)copyWithZone:(nullable NSZone *)zone {
SDLFile *fileCopy = [[self.class allocWithZone:zone] init];
fileCopy.name = _name.copy;
fileCopy.fileURL = _fileURL.copy;
fileCopy.fileType = _fileType.copy;
fileCopy.persistent = _persistent;
fileCopy.isStaticIcon = _isStaticIcon;
if (_data.length != 0) {
fileCopy.data = _data.copy;
}
return fileCopy;
}
#pragma mark - NSObject overrides
- (NSString *)description {
return [NSString stringWithFormat:@"SDLFile: %@, isPersistent: %@, should overwrite: %@, is static icon: %@, file type: %@", self.name, (self.isPersistent ? @"YES" : @"NO"), (self.overwrite ? @"YES" : @"NO"), (self.isStaticIcon ? @"YES" : @"NO"), self.fileType];
}
- (NSUInteger)hash {
return self.name.hash ^ self.data.hash;
}
- (BOOL)isEqual:(id)object {
if (self == object) { return YES; }
if (![object isKindOfClass:[SDLFile class]]) { return NO; }
return [self isEqualToFile:(SDLFile *)object];
}
- (BOOL)isEqualToFile:(SDLFile *)file {
if (!file) { return NO; }
BOOL haveEqualNames = [self.name isEqualToString:file.name];
BOOL haveEqualFormats = [self.fileType isEqualToEnum:file.fileType];
BOOL haveEqualData = NO;
if (self.data.length == 0 && file.data.length == 0) {
haveEqualData = [self.fileURL isEqual:file.fileURL];
} else if (self.data.length > 0 && file.data.length > 0) {
haveEqualData = [self.data isEqualToData:file.data];
} else {
return NO;
}
return haveEqualNames && haveEqualData && haveEqualFormats;
}
@end
NS_ASSUME_NONNULL_END
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