115 lines
4.0 KiB
Objective-C
115 lines
4.0 KiB
Objective-C
#import "Downloader.h"
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@implementation DownloadParams
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@end
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@interface Downloader()
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@property (copy) DownloadParams* params;
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@property (retain) NSURLSession* session;
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@property (retain) NSURLSessionTask* task;
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@property (retain) NSNumber* statusCode;
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@property (retain) NSNumber* lastProgressValue;
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@property (retain) NSNumber* contentLength;
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@property (retain) NSNumber* bytesWritten;
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@property (retain) NSFileHandle* fileHandle;
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@end
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@implementation Downloader
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- (void)downloadFile:(DownloadParams*)params
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{
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_params = params;
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_bytesWritten = 0;
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NSURL* url = [NSURL URLWithString:_params.fromUrl];
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[[NSFileManager defaultManager] createFileAtPath:_params.toFile contents:nil attributes:nil];
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_fileHandle = [NSFileHandle fileHandleForWritingAtPath:_params.toFile];
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if (!_fileHandle) {
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NSError* error = [NSError errorWithDomain:@"Downloader" code:NSURLErrorFileDoesNotExist
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userInfo:@{NSLocalizedDescriptionKey: [NSString stringWithFormat: @"Failed to create target file at path: %@", _params.toFile]}];
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return _params.errorCallback(error);
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} else {
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[_fileHandle closeFile];
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}
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NSURLSessionConfiguration *config;
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if (_params.background) {
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NSString *uuid = [[NSUUID UUID] UUIDString];
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config = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:uuid];
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} else {
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config = [NSURLSessionConfiguration defaultSessionConfiguration];
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}
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config.HTTPAdditionalHeaders = _params.headers;
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_session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:nil];
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_task = [_session downloadTaskWithURL:url];
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[_task resume];
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}
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- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didWriteData:(int64_t)bytesWritten totalBytesWritten:(int64_t)totalBytesWritten totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite
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{
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NSHTTPURLResponse *httpResponse = (NSHTTPURLResponse *)downloadTask.response;
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if (!_statusCode) {
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_statusCode = [NSNumber numberWithLong:httpResponse.statusCode];
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_contentLength = [NSNumber numberWithLong:httpResponse.expectedContentLength];
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return _params.beginCallback(_statusCode, _contentLength, httpResponse.allHeaderFields);
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}
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if ([_statusCode isEqualToNumber:[NSNumber numberWithInt:200]]) {
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_bytesWritten = @(totalBytesWritten);
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if (_params.progressDivider <= 1) {
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return _params.progressCallback(_contentLength, _bytesWritten);
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} else {
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double doubleBytesWritten = (double)[_bytesWritten longValue];
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double doubleContentLength = (double)[_contentLength longValue];
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double doublePercents = doubleBytesWritten / doubleContentLength * 100;
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NSNumber* progress = [NSNumber numberWithUnsignedInt: floor(doublePercents)];
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if ([progress unsignedIntValue] % [_params.progressDivider integerValue] == 0) {
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if (([progress unsignedIntValue] != [_lastProgressValue unsignedIntValue]) || ([_bytesWritten unsignedIntegerValue] == [_contentLength longValue])) {
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NSLog(@"---Progress callback EMIT--- %zu", [progress unsignedIntValue]);
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_lastProgressValue = [NSNumber numberWithUnsignedInt:[progress unsignedIntValue]];
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return _params.progressCallback(_contentLength, _bytesWritten);
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}
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}
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}
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}
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}
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- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:(NSURL *)location
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{
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NSURL *destURL = [NSURL fileURLWithPath:_params.toFile];
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NSFileManager *fm = [NSFileManager defaultManager];
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NSError *error = nil;
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[fm removeItemAtURL:destURL error:nil]; // Remove file at destination path, if it exists
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[fm moveItemAtURL:location toURL:destURL error:&error];
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if (error) {
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NSLog(@"RNFS download: unable to move tempfile to destination. %@, %@", error, error.userInfo);
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}
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return _params.completeCallback(_statusCode, _bytesWritten);
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}
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- (void)URLSession:(NSURLSession *)session downloadTask:(NSURLSessionTask *)downloadTask didCompleteWithError:(NSError *)error
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{
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return _params.errorCallback(error);
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}
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- (void)stopDownload
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{
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[_task cancel];
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}
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@end
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