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Recognise and handle HTTP response status codes on iOS as well #82

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Recognise and handle HTTP response status codes on iOS as well #82

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39 changes: 28 additions & 11 deletions ios/RNBackgroundDownloader.m
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Original file line number Diff line number Diff line change
Expand Up @@ -105,6 +105,25 @@ + (void)setCompletionHandlerWithIdentifier: (NSString *)identifier completionHan
}
}

- (NSError *)getServerError: (nonnull NSURLSessionDownloadTask *)downloadTask {
NSError *serverError;
NSInteger httpStatusCode = [((NSHTTPURLResponse *)downloadTask.response) statusCode];
if(httpStatusCode != 200) {
serverError = [NSError errorWithDomain:NSURLErrorDomain
code:httpStatusCode
userInfo:@{NSLocalizedDescriptionKey: [NSHTTPURLResponse localizedStringForStatusCode: httpStatusCode]}];
}
return serverError;
}

- (BOOL)saveDownloadedFile: (nonnull RNBGDTaskConfig *) taskConfig downloadURL:(nonnull NSURL *)location error:(NSError **)saveError {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSURL *destURL = [NSURL fileURLWithPath:taskConfig.destination];
[fileManager createDirectoryAtURL:[destURL URLByDeletingLastPathComponent] withIntermediateDirectories:YES attributes:nil error:nil];
[fileManager removeItemAtURL:destURL error:nil];

return [fileManager moveItemAtURL:location toURL:destURL error:saveError];
}

#pragma mark - JS exported methods
RCT_EXPORT_METHOD(download: (NSDictionary *) options) {
Expand Down Expand Up @@ -208,19 +227,17 @@ + (void)setCompletionHandlerWithIdentifier: (NSString *)identifier completionHan
#pragma mark - NSURLSessionDownloadDelegate methods
- (void)URLSession:(nonnull NSURLSession *)session downloadTask:(nonnull NSURLSessionDownloadTask *)downloadTask didFinishDownloadingToURL:(nonnull NSURL *)location {
@synchronized (sharedLock) {
RNBGDTaskConfig *taskCofig = taskToConfigMap[@(downloadTask.taskIdentifier)];
if (taskCofig != nil) {
NSFileManager *fileManager = [NSFileManager defaultManager];
NSURL *destURL = [NSURL fileURLWithPath:taskCofig.destination];
[fileManager createDirectoryAtURL:[destURL URLByDeletingLastPathComponent] withIntermediateDirectories:YES attributes:nil error:nil];
[fileManager removeItemAtURL:destURL error:nil];
NSError *moveError;
BOOL moved = [fileManager moveItemAtURL:location toURL:destURL error:&moveError];
RNBGDTaskConfig *taskConfig = taskToConfigMap[@(downloadTask.taskIdentifier)];
if (taskConfig != nil) {
NSError *error = [self getServerError:downloadTask];
if (error == nil) {
[self saveDownloadedFile:taskConfig downloadURL:location error:&error];
}
if (self.bridge) {
if (moved) {
[self sendEventWithName:@"downloadComplete" body:@{@"id": taskCofig.id}];
if (error == nil) {
[self sendEventWithName:@"downloadComplete" body:@{@"id": taskConfig.id}];
} else {
[self sendEventWithName:@"downloadFailed" body:@{@"id": taskCofig.id, @"error": [moveError localizedDescription]}];
[self sendEventWithName:@"downloadFailed" body:@{@"id": taskConfig.id, @"error": [error localizedDescription]}];
}
}
[self removeTaskFromMap:downloadTask];
Expand Down