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#import "foundation_request.h"
#include "TargetConditionals.h"
#if TARGET_OS_IPHONE
#import <UIKit/UIKit.h>
#include <atomic>
#endif
#include <memory>
#include <string>
#include <functional>
#include <llmr/platform/platform.hpp>
#include <uv.h>
uv_once_t request_initialize = UV_ONCE_INIT;
dispatch_queue_t queue = nullptr;
NSURLSession *session = nullptr;
#if TARGET_OS_IPHONE
std::atomic<int> active_tasks;
#endif
void request_initialize_cb() {
NSString *queueName = [[[NSBundle mainBundle] bundleIdentifier] stringByAppendingString:@".parsing"];
queue = dispatch_queue_create([queueName UTF8String], DISPATCH_QUEUE_CONCURRENT);
NSURLSessionConfiguration *sessionConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
sessionConfig.timeoutIntervalForResource = 6;
sessionConfig.HTTPMaximumConnectionsPerHost = 8;
sessionConfig.requestCachePolicy = NSURLRequestUseProtocolCachePolicy;
session = [NSURLSession sessionWithConfiguration:sessionConfig];
#if TARGET_OS_IPHONE
active_tasks = 0;
#endif
}
namespace llmr {
class platform::Request {
public:
Request(NSURLSessionDataTask *task, const std::string &original_url)
: task(task), original_url(original_url) {
#if TARGET_OS_IPHONE
active_tasks++;
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:active_tasks];
#endif
}
#if TARGET_OS_IPHONE
~Request() {
active_tasks--;
[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:active_tasks];
}
#endif
NSURLSessionDataTask *task;
std::string original_url;
};
std::shared_ptr<platform::Request>
platform::request_http(const std::string &url, std::function<void(Response *)> background_function,
std::function<void()> foreground_callback) {
uv_once(&request_initialize, request_initialize_cb);
__block std::shared_ptr<Request> req;
NSURLSessionDataTask *task = [session
dataTaskWithURL:[NSURL URLWithString:@(url.c_str())]
completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) {
if ([error code] == NSURLErrorCancelled) {
// We intentionally cancelled this request.
// Make sure we clear the shared_ptr to resolve the circular reference. We're referencing
// this shared_ptr by value so that the object stays around until this completion handler is
// invoked.
req.reset();
return;
}
dispatch_async(queue, ^(){
Response res;
if (!error && [response isKindOfClass:[NSHTTPURLResponse class]]) {
res.code = [(NSHTTPURLResponse *)response statusCode];
res.body = {(const char *)[data bytes], [data length]};
} else {
res.code = -1;
res.error_message = [[error localizedDescription] UTF8String];
}
background_function(&res);
dispatch_async(dispatch_get_main_queue(), ^(void) {
// Make sure we clear the shared_ptr to resolve the circular reference. We're referencing
// this shared_ptr by value so that the object stays around until this completion handler is
// invoked.
req.reset();
foreground_callback();
});
});
}];
req = std::make_shared<Request>(task, url);
[task resume];
return req;
}
void platform::cancel_request_http(const std::shared_ptr<Request> &req) {
if (req) {
[req->task cancel];
}
}
}
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