//
//  mixDownloadSession.m
//  双子星云手机
//
//  Created by xd h on 2024/6/27.
//

#import "mixDownloadSession.h"
#import "mixDownloadQueue.h"
#import "mixDownloadOperation.h"

@interface mixDownloadSession () <NSURLSessionDataDelegate>

/** session 可以支持多个任务下载，创建一次就可以 */
@property (nonatomic,strong) NSURLSession *session;

/** 下载列队管理 专门负责接收到数据时分配给不同operation */
@property (nonatomic,strong) mixDownloadQueue *queue;

@end

@implementation mixDownloadSession

// 添加任务
- (void)downloadWithURL:(NSURL *)url begin:(void(^)(NSString *))begin progress:(void(^)(NSInteger,NSInteger))progress complete:(void(^)(NSDictionary *,NSError *))complet {
    // 交给列队管理
    [self.queue addDownloadWithSession:self.session URL:url begin:begin progress:progress complete:complet];
    
}

- (void)startAllDownloads {
    [self.queue startAllTasksWithSession:self.session];
}

#pragma mark - <NSURLSessionDataDelegate>

// ssl 服务 证书信任
- (void)URLSession:(NSURLSession *)session
didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
 completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * _Nullable credential))completionHandler{
    if(![challenge.protectionSpace.authenticationMethod isEqualToString:@"NSURLAuthenticationMethodServerTrust"]) {
        return;
    }
    
    // 信任该插件
    NSURLCredential *credential = [[NSURLCredential alloc] initWithTrust:challenge.protectionSpace.serverTrust];
    // 第一个参数 告诉系统如何处置
    completionHandler(NSURLSessionAuthChallengeUseCredential,credential);
}

//当请求协议是https的时候回调用该方法
//Challenge 挑战 质询(受保护空间)
//NSURLAuthenticationMethodServerTrust 服务器信任证书
- (void)URLSession:(NSURLSession *)session
              task:(NSURLSessionTask *)task
didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
 completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential * __nullable credential))completionHandler {
    
    if(![challenge.protectionSpace.authenticationMethod isEqualToString:@"NSURLAuthenticationMethodServerTrust"]) {
        return;
    }
    
    // 信任该插件
    NSURLCredential *credential = [[NSURLCredential alloc] initWithTrust:challenge.protectionSpace.serverTrust];
    // 第一个参数 告诉系统如何处置
    completionHandler(NSURLSessionAuthChallengeUseCredential,credential);
    
}


// 接受到响应调用
- (void)URLSession:(NSURLSession *)session
          dataTask:(NSURLSessionDataTask *)dataTask
didReceiveResponse:(NSURLResponse *)response
 completionHandler:(void (^)(NSURLSessionResponseDisposition disposition))completionHandler {
    
    // 将响应交给列队处理
    [self.queue dataTask:dataTask didReceiveResponse:response];
    
    // 允许下载
    completionHandler(NSURLSessionResponseAllow);
}

// 接受到数据碎片 的时候调用，调用多次
- (void)URLSession:(NSURLSession *)session
          dataTask:(NSURLSessionDataTask *)dataTask
    didReceiveData:(NSData *)data {
    // 接收到session 下载碎片交个列队管理
    [self.queue dataTask:dataTask didReceiveData:data];
}

// <NSURLSessionDataDelegate> 完成下载
- (void)URLSession:(NSURLSession *)session
              task:(NSURLSessionTask *)task
didCompleteWithError:(nullable NSError *)error {
    [self.queue task:task didCompleteWithError:error];
}

- (void)URLSession:(NSURLSession *)session
              task:(NSURLSessionTask *)task
 needNewBodyStream:(void (^)(NSInputStream * _Nullable bodyStream))completionHandler {
    
}

- (void)URLSession:(NSURLSession *)session
              task:(NSURLSessionTask *)task
   didSendBodyData:(int64_t)bytesSent
    totalBytesSent:(int64_t)totalBytesSent
totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend {
    
}

#pragma mark - lazy load
- (NSURLSession *)session {
    if (!_session) {
        NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
        // 设置请求超时
        config.timeoutIntervalForRequest = -1;
//        config.networkServiceType = NSURLNetworkServiceTypeVideo;
        config.timeoutIntervalForResource = -1;
//        config.TLSMaximumSupportedProtocol = kSSLProtocolAll;
        
        _session = [NSURLSession sessionWithConfiguration:config delegate:self delegateQueue:[NSOperationQueue currentQueue]];
    }
    
    return _session;
}

- (mixDownloadQueue *)queue {
    if (!_queue) {
        _queue = [[mixDownloadQueue alloc] init];
        _queue.session = self.session;
    }
    return _queue;
}

@end