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

#import "mixDownloadManager.h"
#import "mixDownloadCacheManager.h"
#import "mixDownloadSession.h"

@interface mixDownloadManager ()
@property(nonatomic,strong) mixDownloadSession *downloadSession;
@end

@implementation mixDownloadManager

+ (instancetype)shareManager {
    static mixDownloadManager *_instance;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _instance = [[self alloc] init];
    });
    return _instance;
}

- (NSString*)uid{
    if(!_uid || _uid.length == 0){
        return @"mixDownload";
    }
    
    return _uid;
}

- (NSMutableArray *)getAllOperation {
    NSMutableDictionary *allOperationDict = [mixDownloadCacheManager getDownloadList];
    //HLog(@"%@---%@", allOperationDict,allOperationDict.allKeys);
    NSMutableArray *allOperationArray = [NSMutableArray array];
    for (NSDictionary *dict in allOperationDict.allValues) {
        mixDownloadOperation *operation = [mixDownloadOperation mj_objectWithKeyValues:dict];
        [allOperationArray addObject:operation];
    }
    return allOperationArray;
}

#pragma mark - 外界交互
- (void)downloadWithURL:(NSURL *)url complete:(void(^)(NSDictionary *,NSError *))complete{
    [self downloadWithURL:url begin:nil progress:nil complete:complete];
}

- (void)downloadWithURL:(NSURL *)url begin:(void(^)(NSString *))begin progress:(void(^)(NSInteger,NSInteger))progress complete:(void(^)(NSDictionary *,NSError *))complete {
    
    if (![url isKindOfClass:NSURL.class]) {
        if ([url isKindOfClass:NSString.class]) {
            url = [NSURL URLWithString:(NSString *)url];
        }else {
            // 失败回调
            complete(nil,nil);
            return;
        }
    }
    // 开启异步 操作
    dispatch_async(dispatch_get_global_queue(0, 0), ^{
        // 本地查找
        NSDictionary *fileInfo = [mixDownloadCacheManager queryFileInfoWithUrl:url.absoluteString];
        
        // 本地存在直接返回
        if (fileInfo && [fileInfo[@"currentSize"] integerValue] == [fileInfo[@"totalSize"] integerValue]
            && [fileInfo[@"totalSize"] integerValue] != 0) {
            
           mixDownloadOperation *operation = [mixDownloadOperation mj_objectWithKeyValues:fileInfo];
           [[NSNotificationCenter defaultCenter] postNotificationName:mixDownloadTaskExeEnd object:nil userInfo:@{@"operation" : operation}];
            
            dispatch_async(dispatch_get_main_queue(), ^{
                !complete ? : complete(fileInfo,nil);
            });
            return;
        }
        
      
        // 交给downloader下载
        [self.downloadSession downloadWithURL:url begin:begin progress:progress complete:complete];
    });
    
}

#pragma mark - 队列中的任务进行操作
- (void)startDownLoadWithUrl:(NSString *)url {
    // 开始下载
    [self.downloadSession startDownLoadWithUrl:url];
}

- (void)supendDownloadWithUrl:(NSString *)url {
    // 暂停下载
    [self.downloadSession supendDownloadWithUrl:url];
}

- (void)cancelDownloadWithUrl:(NSString *)url {
    // 取消下载
    [self.downloadSession cancelDownloadWithUrl:url];
}

/** 暂停当前所有的下载任务 下载任务不会从列队中删除 */
- (void)suspendAllDownloadTask {
    [self.downloadSession suspendAllDownloads];
}

/** 开启当前列队中所有被暂停的下载任务 */
- (void)startAllDownloadTask {
    [self.downloadSession startAllDownloads];
}

/** 停止当前所有的下载任务 调用此方法会清空所有列队下载任务 */
- (void)stopAllDownloads {
    [self.downloadSession cancelAllDownloads];
    self.downloadSession = nil;
}

#pragma mark - lazy load
- (mixDownloadSession *)downloadSession {
    if (!_downloadSession) {
        _downloadSession = [[mixDownloadSession alloc] init];
        
    }
    return _downloadSession;
}


@end