//
//  MTVideoDownTool.m
//  Hellomacau
//
//  Created by Simon on 2020/4/30.
//  Copyright © 2020 Simon. All rights reserved.
//

#import "MTVideoDownTool.h"

@implementation MTVideoDownTool

+ (void)downloadAudioWithUrl:(NSString *)url
           saveDirectoryPath:(NSString *)directoryPath
                    fileName:(NSString *)fileName
                      finish:(FinishBlock )finishBlock
                      failed:(Failed)failed
{
    
    NSArray* paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
    directoryPath = [paths objectAtIndex:0];
    
    NSString *mp3path = [NSString stringWithFormat:@"%@.mp3",fileName];
    NSString *file_path = [directoryPath stringByAppendingPathComponent:mp3path];
    NSFileManager *fm = [NSFileManager defaultManager];
    
    /// 判断文件是否已经存在
    if ([fm fileExistsAtPath:file_path]){
//        finishBlock(file_path);
        failed(1);
    }else{
        /// 不存在时
        NSURL *URL = [NSURL URLWithString:url];
        NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
        //AFN3.0+基于封住URLSession的句柄
        AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
        //请求
        NSURLRequest *request = [NSURLRequest requestWithURL:URL];
        //下载Task操作
        NSURLSessionDownloadTask *_downloadTask = [manager downloadTaskWithRequest:request progress:^(NSProgress * _Nonnull downloadProgress) {
            //进度
            NSString *ss = [NSString stringWithFormat:@"已下载：%@",downloadProgress.localizedDescription];
            ShowMessage(ss);
        } destination:^NSURL * _Nonnull(NSURL * _Nonnull targetPath, NSURLResponse * _Nonnull response) {
            
            NSString *cachesPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
            NSString *path = [cachesPath stringByAppendingPathComponent:response.suggestedFilename];
            return [NSURL fileURLWithPath:path];
            
        } completionHandler:^(NSURLResponse * _Nonnull response, NSURL * _Nullable filePath, NSError * _Nullable error) {
            // filePath就是你下载文件的位置，你可以解压，也可以直接拿来使用
            NSString *armFilePath = [filePath path];// 将NSURL转成NSString
            //重命名
            NSString *nNameFilePath = [MTVideoDownTool p_setupFileRename:armFilePath andFileName:fileName];
            
            finishBlock(nNameFilePath);
        }];
        [_downloadTask resume];
    }
}

/**
 对文件重命名

 @param filePath 旧路径
 @return 新路径
 */
+ (NSString *)p_setupFileRename:(NSString *)filePath andFileName:(NSString *)Name{
    
    NSString *lastPathComponent = [NSString new];
    //获取文件名： 视频.MP4
    lastPathComponent = [filePath lastPathComponent];
    //获取后缀：MP4
    NSString *pathExtension = [filePath pathExtension];
    //用传过来的路径创建新路径 首先去除文件名
    NSString *pathNew = [filePath stringByReplacingOccurrencesOfString:lastPathComponent withString:@""];
    //然后拼接新文件名：
    NSString *moveToPath = [NSString stringWithFormat:@"%@%@.%@",pathNew,Name,pathExtension];
    NSFileManager *fileManager = [NSFileManager defaultManager];
    //通过移动该文件对文件重命名
    BOOL isSuccess = [fileManager moveItemAtPath:filePath toPath:moveToPath error:nil];
    if (isSuccess) {
        NSLog(@"rename success");
    }else{
        NSLog(@"rename fail");
    }
    
    return moveToPath;
}
@end