//
//  backupsFileManager.m
//  隐私保护
//
//  Created by xd h on 2024/1/3.
//

#import "backupsFileManager.h"
#import "cachesFileManager.h"
#import "connectDeviceManager.h"
#import "AFNetworkReachabilityManager.h"

@interface backupsFileManager ()
/**检测任务10s后 无反馈重新开始 */
@property (nonatomic, assign) NSInteger  taskRenewTime; //
@property (nonatomic,strong)photosBackupsTaskModel *lastModel;//最后一次备份的数据
@end

@implementation backupsFileManager
static backupsFileManager * cur_backupsFileShareInstance = nil;
+(backupsFileManager *)shareInstance;
{
    static dispatch_once_t onceToken;
    
    dispatch_once(&onceToken, ^{
        cur_backupsFileShareInstance = [[backupsFileManager alloc] init];
        
    });
    
    return cur_backupsFileShareInstance;
}

- (id)init
{
    self = [super init];
    
    if (self) {
        //[self initManager];
    }
    
    return self;
}

- (void)AutohandlePhotosBackupsFun
{
    NSString *curSdnId = ksharedAppDelegate.DeviceThirdIdMod.data.sdnId;
    if(!_sdnId || ![curSdnId isEqualToString:_sdnId])
    {//没有备份过 或者更换设备了
        [self handlePhotosBackupsFun];
    }
    else{
        [self checkReBackupsFileFun];
    }
    
}

- (void)handlePhotosBackupsFun
{
    BOOL haveOpenBackups = [HWDataManager getBoolWithKey:stringKeyAddSn(Const_photo_backups_state)];
    if(!haveOpenBackups){
        return;
    }
    
    if(ksharedAppDelegate.DisabledFileTransferType){
        return;
    }
    
    //相册权限
    if (![[TZImageManager manager] authorizationStatusAuthorized]){
        [HWDataManager setBoolWithKey:Const_photo_backups_state value:NO];
        return;
    }
    
    NSString *curSdnId = ksharedAppDelegate.DeviceThirdIdMod.data.sdnId;
    _sdnId = curSdnId;
    
    [photosBackupsTaskModel bg_findAsync:backups_photos_tableName limit:0 orderBy:nil desc:YES complete:^(NSArray * _Nullable array) {
        if(!array || array.count == 0){
            [self getAllAlbumsFun];
            return;
        }
        
        if(array.count >1){
            [self keepDatabaseOneDataFun];
        }
        
        self->_lastModel = array.firstObject;
        
        HLog(@"1 bg_id:%@",self->_lastModel.bg_id);
        
        if(self->_lastModel.isBackupsSuspendType == backupsSuspendByUser){
            return;
        }
        
        if(self->_lastModel.curBackupsState == backupsStateFail
           ||self->_lastModel.curBackupsState == backupsStateDone){//上次备份完成
            [self getAllAlbumsFun];
        }
        else{//继续上次的备份任务
            [self handelBackupsModelFun:self->_lastModel];
        }
    }];
    
}

- (void)keepDatabaseOneDataFun
{
    [photosBackupsTaskModel bg_deleteFirstObject:backups_photos_tableName];
    //[photosBackupsTaskModel bg_findAsync:backups_photos_tableName
}

//备份开始查询相册
- (void)getAllAlbumsFun
{
    //
    KWeakSelf
    [[TZImageManager manager] getAllAlbums:YES allowPickingImage:YES needFetchAssets:NO completion:^(NSArray<TZAlbumModel *> *models) {
        
        if(models.count >= 1){
            TZAlbumModel *curAlbumModel= models.firstObject;
            
            photosBackupsTaskModel * taskModel = [photosBackupsTaskModel new];
            //taskModel.count = curAlbumModel.count;
            //taskModel.result = curAlbumModel.result;
            
            taskModel.failCount = 0;
            taskModel.didBackupsCount = 0;
            taskModel.bg_tableName = backups_photos_tableName;
            
            //备份路径
            NSString * backupsDefaultPath = [HWDataManager getStringWithKey:stringKeyAddSn(Const_photo_backups_default_path)];
            
            if(!backupsDefaultPath || backupsDefaultPath.length == 0){
                backupsDefaultPath = Const_default_backups_path;
                [HWDataManager setStringWithKey:stringKeyAddSn(Const_photo_backups_default_path) value:backupsDefaultPath];
            }
            
            NSString *lastStr= [backupsDefaultPath substringFromIndex:backupsDefaultPath.length-1];
            if(![lastStr isEqualToString:@"/"]){
                backupsDefaultPath = [[NSString alloc] initWithFormat:@"%@/",backupsDefaultPath];
            }
            
            taskModel.backupsPath = backupsDefaultPath;
            
            NSMutableString *allLocalIdentifier= [NSMutableString new];
            
            for (PHAsset *asset in curAlbumModel.result) {
                if (asset.localIdentifier) {
                    if(allLocalIdentifier.length >0){
                        [allLocalIdentifier appendString:@"&"];
                    }
                    [allLocalIdentifier appendString:asset.localIdentifier];
                }
            }
            
            taskModel.totalLocalIdentifier = allLocalIdentifier;
            
            if(self->_lastModel 
               && self->_lastModel.totalLocalIdentifier
               && (self->_lastModel.backupsPath && [self->_lastModel.backupsPath isEqualToString:taskModel.backupsPath])){//相册备份排重
                taskModel.curTaskLocalIdentifier = [weakSelf AlbumBackupsHandleNew:taskModel];
                
                taskModel.PreDidBackupsCount = self->_lastModel.PreDidBackupsCount + self->_lastModel.didBackupsCount;
            }
            else{
                taskModel.curTaskLocalIdentifier = allLocalIdentifier;
            }
            
            taskModel.count = [taskModel.curTaskLocalIdentifier componentsSeparatedByString:@"&"].count;
            
            HLog(@"2 bg_id:%@",taskModel.bg_id);
            
            [taskModel bg_saveAsync:^(BOOL isSuccess) {
                if(!isSuccess){
                    HLog(@"\n\nError!!!\n\n");
                }
                else{
                    //[self handelBackupsModelFun:taskModel];
                    [self handlePhotosBackupsFun];
                }
            }];
        }
    }];
}

- (NSString*)AlbumBackupsHandleNew:(photosBackupsTaskModel * )taskModel
{
    NSArray* curLocalIdentifierArr = [taskModel.totalLocalIdentifier componentsSeparatedByString:@"&"];
    NSArray* preLocalIdentifierArr = [_lastModel.totalLocalIdentifier componentsSeparatedByString:@"&"];
    
    NSMutableArray *allArr = [NSMutableArray arrayWithArray:curLocalIdentifierArr];
    
    for (NSString*localIdentifier in preLocalIdentifierArr) {
        for (NSString* newlocalIdentifier in allArr) {
            if([localIdentifier isEqualToString:newlocalIdentifier]){
                [allArr removeObject:newlocalIdentifier];
                break;
            }
        }
    }
    
    NSMutableString *allLocalIdentifier= [NSMutableString new];
    for (NSString* newlocalIdentifier in allArr) {
        if(allLocalIdentifier.length >0){
            [allLocalIdentifier appendString:@"&"];
        }
        [allLocalIdentifier appendString:newlocalIdentifier];
    }
    
    return allLocalIdentifier;
}

- (void)handelBackupsModelFun:(photosBackupsTaskModel*)backupsTaskModel
{
    _curPhotosBackupsTaskMod = backupsTaskModel;
    _curPhotosBackupsTaskMod.isBackupsSuspendType = backupsSuspendNone;
    _curPhotosBackupsTaskMod.curBackupsState = backupsStateUploading;
    
    _curPhotosBackupsTaskMod.LocalIdentifierArr = [backupsTaskModel.curTaskLocalIdentifier componentsSeparatedByString:@"&"];
    
    if(_curPhotosBackupsTaskMod.LocalIdentifierArr.count == 0){
        
        _curPhotosBackupsTaskMod.didBackupsCount = 0;
        _curPhotosBackupsTaskMod.curBackupsState = backupsStateDone;
        [self RefreshDatabaseFun];
        [self changeBackupsFileStateFun];
        return;
    }
    
    if(_curPhotosBackupsTaskMod.LocalIdentifierArr.count
       <= (_curPhotosBackupsTaskMod.didBackupsCount + _curPhotosBackupsTaskMod.failCount))
    {
        _curPhotosBackupsTaskMod.curBackupsState = backupsStateDone;
        [self RefreshDatabaseFun];
        [self changeBackupsFileStateFun];
        return;
    }
    
    [self beginBackupsFileFun];
}

- (void)beginBackupsFileFun
{
    BOOL isCanUseCellular = [HWDataManager getBoolWithKey:stringKeyAddSn(Const_file_Transfe_canUse_Cellular_all)];
    if(!isCanUseCellular){//不允许流量上传
        //
        if([AFNetworkReachabilityManager sharedManager].networkReachabilityStatus == AFNetworkReachabilityStatusReachableViaWWAN){
            return;
        }
        
    }
    
    self.taskRenewTime = [iTools getNowTimeStamp];
    
    NSInteger index = _curPhotosBackupsTaskMod.didBackupsCount + _curPhotosBackupsTaskMod.failCount;
    
    if(!_curPhotosBackupsTaskMod.LocalIdentifierArr){
        _curPhotosBackupsTaskMod.LocalIdentifierArr = [_curPhotosBackupsTaskMod.curTaskLocalIdentifier componentsSeparatedByString:@"&"];
    }
    
    if(index >= _curPhotosBackupsTaskMod.LocalIdentifierArr.count){
        _curPhotosBackupsTaskMod.curBackupsState = backupsStateDone;
        [self RefreshDatabaseFun];
        [self changeBackupsFileStateFun];
        _curPhotosBackupsTaskMod = nil;
        return;
    }
    
    NSString *curLocalIdentifier = _curPhotosBackupsTaskMod.LocalIdentifierArr[index];
    
    if(!curLocalIdentifier || curLocalIdentifier.length == 0)
    {
        [self getDataWrongToChangeFailFun];
        return;
    }
        
    _curPhotosBackupsTaskMod.didUploadBytes = 0;
    _curPhotosBackupsTaskMod.preDidUploadBytes = 0;
    _curPhotosBackupsTaskMod.totalBytes = 0;
    
    PHFetchResult *fetchResult = [PHAsset fetchAssetsWithLocalIdentifiers:@[curLocalIdentifier] options:nil];
    PHAsset *curAsset = fetchResult.firstObject;
    
    NSString *fileName = [curAsset valueForKey:@"filename"];;
   
    if(!fileName){
        [self getDataWrongToChangeFailFun];
        return;
    }
    _curPhotosBackupsTaskMod.filename = fileName;
    
    KWeakSelf
    if(curAsset.mediaType == PHAssetMediaTypeImage){
        _curPhotosBackupsTaskMod.curUploadFileType = uploadFileTypeImage;
        
        PHImageRequestOptions *options = [[PHImageRequestOptions alloc] init];
        options.networkAccessAllowed = YES; // Allow downloading from iCloud
        options.version = PHImageRequestOptionsVersionCurrent;
        options.deliveryMode = PHImageRequestOptionsDeliveryModeHighQualityFormat;
        
        [[PHImageManager defaultManager] requestImageDataForAsset:curAsset options:options resultHandler:^(NSData * _Nullable imageData, NSString * _Nullable dataUTI, UIImageOrientation orientation, NSDictionary * _Nullable info) {
                // 直接得到最终的 NSData 数据
                if (imageData) {
                    [weakSelf  afterGetImageDataFun:imageData];
                }
                else{
                    [weakSelf getDataWrongToChangeFailFun];
                }
        }];
    }
    else{
        _curPhotosBackupsTaskMod.curUploadFileType = uploadFileTypeVideo;
        
        //判断文件是否在app内
       BOOL didSaveFile = [cachesFileManager  checkFileIsSaveState:_curPhotosBackupsTaskMod.filename withType:uploadFileTypeVideo];
        
        if(didSaveFile){
            [self afterGetVideoDataFun];
            return;
        }
        
        //真正的视频数据
        PHVideoRequestOptions *options = [[PHVideoRequestOptions alloc] init];
        options.version = PHVideoRequestOptionsVersionOriginal;
        options.networkAccessAllowed = YES; // Allow downloading from iCloud
        [[PHImageManager defaultManager] requestAVAssetForVideo:curAsset options:options resultHandler:^(AVAsset *asset, AVAudioMix *audioMix, NSDictionary *info) {
            if ([asset isKindOfClass:[AVURLAsset class]]) {
                
                AVURLAsset* urlAsset = (AVURLAsset*)asset;
                
                BOOL isSuc = [cachesFileManager copyVideoItemAtPath:[urlAsset.URL path] fileName:self->_curPhotosBackupsTaskMod.filename error:nil];
        
                if (isSuc) {
                    [weakSelf  afterGetVideoDataFun];
                }
                else{
                    [weakSelf getDataWrongToChangeFailFun];
                }
            }
            else{
                [weakSelf getDataWrongToChangeFailFun];
            }
        }];
    }
    
}

- (void)getDataWrongToChangeFailFun
{
    [self deleteVideoFun];
    _curPhotosBackupsTaskMod.failCount += 1;
    
    [self RefreshDatabaseFun];
    
    if(_curPhotosBackupsTaskMod.curBackupsState == backupsStateSuspend){
        return;
    }
    
    [self beginBackupsFileFun];
}

- (void)changeBackupsFileStateToFailWith:(NSString*)errorStr
{
    [self deleteVideoFun];
    _curPhotosBackupsTaskMod.curBackupsState = backupsStateFail;
    _curPhotosBackupsTaskMod.backupsTipMsg = errorStr;
    [self RefreshDatabaseFun];
    [self changeBackupsFileStateFun];
}

- (void)RefreshDatabaseFun
{
    HLog(@"3 bg_id:%@",_curPhotosBackupsTaskMod.bg_id);
    [_curPhotosBackupsTaskMod bg_saveOrUpdateAsync:^(BOOL isSuccess) {
                if(isSuccess){
                }
    }];
}

- (void)afterGetImageDataFun:(NSData*)imageData
{
    _curPhotosBackupsTaskMod.imageData = imageData;
    _curPhotosBackupsTaskMod.didUploadBytes = 0;
    _curPhotosBackupsTaskMod.totalBytes = [imageData length];
    [[webSocketManager shareInstance] beginGotoBackupsFileFunBy:_curPhotosBackupsTaskMod];
    [self RefreshDatabaseFun];
    [self changeBackupsFileStateFun];
}

- (void)deleteVideoFun
{
    if(_curPhotosBackupsTaskMod.curUploadFileType == uploadFileTypeVideo){
        [cachesFileManager removeItemAtPath:_curPhotosBackupsTaskMod.filename type:uploadFileTypeVideo error:nil];
    }
}

- (void)afterGetVideoDataFun
{
    NSString *filePath = [cachesFileManager getFilePathWithName:_curPhotosBackupsTaskMod.filename type:uploadFileTypeVideo]; // 文件路径
    
    NSFileManager *manager0 = [NSFileManager defaultManager];
    if([manager0 fileExistsAtPath:filePath]) {
        NSFileHandle *fileHandle = [NSFileHandle fileHandleForReadingAtPath:filePath]; // 创建文件句柄
        
        if (fileHandle) {
            long long endOfFile = [fileHandle seekToEndOfFile];
            
            _curPhotosBackupsTaskMod.didUploadBytes = 0;
            _curPhotosBackupsTaskMod.totalBytes = endOfFile;
            [fileHandle closeFile];
        }
        
    }
    
    
    [[webSocketManager shareInstance] beginGotoBackupsFileFunBy:_curPhotosBackupsTaskMod];
    [self RefreshDatabaseFun];
    [self changeBackupsFileStateFun];
}

- (void)backupsFileDoneFun
{
    [self deleteVideoFun];
    _curPhotosBackupsTaskMod.didBackupsCount += 1;
    
//    if(!_curPhotosBackupsTaskMod.didBackupsOneFileType)
//    {
//        _curPhotosBackupsTaskMod.curTaskBackupsCount += 1; 
//    }
    
    [self RefreshDatabaseFun];
    [self changeBackupsFileStateFun];
    
    if(_curPhotosBackupsTaskMod.curBackupsState == backupsStateSuspend){
        return;
    }
    
    //延时 进度条视觉效果
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [self beginBackupsFileFun];
    });
    
    
}

//修改文件上传的状态
- (void)changeBackupsFileStateFun
{
    self.taskRenewTime = [iTools getNowTimeStamp];
    
    if(!_curPhotosBackupsTaskMod){
        return;
    }
    [[NSNotificationCenter defaultCenter] postNotificationName:backupsFileRefreshNotification object:_curPhotosBackupsTaskMod];
}

- (void)suspendBackupsFileFun
{
    if(!_curPhotosBackupsTaskMod){
        return;
    }
    
    _curPhotosBackupsTaskMod.curBackupsState = backupsStateSuspend;
    _curPhotosBackupsTaskMod.backupsTipMsg = NSLocalizedString(@"File_backups_Record_tip_Suspend",nil);
    
    [_curPhotosBackupsTaskMod bg_saveOrUpdateAsync:^(BOOL isSuccess) {
        if(isSuccess){
            [self changeBackupsFileStateFun];
        }
    }];
    
}

//文件重新备份
- (void)reBackupsFileFunBy:(photosBackupsTaskModel*)model
{
    model.isBackupsSuspendType = backupsSuspendNone;
    model.curBackupsState = backupsStateUploading;
    _curPhotosBackupsTaskMod = model;
        
    [self RefreshDatabaseFun];
    [self changeBackupsFileStateFun];
    
    [self beginBackupsFileFun];
    
//    [_curPhotosBackupsTaskMod bg_saveOrUpdateAsync:^(BOOL isSuccess) {
//        if(isSuccess){
//            [self beginBackupsFileFun];
//        }
//    }];
    
}

//文件重新备份
- (void)reBackupsFileFun
{
    [self handlePhotosBackupsFun];
    
    //if(_curPhotosBackupsTaskMod.curBackupsState != backupsStateUploading)
    if(self->_lastModel.curBackupsState != backupsStateUploading){
        if(self->_lastModel.curBackupsState == backupsStateFail
           ||self->_lastModel.curBackupsState == backupsStateDone){//上次备份完成
            [self getAllAlbumsFun];
        }
        else{//继续上次的备份任务
            [self handelBackupsModelFun:self->_lastModel];
        }
    }
}

//检查是否需要重新备份
- (void)checkReBackupsFileFun
{
    if(!_curPhotosBackupsTaskMod){
        return;
    }
    
    if(_curPhotosBackupsTaskMod.curBackupsState != backupsStateUploading){
        return;
    }
    
    NSInteger curTime = [iTools getNowTimeStamp];
    
    if(self.taskRenewTime == 0){
        return;
    }
    
    if(curTime - self.taskRenewTime < 10){
        return;
    }
    
    [self beginBackupsFileFun];
}

//检查是否在备份中
- (BOOL)checkBackupsingFun{
    if(!_curPhotosBackupsTaskMod){
        return NO;
    }
    
    if(_curPhotosBackupsTaskMod.curBackupsState == backupsStateSuspend){
        return NO;
    }
    
    return YES;
}
@end