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/**
* QSFileManager.m
*
* Copyright (c) 2010 - 2011, Quasidea Development, LLC
* For more information, please go to http://www.quasidea.com/
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/

#import "QSFileManager.h"
#include <sys/xattr.h>

static NSString * _strDocumentsPath = nil;
static NSString * _strOfflineContentPath = nil;

@implementation QSFileManager

+ (NSString *)documentsFilePathForFile:(NSString *)strFile {
if (_strDocumentsPath == nil) {
NSArray * objPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, true);
_strDocumentsPath = [objPaths objectAtIndex:0];
[_strDocumentsPath retain];
}

return [_strDocumentsPath stringByAppendingPathComponent:strFile];
}


+ (NSString *)offlineContentFilePathForFile:(NSString *)strFile {
if (_strOfflineContentPath == nil) {
NSArray * objPaths = NSSearchPathForDirectoriesInDomains(NSLibraryDirectory, NSUserDomainMask, true);
_strOfflineContentPath = [[objPaths objectAtIndex:0] stringByAppendingPathComponent:@"Offline Content"];
[_strOfflineContentPath retain];
}

return [_strOfflineContentPath stringByAppendingPathComponent:strFile];
}

+ (bool)writeFile:(NSString *)strFilePath WithData:(NSData *)objData {
return [[NSFileManager defaultManager] createFileAtPath:strFilePath contents:objData attributes:nil];
}

+ (NSData *)readFile:(NSString *)strFilePath {
return [[NSFileManager defaultManager] contentsAtPath:strFilePath];
}

+ (bool)writeDocumentsFile:(NSString *)strFileName WithData:(NSData *)objData {
return [QSFileManager writeFile:[QSFileManager documentsFilePathForFile:strFileName] WithData:objData];
}

+ (NSData *)readDocumentsFile:(NSString *)strFileName {
return [QSFileManager readFile:[QSFileManager documentsFilePathForFile:strFileName]];
}

+ (bool)writeOfflineContentFile:(NSString *)strFileName WithData:(NSData *)objData {
bool blnToReturn;
blnToReturn = [QSFileManager writeFile:[QSFileManager offlineContentFilePathForFile:strFileName] WithData:objData];

// Since we're dealing with Offline Content, we are required to set the "Do Not Back up" Extended Attribute
if (blnToReturn) {
blnToReturn = [QSFileManager markFileAsDoNotBackup:[QSFileManager offlineContentFilePathForFile:strFileName]];
}

return blnToReturn;
}

+ (bool)markFileAsDoNotBackup:(NSString *)strFileName {
const char * strFilePath = [strFileName fileSystemRepresentation];
const char * strAttributeName = "com.apple.MobileBackup";
u_int8_t attrValue = 1;

int result = setxattr(strFilePath, strAttributeName, &attrValue, sizeof(attrValue), 0, 0);
return (result == 0);
}

+ (NSData *)readOfflineContentFile:(NSString *)strFileName {
return [QSFileManager readFile:[QSFileManager offlineContentFilePathForFile:strFileName]];
}

+ (NSInteger)fileSize:(NSString *)strFilePath {
NSDictionary * dctFileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:strFilePath error:NULL];
return [dctFileAttributes fileSize];
}

@end
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