WebMover.m

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/*
 Copyright (c) 2014 Lee Barney
 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 "WebMover.h"

@interface WebMover ()
+(NSString*)moveWebFiles:(NSArray*)movableFileTypes error:(NSError**)error;
+(NSString*)moveDirectoriesSearchingForIndexHTML:(BOOL)searchFlag error:(NSError**)error;
+(NSString*)searchForIndexHTMLFile:(NSMutableArray*)resources atIndex:(int)curIndex usingManager:(NSFileManager*)fileManager error:(NSError**)error;
@end

@implementation WebMover

+(NSString*)moveDirectoriesAndWebFilesOfType:(NSArray*)webFileTypes error:(NSError**)error{
    NSString *indexHTMLPath = nil;
    if (webFileTypes != nil) {
        NSError *moveError = nil;
        indexHTMLPath = [WebMover moveWebFiles:webFileTypes error:&moveError];
        if (moveError != nil) {
            *error = moveError;
            return nil;
        }
    }
    NSError *moveError = nil;
    NSString *foundIndexPath = [WebMover moveDirectoriesSearchingForIndexHTML:(indexHTMLPath == nil) error:&moveError];
    if (moveError != nil) {
        *error = moveError;
        return nil;
    }
    if (indexHTMLPath == nil) {
        indexHTMLPath = foundIndexPath;
    }
    return indexHTMLPath;
}


+(NSString*)moveWebFiles:(NSArray*)movableFileTypes error:(NSError**)error{
    
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSString *indexPath = nil;
    NSString *resourcesPath = [NSBundle mainBundle].resourcePath;
    NSString *tempPath = NSTemporaryDirectory();
    NSError *anError = nil;
    NSArray *resourcesList = [fileManager contentsOfDirectoryAtPath:resourcesPath error:&anError];
    if (anError != nil) {
        *error = anError;
        return nil;
    }
    for (NSString *resourceName in resourcesList) {
        BOOL isMovableType = NO;
        for (NSString *fileType in movableFileTypes) {
            if ([resourceName.lowercaseString hasSuffix:fileType]) {
                isMovableType = YES;
                break;
            }
        }
        if (isMovableType) {
            NSString *destinationPath = [tempPath stringByAppendingPathComponent:resourceName];
            if ([fileManager fileExistsAtPath:destinationPath]) {
                NSError *removeError = nil;
                [fileManager removeItemAtPath:destinationPath error:&removeError];
                if (removeError != nil) {
                    *error = removeError;
                    return nil;
                }
            }
            NSString *resourcePath = [resourcesPath stringByAppendingPathComponent:resourceName];
            NSError *copyError = nil;
            [fileManager copyItemAtPath:resourcePath toPath:destinationPath error:&copyError];
            if (copyError != nil) {
                *error = copyError;
                return nil;
            }
            if ([resourceName isEqualToString:@"index.html"]) {
                indexPath = destinationPath;
            }
        }
    }
    
    return indexPath;
}
+(NSString*)moveDirectoriesSearchingForIndexHTML:(BOOL)searchFlag error:(NSError**)error{
    
    NSFileManager *fileManager = [NSFileManager defaultManager];
    NSString *indexPath = nil;
    NSString *resourcesPath = [NSBundle mainBundle].resourcePath;
    NSString *tempPath = NSTemporaryDirectory();
    NSError *anError = nil;
    NSArray *resourcesList = [fileManager contentsOfDirectoryAtPath:resourcesPath error:&anError];
    if (anError != nil) {
        *error = anError;
        return nil;
    }
    for (NSString *resourceName in resourcesList) {
        BOOL isDirectoryType = NO;
        NSString *resourcePath = [resourcesPath stringByAppendingPathComponent:resourceName];
        NSString *destinationPath = [tempPath stringByAppendingPathComponent:resourceName];
        [fileManager fileExistsAtPath:resourcePath isDirectory:&isDirectoryType];
        if (isDirectoryType && ![resourceName hasSuffix:@".lproj"]
            && ![resourceName isEqualToString:@"Frameworks"]
            && ![resourceName isEqualToString:@"META-INF"]
            && ![resourceName isEqualToString:@"_CodeSignature"]) {
            
            if ([fileManager fileExistsAtPath:destinationPath]) {
                NSError *removeError = nil;
                [fileManager removeItemAtPath:destinationPath error:&removeError];
                if (removeError != nil) {
                    *error = removeError;
                    return nil;
                }
            }
            NSError *copyError = nil;
            [fileManager copyItemAtPath:resourcePath toPath:destinationPath error:&copyError];
            if (copyError != nil) {
                *error = copyError;
                return nil;
            }
            else if(searchFlag){
                NSMutableArray *resources = [NSMutableArray array];;
                NSError *contentsError = nil;
                NSArray *childResourcesList = [fileManager contentsOfDirectoryAtPath:destinationPath error:&contentsError];
                if (contentsError != nil) {
                    continue;
                }
                for (NSString *childResource in childResourcesList) {
                    [resources addObject:@[destinationPath,childResource]];
                }
                NSError *searchError = nil;
                NSString *indexHTMLFilePath = [WebMover searchForIndexHTMLFile:resources atIndex:0 usingManager:fileManager error:&searchError];
                if (indexHTMLFilePath != nil) {
                    indexPath = indexHTMLFilePath;
                    searchFlag = NO;
                }
            }
        }
    }
    
    return indexPath;
}


+(NSString*)searchForIndexHTMLFile:(NSMutableArray*)resources atIndex:(int)curIndex usingManager:(NSFileManager*)fileManager error:(NSError**)error{
    NSString *resource = resources[curIndex][1];
    NSString *directoryPath = resources[curIndex][0];
    NSString *resourcePath = [directoryPath stringByAppendingPathComponent:resource];
    NSError *anError = nil;
    if ([resource.lowercaseString isEqualToString:@"index.html"]) {
        return resourcePath;
    }
    else{
        BOOL isDirectoryType = NO;
        [fileManager fileExistsAtPath:resourcePath isDirectory:&isDirectoryType];
        if (isDirectoryType) {
            NSArray *resourceList = [fileManager contentsOfDirectoryAtPath:resourcePath error:&anError];
            if (anError != nil) {
                *error = anError;
                return nil;
            }
            for (NSString *childResource in resourceList) {
                [resources addObject:@[resourcePath, childResource]];
            }
        }
    }
    return [WebMover searchForIndexHTMLFile:resources atIndex:curIndex + 1 usingManager:fileManager error:error];
}
@end