ATZTemplateInstaller.m

// TemplateInstaller.m
//
// Copyright (c) 2013 Marin Usalj | supermar.in
//
// 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 "ATZTemplateInstaller.h"
#import "ATZTemplate.h"
#import "ATZGit.h"

@implementation ATZTemplateInstaller


#pragma mark - Abstract

- (void)downloadPackage:(ATZPackage *)package completion:(void(^)(NSString *, NSError *))completion {
    [ATZGit cloneRepository:package.remotePath toLocalPath:[self pathForDownloadedPackage:package]
                 completion:completion];
}

- (void)updatePackage:(ATZPackage *)package completion:(void(^)(NSString *, NSError *))completion {
    [ATZGit updateRepository:[self pathForDownloadedPackage:package] revision:package.revision
                  completion:completion];
}

- (void)installPackage:(ATZTemplate *)package completion:(void(^)(NSError *))completion {
    [self copyTemplatesToXcode:package completion:completion];
}


#pragma mark - Private

- (void)copyTemplatesToXcode:(ATZTemplate *)template completion:(void (^)(NSError *))completion {
    NSError *error = nil;
    [self createTemplateInstallDirectory:template error:&error];
    
    if (error) completion(error);
    
    for (NSString *templatePath in [self templateFilesForClonedTemplate:template]) {

        NSString *templateFileName = templatePath.pathComponents.lastObject;
        NSString *installPath = [[self pathForInstalledPackage:template] stringByAppendingPathComponent:templateFileName];
        
        [[NSFileManager sharedManager] copyItemAtPath:templatePath toPath:installPath error:&error];
    }
    
    completion(error);
}

- (BOOL)createTemplateInstallDirectory:(ATZTemplate *)template error:(NSError **)error {
    [[NSFileManager sharedManager] createDirectoryAtPath:[self pathForInstalledPackage:template]
                             withIntermediateDirectories:YES attributes:nil error:error];
    return error == nil;
}

- (NSArray *)templateFilesForClonedTemplate:(ATZTemplate *)template {
    @autoreleasepool {
        NSString *clonePath = [self pathForDownloadedPackage:template];
        NSMutableArray *foundTemplates = [NSMutableArray new];

        @try {
            NSDirectoryEnumerator *enumerator = [[NSFileManager sharedManager] enumeratorAtPath:clonePath];
            NSString *directoryEntry;
            
            while (directoryEntry = [enumerator nextObject]) {
                if ([directoryEntry hasSuffix:template.extension])
                    [foundTemplates addObject:[clonePath stringByAppendingPathComponent:directoryEntry]];
            }
        }
        @catch (NSException *exception) {
            NSLog(@"Exception occurred while loading template files from clone: %@", exception);
        }
        return foundTemplates;
    }
}

@end