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SyncedDocumentsController.m
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SyncedDocumentsController.m
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//
// DocumentsController.m
// Documents
//
// Created by Jesse Grosjean on 4/22/09.
// Copyright 2009 Hog Bay Software. All rights reserved.
//
#import "SyncedDocumentsController.h"
#import "SyncedDocument.h"
#import "HTTPClient.h"
#import "NSString+SBJSON.h"
#import "NSObject+SBJSON.h"
@interface SyncedDocumentsController (DocumentsPrivate)
- (void)queueClient:(HTTPClient *)aClient;
- (void)beginActiveClient:(HTTPClient *)aClient;
- (void)endActiveClient:(HTTPClient *)aClient;
- (HTTPClient *)GETServerDocuments;
@end
@implementation SyncedDocumentsController
+ (id)sharedInstance {
static SyncedDocumentsController *sharedInstance = nil;
if (!sharedInstance) {
sharedInstance = [[SyncedDocumentsController alloc] init];
}
return sharedInstance;
}
+ (void)initialize {
[[NSUserDefaults standardUserDefaults] registerDefaults:[NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithInteger:52332], DocumentSharingPort,
[NSString stringWithFormat:NSLocalizedString(@"%@ Documents", nil), [[NSProcessInfo processInfo] processName]], DocumentSharingServiceName,
[NSNumber numberWithBool:YES], DisableAutoLockWhenSharingDocuments,
@"change@settings.com", DocumentsDefaultEmail,
nil]];
}
#pragma mark Init
- (id)init {
if (self = [super init]) {
service = [[[NSBundle mainBundle] objectForInfoDictionaryKey:@"SyncedDocumentsService"] retain];
serviceLabel = [[[NSBundle mainBundle] objectForInfoDictionaryKey:@"SyncedDocumentsLabel"] retain];
serviceRootURLString = [[[NSBundle mainBundle] objectForInfoDictionaryKey:@"SyncedDocumentsURL"] retain];
activeClients = [[NSMutableArray alloc] init];
queuedClients = [[NSMutableArray alloc] init];
conflicts = [[NSMutableString alloc] init];
}
return self;
}
- (void)dealloc {
//[self stopDocumentSharing];
[service release];
[serviceLabel release];
[serviceRootURLString release];
[servicePassword release];
[activeClients release];
[queuedClients release];
[conflicts release];
[documentDatabaseDirectory release];
[managedObjectContext release];
[managedObjectModel release];
[persistentStoreCoordinator release];
[super dealloc];
}
@synthesize service;
@synthesize serviceLabel;
@synthesize serviceRootURLString;
- (NSString *)serviceUsername {
return [[NSUserDefaults standardUserDefaults] stringForKey:@"SyncedDocumentsUsernameKey"];
}
- (void)setServiceUsername:(NSString *)aUsername {
if (aUsername) {
[[NSUserDefaults standardUserDefaults] setObject:aUsername forKey:@"SyncedDocumentsUsernameKey"];
} else {
[[NSUserDefaults standardUserDefaults] removeObjectForKey:@"SyncedDocumentsUsernameKey"];
}
}
@synthesize servicePassword;
@synthesize documentDatabaseDirectory;
- (NSString *)documentDatabaseDirectory {
if (!documentDatabaseDirectory) {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *basePath = ([paths count] > 0) ? [paths objectAtIndex:0] : nil;
documentDatabaseDirectory = [basePath retain];
}
return documentDatabaseDirectory;
}
- (NSManagedObjectContext *)managedObjectContext {
if (managedObjectContext != nil) return managedObjectContext;
NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator];
if (coordinator != nil) {
managedObjectContext = [[NSManagedObjectContext alloc] init];
[managedObjectContext setPersistentStoreCoordinator:coordinator];
}
return managedObjectContext;
}
- (NSManagedObjectModel *)managedObjectModel {
if (managedObjectModel != nil) return managedObjectModel;
managedObjectModel = [[NSManagedObjectModel mergedModelFromBundles:[NSArray arrayWithObject:[NSBundle bundleForClass:[self class]]]] retain];
return managedObjectModel;
}
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator {
if (persistentStoreCoordinator != nil) return persistentStoreCoordinator;
NSError *error;
NSURL *storeUrl = [NSURL fileURLWithPath:[[self documentDatabaseDirectory] stringByAppendingPathComponent:@".syncedDocuments.coredata"]];
//[[NSFileManager defaultManager] removeItemAtPath:[storeUrl path] error:nil];
persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:nil error:&error]) {
return nil;
}
return persistentStoreCoordinator;
}
@synthesize syncDelegate;
#pragma mark Actions
- (NSArray *)documents:(NSError **)error {
NSFetchRequest *fetchRequest = [[[NSFetchRequest alloc] init] autorelease];
NSEntityDescription *entity = [NSEntityDescription entityForName:@"SyncedDocument" inManagedObjectContext:self.managedObjectContext];
[fetchRequest setEntity:entity];
return [self.managedObjectContext executeFetchRequest:fetchRequest error:error];
}
- (SyncedDocument *)newDocumentWithValues:(NSDictionary *)values error:(NSError **)error {
SyncedDocument *newDocument = [NSEntityDescription insertNewObjectForEntityForName:@"SyncedDocument" inManagedObjectContext:self.managedObjectContext];
for (NSString *eachKey in [values keyEnumerator]) {
[newDocument setValue:[values objectForKey:eachKey] forKey:eachKey];
}
if ([self save:error]) {
return newDocument;
} else {
return nil;
}
}
- (BOOL)userDeleteDocument:(SyncedDocument *)document error:(NSError **)error {
if (document.shadowID) {
document.userDeleted = [NSNumber numberWithBool:YES];
} else {
[self.managedObjectContext deleteObject:document];
}
return [self save:error];
}
- (BOOL)deleteDocument:(SyncedDocument *)document error:(NSError **)error {
[self.managedObjectContext deleteObject:document];
return [self save:error];
}
- (BOOL)save:(NSError **)error {
if ([[self managedObjectContext] hasChanges]) {
if (![[self managedObjectContext] save:error]) {
return NO;
}
}
return YES;
}
- (IBAction)beginSync:(id)sender {
totalQueuedClients = 0;
[activeClients removeAllObjects];
[queuedClients removeAllObjects];
[conflicts replaceCharactersInRange:NSMakeRange(0, [conflicts length]) withString:@""];
[self queueClient:[self GETServerDocuments]];
}
- (BOOL)isSyncing {
return [activeClients count] > 0 || [queuedClients count] > 0;
}
- (IBAction)cancelSync:(id)sender {
[queuedClients removeAllObjects];
for (HTTPClient *eachClient in [[activeClients copy] autorelease]) {
[self endActiveClient:eachClient];
}
}
- (IBAction)toggleAuthentication:(id)sender {
NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSArray *cookies = [cookieStorage cookiesForURL:[NSURL URLWithString:serviceRootURLString]];
if ([cookies count] > 0) {
[self signOut];
} else {
[self beginSync:sender];
}
}
- (void)signOut {
NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *each in [cookieStorage cookiesForURL:[NSURL URLWithString:serviceRootURLString]]) {
[cookieStorage deleteCookie:each];
}
self.serviceUsername = nil;
}
#pragma mark Client Requests
- (void)queueClient:(HTTPClient *)aClient {
totalQueuedClients++;
if ([activeClients count] == 0) {
[self beginActiveClient:aClient];
} else {
[queuedClients insertObject:aClient atIndex:0];
}
}
- (void)beginActiveClient:(HTTPClient *)aClient {
if (!self.isSyncing) {
[self.syncDelegate documentsControllerWillBeginSync:self];
[self.syncDelegate documentsController:self syncProgress:0.5];
}
[activeClients addObject:aClient];
[aClient beginFetchWithDelegate:self];
}
- (void)endActiveClient:(HTTPClient *)aClient {
[aClient stopFetching];
[activeClients removeObject:aClient];
if (!self.isSyncing) {
[self.syncDelegate documentsController:self syncProgress:1.0];
[self.syncDelegate documentsControllerDidCompleteSync:self conflicts:[[conflicts copy] autorelease]];
[conflicts replaceCharactersInRange:NSMakeRange(0, [conflicts length]) withString:@""];
} else {
[self.syncDelegate documentsController:self syncProgress:0.5 + ((1.0 - ((float)[queuedClients count] / (float)totalQueuedClients)) / 2.0)];
if ([activeClients count] == 0 && [queuedClients count] > 0) {
[self beginActiveClient:[queuedClients lastObject]];
[queuedClients removeLastObject];
}
}
}
- (HTTPClient *)GETServerDocuments {
NSMutableURLRequest *getDocumentsRequest = [[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@/v1/documents", self.serviceRootURLString]] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60] autorelease];
HTTPClient *getDocumentsClient = [HTTPClient clientWithRequest:getDocumentsRequest];
[getDocumentsClient setUserData:self];
return getDocumentsClient;
}
#pragma mark Client Requests Delegates
- (void)clientLogin:(HTTPClient *)aClient {
if (self.serviceUsername != nil && self.servicePassword != nil) {
NSURL *url = [NSURL URLWithString:@"https://www.google.com/accounts/ClientLogin"];
NSMutableURLRequest *authTokenRequest = [[[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60] autorelease];
aClient.request = authTokenRequest;
HTTPClient *authTokenClient = [HTTPClient clientWithRequest:authTokenRequest];
NSString *postString = [NSString stringWithFormat:@"Email=%@&Passwd=%@&source=%@&service=%@&accountType=%@", [self.serviceUsername stringByURLEncodingStringParameter], [self.servicePassword stringByURLEncodingStringParameter], [self.service stringByURLEncodingStringParameter], @"ah", @"GOOGLE"];
[authTokenClient setPostData:[postString dataUsingEncoding:NSUTF8StringEncoding]];
authTokenClient.initialRequest = aClient.initialRequest;
authTokenClient.userData = aClient.userData;
[self queueClient:authTokenClient];
[self endActiveClient:aClient];
} else {
[self cancelSync:nil];
[[self syncDelegate] documentsControllerSyncNewCredentials:self];
}
}
- (void)client:(HTTPClient *)aClient networkFailed:(NSError *)error {
[self cancelSync:nil];
[[self syncDelegate] documentsController:self syncClient:aClient networkFailed:error];
}
- (void)client:(HTTPClient *)aClient failedWithStatusCode:(NSInteger)statusCode data:(NSData *)data {
if (statusCode == 401 || statusCode == 403) {
if ([[[[aClient request] URL] absoluteString] rangeOfString:@"https://www.google.com/accounts/ClientLogin"].location == 0) {
[self cancelSync:nil];
[[self syncDelegate] documentsControllerSyncNewCredentials:self];
} else {
[self clientLogin:aClient];
}
} else {
[self cancelSync:nil];
[[self syncDelegate] documentsController:self syncClient:aClient failedWithStatusCode:statusCode data:data];
}
}
- (void)client:(HTTPClient *)aClient finishedWithData:(NSData *)data {
NSString *absoluteString = [[[aClient request] URL] absoluteString];
if ([absoluteString rangeOfString:@"https://www.google.com/accounts/ServiceLogin"].location == 0) {
[self clientLogin:aClient];
} else if ([absoluteString rangeOfString:@"https://www.google.com/accounts/ClientLogin"].location == 0) {
NSString* responseString = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];
NSDictionary *responseDict = [HTTPClient dictionaryWithResponseString:responseString];
NSString *authToken = [[responseDict objectForKey:@"Auth"] retain];
BOOL isInitialRequestAGET = [[aClient.initialRequest HTTPMethod] caseInsensitiveCompare:@"GET"] == NSOrderedSame;
NSString *requestString = nil;
if (isInitialRequestAGET) {
requestString = [NSString stringWithFormat:@"%@/_ah/login?continue=%@&auth=%@", self.serviceRootURLString, [[[aClient.initialRequest URL] absoluteString] stringByURLEncodingStringParameter], authToken];
} else {
requestString = [NSString stringWithFormat:@"%@/_ah/login?auth=%@", self.serviceRootURLString, authToken];
}
NSURL *url = [NSURL URLWithString:requestString];
NSMutableURLRequest *authenticationCookieRequest = [[[NSMutableURLRequest alloc] initWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:60] autorelease];
HTTPClient *authenticationCookieClient = [HTTPClient clientWithRequest:authenticationCookieRequest];
authenticationCookieClient.initialRequest = aClient.initialRequest;
authenticationCookieClient.userData = aClient.userData;
[self queueClient:authenticationCookieClient];
} else if ([absoluteString rangeOfString:@"/_ah/login?"].location != NSNotFound) {
// XXX perform initial request... bit ungly to handle the case where authentication fails when making a PUT, POST, or DELETE request. In that case teh continue paramater of the cookie client will not work.
} else if ([[aClient userData] respondsToSelector:@selector(processSyncResponse:)]) {
[[aClient userData] processSyncResponse:data];
}
[self endActiveClient:aClient];
}
#pragma mark Process initial GETDocuments response
- (void)processSyncResponse:(NSData *)data {
NSArray *serverDocuments = [[[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease] JSONValue];
NSMutableDictionary *serverDocumentsByID = [NSMutableDictionary dictionary];
NSEntityDescription *documentEntity = [NSEntityDescription entityForName:@"SyncedDocument" inManagedObjectContext:self.managedObjectContext];
NSError *error = nil;
// 1. Map server documents to ID's
for (NSDictionary *each in serverDocuments) {
[serverDocumentsByID setObject:each forKey:[each objectForKey:@"id"]];
}
// 2. Map local documents to server documents.
NSMutableArray *syncingDocuments = [NSMutableArray array];
NSArray *localDocuments = [self documents:&error];
if (localDocuments) {
for (SyncedDocument *eachDocument in localDocuments) {
if (eachDocument.isServerDocument) {
NSDictionary *eachServerState = [serverDocumentsByID objectForKey:eachDocument.shadowID];
if (eachServerState) {
eachDocument.serverVersion = [[eachServerState objectForKey:@"version"] integerValue];
[serverDocumentsByID removeObjectForKey:eachDocument.shadowID];
eachDocument.isDeletedFromServer = NO;
} else {
eachDocument.isDeletedFromServer = YES;
}
}
[syncingDocuments addObject:eachDocument];
}
} else {
NSLog([error description]);
}
// 3. Create new local documents for new server documents.
for (NSString *eachServerID in [serverDocumentsByID allKeys]) {
NSDictionary *eachServerState = [serverDocumentsByID objectForKey:eachServerID];
SyncedDocument *eachDocument = [[[SyncedDocument alloc] initWithEntity:documentEntity insertIntoManagedObjectContext:nil] autorelease];
eachDocument.serverVersion = [[eachServerState objectForKey:@"version"] integerValue];
eachDocument.shadowID = [eachServerState objectForKey:@"id"];
[syncingDocuments addObject:eachDocument];
}
// 4. Beging processing requests.
for (SyncedDocument *each in syncingDocuments) {
HTTPClient *requestClient = [each buildSyncRequest];
if (requestClient) {
[self queueClient:requestClient];
}
}
}
@end
NSString *DocumentSharingPort = @"DocumentSharingPort";
NSString *DocumentSharingServiceName = @"DocumentSharingServiceName";
NSString *DisableAutoLockWhenSharingDocuments = @"DisableAutoLockWhenSharingDocuments";
NSString *DocumentsDefaultEmail = @"DocumentsDefaultEmail";