/*

File: AppDelegate.m

Abstract: The Stickies application delegate

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*/

#import "AppDelegate.h"

#import "Sticky.h"

#import "StickyWindowController.h"

@implementation AppDelegate

#pragma mark

#pragma mark Persistence

- (NSString *)folderName

{

    return @"SyncExamples";

}

- (NSString *)fileName

{

    return @"com.mycompany.StickiesUsingCoreData.xml";

}

- (NSString *)applicationSupportFolder

{

    NSString *applicationSupportFolder = nil;

    FSRef foundRef;

    OSErr err = FSFindFolder(kUserDomain, kApplicationSupportFolderType, kDontCreateFolder, &foundRef);

    if (err != noErr) {

        NSRunAlertPanel(@"Alert", @"Can't find application support folder", @"Quit", nil, nil);

        [[NSApplication sharedApplication] terminate:self];

    } else {

        unsigned char path[1024];

        FSRefMakePath(&foundRef, path, sizeof(path));

        applicationSupportFolder = [NSString stringWithUTF8String:(char *)path];

        applicationSupportFolder = [applicationSupportFolder stringByAppendingPathComponent:[self folderName]];

    }

    return applicationSupportFolder;

}

- (NSManagedObjectContext *)managedObjectContext

{

    NSError *error;

    NSString *applicationSupportFolder = nil;

    NSURL *url;

    NSFileManager *fileManager;

    NSPersistentStoreCoordinator *coordinator;

    NSPersistentStore *store;

    NSURL *fastSyncDetailURL;

    if (managedObjectContext) {

        return managedObjectContext;

    }

    fileManager = [NSFileManager defaultManager];

    applicationSupportFolder = [self applicationSupportFolder];

    if ( ![fileManager fileExistsAtPath:applicationSupportFolder isDirectory:NULL] ) {

        [fileManager createDirectoryAtPath:applicationSupportFolder withIntermediateDirectories:YES attributes:nil error:nil];

    }

    // Request a refresh sync if the file doesn't exist

    if (![fileManager fileExistsAtPath:[applicationSupportFolder stringByAppendingPathComponent:[self fileName]]]){

        NSLog(@"Refresh sync because backup file doesn't exist.");

        shouldRefreshSync = YES;

    }

    url = [NSURL fileURLWithPath: [applicationSupportFolder stringByAppendingPathComponent:[self fileName]]];   

    coordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[NSManagedObjectModel mergedModelFromBundles:nil]];

    store = [coordinator addPersistentStoreWithType:NSXMLStoreType configuration:nil URL:url options:nil error:&error];

    if (store != nil) {

        fastSyncDetailURL = [NSURL fileURLWithPath:[applicationSupportFolder stringByAppendingPathComponent:@"com.mycompany.StickiesUsingCoreData.fastsyncstore"]];

        [coordinator setStoresFastSyncDetailsAtURL:fastSyncDetailURL forPersistentStore:store];

        managedObjectContext = [[NSManagedObjectContext alloc] init];

        [managedObjectContext setPersistentStoreCoordinator: coordinator];

    } else {

        // Not an error if the files is not there.

        [[NSApplication sharedApplication] presentError:error];

    }    

    [coordinator release];

    return managedObjectContext;

}

#pragma mark

#pragma mark Sync

- (ISyncClient *)syncClient

{

    NSString *clientIdentifier = [[NSBundle mainBundle] bundleIdentifier];

    NSString *reason = @"unknown error";

    ISyncClient *client;

    @try {

        client = [[ISyncManager sharedManager] clientWithIdentifier:clientIdentifier];

        if (nil == client) {

            if (![[ISyncManager sharedManager] registerSchemaWithBundlePath:

                  [[self applicationSupportFolder] stringByAppendingPathComponent:[@"Stickies" stringByAppendingPathExtension:@"syncschema"]]]) {

                reason = @"error registering the Stickies sync schema";

            } else {

                client = [[ISyncManager sharedManager] registerClientWithIdentifier:clientIdentifier descriptionFilePath:[[NSBundle mainBundle] pathForResource:@"ClientDescription" ofType:@"plist"]];

                [client setShouldSynchronize:YES withClientsOfType:ISyncClientTypeApplication];

                [client setShouldSynchronize:YES withClientsOfType:ISyncClientTypeDevice];

                [client setShouldSynchronize:YES withClientsOfType:ISyncClientTypeServer];

                [client setShouldSynchronize:YES withClientsOfType:ISyncClientTypePeer];

            }

        }

    }

    @catch (id exception) {

        client = nil;

        reason = [exception reason];

    }

    if (nil == client) {

        NSRunAlertPanel(@"You can not sync your Stickies.", [NSString stringWithFormat:@"Failed to register the sync client: %@", reason], @"OK", nil, nil);

    }

    return client;

}

- (void)client:(ISyncClient *)client mightWantToSyncEntityNames:(NSArray *)entityNames

{

    NSLog(@"Saving for alert to sync...");

    [self saveAction:self];

}

- (NSArray *)managedObjectContextsToMonitorWhenSyncingPersistentStoreCoordinator:(NSPersistentStoreCoordinator *)coordinator

{

    return [NSArray arrayWithObject:[self managedObjectContext]];

}

- (NSArray *)managedObjectContextsToReloadAfterSyncingPersistentStoreCoordinator:(NSPersistentStoreCoordinator *)coordinator

{

    return [NSArray arrayWithObject:[self managedObjectContext]];

}

- (NSDictionary *)persistentStoreCoordinator:(NSPersistentStoreCoordinator *)coordinator willPushRecord:(NSDictionary *)record forManagedObject:(NSManagedObject *)managedObject inSyncSession:(ISyncSession *)session

{

    NSLog(@"push %@ = %@", [managedObject objectID], [record description]);

    return record;

}

- (ISyncChange *)persistentStoreCoordinator:(NSPersistentStoreCoordinator *)coordinator willApplyChange:(ISyncChange *)change toManagedObject:(NSManagedObject *)managedObject inSyncSession:(ISyncSession *)session

{

    NSLog(@"pull %@", [change description]);

    return change;

}

#pragma mark

#pragma mark Application

- (void)syncAction:(id)sender

{

    NSError *error = nil;

    ISyncClient *client = [self syncClient];

    if (nil != client) {

        [[[self managedObjectContext] persistentStoreCoordinator] syncWithClient:client inBackground:YES handler:self error:&error];

    }

    if (nil != error) {

        [[NSApplication sharedApplication] presentError:error];

    }

}

- (void)saveAction:(id)sender

{

    NSError *error = nil;

    [[self managedObjectContext] save:&error];

    if (nil != error) {

        [[NSApplication sharedApplication] presentError:error];

    } else {

        [self syncAction:sender];

    }

}

- (void)saveInMainThread:(id)sender

{

    NSLog(@"Saving after delay...");

    [self performSelector:@selector(saveAction:) withObject:sender afterDelay:0.0];

}

- (void)applicationDidFinishLaunching:(NSNotification *)notification 

{

    // Next time through the event loop, load all the stickies.

    // This delay is required because the NSArrayController's fetch request is delayed until the next event loop

    NSLog(@"will load all stickies");

    [self performSelector:@selector(loadAllStickies) withObject:nil afterDelay:0.0];

    [[self syncClient] setSyncAlertHandler:self selector:@selector(client:mightWantToSyncEntityNames:)];

    [self syncAction:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(managedObjectContextDidChange:) name:NSManagedObjectContextObjectsDidChangeNotification object:nil];

}

- (void)applicationWillTerminate:(NSNotification *)notification

{

    [self saveAction:nil];

}

- (void)createWindowControllersForStickies:(NSArray *)stickies

{

    if (nil == windowControllers) windowControllers = [[NSMutableArray alloc] init];

    for(Sticky *sticky in stickies)

    {

        if([self managedObjectContext] == [sticky managedObjectContext])

        {

            StickyWindowController *controller = [[StickyWindowController alloc] initWithSticky:sticky];

            [controller showWindow:self];

            [windowControllers addObject:controller];

        }

    }

}

- (void)deleteWindowControllersForStickies:(NSArray *)stickies

{

    for(Sticky *sticky in stickies)

    {

        for(StickyWindowController *controller in windowControllers)

        {

            if([[sticky objectID] isEqual:[[controller sticky] objectID]])

            {

                [controller close];

                [windowControllers removeObject:controller];

                break;

            }

        }

    }

}

- (void)loadAllStickies 

{

    // Fault each sticky in the array controller and call it's setup function

    [self createWindowControllersForStickies:[stickiesController arrangedObjects]];

}

- (void)removeSticky:(Sticky *)aSticky 

{

    if (nil != aSticky) [[self managedObjectContext] deleteObject:aSticky];

}

- (void)managedObjectContextDidChange:(NSNotification *)notification

{

    NSLog(@"Managed Object Context changed");

    [self createWindowControllersForStickies:[[[notification userInfo] objectForKey:NSInsertedObjectsKey] allObjects]];

    [self deleteWindowControllersForStickies:[[[notification userInfo] objectForKey:NSDeletedObjectsKey] allObjects]];

}

@end