ios-newsstand-app/newsstand-app/KeyboardReceiver.m
//
// KeyboardReceiver.m
// TastyImitationKeyboard
//
// Created by L on 03/11/14.
// Copyright (c) 2014 Apple. All rights reserved.
//
#import "KeyboardReceiver.h"
#import "Message.h"
@implementation ReceivedMessage
@end
@interface KeyboardReceiver ()
@property (readonly, strong, nonatomic) NSManagedObjectContext *managedObjectContext;
@property (readonly, strong, nonatomic) NSManagedObjectModel *managedObjectModel;
@property (readonly, strong, nonatomic) NSPersistentStoreCoordinator *persistentStoreCoordinator;
@end
@implementation KeyboardReceiver
- (NSArray *) receiveMessages {
if ([self managedObjectContext] == nil) {
NSLog(@"managedObjectContext not available");
return nil;
}
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] initWithEntityName:@"Message"];
NSPredicate *fetchPredicate = [NSPredicate predicateWithFormat:@"notSent == 0"];
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"timestamp" ascending:YES];
[fetchRequest setSortDescriptors:@[sortDescriptor]];
[fetchRequest setPredicate:fetchPredicate];
NSArray *fetchResults = [[self managedObjectContext] executeFetchRequest:fetchRequest error:nil];
NSMutableArray *result = [NSMutableArray arrayWithCapacity:[fetchResults count]];
for (id item in fetchResults) {
ReceivedMessage *newMessage = [[ReceivedMessage alloc] init];
newMessage.text = ((Message *)item).text;
newMessage.timestamp = ((Message *)item).timestamp;
[result addObject:newMessage];
[[self managedObjectContext] deleteObject:(NSManagedObject *)item];
}
[[self managedObjectContext] save:nil];
return result;
}
- (NSString *) getCurrentMessage {
if ([self managedObjectContext] == nil) {
NSLog(@"managedObjectContext not available");
return @"";
}
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] initWithEntityName:@"Message"];
NSPredicate *fetchPredicate = [NSPredicate predicateWithFormat:@"notSent == 1"];
NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"timestamp" ascending:YES];
[fetchRequest setSortDescriptors:@[sortDescriptor]];
[fetchRequest setPredicate:fetchPredicate];
[fetchRequest setFetchLimit:1];
NSArray *fetchResults = [[self managedObjectContext] executeFetchRequest:fetchRequest error:nil];
if ([fetchResults count] == 0) {
return @"";
}
return ((Message *)fetchResults[0]).text;
}
#pragma mark - Core Data stack
@synthesize managedObjectContext = _managedObjectContext;
@synthesize managedObjectModel = _managedObjectModel;
@synthesize persistentStoreCoordinator = _persistentStoreCoordinator;
- (NSURL *)applicationDocumentsDirectory {
// The directory the application uses to store the Core Data store file. This code uses a directory named "LL.Corewat" in the application's documents directory.
return [[[NSFileManager defaultManager] URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
}
- (NSManagedObjectModel *)managedObjectModel {
// The managed object model for the application. It is a fatal error for the application not to be able to find and load its model.
if (_managedObjectModel != nil) {
return _managedObjectModel;
}
NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"Model" withExtension:@"momd"];
_managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:modelURL];
return _managedObjectModel;
}
- (NSPersistentStoreCoordinator *)persistentStoreCoordinator {
// The persistent store coordinator for the application. This implementation creates and return a coordinator, having added the store for the application to it.
if (_persistentStoreCoordinator != nil) {
return _persistentStoreCoordinator;
}
// Create the coordinator and store
_persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:[self managedObjectModel]];
NSURL *directory = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:@"group.keyboard.app"];
if (directory == nil) {
NSLog(@"Error accessing group directory!");
return nil;
}
NSURL *storeURL = [directory URLByAppendingPathComponent:@"db.sqlite"];
//let url = directory!.URLByAppendingPathComponent("db.sqlite")
NSError *error = nil;
NSString *failureReason = @"There was an error creating or loading the application's saved data.";
if (![_persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeURL options:nil error:&error]) {
// Report any error we got.
NSMutableDictionary *dict = [NSMutableDictionary dictionary];
dict[NSLocalizedDescriptionKey] = @"Failed to initialize the application's saved data";
dict[NSLocalizedFailureReasonErrorKey] = failureReason;
dict[NSUnderlyingErrorKey] = error;
error = [NSError errorWithDomain:@"YOUR_ERROR_DOMAIN" code:9999 userInfo:dict];
// Replace this with code to handle the error appropriately.
// abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
return _persistentStoreCoordinator;
}
- (NSManagedObjectContext *)managedObjectContext {
// Returns the managed object context for the application (which is already bound to the persistent store coordinator for the application.)
if (_managedObjectContext != nil) {
return _managedObjectContext;
}
NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator];
if (!coordinator) {
return nil;
}
_managedObjectContext = [[NSManagedObjectContext alloc] init];
[_managedObjectContext setPersistentStoreCoordinator:coordinator];
return _managedObjectContext;
}
#pragma mark - Core Data Saving support
- (void)saveContext {
NSManagedObjectContext *managedObjectContext = self.managedObjectContext;
if (managedObjectContext != nil) {
NSError *error = nil;
if ([managedObjectContext hasChanges] && ![managedObjectContext save:&error]) {
// Replace this implementation with code to handle the error appropriately.
// abort() causes the application to generate a crash log and terminate. You should not use this function in a shipping application, although it may be useful during development.
NSLog(@"Unresolved error %@, %@", error, [error userInfo]);
abort();
}
}
}
@end