#import Foundation/Foundation.h
#import CoreData/CoreData.h

NS_ENUM(int16_t, THDiaryEntryMood) {
    THDiaryEntryMoodGood = 0,
    THDiaryEntryMoodAverage = 1,
    THDiaryEntryMoodBad = 2
};

@interface THDiaryEntry : NSManagedObject

@property (nonatomic, retain) NSString * body;
@property (nonatomic) NSTimeInterval date;
@property (nonatomic, retain) NSData * imageData;
@property (nonatomic, retain) NSString * location;
@property (nonatomic) int16_t mood;

@property (nonatomic, readonly) NSString *sectionName;

@end

#import "THDiaryEntry.h"

@implementation THDiaryEntry

@dynamic body;
@dynamic date;
@dynamic imageData;
@dynamic location;
@dynamic mood;

- (NSString *)sectionName {
    NSDate *date = [NSDate dateWithTimeIntervalSince1970:self.date];

    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"MMM yyy"];

    return [dateFormatter stringFromDate:date];
}

@end

duplicate symbol _THDiaryEntryMood in:
    /Users/deegreene/Library/Developer/Xcode/DerivedData/Diary-bijfeztneqrjqeeljxbefvflgvxc/Build/Intermediates/Diary.build/Debug-iphonesimulator/Diary.build/Objects-normal/i386/THNewEntryViewController.o
    /Users/deegreene/Library/Developer/Xcode/DerivedData/Diary-bijfeztneqrjqeeljxbefvflgvxc/Build/Intermediates/Diary.build/Debug-iphonesimulator/Diary.build/Objects-normal/i386/THDiaryEntry.o
duplicate symbol _THDiaryEntryMood in:
    /Users/deegreene/Library/Developer/Xcode/DerivedData/Diary-bijfeztneqrjqeeljxbefvflgvxc/Build/Intermediates/Diary.build/Debug-iphonesimulator/Diary.build/Objects-normal/i386/THNewEntryViewController.o
    /Users/deegreene/Library/Developer/Xcode/DerivedData/Diary-bijfeztneqrjqeeljxbefvflgvxc/Build/Intermediates/Diary.build/Debug-iphonesimulator/Diary.build/Objects-normal/i386/THEntryListViewController.o
ld: 2 duplicate symbols for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

#import UIKit/UIKit.h

@interface THNewEntryViewController : UIViewController

@property (weak, nonatomic) IBOutlet UITextField *textField;

- (IBAction)doneWasPressed:(id)sender;
- (IBAction)cancelWasPressed:(id)sender;

- (void)insertDiaryEntry;
- (void)dismissSelf;

@end

#import "THNewEntryViewController.h"
#import "THDiaryEntry.h"
#import "THCoreDataStack.h"

@interface THNewEntryViewController ()

@end

@implementation THNewEntryViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

/*
#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}
*/

- (void)insertDiaryEntry {
    THCoreDataStack *coreDataStack = [THCoreDataStack defaultStack];
    THDiaryEntry *entry = [NSEntityDescription insertNewObjectForEntityForName:@"THDiaryEntry" inManagedObjectContext:coreDataStack.managedObjectContext];
    entry.body = self.textField.text;
    entry.date = [[NSDate date] timeIntervalSince1970];
    [coreDataStack saveContext];
}

- (void)dismissSelf {
    [self.presentingViewController dismissViewControllerAnimated:YES completion:nil];
}

- (IBAction)doneWasPressed:(id)sender {
    [self insertDiaryEntry];
    [self dismissSelf];
}

- (IBAction)cancelWasPressed:(id)sender {
    [self dismissSelf];
}

@end

#import UIKit/UIKit.h

@interface THEntryListViewController : UITableViewController

@end

#import "THEntryListViewController.h"
#import "THCoreDataStack.h"
#import "THDiaryEntry.h"

@interface THEntryListViewController () <NSFetchedResultsControllerDelegate>

@property (nonatomic, strong) NSFetchedResultsController *fetchedResultsController;

@end

@implementation THEntryListViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // Uncomment the following line to preserve selection between presentations.
    // self.clearsSelectionOnViewWillAppear = NO;

    // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
    // self.navigationItem.rightBarButtonItem = self.editButtonItem;

    [self.fetchedResultsController performFetch:nil];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (NSFetchRequest *)entryListFetchRequest {
    NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"THDiaryEntry"];

    fetchRequest.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"date" ascending:NO]];

    return fetchRequest;
}

- (NSFetchedResultsController *)fetchedResultsController {
    if (_fetchedResultsController != nil) {
        return  _fetchedResultsController;
    }

    THCoreDataStack *coreDataStack = [THCoreDataStack defaultStack];
    NSFetchRequest *fetchRequest = [self entryListFetchRequest];

    _fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:coreDataStack.managedObjectContext sectionNameKeyPath:nil cacheName:nil];
    _fetchedResultsController.delegate = self;

    return _fetchedResultsController;
}

- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller {
    [self.tableView reloadData];
}

#pragma mark - Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    // Return the number of sections.
    return self.fetchedResultsController.sections.count;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    // Return the number of rows in the section.
    id <NSFetchedResultsSectionInfo> sectionInfo = [self.fetchedResultsController sections] [section];
    return [sectionInfo numberOfObjects];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

    THDiaryEntry *entry = [self.fetchedResultsController objectAtIndexPath:indexPath];
    cell.textLabel.text = entry.body;

    return cell;
}

+ Diary.xcdatamodeld
+ ENTITIES
+ THDiaryEntry
+ Editor
+ Create NSManagedObject Subclass