espagram/Espagram/EspagramWordsInLessonViewController.m

//
//  EspagramWordsInLessonViewController.m
//  Espagram
//
//  Created by Abel Fokkinga on 11/14/12.
//  Copyright (c) 2012 Abel Fokkinga. All rights reserved.
//

#import "EspagramWordsInLessonViewController.h" 
#import "Conjugator.h"
#import "Verb+Create.h"

@interface EspagramWordsInLessonViewController ()
@end

@implementation EspagramWordsInLessonViewController

@synthesize lesson = _lesson;


- (IBAction)AddButtonPressed:(id)sender {
    [self performSegueWithIdentifier:@"Add A Word To Lesson" sender:self];
}

- (void) addWord:(NSString *)word withMeaning:(NSString *)meaning{
    if ( word ) {        
        [Verb addVerb:word andMeaning:meaning toLesson:self.lesson];
    }
    [[self parentViewController] dismissViewControllerAnimated:TRUE completion:^{
        NSLog(@"Word added");
    }];
}

- (void) cancelAddingWord{
    [[self parentViewController] dismissViewControllerAnimated:TRUE completion:^{ NSLog(@"Adding a word cancelled");
    }];
}

- (void)setupFetchedResultsController // attaches an NSFetchRequest to this UITableViewController
{
    NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"Verb"];
    request.sortDescriptors = [NSArray arrayWithObject:[NSSortDescriptor sortDescriptorWithKey:@"verb"
                    ascending:YES
                     selector:@selector(localizedCompare:)]];
 
    request.predicate = [NSCompoundPredicate andPredicateWithSubpredicates:[NSArray arrayWithObjects:[NSPredicate predicateWithFormat:@"lesson.title = %@", self.lesson.title], [NSPredicate predicateWithFormat:@"lesson.tense = %@", self.lesson.tense], [NSPredicate predicateWithFormat:@"lesson.conjugator = %@", self.lesson.conjugator],nil]];
    
    
    self.fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:request
                managedObjectContext:self.lesson.managedObjectContext
                  sectionNameKeyPath:nil
                           cacheName:nil];
  
  // Use for copying verbs from other tense
  //  if ( [self.lesson.verbs count] == 0){
  //      Lesson * copyLesson = [self getLessonWithName:self.lesson.title andTense:@"PRESENT_PERFECT" withConjugator:self.lesson.conjugator inContext:[self.lesson managedObjectContext]];
        
   //    if ( copyLesson && [copyLesson.verbs count] > 0){
   //         for (Verb * v in copyLesson.verbs) {
   //             [Verb addVerb:v.verb andMeaning:v.meaning toLesson:self.lesson];
   //         }
   //         [[self.lesson managedObjectContext] save:nil];
   //     }
   // }
}


- (void)setLesson:(Lesson *)lesson
{
    _lesson = lesson;
    self.title = lesson.title;
    [self setupFetchedResultsController];
}

- (Lesson *) getLessonWithName:(NSString *)title andTense:(NSString *)tense withConjugator:(NSString *)conjugator inContext:(NSManagedObjectContext *)context
{
    Lesson * les = nil;

    NSFetchRequest *request = [[NSFetchRequest alloc] initWithEntityName:@"Lesson"];
        
        
    // Where clause
    request.predicate = [NSCompoundPredicate andPredicateWithSubpredicates:[NSArray arrayWithObjects:[NSPredicate predicateWithFormat:@"title = %@", title],[NSPredicate predicateWithFormat:@"tense = %@", tense], [NSPredicate predicateWithFormat:@"conjugator = %@", conjugator],nil]];
        
    NSError *error = nil;
    NSArray *lessons = [context executeFetchRequest:request error:&error];
        
    if ( lessons && lessons.count > 0 ){
            return [lessons lastObject];
    }

    return les;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Word Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
    
    // Configure the cell...
    Verb * verb = [self.fetchedResultsController objectAtIndexPath:indexPath];
    cell.textLabel.text = verb.verb;
    cell.detailTextLabel.text = verb.meaning;
    
    return cell;
}


- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if ( [segue.identifier isEqualToString:@"Add A Word To Lesson"]) {
        [segue.destinationViewController setDataSource:self];
    }
    
    if ( [segue.identifier isEqualToString:@"Conjugate"]) {
        Verb * selectedVerb = [self.fetchedResultsController objectAtIndexPath:sender];
        [segue.destinationViewController setVerb:selectedVerb];
    }
}


// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Return NO if you do not want the specified item to be editable.
    return YES;
}



// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source
        //[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationFade];
        Verb * selectedVerb = [self.fetchedResultsController objectAtIndexPath:indexPath];
        [self.lesson removeVerbsObject:selectedVerb];
    }   
 //   else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
 //   }
}


/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath
{
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath
{
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}
*/

#pragma mark - Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    [self performSegueWithIdentifier:@"Conjugate" sender:indexPath];
}

@end