/*

 Copyright (C) 2017 Apple Inc. All Rights Reserved.

 See LICENSE.txt for this sample’s licensing information

 Abstract:

 Displays details about a song.

 */

#import "SongDetailsController.h"

#import "Song.h"

#import "Category.h"

@interface SongDetailsController ()

@property (nonatomic, strong) NSDateFormatter *dateFormatter;

@end

#pragma mark -

@implementation SongDetailsController

- (NSDateFormatter *)dateFormatter {

    if (_dateFormatter == nil) {

        _dateFormatter = [[NSDateFormatter alloc] init];

        _dateFormatter.dateStyle = NSDateFormatterMediumStyle;

        _dateFormatter.timeStyle = NSDateFormatterNoStyle;

    }

    return _dateFormatter;

}

- (void)viewDidLoad

{

    [super viewDidLoad];

    [[NSNotificationCenter defaultCenter] addObserver:self

                                             selector:@selector(localeChanged:)

                                                 name:NSCurrentLocaleDidChangeNotification

                                               object:nil];

}

- (void)dealloc

{

    [[NSNotificationCenter defaultCenter] removeObserver:self

                                                    name:NSCurrentLocaleDidChangeNotification

                                                  object:nil];

}

- (NSInteger)tableView:(UITableView *)table numberOfRowsInSection:(NSInteger)section {

    return 4;

}

- (UITableViewCell *)tableView:(UITableView *)table cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *kCellIdentifier = @"SongDetailCell";

    UITableViewCell *cell = (UITableViewCell *)[self.tableView dequeueReusableCellWithIdentifier:kCellIdentifier forIndexPath:indexPath];

    switch (indexPath.row) {

        case 0: {

            cell.textLabel.text = NSLocalizedString(@"album", @"album label");

            cell.detailTextLabel.text = self.song.album;

        } break;

        case 1: {

            cell.textLabel.text = NSLocalizedString(@"artist", @"artist label");

            cell.detailTextLabel.text = self.song.artist;

        } break;

        case 2: {

            cell.textLabel.text = NSLocalizedString(@"category", @"category label");

            cell.detailTextLabel.text = self.song.category.name;

        } break;

        case 3: {

            cell.textLabel.text = NSLocalizedString(@"released", @"released label");

            cell.detailTextLabel.text = [self.dateFormatter stringFromDate:self.song.releaseDate];

        } break;

    }

    return cell;

}

- (NSString *)tableView:(UITableView *)table titleForHeaderInSection:(NSInteger)section {

    return self.song.title;

}

#pragma mark - Locale changes

- (void)localeChanged:(NSNotification *)notif

{

    // The user changed the locale (region format) in Settings, so we are notified here to

    // update the date format in the table view cells.

    //

    [self.tableView reloadData];

}

@end