AppsViewController.h

//
//  AppsViewController.h
//  Clean for VK
//
//  Created by VITALIY PODOLSKIY on 01/10/15.
//  Copyright © 2015 VITALIY PODOLSKIY. All rights reserved.
//

#import "BaseViewController.h"

@interface AppsViewController : BaseViewController

@property (nonatomic, strong) NSString *developerURL;

@end

AppsViewController.m

//
//  AppsViewController.m
//  Clean for VK
//
//  Created by VITALIY PODOLSKIY on 01/10/15.
//  Copyright © 2015 VITALIY PODOLSKIY. All rights reserved.
//

#import "AppsViewController.h"
#import "AppsTableViewCell.h"

static NSString * const kCellIdentifier = @"appsCell";

@interface AppsViewController ()

@property (weak, nonatomic) IBOutlet UITableView *tableView;
@property (nonatomic, strong) NSMutableArray *apps;

@end

@implementation AppsViewController

- (void)viewDidLoad {
    
    [super viewDidLoad];
    self.developerURL = DEVELOPER_URL;
    [self setupTableView];
    self.apps = [NSMutableArray array];
    NSURLRequest *request = [[NSURLRequest alloc] initWithURL:[NSURL URLWithString:self.developerURL]];
    [NSURLConnection sendAsynchronousRequest:request
                                       queue:[NSOperationQueue mainQueue]
                           completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
                               NSDictionary *JSON = [NSJSONSerialization JSONObjectWithData:data
                                                                                    options:0
                                                                                      error:nil];
                               for (NSDictionary *app in JSON[@"results"]) {
                                   NSString *name = app[@"trackName"];
                                   if (name) {
                                       [self.apps addObject:app];
                                   }
                               }
                               [self.tableView reloadData];
                           }];
} // viewDidLoad


#pragma mark - TableView Delegate


- (void)setupTableView {
    
    self.tableView.backgroundColor = [UIColor clearColor];
    UINib *nib = [UINib nibWithNibName:@"AppsTableViewCell"
                                bundle:nil];
    [self.tableView registerNib:nib
         forCellReuseIdentifier:kCellIdentifier];
} // setupTableView


- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    return 100;
} // heightForRowAtIndexPath


- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    
    return 1;
} // numberOfSectionsInTableView


- (NSInteger)tableView:(UITableView *)tableView
 numberOfRowsInSection:(NSInteger)section {
    
    if (self.apps.count == 0) {
        return 0;
    }
    else {
        return self.apps.count;
    }
} // numberOfRowsInSection


- (UITableViewCell *)tableView:(UITableView *)tableView
         cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    AppsTableViewCell *cell = (AppsTableViewCell *)[tableView dequeueReusableCellWithIdentifier:kCellIdentifier];
    if (!cell) {
        cell = [[AppsTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                           reuseIdentifier:kCellIdentifier];
    }
    if (self.apps.count == 0) {
        cell.appTitleLabel.text = @"Loading";
    }
    else {
        NSDictionary *app = self.apps[indexPath.row];
        NSString *ratingCount = app[@"userRatingCount"];
        NSString *currentRating = app[@"averageUserRating"];
        NSString *starString = @"";
        NSString *primaryGenreName = app[@"primaryGenreName"];
        cell.appTitleLabel.text = [app[@"trackName"] componentsSeparatedByString:@"-"][0];
        if (ratingCount == nil) {
            ratingCount = @"0";
        }
        if (currentRating) {
            NSNumber *starRating = @(ceil(currentRating.doubleValue));
            for (NSInteger i = 0; i < 5; i++) {
                if ([starRating intValue] - i > 0) {
                    starString = [starString stringByAppendingString:@"★"];
                }
                else {
                    starString = [starString stringByAppendingString:@"☆"];
                }
            }
            starString = [starString stringByAppendingString:@" "];
        }
        NSString *appRewiews = NSLocalizedString(@"reviews", nil);
        NSMutableParagraphStyle *ratingParagraphStyle = [[NSParagraphStyle defaultParagraphStyle]mutableCopy];
        ratingParagraphStyle.alignment = NSTextAlignmentLeft;
        NSMutableAttributedString *rating = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@"%@ %@ %@", starString, ratingCount, appRewiews]];
        NSUInteger strLength = starString.length;
        if (strLength > 0) {
            [rating addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Menlo-Regular" size:20.0] range:NSMakeRange(0,5)];
            [rating addAttribute:NSForegroundColorAttributeName value:[UIColor colorWithRed:1.000 green:0.961 blue:0.000 alpha:1.000] range:NSMakeRange(0,5)];
        }
        [rating addAttribute:NSFontAttributeName value:[UIFont fontWithName:@"Menlo-Regular" size:15.0] range:NSMakeRange(6,strLength)];
        [rating addAttribute:NSParagraphStyleAttributeName value:ratingParagraphStyle range:NSMakeRange(0,strLength)];
        [rating addAttribute:NSForegroundColorAttributeName value:[UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0] range:NSMakeRange(6,strLength)];
        cell.appStarLabel.attributedText = rating;
        cell.appStarLabel.backgroundColor = [UIColor clearColor];
        [cell.appStarLabel sizeToFit];
        NSURL *imageUrl = [NSURL URLWithString:[NSString stringWithFormat:@"%@", app[@"artworkUrl512"]]];
        cell.imageAppIcon.imageURL = imageUrl;
        cell.appDescLabel.text = [NSString stringWithFormat:@"%@ - %@", NSLocalizedString(@"primaryGenreName", nil), primaryGenreName];
    }
    cell.backgroundColor = [UIColor clearColor];
    return cell;
} // cellForRowAtIndexPath


- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    
    [tableView deselectRowAtIndexPath:indexPath
                             animated:YES];
    AppsTableViewCell *cell = (AppsTableViewCell *)[self.tableView cellForRowAtIndexPath:indexPath];
    [UIView animateWithDuration:0.2
                     animations:^{
                         cell.cellGradient.backgroundColor = [UIColor colorWithRed:0.271
                                                                             green:0.408
                                                                              blue:0.573
                                                                             alpha:0.4];
                     } completion:^(BOOL finished) {
                         cell.cellGradient.backgroundColor = [UIColor clearColor];
                         dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
                             
                         });
                     }];
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:self.apps[indexPath.row][@"trackViewUrl"]]];
} // didSelectRowAtIndexPath

@end