MainVC.Swift

//
//  MainViewController.swift
//  Badges
//
//  Created by Charles Kang on 6/14/16.
//  Copyright © 2016 Charles Kang. All rights reserved.
//

import UIKit
import SwiftyJSON
import SDWebImage

class MainViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
    
    @IBOutlet var collectionView: UICollectionView!
    var objects = [[String: String]]()
    
    override func viewDidLoad()
    {
        super.viewDidLoad()
        
        let khanAPI = BadgeAPI()
        khanAPI.fetch { result in
            
            switch result {
            case .success(let objects):
                self.objects = objects
            case .failure(let error):
                print(error)
            }
        }
    }
    
    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int
    {
        return self.objects.count
    }
    
    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell
    {
        let cell = collectionView.dequeueReusableCellWithReuseIdentifier("cellIdentifier", forIndexPath: indexPath) as! BadgeCollectionViewCell
        
        self.collectionView.reloadData()
        
        cell.layer.borderColor = UIColor.blackColor().CGColor
        cell.layer.borderWidth = 1
        cell.layer.cornerRadius = 10
        
        let orderedDict = objects.sort {
            if ($0["category"] == $1["category"]) {
                return $0["category"] < $1["category"]
            } else {
                return $0["category"] < $1["category"]
            }
        }
        
        let object = orderedDict[indexPath.row]
        cell.badgeLabel.text = object["title"]
        
        let imageURL: NSURL? = NSURL(string: object["icon"]!)
        
        if let url = imageURL {
            cell.badgeImage.sd_setImageWithURL(url)
        }
        return cell
    }
    
    func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath)
    {
        print("You selected badge #\(indexPath.row)")
    }
}