VenueViewController.swift

//
//  VenueCollectionViewController
//  Whats Next
//
//  Created by computer on 5/8/15.
//  Copyright (c) 2015 computer. All rights reserved.
//

import UIKit

class VenueViewController: UICollectionViewController {
    var venueItems: [Venue] = []
    var searchController: UISearchController!

    
    func fetchItems() {
        
        let prepItems = Venue.query()
        
        prepItems?.findObjectsInBackgroundWithBlock({ (objects:[AnyObject]?, error: NSError?) -> Void in
            self.venueItems.removeAll(keepCapacity: false)
            if (error == nil) {
                for object in objects! {
                    self.venueItems.append(object as! Venue)
                }
            } else {
                print("Error %@ %@", error, error!.userInfo)
            }
            self.collectionView?.reloadData()
        })
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // MARK: NavBar Styling
        let nav = self.navigationController?.navigationBar
        nav?.barStyle = UIBarStyle.Black
        let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 80, height: 45))
        imageView.contentMode = .ScaleAspectFill
        let image = UIImage(named: "navlogo")
        imageView.image = image
        navigationItem.titleView = imageView
        
        // Fetch Venues for VenueCollectionView
        fetchItems()
        
    }
    
    override func viewDidAppear(animated: Bool) {
        // Defaults for segueing
        
        let defaults = NSUserDefaults.standardUserDefaults()
        
        if let _ = defaults.stringForKey("nextPushed") {
            performSegueWithIdentifier("tab0", sender: self)
            } else {
            print("default reset to nil in FeedView")
        }
    }
    
    override func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
        return 1
    }
    
    
    override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return venueItems.count
    }
    
    func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexpath: NSIndexPath) -> CGSize {
        let screenWidth = CGRectGetWidth(collectionView.bounds)
        let cellWidth = screenWidth/3.0
        return CGSize(width: cellWidth, height: cellWidth)
    }
    
    
    func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout,
        minimumLineSpacingForSectionAtIndex section: Int) -> CGFloat {
            return 0
    }
    
    override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        let cell = collectionView.dequeueReusableCellWithReuseIdentifier("venueCell", forIndexPath: indexPath) as! VenueItemCell
        let currentItem = venueItems[indexPath.row]
        let imageView = PFImageView()
        imageView.image = UIImage(named: "2.png")
        imageView.file = currentItem.thumbImg
        imageView.loadInBackground { (image: UIImage?, error: NSError?) -> Void in
            cell.imageView!.image = image
            cell.imageView.contentMode = .ScaleAspectFit
        }
        return cell
    }
    
    override func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
    
        let selectNavigationController = self.storyboard?.instantiateViewControllerWithIdentifier("selectNavController") as! UINavigationController
        let selectVC = selectNavigationController.topViewController as! SelectViewController
        selectVC.currentVenue = venueItems[indexPath.row]

        presentViewController(selectNavigationController, animated: true, completion: nil)
    }
    
}