//
//  ExploreCollectionReusableView.swift
//  librx
//
//  Created by Yunlong Zheng on 15/9/6.
//  Copyright (c) 2015年 librx. All rights reserved.
//

import UIKit
import SDWebImage

class ExploreCollectionViewController: UICollectionViewController, UICollectionViewDelegateFlowLayout {

    private var screenSize: CGRect!
    private var screenWidth: CGFloat!
    private var screenHeight: CGFloat!
    
    private var explores: [Explore] = []
    
    private var loginAction :LoginAction?
    private var loginStateChange: LoginStateHandler?

    private var searchController:UISearchController!
    
    private var colors: [String] = ["#FB7F5A", "#1276EF", "#525C89", "#FED51D"]
    
    weak var delegate: ExploreCollectionViewController?
    
    override func viewDidLoad() {
        
        super.viewDidLoad()
        self.navigationController?.navigationBar.tintColor = UIColor.whiteColor()
        self.navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.whiteColor()]
        
        self.navigationController?.navigationBar.backgroundColor = UIColor.clearColor()
        
        screenSize = UIScreen.mainScreen().bounds
        screenWidth = screenSize.width
        screenHeight = screenSize.height
       
    }
    
    override func viewDidAppear(animated: Bool) {
        
        super.viewDidAppear(animated)
        
        self.navigationController?.navigationBarHidden = false
        self.navigationController?.setNavigationBarHidden(false, animated: false)
        
        LibrxService.loadExplore { (explores) -> () in
            self.explores = explores
            self.collectionView?.reloadData()
        }
        
    }
    
    override func prefersStatusBarHidden() -> Bool {
        return false
    }
    
    override func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
        return 1
    }
    
    override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return explores.count
    }

    func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAtIndex section: Int) -> UIEdgeInsets {
        return UIEdgeInsetsMake(15, 15, 15, 15);
    }
    
    func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
        //return CGSizeMake(150.0, 100.0);
        return CGSize(width: screenWidth/2-20, height: screenWidth/2-20);
    }
    
    override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        
        let cell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as! ExploreCell
        
        // mark cell content
        let explore: Explore = explores[indexPath.row]
        cell.nameLabel.text = "\(explore.name)"
        cell.nameLabel.textColor = UIColor.whiteColor()
        cell.nameLabel.lineBreakMode = NSLineBreakMode.ByWordWrapping
        cell.nameLabel.numberOfLines = 2
        
        cell.iconImage.subviews.forEach({ $0.removeFromSuperview() })
        cell.iconImage.sd_setImageWithURL(NSURL(string: explore.iconUrl), placeholderImage: UIImage(named:"AppIcon"))

        let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.Dark)
        let blurEffectView = UIVisualEffectView(effect: blurEffect)
        blurEffectView.frame = cell.iconImage.bounds
        blurEffectView.alpha = 0.6
        
        cell.iconImage.addSubview(blurEffectView)
        
        
        cell.backgroundColor = UIColor(hexString: self.colors[indexPath.row])
        cell.layer.cornerRadius = 1
        cell.clipsToBounds = true
        
        return cell
    
    }
    
    func dismiss() {
        dismissViewControllerAnimated(true, completion: nil)
    }
    
    override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        
        if segue.identifier == "showExploreSegue" {
            
            if let indexPaths = self.collectionView?.indexPathsForSelectedItems() {
                
                let selectedExplore = self.explores[indexPaths[0].row]
                let destinationController = segue.destinationViewController as! ExploreTableViewController
                destinationController.title = selectedExplore.name
                print("\(selectedExplore.resourceUrl)")
                destinationController.dataUrl = selectedExplore.resourceUrl
            
            }
            
            
        }
        
    }
    
}