YPHelper.swift

//
//  YPHelper.swift
//  YPImgePicker
//
//  Created by Sacha Durand Saint Omer on 02/11/16.
//  Copyright © 2016 Yummypets. All rights reserved.
//

import Foundation
import UIKit
import Photos

internal func ypLocalized(_ str: String) -> String {
    return NSLocalizedString(str,
                             tableName: nil,
                             bundle: Bundle(for: YPPickerVC.self),
                             value: "",
                             comment: "")
}

internal func imageFromBundle(_ named: String) -> UIImage {
    return UIImage(named: named, in: Bundle(for: YPPickerVC.self), compatibleWith: nil) ?? UIImage()
}

struct YPHelper {
    static func changeBackButtonIcon(_ controller: UIViewController) {
        if YPConfig.icons.shouldChangeDefaultBackButtonIcon {
            let backButtonIcon = YPConfig.icons.backButtonIcon
            controller.navigationController?.navigationBar.backIndicatorImage = backButtonIcon
            controller.navigationController?.navigationBar.backIndicatorTransitionMaskImage = backButtonIcon
        }
    }
    
    static func changeBackButtonTitle(_ controller: UIViewController) {
        if YPConfig.icons.hideBackButtonTitle {
            controller.navigationItem.backBarButtonItem = UIBarButtonItem(title: "",
                                                                          style: .plain,
                                                                          target: nil,
                                                                          action: nil)
        }
    }
    
    static func configureFocusView(_ v: UIView) {
        v.alpha = 0.0
        v.backgroundColor = UIColor.clear
        v.layer.borderColor = UIColor(r: 204, g: 204, b: 204).cgColor
        v.layer.borderWidth = 1.0
        v.transform = CGAffineTransform(scaleX: 1.0, y: 1.0)
    }
    
    static func animateFocusView(_ v: UIView) {
        UIView.animate(withDuration: 0.8, delay: 0.0, usingSpringWithDamping: 0.8,
                       initialSpringVelocity: 3.0, options: UIViewAnimationOptions.curveEaseIn,
                       animations: {
                        v.alpha = 1.0
                        v.transform = CGAffineTransform(scaleX: 0.7, y: 0.7)
        }, completion: { _ in
            v.transform = CGAffineTransform(scaleX: 1.0, y: 1.0)
            v.removeFromSuperview()
        })
    }
    
    static func formattedStrigFrom(_ timeInterval: TimeInterval) -> String {
        let interval = Int(timeInterval)
        let seconds = interval % 60
        let minutes = (interval / 60) % 60
        return String(format: "%02d:%02d", minutes, seconds)
    }
    
    public static func unwrapImageMetaAssets(asset : PHAsset) -> [String : Any]?{
        let imageRequestOptions = PHImageRequestOptions()
        imageRequestOptions.isSynchronous = true
        
        var returnValue = [String : Any]()
        
        PHImageManager.default().requestImageData(for: asset, options: imageRequestOptions) { (data, dataUTI, orientation, info) in
            
            returnValue = self.metadataForImageData(data: data!)
        }
        
        return returnValue
    }
    
    private static func metadataForImageData(data : Data) -> [String : Any]{
        let imageSource = CGImageSourceCreateWithData(data as CFData, nil)
        
        let imageProperties = CGImageSourceCopyPropertiesAtIndex(imageSource!, 0, nil)
        
        return imageProperties! as! [String : Any]
        
    }
}