CommonUtility

import UIKit

class CommonUtility {
    class func getPortraitScreenSize() -> CGSize {
        let w = UIScreen.main.bounds.size.width
        let h = UIScreen.main.bounds.size.height
        return CGSize(width: min(w, h), height: max(w, h))
    }

    class func getLandscapeScreenSize() -> CGSize {
        let w = UIScreen.main.bounds.size.width
        let h = UIScreen.main.bounds.size.height
        return CGSize(width: max(w, h), height: min(w, h))
    }

    class func isValidEmail(email:String?) -> Bool {
        let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,}"
        let emailTest = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
        return emailTest.evaluate(with: email)
    }

    class func isValidPassword(password:String?) -> Bool {
        if let pass = password, pass.characters.count >=  0 {
            return true
        }
        return false
    }

    class func isPortrait() -> Bool {
//        return UIScreen.main.bounds.size.height == CommonUtility.getPortraitScreenSize().height
        return UIDevice.current.orientation.isPortrait
    }

    class func isIphone4or5() -> Bool {
        return UIScreen.main.bounds.size.height <= 588.0
    }

    class func subString(input: String, from: Int, to: Int) -> String {
        let start = input.index(input.startIndex, offsetBy: from)
        let end = input.index(input.startIndex, offsetBy: to)
        let range = start..<end
        return input.substring(with: range)
    }
}