Extension+String.swift

//
//  Extension+String.swift
//  100DayOfSwift
//
//  Created by Jerry Purnama Maulid on 17/06/20.
//  Copyright © 2020 Jeri Purnama. All rights reserved.
//

/*

Extension String part I
 1. Convert to html string to attribute string
 2. Check Email Validation
 3. String to Data

 */

extension String {
    // MARK: To HTML

    func convertToAttributedFromHTML() -> NSAttributedString? {
        var attributedText: NSAttributedString?
        let options: [NSAttributedString.DocumentReadingOptionKey: Any] = [.documentType: NSAttributedString.DocumentType.html, .characterEncoding: String.Encoding.utf8.rawValue]
        if let data = data(using: .unicode, allowLossyConversion: true), let attrStr = try? NSAttributedString(data: data, options: options, documentAttributes: nil) {
            attributedText = attrStr
        }
        return attributedText
    }
    

    // MARK: Check Valid Email

    func isValidEmail() -> Bool {
        let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
        let emailPred = NSPredicate(format: "SELF MATCHES %@", emailRegEx)
        return emailPred.evaluate(with: self)
    }

    // MARK: TO Data

    func toData() -> Data? {
        if let data = self.description.data(using: .utf8, allowLossyConversion: true) {
            return data
        }
        return nil
    }
}