SafariKeychainManager.swift

//
//  SafariKeychainManager.swift
//  UltraMotivator
//
//  Created by Shehryar Hussain on 04/15/16.
//  Copyright (c) 2014 Shehryar Hussain. All rights reserved.
//

import Foundation

@objc class SafariKeychainManager: NSObject {
    
    @objc class func checkSafariCredentialsWithCompletion(completion: ((error: NSError?, username: String?, password: String?) -> Void)) {
        
        let domain: CFString = "classpass.com"
        
        SecRequestSharedWebCredential(domain, .None, {
            (credentials: CFArray?, error: CFError?) -> Void in
            
            if let error = error {
                print("error: \(error)")
                completion(error: error as NSError, username: nil, password: nil)
            } else if CFArrayGetCount(credentials) > 0 {
                
                let dict = unsafeBitCast(CFArrayGetValueAtIndex(credentials, 0), CFDictionaryRef.self) as NSDictionary
                let username = dict[kSecAttrAccount as String] as! String
                let password = dict[kSecSharedPassword as String] as! String
            
                dispatch_async(dispatch_get_main_queue()) {
                    completion(error: nil, username: username, password: password)
                }
            } else {
                dispatch_async(dispatch_get_main_queue()) {
                    completion(error:nil, username: nil, password: nil)
                }
            }
        });
    }
    
   @objc class func updateSafariCredentials(username: String, password: String) {
        
        let domain: CFString = "classpass.com"
    
        SecAddSharedWebCredential(domain,
                                  username as CFString,
                                  password.characters.count > 0 ? password as CFString : .None,
                                  {(error: CFError?) -> Void in
                                    print("error: \(error)")
        });
    }
}