//
//  Utils.swift
//  OAuthSwift
//
//  Created by Dongri Jin on 1/28/15.
//  Copyright (c) 2015 Dongri Jin. All rights reserved.
//

import Foundation

public func generateState(withLength len: Int) -> String {
    let letters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
    let length = UInt32(letters.count)

    var randomString = ""
    for _ in 0..<len {
        let rand = arc4random_uniform(length)
        let idx = letters.index(letters.startIndex, offsetBy: Int(rand))
        let letter = letters[idx]
        randomString += String(letter)
    }
    return randomString
}