Sources/Tea/Extensions.swift

import Foundation

extension String {
    private static let randomDict = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"

    func toBytes() -> [UInt8] {
        [UInt8](self.utf8)
    }

    func jsonDecode() -> [String: AnyObject] {
        let jsonData: Data = self.data(using: .utf8)!
        guard let data = try? JSONSerialization.jsonObject(with: jsonData, options: .mutableContainers) as? [String: AnyObject] else {
            return [String: AnyObject]()
        }
        return data
    }

    func urlEncode() -> String {
        let unreserved = "*-._"
        let allowedCharacterSet = NSMutableCharacterSet.alphanumeric()
        allowedCharacterSet.addCharacters(in: unreserved)
        allowedCharacterSet.addCharacters(in: " ")
        var encoded = addingPercentEncoding(withAllowedCharacters: allowedCharacterSet as CharacterSet)
        encoded = encoded?.replacingOccurrences(of: " ", with: "%20")
        return encoded ?? ""
    }

    func isNumber() -> Bool {
        !isEmpty && rangeOfCharacter(from: CharacterSet.decimalDigits.inverted) == nil
    }
}