EnumsAsString.swift

struct State {
  
  let name: String
  
  init(name: String) {
    self.name = name
  }
}

extension State: ExpressibleByStringLiteral {
  
  public init(stringLiteral value: StringLiteralType) {
    self.init(name: value)
  }
  
  public init(unicodeScalarLiteral value: String) {
    self.init(name: value)
  }
  
  public init(extendedGraphemeClusterLiteral value: String) {
    self.init(name: value)
  }
}

extension State: Hashable {
  
  var hashValue: Int {
    return name.hashValue
  }
  
  static func == (lhs: State, rhs: State) -> Bool {
    return lhs.name == rhs.name
  }
}

protocol StateRepresentable {
  var stateRepresentable: State { get }
}

// Example

enum TicketState {
  case requested
  case pending
  case completed
}

extension TicketState: StateRepresentable {
  
  var stateRepresentable: State {
    switch self {
    case .requested: return "requested_service"
    case .pending: return "pending_service"
    case .completed: return "completed_service"
    }
  }
}

let requestedState: TicketState = .requested
let pendingState: TicketState = .pending

if requestedState == pendingState {
  print("✅")
} else {
  print("❌")
}