swiftでopenAIを直接利用する方法

pod 'Alamofire'
import Alamofire
//OpenAI
struct OpenAIConfiguration {
    let apiKey: String
}
let configuration = OpenAIConfiguration(apiKey: "hage")


func generateTranslationPrompt(inputText: String) -> String {
    let promptTemplate = "xxxxxしろや。:  \(inputText)"
    return promptTemplate
}

func callText(model: String,inputText: String, completion: @escaping (String?, Error?) -> Void) {
    let prompt = generateTranslationPrompt(inputText: inputText)
    
    let messages: [[String: Any]] = [
            ["role": "system", "content": "あなたはxxxxxです。"],
            ["role": "user", "content": prompt]
        ]
        
        let parameters: [String: Any] = [
            "model": model,
            "messages": messages,
            "temperature": 0.3,
            "top_p": 1.0,
            "frequency_penalty": 0.0,
            "presence_penalty": 0.0
        ]
        
        let headers: HTTPHeaders = [
            "Authorization": "Bearer \(configuration.apiKey)"
        ]
        
    AF.request("https://api.openai.com/v1/chat/completions", method: .post, parameters: parameters, encoding: JSONEncoding.default,
               headers: headers).responseJSON { response in
            switch response.result {
            case .success(let value):
                if let jsonResponse = value as? [String: Any],
                   let choices = jsonResponse["choices"] as? [[String: Any]],
                   let firstChoice = choices.first,
                   let message = firstChoice["message"] as? [String: Any],
                   let text = message["content"] as? String {
                    completion(text, nil)
                } else {
                    completion(nil, NSError(domain: "", code: 0, userInfo: [NSLocalizedDescriptionKey: "Failed to parse response"]))
                }
            case .failure(let error):
                completion(nil, error)
            }
        }
    
}

そんで呼びたいところで使う

let orgString = "おはよう"
        callText(model: "gpt-3.5-turbo",inputText: "\(orgString)") { (convertText, error) in
            if let error = error {
                print("Error1: \(error)")
            } else if let convertText = convertText {
                print("Translated text: \(convertText)")
            }
        }