Variable change in URLSession SWIFT function?

Question

Swift

Hello! Help, save! I'm recently learning swift. I want to transfer the data request from the server to a separate class as a function. I tried many different options before asking here, but userInfo still doesn't change in the block do {
userInfo["firstName"]= responseApi.user[0].first_name
userInfo["lastName"] = responseApi.user[ 0].last_name
}
Please tell me how to do it right, if it's real at all.

var userInfo = [String:String?]
func getInfoUser (id_users: String) -> [String: String?] {
     
    /*GET INFO USER*/
        guard let url = URL(string: Shared.apiUrl + "users/user.php") else { return userInfo}
    
    let postString = "id_users=" + id_users
    var request = URLRequest(url: url)
    request.httpMethod = "POST"
    request.httpBody = postString.data(using: .utf8)
    
    URLSession.shared.dataTask(with: request) {(data, response, error) in
    guard let data = data else {return}
    
    struct responseApi : Decodable {
    var error: errorApi?
    var response: String?
    var user: [userApi]
    }
    struct errorApi: Decodable {
    var error_code: String
    var error_msg: String
    }
    
    struct userApi: Decodable {
    //var : String
    }
    
    do {
    
    let responseApi = try JSONDecoder().decode(responseApi.self, from: data)
    
    /*CHECK API ERRORS*/
    if responseApi.error != nil{
    let error = responseApi.error?.error_code
    let error_msg = FuncClass().iserror(error_code: error!)
    }
    /*END CHECK API ERRORS*/
        
        userInfo["firstName"]= responseApi.user[0].first_name
        userInfo["lastName"] = responseApi.user[0].last_name
    }
        
    catch let error {
    print("ERROR CATCH")
        print(error)
    return
    }

    }.resume()
    /*END GET INFO USER*/
        
        
        return userInfo
        
        
    }

Answer 1

Here's the story... URLSession.shared.dataTask...resume() is an asynchronous call, it is executed after getInfoUser exits: (we haven't touched the structures that copy yet). You need to do something like this:
and then:

var userInfo: [String:String?] = [:]
userInfo["firstName"]= responseApi.user[0].first_name
userInfo["lastName"] = responseApi.user[0].last_name
comepletion(userInfo)

call:

getInfoUser(id_users: "", completion: {
~code here~
})

the idea is this, I wrote without an ide, so about