NarKampen/Assets/Scripts/Login/Login.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;

public class Login : MonoBehaviour {

    public GameObject username;
    public GameObject password;

    public Button loginButton;

    public Text errorText;

    private string Username;
    private string Password;
    private string loginUrl = "http://nordh.xyz/narKampen/dbFiles/Login.php?";

    private void Start() {
        loginButton.onClick.AddListener(loginAction);
    }

    private void Update() {
        Username = username.GetComponent<InputField>().text;
        Password = password.GetComponent<InputField>().text;
    }

    void loginAction() {
        string errorMessage = "";
        if (Username == "") {
            errorMessage = "Username is required";
        }
        if (Password == "") {
            if (errorMessage != "") {
                errorMessage += "\n";
            }
            errorMessage += "Password is required";
        }
        Color errorColor = errorText.color;
        if (errorMessage == "") {
            errorColor.a = 0;
            StartCoroutine(loginCall());
        } else {
            errorText.text = errorMessage;
            errorColor.a = 1;
        }
        errorText.color = errorColor;
    }

    IEnumerator loginCall() {
        string postUrl = loginUrl + "name=" + UnityWebRequest.EscapeURL(Username) + "&password=" + UnityWebRequest.EscapeURL(Password);

        UnityWebRequest www = UnityWebRequest.Get(postUrl);
        yield return www.SendWebRequest();

        if (www.error != null) {
            errorText.text = "There was an error logging in " + www.error;
        }
    }
}