LoginViewController.swift

//
//  LoginViewController.swift
//  Xperience


import UIKit
import Foundation
import WebKit

var user = User()
var testing = false //Ensure to change to false when not testing

let username = "D@88y80153CBE86121Cpm810oxmFHGfL4R1dpk^wGSPqnuP1aIxIL" //Header: username
let password = "t4aksmjdt74a9g" //Header: password

class LoginScreen: UIViewController, UITextFieldDelegate, WKNavigationDelegate {

    @IBOutlet weak var username_box: UITextField!
    @IBOutlet weak var password_box: UITextField!
    @IBOutlet weak var submit_button: UIButton!
    @IBOutlet weak var webView: WKWebView!
    
    var results = ""
    var request = URLRequest(url: URL(string: "http://xperience.app.unaux.com/scripts/service.php")!)
    
    @IBAction func sumbit(_ sender: UIButton) {
        let User = username_box.text
        let Pass = password_box.text
        
        submit_button.isEnabled = false
        
        
        let dbname = "unaux_22219628_users" //Header: dbname
        
        let query = "SELECT * FROM `users` WHERE `username` = '{1}' AND `password` = '{2}';"
        let one = "\(User ?? "")"
        let two = "\(Pass ?? "")"
        let post_preparer = Postify()
        let post = post_preparer.prepare(["username" : username,
                                          "password" : password,
                                          "dbname" : dbname,
                                          "q" : query,
                                          "1" : one,
                                          "2" : two])
        
        let post_data = post.data(using: String.Encoding.ascii , allowLossyConversion: true)!
        self.request.httpMethod = "POST"
        self.request.httpBody = post_data as Data
        webView.load(request)

        
    }
    
    func webView(_ webView: WKWebView,
                 didFinish navigation: WKNavigation!) {
        print("Loaded")
        webView.evaluateJavaScript("document.getElementsByTagName('p')[0].innerHTML.toString()",
                                   completionHandler: { (html: Any?, error: Error?) in
                                    if html == nil {
                                        print("Sorry, html was nil.");
                                        webView.load(self.request);
                                    } else {
                                        self.results = html as! String;
                                        //print("Results = \(String(describing: self.results))")
                                        self.try_login();
                                    }
                                    
        })}
    
    func try_login() {
        if self.results != "\" \"" && self.results != "[]" {
            let JsonParser = JSONParse()
            user.name = JsonParser.parseJSON(self.results.data(using: String.Encoding.utf8)!)[0].value(forKey: "first_name") as! String
            self.performSegue(withIdentifier: "Transition", sender: self)
        }
        
        else {
            submit_button.isEnabled = true
        }
    }
    
    override func viewDidLoad() {
        self.submit_button.layer.cornerRadius = 10.0

        super.viewDidLoad()
        self.username_box.delegate = self;
        self.password_box.delegate = self;
        self.webView.navigationDelegate = self
        
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }
    
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        self.view.endEditing(true)
        return false
    }

    
}