package sample;

import apiConsumer.IApiConsumer;
import dtos.api.AuthenticateResponse;
import javafx.fxml.FXML;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.scene.input.MouseEvent;
import javafx.scene.paint.Paint;
import javafx.stage.Stage;
import sceneManager.SceneManager;
import utils.DateUtils;

import java.io.IOException;
import java.util.Date;

public class SignUpController {
    public Label lblAuthenticationStatusFailed;
    private IApiConsumer apiConsumer;

    public Label lblUsernameErr;
    public Label lblPasswordErr;
    public Label lblRepeatPasswordErr;
    public Label lblRequiredRepeatPasswordErr;
    public Label lblRequiredPasswordErr;
    public Label lblRequiredUsernameErr;
    public TextField txtUsername;
    public PasswordField txtRepeatPassword;
    public PasswordField txtPassword;
    private Scene loginScene;

    public void setApiConsumer(IApiConsumer apiConsumer){
        this.apiConsumer = apiConsumer;
    }

    public void setLoginScene(Scene loginScene) {
        this.loginScene = loginScene;
    }


    @FXML
    public void openLoginScene(MouseEvent mouseEvent) {
        cleanFields();
        Stage primaryStage = (Stage)((Node)mouseEvent.getSource()).getScene().getWindow();
        primaryStage.setScene(loginScene);
    }

    @FXML
    public void onClickBtnSignUp(MouseEvent mouseEvent) {
        if(validInput()) {
            AuthenticateResponse registerResponse = null;
            try{
                registerResponse = apiConsumer.registerUser(txtUsername.getText(), txtPassword.getText(), DateUtils.dateToUTC(new Date()));
            }
            catch (InterruptedException iex){
                //todo: handle
            }
            catch (IOException ioex){
                //todo: handle
            }
            if(registerResponse != null && registerResponse.getResponseCode() != 200){
                //todo: handle
            }

            if(registerResponse != null){
                if(registerResponse.isAuthenticated()){
                    SceneManager sceneManager = SceneManager.getInstance();
                    sceneManager.getLoginController().setLblSuccessfulSignUp();
                    openLoginScene(mouseEvent);
                }
                else{
                    if(registerResponse.isExists()) {
                        lblAuthenticationStatusFailed.setText("This username is taken. Try another one.");
                    }
                    else {
                        lblAuthenticationStatusFailed.setText(registerResponse.getInformation());
                    }
                }
            }
        }
    }

    private boolean validInput() {
        boolean validInput = true;

        //validation for username
        if(isRequiredFieldEmpty(txtUsername)) {
            lblRequiredUsernameErr.setText("This field is required");
            validInput = false;
        }
        else if(!isStringOnlyAlphabetAndDigits(txtUsername.getText())){
            lblUsernameErr.setText("Username can contain only letters, numbers or underscore.");
            lblRequiredUsernameErr.setText("");
            validInput = false;
        }
        else if(txtUsername.getText().equals("USER_ALL")) {
            lblUsernameErr.setText("Username is not allowed. Try another.");
            lblRequiredUsernameErr.setText("");
            validInput = false;
        }
        else {
            lblUsernameErr.setText("");
            lblRequiredUsernameErr.setText("");
        }

        //validation for password
        if(isRequiredFieldEmpty(txtPassword)) {
            lblRequiredPasswordErr.setText("This field is required");
            validInput = false;
        }
        else if(!isStringOnlyAlphabetAndDigits(txtPassword.getText())){
            lblPasswordErr.setText("Password can contain only letters or numbers.");
            lblRequiredPasswordErr.setText("");
            validInput = false;
        }
        else {
            lblPasswordErr.setText("");
            lblRequiredPasswordErr.setText("");
        }

        //validation for repeat password field
        if(isRequiredFieldEmpty(txtRepeatPassword)) {
            lblRequiredRepeatPasswordErr.setText("This field is required");
            validInput = false;
        }
        else if(!txtPassword.getText().equals(txtRepeatPassword.getText())) {
            lblRepeatPasswordErr.setText("Two password fields must be the same");
            lblRequiredRepeatPasswordErr.setText("");
            validInput = false;
        }
        else {
            lblRepeatPasswordErr.setText("");
            lblRequiredRepeatPasswordErr.setText("");
        }

        return validInput;
    }

    private boolean isRequiredFieldEmpty(TextField textField) {
        return textField.getText().equals("");
    }

    private boolean isStringOnlyAlphabetAndDigits(String str) {
        return str.matches("^[a-zA-Z0-9_]*$");
    }

    private void cleanFields() {
        txtUsername.setText("");
        txtPassword.setText("");
        txtRepeatPassword.setText("");
        lblUsernameErr.setText("");
        lblRequiredUsernameErr.setText("");
        lblRepeatPasswordErr.setText("");
        lblRequiredRepeatPasswordErr.setText("");
        lblPasswordErr.setText("");
        lblRequiredPasswordErr.setText("");
        lblAuthenticationStatusFailed.setText("");
    }
}