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package registration;

import javafx.application.Application;
import javafx.beans.InvalidationListener;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.text.Text;
import javafx.stage.Stage;
import javax.swing.event.DocumentEvent;

public class Registration extends Application {
    boolean usernameSet;
    boolean pwSet;
    boolean emailSet;

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("Registration");
        GridPane grid = new GridPane();
        grid.setAlignment(Pos.CENTER);
        grid.setHgap(10);
        grid.setVgap(10);
        grid.setPadding(new Insets(25, 25, 25, 25));

        Text scenetitle = new Text("Welcome");
        scenetitle.setId("welcome-text");
        grid.add(scenetitle, 0, 0, 2, 1);

        Label userName = new Label("User Name:");
        grid.add(userName, 0, 1);

        TextField userTextField = new TextField();
        userTextField.setId("userName");
        grid.add(userTextField, 1, 1);


        Label pw = new Label("Password:");
        grid.add(pw, 0, 2);

        PasswordField pwBox = new PasswordField();
        pwBox.setId("password");
        grid.add(pwBox, 1, 2);

        Label eMail = new Label("E-Mail:");
        grid.add(eMail, 0, 3);

        TextField eMailField = new TextField();
        eMailField.setId("email");
        grid.add(eMailField, 1, 3);

        Button btn = new Button("Sign in");
        btn.setId("button");
        btn.setDisable(true);
        HBox hbBtn = new HBox(10);
        hbBtn.setAlignment(Pos.BOTTOM_RIGHT);
        hbBtn.getChildren().add(btn);
        grid.add(hbBtn, 1, 4);

        final Text actiontarget = new Text();
        grid.add(actiontarget, 1, 6);
        actiontarget.setId("actiontarget");



        userTextField.textProperty().addListener(new ChangeListener<String>() {
            @Override
            public void changed(final ObservableValue<? extends String> observable, final String oldValue, final String newValue) {
                if(userTextField.getText().length() >= 5)
                    usernameSet = true;
                if(userTextField.getText().length() < 5)
                    usernameSet = false;

                if(usernameSet && pwSet && emailSet)
                    btn.setDisable(false);

                if(!usernameSet || !pwSet || !emailSet)
                    btn.setDisable(true);
            }
        });

        pwBox.textProperty().addListener(new ChangeListener<String>() {
            @Override
            public void changed(final ObservableValue<? extends String> observable, final String oldValue, final String newValue) {
                if(pwBox.getText().matches("^.*[a-zA-Z].*$") && pwBox.getText().matches("^.*[^\\w\\d\\s].*$") && pwBox.getText().matches("^.*\\d.*$"))
                    pwSet = true;
                else
                    pwSet = false;

                if(usernameSet && pwSet && emailSet)
                    btn.setDisable(false);
                if(!usernameSet || !pwSet || !emailSet)
                    btn.setDisable(true);

            }
        });

        eMailField.textProperty().addListener(new ChangeListener<String>() {
            @Override
            public void changed(final ObservableValue<? extends String> observable, final String oldValue, final String newValue) {
                if(eMailField.getText().length() >= 6 && eMailField.getText().matches("^[^@]*@[^@]*\\.[^@]*$"))
                    emailSet = true;
                else
                    emailSet = false;

                if(usernameSet && pwSet && emailSet)
                    btn.setDisable(false);
                if(!usernameSet || !pwSet || !emailSet)
                    btn.setDisable(true);

            }
        });





        btn.setOnAction(new EventHandler<ActionEvent>() {

            @Override
            public void handle(ActionEvent e) {
                actiontarget.setText("Sign in button pressed");
            }
        });


        Scene scene = new Scene(grid, 300, 275);
        primaryStage.setScene(scene);
        scene.getStylesheets().add(Registration.class.getResource("Login.css").toExternalForm());
        primaryStage.show();
    }
}