package com.example.vpr_javafx;

import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.control.Alert;
import javafx.scene.control.ListView;
import javafx.scene.control.PasswordField;
import javafx.scene.control.TextField;
import org.w3c.dom.Text;

import java.awt.*;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.*;

/**
 * Data is a class to edit files.
 *
 * @author Madeleine Vigier
 * @version 1.3
 */
public class Data {
    private String pathRead;


    public Data(String pathRead) {
        this.pathRead = pathRead;
    }

    /**
     * @author Kevin Pfannenstiel
     * @return
     */
    public HashMap<String, String> readLoginData()
    {
        try {
            List<String> lines = Files.readAllLines(Paths.get(pathRead));

            HashMap<String, String> user = new HashMap<>();

            for (int i = 0; i < lines.size(); i++)
            {
                String[] parts = lines.get(i).split(";");

                String phoneNumber = parts[3];
                String password = parts[5];

                user.put(phoneNumber, password);
            }

            return user;

        } catch (IOException e) {
            e.printStackTrace();
            return new HashMap<>();
        }
    }
    /**
     * readUser() is a method to split user.txt into lines and save them in an arraylist
     *
     * @return Arraylist userList
     * @author Madeleine Vigier, Sabine Gubitz
     *
     */
    public ArrayList<com.example.vpr_javafx.User> readUser() {
        List<String> rows = getRows();
        ArrayList<com.example.vpr_javafx.User> userList = new ArrayList<>();

        for (String row : rows) {
            String[] parts = row.split(";");

            String nameParent1 = parts[0];
            String nameParent2 = parts[1];
            String billAddress = parts[2];
            String phonenumber = parts[3];
            String nameChildren = parts[4];
            String password = parts[5];
            userList.add(new com.example.vpr_javafx.User(nameParent1, nameParent2, billAddress, phonenumber, nameChildren, password));
        }
        return userList;

    }


    /**
     * readMenue() is a method to split menue.txt into lines and save them in an arraylist
     *
     * @return Arraylist menuelist
     * @author Madeleine Vigier, Sabine Gubitz
     */
    public ArrayList<com.example.vpr_javafx.Menu> readMenu() {

        List<String> rows = getRows();
        ArrayList<com.example.vpr_javafx.Menu> menuList = new ArrayList<>();


        for (String row : rows) {

            String[] parts = row.split(";");


            String date = parts[0];
            String dish = parts[1];
            String sideDish = parts[2];
            String typ = parts[3];
            String ingredient = parts[4];

            List<String> ingredients = new ArrayList<>();

            if (!ingredient.isEmpty()) {
                ingredients.add("a"); //eggs
            }

            ingredient = parts[5];
            if (!ingredient.isEmpty()) {
                ingredients.add("d"); //peanuts
            }
            ingredient = parts[6];
            if (!ingredient.isEmpty()) {
                ingredients.add("m"); //fish
            }
            ingredient = parts[7];
            if (!ingredient.isEmpty()) {
                ingredients.add("g"); //grains
            }
            ingredient = parts[8];
            if (!ingredient.isEmpty()) {
                ingredients.add("f"); //crustaceans
            }
            ingredient = parts[9];
            if (!ingredient.isEmpty()) {
                ingredients.add("n"); //lupines
            }
            ingredient = parts[10];
            if (!ingredient.isEmpty()) {
                ingredients.add("c"); //milk
            }
            ingredient = parts[11];
            if (!ingredient.isEmpty()) {
                ingredients.add("k"); //nuts
            }
            ingredient = parts[12];
            if (!ingredient.isEmpty()) {
                ingredients.add("j"); //sulfurDioxideAndSulfite
            }
            ingredient = parts[13];

            if (!ingredient.isEmpty()) {
                ingredients.add("l"); //celeriac
            }
            ingredient = parts[14];
            if (!ingredient.isEmpty()) {
                ingredients.add("h"); //mustards
            }
            ingredient = parts[15];
            if (!ingredient.isEmpty()) {
                ingredients.add("i"); //sesame
            }
            ingredient = parts[16];
            if (!ingredient.isEmpty()) {
                ingredients.add("b");//soy
            }
            ingredient = parts[17];
            if (!ingredient.isEmpty()) {
                ingredients.add("e");//molluscs
            }
            ingredient = parts[18];
            if (!ingredient.isEmpty()) {
                ingredients.add("4"); //antioxidant
            }
            ingredient = parts[19];
            if (!ingredient.isEmpty()) {
                ingredients.add("5");
            }
            ingredient = parts[20];
            if (!ingredient.isEmpty()) {
                ingredients.add("6"); //flavourEnhancer
            }
            ingredient = parts[21];
            if (!ingredient.isEmpty()) {
                ingredients.add("8"); // preservatives
            }
            ingredient = parts[22];

            if (!ingredient.isEmpty()) {
                ingredients.add("3"); //nitrate
            }
            ingredient = parts[23];
            if (!ingredient.isEmpty()) {
                ingredients.add("1");//picklingSalt
            }
            ingredient = parts[24];
            if (!ingredient.isEmpty()) {
                ingredients.add("7"); //artificialSweetener
            }
            ingredient = parts[25];
            if (!ingredient.isEmpty()) {
                ingredients.add("2"); //phosphate

            }
            String end = parts[26]; //endpoint

            menuList.add(new com.example.vpr_javafx.Menu(date, dish, sideDish, typ, ingredients));
        }
        return menuList;
    }


    /**
     * readOrder() is a method to split order.txt into lines and save them in an arraylist
     *
     * @return Arraylist orderlist
     * @author Madeleine Vigier, Sabine Gubitz
     */
    public ArrayList<com.example.vpr_javafx.Order> readOrder() {

        ArrayList<com.example.vpr_javafx.Order> orderList = new ArrayList<>();
        List<String> rows = getRows();

        for (String row : rows) {
            String[] parts = row.split(";");

            String date = parts[0];
            String user = parts[1];
            String mealtype = parts[3];
            String deserttype = parts[5];
            orderList.add(new com.example.vpr_javafx.Order(date, user, mealtype, deserttype));
        }
        return null;//orderList

    }

    /**
     * The method writeData writes the data of a List into a txt file.
     *
     * @author Felix Wöstemeyer
     *
     * @param pathWrite   determines the filename of the file that will be written
     * @param listToWrite determines which ArrayList is to be used for writing the file
     */
    public void writeData(String pathWrite, ArrayList<String> listToWrite) {
        try {
            if (new File(pathWrite).exists()) {
                for (String zeile : listToWrite) {
                    new FileWriter(pathWrite).write(zeile);
                }
            }else
            {
                Scanner scanner = new Scanner(System.in);
                System.out.println("Der Pfad oder die  Datei "+ pathWrite +" existiert nicht!\nMöchten Sie unter dem Pfad "+ pathWrite+ " eine neue Datei erstellen? (Y/N)");
                if(scanner.nextLine().equals("Y")){
                    new File(pathWrite).createNewFile();
                    System.out.println("Die Datei "+ pathWrite+" wurde erfolgreich erstellt");
                }else if(!scanner.nextLine().equals("N") && !scanner.nextLine().equals("Y")){
                    System.out.println("Es ist ein Fehler mit ihrer Antwort aufgetreten!");
                }
            }
        }catch(IOException e){
            e.printStackTrace();
        }
    }

    /**
     * The method gets the rows by reading all lines of the path
     *
     * @return ArrayList rows
     * @author Madeleine Vigier
     */
    private List<String> getRows() {
        Path path = Paths.get(pathRead);
        List<String> rows = new ArrayList<>();
        try {
            rows = Files.readAllLines(path);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return rows;
    }

    /**
     * The method validates the user input
     *
     * @param tfPhone       Phone number the user typed in
     * @param pfPassword    Password the user typed in
     * @param controller    Controller
     * @return              phoneNumberValid && passwordValid
     * @author              Kevin Maier, Kevin Pfannenstiel
     */
    public boolean validateData(TextField tfPhone, PasswordField pfPassword, HelloController controller)
    {
        boolean phoneNumberMatchFound;
        boolean passwordMatchFound;
        boolean phoneNumberValid = false;
        boolean passwordValid = false;

        Alert alert = new Alert(Alert.AlertType.WARNING);

        HashMap<String, String> users = readLoginData();

        String phoneNumber = tfPhone.getText();
        String password = pfPassword.getText();

        Pattern phoneNumberPattern = Pattern.compile("[0-9]*");
        Pattern passwordPattern = Pattern.compile("^(?=.*[A-Za-z])(?=.*\\d)[A-Za-z\\d]{8,}$");

        if (password.isEmpty() || phoneNumber.isEmpty())
        {
            alert.setContentText("Login fehlgeschlagen. Anmeldedaten unvollständig.");
            alert.show();
        }

        Matcher phoneNumberMatcher = phoneNumberPattern.matcher(phoneNumber);
        Matcher passwordMatcher = passwordPattern.matcher(password);

        phoneNumberMatchFound = phoneNumberMatcher.find();
        passwordMatchFound = passwordMatcher.find();

        if (!users.containsKey(phoneNumber) || !phoneNumberMatchFound || phoneNumber.length() >= 15)
        {
            alert.setContentText("Login fehlgeschlagen. Die eingegebenen Daten sind falsch.");
            alert.show();
        }
        else
        {
            phoneNumberValid = true;
        }

        if (!users.get(phoneNumber).equals(password) || !passwordMatchFound)
        {
            alert.setContentText("Login fehlgeschlagen. Die eingegebenen Daten sind falsch.");
            alert.show();
        }
        else
        {
            passwordValid = true;
            controller.setRadioButton();
        }

        return phoneNumberValid && passwordValid;
    }

    /**
     *
     * @param tfPhone
     * @param pfPassword
     * @param controller
     * @author Kevin Maier
     */
    public boolean validateRegistration(TextField tfName, TextField tfPhone, PasswordField pfPassword, TextField tfStreet, TextField tfHouseNumber, TextField tfPostalCode, TextField tfCity, TextField tfChild, HelloController controller)
    {
        boolean phoneNumberMatchFound;
        boolean passwordMatchFound;
        boolean postalCodeFound;
        boolean phoneNumberValid = false;
        boolean passwordValid = false;
        boolean postalCodeValid = false;

        Alert alert = new Alert(Alert.AlertType.WARNING);

        HashMap<String, String> users = readLoginData();

        String phoneNumber = tfPhone.getText();
        String password = pfPassword.getText();
        String postalCode = tfPostalCode.getText();

        Pattern phoneNumberPattern = Pattern.compile("[0-9]*");
        Pattern passwordPattern = Pattern.compile("^(?=.*[A-Za-z])(?=.*\\d)[A-Za-z\\d]{8,}$");
        Pattern postalCodePattern = Pattern.compile("[0-9]{5}");

        if (tfName.getText().isEmpty() || tfPhone.getText().isEmpty() || pfPassword.getText().isEmpty() || tfStreet.getText().isEmpty() || tfHouseNumber.getText().isEmpty() || tfPostalCode.getText().isEmpty() || tfCity.getText().isEmpty() || tfChild.getText().isEmpty())
        {
            alert.setContentText("Registrierung fehlgeschlagen. Registrierungsdaten unvollständig.");
            alert.show();
        }

        Matcher phoneNumberMatcher = phoneNumberPattern.matcher(phoneNumber);
        Matcher passwordMatcher = passwordPattern.matcher(password);
        Matcher postalCodeMatcher = postalCodePattern.matcher(postalCode);

        phoneNumberMatchFound = phoneNumberMatcher.find();
        passwordMatchFound = passwordMatcher.find();
        postalCodeFound = postalCodeMatcher.find();

        if (users.containsKey(phoneNumber) || !phoneNumberMatchFound || phoneNumber.length() >= 15)
        {
            alert.setContentText("Registrierung fehlgeschlagen. Die eingegebenen Telefonnummer ist bereits vergeben oder ist nicht korrekt.");
            alert.show();
        }
        else
        {
            phoneNumberValid = true;
        }
        if (!passwordMatchFound)
        {
            alert.setContentText("Registrierung fehlgeschlagen. Das Passwort muss mindestens 8 Zeichen lang sein und mindestens 1 Ziffer und 1 Zeichen beinhalten.");
            alert.show();
        }
        else
        {
            passwordValid = true;
        }
        if (!postalCodeFound)
        {
            alert.setContentText("Registrierung fehlgeschlagen. Die Postleitzahl ist nicht richtig.");
        }
        else
        {
            postalCodeValid = true;
        }

        return phoneNumberValid && passwordValid && postalCodeValid;
    }


    /**
     * The method changes the orders.txt file by removing canceled orders
     *
     * @return ArrayList\<Order> changedOrderList
     * @author Felix Düsterhaus
     */

    public ArrayList<com.example.vpr_javafx.Order> changeOrder(String userLogin, ListView<String> ListViewDelete) {
        ArrayList<String> chosenMeals = new ArrayList<>();
        ObservableList<String> chosenMealsObservable = FXCollections.observableList(chosenMeals);
        ArrayList<com.example.vpr_javafx.Order> changedOrderList = new ArrayList<>();
        List<String> rows = getRows();
        int changedEntries = 0;

        //ImageIcon icon = new ImageIcon("file:target/classes/com/example/vpr_javafx/pics/vegetarisch.png");
        UIManager.put("OptionPane.noButtonText", "Nein");
        UIManager.put("OptionPane.yesButtonText", "Ja");
        int result = JOptionPane.showInternalConfirmDialog(null, "Bestellungen wirklich Löschen?", "Bestätigung", JOptionPane.YES_NO_OPTION);
        ListViewDelete.getSelectionModel().getSelectedItems();
        if (result == JOptionPane.YES_OPTION) {
            for (String row : rows) {
                String[] parts = row.split(";");

                String date = parts[0];
                String user = parts[1];
                String mealtyp = parts[2];
                String deserttyp = parts[3];
                if(!userLogin.equals(user)) {
                    changedOrderList.add(new com.example.vpr_javafx.Order(date, user, mealtyp, deserttyp));
                } else {
                    changedEntries++;
                }
            }
            try {
                FileWriter writer = new FileWriter("orders2.txt");
                for(com.example.vpr_javafx.Order str: changedOrderList) {
                    writer.write(str + System.lineSeparator());
                }
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            JOptionPane.showMessageDialog(null, changedEntries + " Bestellungen Gelöscht, Sie können eine neue Bestellung aufgeben");
        } else {
            JOptionPane.showMessageDialog(null, "Bestellung nicht gelöscht.");
        }
        return changedOrderList;
    }
}