import java.io.*;
import java.util.Scanner;

import javax.swing.JOptionPane;

public class Main {
    public static void main(String[] args) {
        System.out.println("1. Add a new task");
        System.out.println("2. See actual tasks");
        System.out.println("3. Delete a task");
        System.out.print("Your choice: ");

        Scanner input = new Scanner(System.in);
        int choice = input.nextInt();

        if(choice==1)
        {
        try {
            File file = new File("tasks.txt");

            if(!file.exists()) {
                file.createNewFile();
            }

            System.out.print("Name of the task: ");
            Scanner nameInput = new Scanner(System.in);
            String name = nameInput.nextLine();

            System.out.print("Type of the task: ");
            Scanner typeInput = new Scanner(System.in);
            String type = typeInput.nextLine();

            System.out.print("Importance of the task(1-10): ");
            Scanner importanceInput = new Scanner(System.in);
            int importance = importanceInput.nextInt();

            System.out.print("Beggining of the task(dd-mm-yyyy): ");
            Scanner begginingInput = new Scanner(System.in);
            String beggining = begginingInput.nextLine();

            System.out.print("End of the task(dd-mm-yyyy): ");
            Scanner endInput = new Scanner(System.in);
            String end = endInput.nextLine();

            FileWriter fw = new FileWriter(file,true);

            fw.write("Name of the task: "+name+", Type of the task: "+type+", Importance of the task (1-10): "+importance+", Beggining of the task: "+beggining+", End of the task: "+end+",\n");

            fw.close();
            nameInput.close();
            input.close();
            typeInput.close();
            importanceInput.close();
            begginingInput.close();
            endInput.close();


        } catch(IOException e) {
            e.printStackTrace();
        }



        } else if(choice==2){
            BufferedReader br = null;
            try {
                br = new BufferedReader(new FileReader("tasks.txt"));
                String line;

                while((line=br.readLine()) != null)
                {
                    System.out.println(line);
                }
            } catch(IOException e) {
                e.printStackTrace();
            }
        }

        else if(choice==3) {

            String filepath = "tasks.txt";
            System.out.print("Name of the task you want to delete: ");
            Scanner deleteInput = new Scanner (System.in);
            String delete = deleteInput.nextLine();
            String removeTerm = delete;

            removeRecord(filepath,removeTerm);

        }
    }
    public static void removeRecord(String filepath,String removeTerm){
        String tempFile = "temp.txt";
        File oldFile = new File(filepath);
        File newFile = new File(tempFile);
        String name=""; String type=""; String importance=""; String beggining=""; String end="";

        try {
            FileWriter fw = new FileWriter(tempFile,true);
            BufferedWriter bw = new BufferedWriter(fw);
            PrintWriter pw = new PrintWriter(bw);

            Scanner x;
            x = new Scanner(new File(filepath));
            x.useDelimiter(",/n");

            while(x.hasNext()) {
                name = x.next();
                type = x.next();
                importance = x.next();
                beggining = x.next();
                end = x.next();
                if(!name.equals(removeTerm)){
                    pw.println("Name of the task: "+name+", Type of the task: "+type+", Importance of the task (1-10): "+importance+", Beggining of the task: "+beggining+", End of the task: "+end+",\n");
                }
            }
            x.close();
            pw.flush();
            pw.close();
            oldFile.delete();
            File dump = new File(filepath);
            newFile.renameTo(dump);
        }
        catch (Exception e) {
            JOptionPane.showMessageDialog(null,"error");
        }
    }
}