Main SE1

package Main;

import java.io.IOException;
import java.util.Scanner;

/**
 *  Main class of this program
 *  @version 1.0.0
 *  @author Jakob Waibel, Maximilian Dolbaum, Lukas Kleinau
 */
public class Main
{
    /**
     * This is a program to store and administrate Movie and Series database entries.
     * In General, you can add new Media based on type, browse a sorted/filtered list and remove entries.
     *
     * @param args No relevant arguments to hand over at startup.
     * @throws IOException Checking if input/output operations can be executed and everything is working as intended.
     *                     Derives from clearScreen method in Helper class.
     * @throws InterruptedException Allows putting main program on hold to execute clear command.
     *                              Derives from clearScreen method in Helper class.
     */
    public static void main(String[]args) throws IOException, InterruptedException
    {
        // Declaring variables
        String  title, genre, actor, releaseYear, rating, seasons, filterChoice = null;
        // Declaring and initializing variables to store fileNames
        String fileNameMedia, fileNameMovie = "Database_Movie.txt", fileNameSeries = "Database_Series.txt";
        /*
           Movie is true if an operation concerning a movie was chosen.
           Exit is true if "exit" was chosen in the main menu and the program will be terminated.
         */
        boolean movie, exit = false;
        // Variable to store the entry which will be deleted in "remove"
        int deleteChoice;

        Helper help = new Helper();
        // Clears the screen
        help.clearScreen();

        System.out.println("Welcome dear user!");

        //Program while loop. Gets executed unless "exit" is chosen
        while(!exit)
        {
            // Resets movie if it was set to "true" in previous operations.
            movie = false;
            // Resets fileName to Series if it was set to "fileNameMovie" in previous operations.
            fileNameMedia = fileNameSeries;

            // If a filter was applied the "Active Filter" will be displayed above the main menu.
            if (filterChoice != null)
            {
                System.out.println("\033[0;97m" + "\033[42m" + "Active Filter:" + "\u001B[0m" + " " + "\u001B[32m" + filterChoice + "\u001B[0m");
            }

            // This is the main menu.
            System.out.println("-----------------------------");
            System.out.println("What will you choose to do?");
            System.out.println();
            System.out.println("0: Browse");
            System.out.println("1: Toggle Title filter");
            System.out.println("2: Add");
            System.out.println("3: Remove");
            System.out.println("4: Exit");
            System.out.println();
            System.out.print("Your choice: ");

            // Scanning "Your choice: "
            Scanner scanner = new Scanner(System.in);
            String choice = scanner.nextLine();

            // Switch to check which operation was chosen.
            // Lowercase, uppercase, normal and number entries are allowed (e.g. : browse, BROWSE, Browse ,0)
            switch (choice.toLowerCase())
            {
                case "0":
                case "browse":

                    // Asking if the user wants to browse movies or series
                    System.out.print("Browse for Movie [1] or Series [2]: ");
                    String browseChoice = scanner.nextLine();

                    help.clearScreen();

                    switch (browseChoice.toLowerCase())
                    {
                        /*
                            If movie was chosen the variable will be adjusted for movies,
                            otherwise the variables stay as initialized above in favour of series.
                            Then it will fall through. If series was chosen, this case won't be reached.
                        */
                        case "1":
                        case "movie": fileNameMedia = fileNameMovie; movie = true;
                        case "2":
                        case "series":

                            // Checks if a dataBase exists so far.
                            if (!help.checkExistence(fileNameMedia))
                            {
                                break;
                            }

                            // Adjusts output
                            if(movie)
                            {
                                System.out.println("Currently in Movie Database: ");
                            }
                            else
                            {
                                System.out.println("Currently in Series Database: ");
                            }

                            System.out.println();

                            // If no filter was applied so far the whole dataBase will be printed.
                            if (filterChoice == null)
                            {
                                System.out.println(help.loadDatabase(fileNameMedia));
                            }
                            // If a filter was applied only the matching results will be printed.
                            else
                            {
                                Media filter = new Media();
                                System.out.println(filter.filterMedia(filterChoice, fileNameMedia));
                            }

                            System.out.println();

                            break;

                        default:

                            help.clearScreen();
                            System.out.println("\033[41m" + "Faulty input:" + "\033[0m" + " Please try again.");

                    }

                    break;

                case "1":
                case "filter":

                    help.clearScreen();

                    // If a filter was applied reset it (toggle).
                    if (filterChoice != null)
                    {
                        filterChoice = null;
                        break;
                    }

                    // Otherwise you can set a new filter option
                    System.out.println("What shall the entry contain?");
                    System.out.print("Your choice: ");
                    filterChoice = scanner.nextLine();

                    help.clearScreen();

                    break;

                case "2":
                case "add":

                    // Asking if the user wants to add movies or series
                    System.out.print("Movie [1] or Series [2]: ");
                    String addChoice = scanner.nextLine();

                    help.clearScreen();

                    switch (addChoice.toLowerCase())
                    {
                        /*
                            If movie was chosen the variable will be adjusted for movies,
                            otherwise the variables stay as initialized above in favour of series.
                            Then it will fall through. If series was chosen, this case won't be reached.
                        */
                        case "1":
                        case "movie":   movie = true;
                        case "2":
                        case "series":
                            // Asking for specific information about the movie/series

                            // Adjusts output
                            if(movie)
                            {
                                System.out.print("Movie Title: ");
                            }
                            else
                            {
                                System.out.print("Series Title: ");
                            }
                            title = scanner.nextLine();

                            System.out.print("Release Year: ");
                            releaseYear = scanner.nextLine();

                            System.out.print("Genre: ");
                            genre = scanner.nextLine();

                            System.out.print("Main Actor: ");
                            actor = scanner.nextLine();

                            System.out.print("Your Personal Rating (0-10): ");
                            rating = scanner.nextLine();

                            // If a rating above 10 was entered the rating will be 10.
                            try
                            {
                                 if (Integer.parseInt(rating) >=10)
                                 {
                                     rating = "10";
                                 }
                            }
                            // If the rating was no number the rating will be 0
                            catch (NumberFormatException e)
                            {
                                rating = String.valueOf(0);
                            }

                            // Adjusting
                            if(movie)
                            {
                                // Creating object with constructor for movies
                                Media mediaMovie = new Media(title, releaseYear, genre, actor, rating);
                                // Adding the created Object to the dataBase
                                mediaMovie.addMedia(fileNameMovie);
                            }
                            else
                            {
                                // If a series is being created currently the user will be asked for an additional information.
                                System.out.print("total Seasons: ");
                                seasons = scanner.nextLine();

                                // Creating object with constructor for series
                                Media mediaSeries = new Media(title, releaseYear, genre, actor, rating, seasons);
                                // Adding the created Object to the dataBase
                                mediaSeries.addMedia(fileNameSeries);
                            }

                            help.clearScreen();

                            break;


                        default:

                            System.out.println("\033[41m" + "Faulty input:" + "\033[0m" + " Please try again.");

                    }

                    break;

                case "3":
                case "remove":

                    // Asking if the user wants to remove movies or series
                    System.out.print("Remove Movie [1] or Series [2]: ");

                    String removeChoice = scanner.nextLine();

                    help.clearScreen();


                    switch (removeChoice.toLowerCase())

                    {
                         /*
                            If movie was chosen the variable will be adjusted for movies,
                            otherwise the variables stay as initialized above in favour of series.
                            Then it will fall through. If series was chosen, this case won't be reached.
                        */
                        case "1":
                        case "movie": fileNameMedia = fileNameMovie; movie = true;
                        case "2":
                        case "series":

                            // Checking if a dataBase exists so far.
                            if (!help.checkExistence(fileNameMedia))
                            {
                                break;
                            }

                            // Adjusting output
                            if(movie)
                            {
                                System.out.println("Currently in Movie Database: ");
                            }
                            else
                            {
                                System.out.println("Currently in Series Database: ");
                            }

                            System.out.println();

                            // If no filter was applied so far the whole dataBase will be printed.
                            if (filterChoice == null)
                            {
                                System.out.println(help.loadDatabase(fileNameMedia));
                            }
                            // If a filter was applied only the matching results will be printed.
                            else
                            {
                                Media filter = new Media();
                                System.out.println(filter.filterMedia(filterChoice, fileNameMedia));
                            }

                            System.out.println();

                            // Asking for entry to delete (Index)
                            System.out.print("Index of entry to delete: ");
                            deleteChoice = scanner.nextInt();

                            // If deleteChoice exceeds the number of lines the following message appears.
                            if (deleteChoice > help.countLines(fileNameMedia))
                            {

                                help.clearScreen();
                                System.out.println("\033[41m" + "Exceeds line count in database" + "\033[0m");
                                break;
                            }
                            // If deleteChoice is smaller than zero the following message appears.
                            else if (deleteChoice < 0)
                            {

                                help.clearScreen();
                                System.out.println("\033[41m" + "Negative index not assigned" + "\033[0m");
                                break;
                            }

                            // Creating object
                            Media rmMovie = new Media();
                            // Deleting line by Index and file (movie or series)
                            rmMovie.removeMedia(deleteChoice, fileNameMedia);

                            break;

                        default:

                            System.out.println("\033[41m" + "Faulty input:" + "\033[0m" + " Please try again.");

                    }

                    break;

                case "4":
                case "exit":

                    help.clearScreen();

                    System.out.println("Good Bye! ");

                    // Program will be terminated
                    exit = true;

                    break;

                // Easter egg
                case "secret":

                    help.clearScreen();

                    System.out.println(help.surprise());

                    break;


                default:

                    System.out.println("\033[41m" + "Faulty input:" + "\033[0m" + " Please try again.");
            }
        }
    }
}