jMDB.java

/*
  Author: Jacob Gallucci
  E-mail: jag6248@psu.edu
  Course: CMPSC 221
  Assignment: Programming Assignment 2 - Movie Database - Main
  Due date: 2/27/2018
  File: jMDB.java
  Purpose: Driver for jMDB movie database:  Gives the user the ability to view the different movies in the Database
           Also contains ... Sorting Methods, Searching method to search the database, Display methods to display the movie list
                             setup database method and getInput methods
  Compiler/IDE: OpenJDK 1.8.0_151 (compiled from CLI) - Atom / Vim text editors
  Operating system: Debian Stretch 9
  Reference(s):
                I had a bubble sort program from HACC I referenced to get the alphabettical sort
                https://docs.oracle.com/javase/tutorial/essential/exceptions/throwing.html - Reference for exceptions
*/
import java.io.*;
import java.util.*;

public class jMDB
{
  public static void main(String[] args)
  {
    awardMovie[] movies = new awardMovie[10];   // Array of awardMovies
    Scanner keyboard = new Scanner(System.in); // Scanner for user input
    String sortTypeInput;
    int sortType;     // Input (1 or 2) for how the user wishes to sort the movie titles
    int choice = -1; // Loop controller
    char search;    // Yes or no if the user wants to search the database
    char goAgain;  // Yes or no if the user wants to do another search / view an element of the DB

    for (int i = 0; i < 10; i++) // Initializing the array
      movies[i] = new awardMovie();

    setupMovies(movies);  // Calls function that reads data from a text file to input into the array's objects
    System.out.println("Welcome to jMDB! Jacob Gallucci's knock off Movie Database!\n");
    do
    {
      System.out.println("How would you like to sort the Award Winning Movies?\n 1: By Title (alphabetically)\n 2: By Genre (alphabetically)\n");
      System.out.print("Input an option from above: ");
      try
      {
        sortTypeInput = keyboard.nextLine();
        sortType = Integer.parseInt(sortTypeInput);
      }
      catch(NumberFormatException ex)
      {
        System.out.println("Error Please enter an Integer!");
        sortType = -1;
      }
    }while((sortType != 1) & (sortType != 2));

    if (sortType == 0)
      sortAlphaTitle(movies);   // Sorts list alphabetically
    else
      sortAlphaGenre(movies);

    do // Go Again Loop - Loops while the user wants to remain in the program
    {
      displayTitles(movies, sortType); // Displays menu of movies

      do // Search Loop - Loops while the user wants to search the database
      {
        System.out.print("Would you like to search the database?(Y/N): ");
        search = getSearchInput(keyboard); // Gets search Yes or No

        if (Character.toUpperCase(search) == 'Y') // if the user wants to search the database
        {
          searchDB(movies, keyboard); // Searches the database
          displayTitles(movies, sortType);  // Displays list of movies again
        }
      }while(Character.toUpperCase(search) == 'Y');

      choice = getInput(keyboard); // User enters their movie of choice to learn more about

      System.out.println(movies[(choice - 1)]); // Prints information about the movie

      System.out.print("Would you like to go again?(Y/N): ");
      goAgain = getSearchInput(keyboard); // Gets user input whether they want to go again

    }while(Character.toUpperCase(goAgain) == 'Y');
    System.out.println("Thank you for using jMDB!");

    System.exit(0); // end program
  }

//////////////////////////////////////////////////////////////////////////METHODS////////////////////////////////////////////////
  private static awardMovie[] setupMovies(awardMovie[] list) // Sets up movie array
  {
    String dummyString; // String used for input
    int i = 0; // Loop controller
    int dummyInt; // String used to convert input to an integer
    try
    {
      FileReader reader = new FileReader("movies.txt");     // Sets up file reader
      BufferedReader buffReader = new BufferedReader(reader); // Sets up buffer reader

      // this loop inputs data from file into awardString object while there is data in the file or integer i is less than 10
      /*
       * NOTE: If the text file is in the incorrect format this will result in an incorrect format (ie. Director could be the title of the movie)
      */
      while (((dummyString = buffReader.readLine()) != null) || (i < 10))
      {
        list[i].setTitle(dummyString);
        dummyString = buffReader.readLine();
        list[i].setRating(dummyString);
        dummyString = buffReader.readLine();
        list[i].setGenre(dummyString);
        dummyString = buffReader.readLine();
        list[i].setDirector(dummyString);
        dummyString = buffReader.readLine();
        list[i].setStar(dummyString);
        dummyString = buffReader.readLine();
        list[i].setAwardTitle(dummyString);
        dummyInt = Integer.parseInt(buffReader.readLine());
        list[i].setAwardYear(dummyInt);
        i++;
      }
    }
    // If the file is not found
    catch(FileNotFoundException ex)
    {
      System.out.println("File not found!");
    }
    // If the file is broken
    catch(IOException ex)
    {
      System.out.println("File Broken! Pls Fix!");
    }
    return list; // Returns setup array to the main
  }
  // Uses a bubble sort to sort titles alphabettically from #->Z
  public static awardMovie[] sortAlphaTitle(awardMovie[] list)
  {
    awardMovie temp = new awardMovie(); // Temporary awardMovie object used to swap
    for (int i = 0; i < 9; i++)
    {
      for (int j = 0; j < (8 - i); j++)
      {
        if (((list[j].getTitle()).compareToIgnoreCase((list[j+1].getTitle()))) > 0)
        {
          temp = list[j];
          list[j] = list[j+1];
          list[j+1] = temp;
        }
      }
    }
    return list; // Returns sorted list to the main
  }
  // Uses bubble sort to sort genres alphabetically if genres are the same, it sorts it by title alphabetically
  public static awardMovie[] sortAlphaGenre(awardMovie[] list)
  {
    awardMovie temp = new awardMovie(); // Temporary awardMovie object used to swap
    for (int i = 0; i < 9; i++)
    {
      for (int j = 0; j < (8 - i); j++)
      {
        if (((list[j].getGenre()).compareToIgnoreCase((list[j+1].getGenre()))) > 0)
        {
          temp = list[j];
          list[j] = list[j+1];
          list[j+1] = temp;
        }
        else if (((list[j].getGenre()).compareToIgnoreCase((list[j+1].getGenre()))) == 0)
        {
          if (((list[j].getTitle()).compareToIgnoreCase((list[j+1].getTitle()))) > 0)
          {
            temp = list[j];
            list[j] = list[j+1];
            list[j+1] = temp;
          }
        }
      }
    }
    return list; // Returns sorted list to the main
  }

  // Displays titles of the movies depending on how the user chooses they wish to see the movies
  public static void displayTitles(awardMovie[] list, int type)
  {
    if (type == 1) // if user wants the movies alphabetically by title
    {
      for (int i = 0; i < 10; i++)
        System.out.println((i + 1) + ": " + list[i].getTitle());
    }
    else // if the user wants the movies alphabetically by genre
    {
      for (int i = 0; i < 10; i++)
        System.out.println((i + 1) + ": [" + list[i].getGenre() + "] " + list[i].getTitle());
    }

    return;
  }

  // Gets user input as it relates to the movie the user wants to view
  public static int getInput(Scanner key)
  {
    String input; // user input
    int selection = -1; // user input converted to integer
    System.out.print("\nEnter the number that corrisponds to the movie you wish to view in detail: ");
    do // Loops while the user's input is not between 1 and 10
    {
      input = key.nextLine();
      try
      {
        selection = Integer.parseInt(input);
      }
      catch (NumberFormatException e) // if the user does not input an integer
      {
        System.out.println("Please enter an integer!");
        selection = -1;
      }

      if ((selection < 1) | (selection > 10)) // if the user input is outside the range prsent them with an error message
        System.out.print("Please input a number from 1 to 10: ");

    }while(!(selection > 0) | !(selection < 11));

    return selection; // returns the user input
  }

  // Search again method
  public static char getSearchInput(Scanner keyboard)
  {
    char search; // Character for user input
    do // Loops while user input != Y or N
    {
      search = (keyboard.nextLine()).charAt(0);

      if ((Character.toUpperCase(search) != 'Y') && (Character.toUpperCase(search) != 'N'))
        System.out.println("Please enter Y or N!");

    }while((Character.toUpperCase(search) != 'Y') & (Character.toUpperCase(search) != 'N'));

    return search; // returns user input to main
  }

  // Search Function - Searches database based on user's desired search element
  public static void searchDB(awardMovie[] list, Scanner key)
  {
    String input; // user input
    int selection = -1; // Users choice what characteristic of the movie they would like to search by
    int yearOfAward; // used to convert user input to an integer

    System.out.println("\n\nWhat characteristic would you like to search the database by?:");
    System.out.println("1) Title");
    System.out.println("2) Director");
    System.out.println("3) Star of the Movie");
    System.out.println("4) Rating");
    System.out.println("5) Genre");
    System.out.println("6) Year award was given");
    System.out.println("7) Name of the Award");
    System.out.print("\nInput Choice: ");

    do // Loops while user's input is not in the range of 1-7
    {
      input = key.nextLine();
      try
      {
        selection = Integer.parseInt(input);
      }
      catch (NumberFormatException e) // if what is inputted is not an integer
      {
        System.out.print("Please enter an integer!: ");
        selection = -1;
      }

      if ((selection < 1) | (selection > 7))
        System.out.println("Please input a number from 1 to 10");

    }while(!(selection > 0) | !(selection < 8));

    // If the user wants to search by title
    if (selection == 1)
    {
      System.out.print("Enter the Title you wish to search for: ");
      input = key.nextLine();
      System.out.println("The following movies satisfy your search: \n");

      for (int i = 0; i < 10; i++)
      {
        if ((list[i].getTitle().equalsIgnoreCase(input)))
          System.out.println(list[i].getTitle());
      }
    }
    // If the user wants to search by Director
    else if (selection == 2)
    {
      System.out.print("Enter the Director you wish to search for: ");
      input = key.nextLine();
      System.out.println("The following movies satisfy your search: \n");

      for (int i = 0; i < 10; i++)
      {
        if ((list[i].getDirector().equalsIgnoreCase(input)))
          System.out.println(list[i].getTitle());
      }
    }
    // If the user wants to search by Star
    else if (selection == 3)
    {
      System.out.print("Enter the Star you wish to search for: ");
      input = key.nextLine();
      System.out.println("The following movies satisfy your search: \n");

      for (int i = 0; i < 10; i++)
      {
        if ((list[i].getStar().equalsIgnoreCase(input)))
          System.out.println(list[i].getTitle());
      }
    }
    // If the user wants to search by rating
    else if (selection == 4)
    {
      System.out.print("Enter the Rating you wish to search for: ");
      input = key.nextLine();
      System.out.println("The following movies satisfy your search: \n");

      for (int i = 0; i < 10; i++)
      {
        if ((list[i].getRating().equalsIgnoreCase(input)))
          System.out.println(list[i].getTitle());
      }
    }
    // if the user wants to search by genre
    else if (selection == 5)
    {
      System.out.print("Enter the Genre you wish to search for: ");
      input = key.nextLine();
      System.out.println("The following movies satisfy your search: \n");

      for (int i = 0; i < 10; i++)
      {
        if ((list[i].getGenre().equalsIgnoreCase(input)))
          System.out.println(list[i].getTitle());
      }
    }
    // if the user wants to search by year an award was given
    else if (selection == 6)
    {
      System.out.print("Enter the Year of Award you wish to search for: ");
      do
      {
        input = key.nextLine();
        try
        {
          yearOfAward = Integer.parseInt(input);
        }
        catch (NumberFormatException e) // if the user does not input a year in the form of an integer
        {
          System.out.println("Please enter a year in number format!");
          yearOfAward = 0;
        }
      }while(!(yearOfAward != 0));
      System.out.println("The following movies satisfy your search: \n");

      for (int i = 0; i < 10; i++)
      {
        if ((list[i].getAwardYear()) == yearOfAward)
          System.out.println(list[i].getTitle());
      }
    }
    // if the user wants to search Award Title
    else if (selection == 7)
    {
      System.out.print("Enter the Award Title you wish to search for: ");
      input = key.nextLine();
      System.out.println("The following movies satisfy your search: \n");

      for (int i = 0; i < 10; i++)
      {
        if ((list[i].getAwardTitle().equalsIgnoreCase(input)))
          System.out.println(list[i].getTitle());
      }
    }
    System.out.print("\n");

  }
}