{

public abstract class Program

{

static void Main(string [] args)

{

Console.WriteLine("1) List All Books");

Console.WriteLine("2) List All Movies");

Console.WriteLine("3) List All Songs");

Console.WriteLine("4) List All Media");

Console.WriteLine("5) Search by title");

Console.WriteLine("6) Exit");

int choice = int.Parse(Console.ReadLine());

Media[] readervar = ReadData(choice);

}

private static Media[] ReadData(int choice)

{

List<Media> result = new List<Media>(); // The final result that will be returned

// Validate if there is a valid textfile in the specific directory and checks if the content of the file is valid

try

{

// Initialize variables

string file = @"Data.txt"; // The path and name of the file string line;

// the current line of the stream

StreamReader reader = new StreamReader(file); // Used for reading the file

// Reads file until the end of the stream

while (!reader.EndOfStream)

{

// Initialize variables that will be used for reading data, and will reset every time a new line is read

List<string> summary = new List<string>();

string line = reader.ReadLine();

string[] splitLine = line.Split('|');

// Makes sure the data being read is actually data, not a separator

if (!line.Equals("-----"))

{

// Check the type of media, and if it is the selected option by the user, then add it to the list of media that will be displayed

if (splitLine[0].ToUpper() == "BOOK" && (choice == 4 || choice == 1))

{

// Reads multiple lines of summary, until the next separator

while (!(line = reader.ReadLine()).Equals("-----")) { summary.Add(line); }

result.Add(new Book(splitLine[3], Convert.ToInt32(splitLine[2]) , splitLine[1], String.Join(' ', summary)));

foreach (var Book in result)

{

Console.WriteLine(Book.ToString());

}

}

else if (splitLine[0].ToUpper() == "SONG" && (choice == 4 || choice == 3))

{

// Reads multiple lines of summary, until the next separator

while (!(line = reader.ReadLine()).Equals("-----")) { summary.Add(line); }

result.Add(new Song(splitLine[3], Convert.ToInt32(splitLine[2]) , splitLine[1], String.Join(' ', summary)));

foreach (var Song in result)

{

Console.WriteLine(Song.ToString());

}

}

else if (splitLine[0].ToUpper() == "MOVIE" && (choice == 4 || choice == 2))

{

// Reads multiple lines of summary, until the next separator

while (!(line = reader.ReadLine()).Equals("-----")) { summary.Add(line); }

result.Add(new Movie(splitLine[3],Convert.ToInt32(splitLine[2]), splitLine[1], String.Join(' ', summary)));

foreach (var Movie in result)

{

Console.WriteLine(Movie.ToString());

}

}

else if (choice == 6) {

}

}

}

// Make the search case insensitive by treating strings as lowercase

// Didn't find it

}

catch (Exception ex)

{

}

return result.ToArray();

}

}