Example #1
0
        //overloaded Print() function to print LINQ matches
        public void Print(KeyValuePair <string, Song> match)
        {
            SongDuration newDuration = SongDuration.ConvertDuration(match.Value.Duration);

            Console.WriteLine("title: {0}, artist: {1}, songwriter: {2}, year: {3}, duration: {4}",
                              match.Value.Title, match.Value.Singer, match.Value.SongWriter, match.Value.Year, newDuration.ToString());
        }
Example #2
0
        //Displays song data on console for all current dictionary entries.
        public void Print(Dictionary <string, Song> songs)
        {
            foreach (KeyValuePair <string, Song> song in songs)
            {
                SongDuration newDuration = SongDuration.ConvertDuration(song.Value.Duration);

                Console.WriteLine("title: {0}, artist: {1}, songwriter: {2}, year: {3}, duration: {4}",
                                  song.Value.Title, song.Value.Singer, song.Value.SongWriter, song.Value.Year, newDuration.ToString());
            }
        }
Example #3
0
        static void Main(string[] args)
        {
            Dictionary <string, Song> songs   = new Dictionary <string, Song>();
            DictionaryHandler         handler = new DictionaryHandler();

            //Sets up TextInfo to allow conversion ToTitleCase
            TextInfo textinfo = new CultureInfo("en-US", false).TextInfo;

            Console.SetWindowSize(150, 32);

            CreateSongs();
            handler.Print(songs);
            PromptMenu();
            Console.WriteLine();

            Console.ReadLine();

            //Initializes the original song data for the dictionary of Song objects.
            void CreateSongs()
            {
                Song song1 = new Song("Narcolepsy", "Ben Folds Five", "Ben Folds", 1999, 324); // 5:24

                songs.Add(song1.Title, song1);

                Song song2 = new Song("Catalyst", "Kyla la Grange", "Kyla La Grange", 2012, 246); // 4:06

                songs.Add(song2.Title, song2);

                Song song3 = new Song("Take Me To Church", "Hozier", "Andrew Hozier-Byrne", 2014, 242); // 4:02

                songs.Add(song3.Title, song3);

                Song song4 = new Song("Family", "Dry The River", "Peter Liddle", 2011, 280); // 4:40

                songs.Add(song4.Title, song4);

                Song song5 = new Song("Obedear", "Purity Ring", "Megan James", 2012, 210); // 3:30

                songs.Add(song5.Title, song5);

                Song song6 = new Song("We're All Thieves", "Circa Survive", "Anthony Green", 2005, 294); // 4:54

                songs.Add(song6.Title, song6);

                Song song7 = new Song("Blue Lips", "Regina Spektor", "Regina Spektor", 2009, 212); // 3:32

                songs.Add(song7.Title, song7);

                Song song8 = new Song("Jungle", "Tash Sultana", "Tash Sultana", 2017, 316); // 5:16

                songs.Add(song8.Title, song8);

                Song song9 = new Song("Young", "Vallis Alps", "Parissa Tosif", 2015, 324); // 5:24

                songs.Add(song9.Title, song9);

                Song song10 = new Song("One More Cup Of Coffee", "Frazey Ford", "Bob Dylan", 2010, 259); // 4:19

                songs.Add(song10.Title, song10);
            }

            //Handle user key input for menu selection.
            int MenuHandler(ConsoleKey keypress)
            {
                switch (keypress)
                {
                case ConsoleKey.D1:
                    return(1);

                case ConsoleKey.D2:
                    return(2);

                case ConsoleKey.D3:
                    return(3);

                case ConsoleKey.D4:
                    return(4);

                case ConsoleKey.D5:
                    return(5);

                case ConsoleKey.D6:
                    return(6);

                case ConsoleKey.D7:
                    return(7);

                case ConsoleKey.D8:
                    return(8);

                case ConsoleKey.D9:
                    return(9);

                case ConsoleKey.D0:
                    return(0);

                default:
                    Console.WriteLine("Invalid entry, try again.");
                    return(11);
                }
            }

            //Display menu options on console, run methods per user input. Return to menu afterwards.
            void PromptMenu()
            {
                Console.WriteLine();
                Console.WriteLine("Select an action by pressing a corresponding key." + Environment.NewLine +
                                  "1. Display all saved song data on screen." + Environment.NewLine +
                                  "2. Delete saved song data by title." + Environment.NewLine +
                                  "3. Search specific saved song data by title." + Environment.NewLine +
                                  "4. Display all saved song data on screen, by title (ascending)." + Environment.NewLine +
                                  "5. Display all saved song data on screen, by year (ascending)." + Environment.NewLine +
                                  "6. Display a range of song data on screen, by duration (ascending)." + Environment.NewLine +
                                  "7. Display all saved song data on screen, by year (descending)." + Environment.NewLine +
                                  "8. Run song duration comparison demos (one equal, one unequal comparison)." + Environment.NewLine +
                                  "9. Run song duration addition demo." + Environment.NewLine +
                                  "0. Run song duration subtraction demo.");

                Console.WriteLine();

                switch (MenuHandler(Console.ReadKey(true).Key))
                {
                case (1):
                    handler.Print(songs);

                    PromptMenu();
                    break;

                case (2):

                    Console.WriteLine("Type a song title below and hit enter to delete.");
                    handler.DeleteByTitle(songs, Console.ReadLine());

                    PromptMenu();
                    break;

                case (3):

                    Console.WriteLine("Type a song title below and hit enter to search.");
                    handler.GetSongByTitle(songs, Console.ReadLine());

                    PromptMenu();
                    break;

                case (4):

                    handler.PrintByTitle(songs);

                    PromptMenu();
                    break;

                case (5):

                    handler.PrintByYear(songs);

                    PromptMenu();
                    break;


                case (6):

                    Console.WriteLine("Type a minimum song duration in minutes below and hit enter.");
                    int min = (Convert.ToInt32(Console.ReadLine()) * 60);
                    Console.WriteLine("Now, type a maximum song duration in minutes below and hit enter.");
                    int max = (Convert.ToInt32(Console.ReadLine()) * 60);
                    handler.PrintByDuration(songs, min, max);

                    PromptMenu();
                    break;


                case (7):


                    handler.PrintByYearDesc(songs);

                    PromptMenu();
                    break;

                case (8):

                    DurationComparison(songs["Narcolepsy"], songs["Young"]);
                    DurationComparison(songs["Blue Lips"], songs["Family"]);

                    PromptMenu();
                    break;


                case (9):

                    CombineDurations(songs["Narcolepsy"], songs["Young"]);

                    PromptMenu();
                    break;


                case (0):

                    SubtractDurations(songs["Blue Lips"], songs["Family"]);

                    PromptMenu();
                    break;

                case (11):

                    PromptMenu();
                    break;
                }
                Console.WriteLine();
                Console.ReadLine();
            }

            //Compares two song durations using '==', '!=', '<', '>', '>=' and '<='.
            //Prints statements that are 'true' to demonstrate results.
            void DurationComparison(Song s1, Song s2)
            {
                SongDuration s1Duration = SongDuration.ConvertDuration(s1.Duration);
                SongDuration s2Duration = SongDuration.ConvertDuration(s2.Duration);

                Console.WriteLine("True statements:");
                Console.WriteLine();
                try
                {
                    if (s1Duration == s2Duration)
                    {
                        Console.WriteLine("Songs are the same length!");
                    }
                    else if (s1Duration != s2Duration)
                    {
                        Console.WriteLine("Songs are NOT the same length!");
                        if (s1Duration < s2Duration)
                        {
                            Console.WriteLine("Song 1 is shorter than song 2.");
                        }
                        if (s1Duration <= s2Duration)
                        {
                            Console.WriteLine("Song 1 is shorter than or equal to song 2.");
                        }
                        if (s1Duration > s2Duration)
                        {
                            Console.WriteLine("Song 1 is longer than song 2.");
                        }
                        if (s1Duration >= s2Duration)
                        {
                            Console.WriteLine("Song 1 is longer than or equal to song 2.");
                        }
                    }

                    else
                    {
                        throw new Exception("Could not compare those two song durations, check input and try again.");
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.Message);
                }
            }

            //Adds two song duration. Prints the combined duration.
            void CombineDurations(Song s1, Song s2)
            {
                SongDuration newDuration = SongDuration.ConvertDuration(s1.Duration + s2.Duration);

                Console.WriteLine("Combined play time for songs '{0}' and '{1}' is: {2}"
                                  , s1.Title, s2.Title, newDuration.ToString());
            }

            //Subtracts two song durations. Prints the duration difference (positive or negative)
            void SubtractDurations(Song s1, Song s2)
            {
                SongDuration newDuration = SongDuration.ConvertDuration(s1.Duration - s2.Duration);

                //tests for negative values
                if (newDuration.negative == false)
                {
                    Console.WriteLine("'{0}' is longer than '{1}' by: {2}"
                                      , s1.Title, s2.Title, newDuration.ToString());
                }
                else if (newDuration.negative == true)
                {
                    Console.WriteLine("'{0}' is shorter than '{1}' by: {2}"
                                      , s1.Title, s2.Title, newDuration.ToString());
                }
                else
                {
                    Console.WriteLine("Songs are the same length!");
                }
            }
        }