static void Main(string[] args)
{
Init();// this method fills the arrays above with data
// - print the mass of the earth on July 1895 XD
/*
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*/
// QUERIES!
// - how many Songs start with the letter 'a' (case insensitive)
// - how many artists end with letter 'a' (case insensitive)
// - whats the name of the song with longest duration
// - whats the total Duration of all Songs
// - how many albums have Songs longer than 300 seconds
// - print the names of the artists(separated with "--"), that have more than one album of PopRock genre
// - print the name of the album that has highest Average duration of a song
// - how many characters has the song that has the shortest Duration
// - print the name and the genre of the album that has most songs
// - print the name of the artist that has most songs
// - print the type of the artist(SoloArtist/Band) that has most albums published before year 2000
// - print the average song duration, of the album that has most songs
// Bonus:
// - print the longest song duration of the album that has least songs
// - print the name of the album that has most songs that contain letter 'a' in the name
// - print the name of the artist that has most songs that end with letter 'd'
// ************ Don't mind the structure, focus on the lists declared on the beginning of Program.cs ****************
// 3, 2, 1.... GO! :)
Console.ForegroundColor = ConsoleColor.Green;
// 1. How many Songs start with the letter 'a' (case insensitive)
int songsWithA = Songs.Where(song => song.Name.ToLower().StartsWith('a')).Count();
Console.WriteLine($"{songsWithA} Songs start with the letter 'a'");
Console.WriteLine(new string('-', 60));
// 2. How many artists end with letter 'a'(case insensitive)
List <Artist> artistsEndWithA = Artists.Where(artist => artist.FullName.EndsWith('a')).ToList();
artistsEndWithA.ForEach(artist => Console.WriteLine($"{artist.FullName.Length} artists end with letter 'a'. "));
Console.WriteLine(new string('-', 60));
// 3. Whats the name of the song with longest duration
double longestDurationOf = Songs.Max(x => x.Duration);
var longestDurationSong = Songs
.Where(song => song.Duration == longestDurationOf)
.Select(x => new { x.Name, x.Duration })
.FirstOrDefault();
Console.WriteLine($"The name of song with longest duration is: {longestDurationSong.Name} - {longestDurationSong.Duration} duration");
Console.WriteLine(new string('-', 60));
// 4. Whats the total Duration of all Songs
double totalDurationOf = Songs.Sum(x => x.Duration);
Console.WriteLine($"Total duration of All songs is - {totalDurationOf}");
Console.WriteLine(new string('-', 60));
// 5. How many albums have Songs longer than 300 seconds
var songsLongerThan = Albums.Where(x => x.Songs.Max(x => x.Duration > 300)).Select(x => x.Name).Count();
Console.WriteLine($"{songsLongerThan} albums have Songs longer than 300 seconds.");
Console.WriteLine(new string('-', 60));
// 6. Print the names of the artists(separated with "--"), that have more than one album of PopRock genre
List <Artist> popRockArtists = Artists.Where(x => x.Albums.Max(x => x.Genre.Equals(Genre.PopRock))).ToList();
Console.WriteLine("Pop Rock Artists Name: \n");
popRockArtists.ForEach(x => Console.Write($"-- {x.FullName} \n"));
Console.WriteLine(new string('-', 60));
//7. Print the name of the album that has highest Average duration of a song
var printAlbum = Albums.OrderByDescending(x => x.Songs.Average(x => x.Duration)).First();
Console.WriteLine($"The name of the album that has highest Average duration of a song is {printAlbum.Name}.");
Console.WriteLine(new string('-', 60));
// 8. How many characters has the song that has the shortest Duration
double shortSong = Songs.Min(x => x.Duration);
var shortestDuration = Songs
.Where(song => song.Duration == shortSong)
.Select(x => x.Name)
.SingleOrDefault();
Console.WriteLine($"The Song with shortest duration have {shortestDuration.Length} characters");
Console.WriteLine(new string('-', 60));
// 9. Print the name and the genre of the album that has most songs
double mostSongs = Albums.Max(x => x.Songs.Count);
var mostSongsAlbum = Albums.Where(album => album.Songs.Count == mostSongs)
.Select(x => new { x.Name, x.Genre })
.SingleOrDefault();
Console.WriteLine($"Name and the genre of the album that has most songs is {mostSongsAlbum.Name} - {mostSongsAlbum.Genre} Genre");
Console.WriteLine(new string('-', 60));
//10. Print the name of the artist that has most songs
var songs = Albums.Max(x => x.Songs.Count);
var mostSongsArtist = Artists.Where(x => x.Albums.Max(x => x.Songs.Count == songs))
.Select(x => x.FullName)
.SingleOrDefault();
Console.WriteLine($"The name of the artist that has most songs is {mostSongsArtist}");
Console.WriteLine(new string('-', 60));
// 11. Print the type of the artist(SoloArtist/Band) that has most albums published before year 2000
var albumYear = Albums.Where(x => x.Year < 2000)
.Select(x => x.Year)
.ToList();
var printArtist = Artists.Where(x => x.Albums.Max(x => x.Name)
.Equals(albumYear))
.Select(x => x.ArtistType)
.SingleOrDefault();
Console.WriteLine($"Type of the artist that has most albums published before year 2000 is ({printArtist})");
Console.WriteLine(new string('-', 60));
// 12. Print the average song duration, of the album that has most songs
double averageSongDuration = Albums.Max(x => x.Songs.Average(x => x.Duration));
Console.WriteLine($"Average song duration of the album that has most songs is - {averageSongDuration}");
//var averageSongDuration = Albums.OrderByDescending(a => a.Songs.Count)
// .Select(a => a.Songs.Average(s => s.Duration))
// .FirstOrDefault();
//Console.WriteLine(averageSongDuration);
Console.WriteLine(new string('-', 60));
// Bonus:
//1. Print the longest song duration of the album that has least songs
double leastSongsAlbum = Albums.Min(x => x.Songs.Count());
var longestSongDuration = Albums.Where(x => x.Songs.Count == leastSongsAlbum).Select(x => x.Songs).Take(1).ToList();
longestSongDuration.ForEach(x => Console.WriteLine($"Longest song duration of two albums with the {x.Count} songs that has least song is - {x.Max(x => x.Duration)} duration, but I taked the first album."));
Console.WriteLine(new string('-', 60));
//2. Print the name of the album that has most songs that contain letter 'a' in the name
var mostSongsWithA = Albums.OrderByDescending(x => x.Songs.Sum(x => x.Name.Take('a').Count()))
.Select(x => x.Name)
.FirstOrDefault();
Console.WriteLine($"The name of the album that has most songs that contain letter 'a' in the name is {mostSongsWithA}");
Console.WriteLine(new string('-', 60));
//3. - Print the name of the artist that has most songs that end with letter 'd'
var mostSongsWithD = Artists.OrderByDescending(x => x.Albums.Count(x => x.Songs.Max(x => x.Name.EndsWith('d'))))
.Select(x => x.FullName)
.FirstOrDefault();
Console.WriteLine($"The name of the artist that has most songs that end with letter 'd' is {mostSongsWithD}");
Console.ReadLine();
}