import kotlin.random.Random

class Musikverwaltung
{
    private val songs = arrayListOf<Song>()

    fun addSong(song : Song)
    {
        songs.add(song)
    }

    fun suche(begriff : String) : Song?
    {
        for (i in songs)
        {
            if (i.titel.contains(begriff) || i.interpret.contains(begriff))
                return i
        }

        return null
    }

    fun besterSong() : Song
    {
        var best = songs[0]
        for (i in songs)
        {
            if (i.bewertung > best.bewertung)
                best = i
        }

        return best
    }

    fun randomPlaylist() : Playlist
    {
        val newPlaylist = arrayListOf<Song>()
        val size = Random.nextInt(songs.size)

        for (i in 0..size)
        {
            newPlaylist.add(songs[Random.nextInt(songs.size)])
        }

        return Playlist(newPlaylist)
    }
}