live_beats/lib/live_beats/media_library.ex

defmodule LiveBeats.MediaLibrary do
  @moduledoc """
  The MediaLibrary context.
  """

  import Ecto.Query, warn: false
  alias LiveBeats.Repo

  alias LiveBeats.MediaLibrary.{Song, Genre}

  def create_genre(attrs \\ %{}) do
    %Genre{}
    |> Genre.changeset(attrs)
    |> Repo.insert()
  end

  def list_genres do
    Repo.all(Genre, order_by: [asc: :title])
  end

  def list_songs do
    Repo.all(Song)
  end

  def get_song!(id), do: Repo.get!(Song, id)

  def create_song(attrs \\ %{}) do
    %Song{}
    |> Song.changeset(attrs)
    |> Repo.insert()
  end

  def update_song(%Song{} = song, attrs) do
    song
    |> Song.changeset(attrs)
    |> Repo.update()
  end

  def delete_song(%Song{} = song) do
    Repo.delete(song)
  end

  def change_song(%Song{} = song, attrs \\ %{}) do
    Song.changeset(song, attrs)
  end
end