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Forked from TylerPachal/with_blogpost_6.ex
Created July 25, 2022 10:48
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def join_game(user_id, game_id) do
with {:ok, user} <- Users.get(user_id),
{:ok, game} <- Games.get(game_id),
false <- Game.is_full?(game),
false <- Game.is_started?(game),
true <- User.has_permission?(user, game)
Game.add_user(game, user)
# Don't care what specific thing failed
_ -> :error
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