來加一個遊戲狀態好了

本來是要弄回合時間限制
但發現怎樣算開始呢？
集滿兩勝好像也還沒有說誰獲勝了。

建立遊戲之後，正常的進行遊戲的話，依照順序會有

1. 等待guest
2. 進行中
3. host獲勝 / guest獲勝

等等 等待guest 應該不是核心遊戲這層的，在這邊應該只會有兩個

1. 進行中
2. host獲勝 / guest獲勝

status 可能會有 :start, :host_win, :guest_win

來把它加進初始 Game struct

  defstruct host: %{desk: [], hand: initial_hand, wins: 0},
            guest: %{desk: [], hand: initial_hand, wins: 0},
            turn: 1,
            round: 1,
            status: :start

檢查勝利

檢查勝利的時間點，好像又只能放在出牌後，感覺太多東西在那邊了，
沒關係，先放，有想到更好的再改
應該是接在 |> end_round 後面，來做一個方法檢查有沒有人 wins: 2

  def handle_cast({:play_card, player, card}, game) do
    game =
      game
      |> play_card_for(player, card)
      |> end_turn()
      |> add_wins()
      |> end_round()
      |> end_game()

    {:noreply, game}
  end

end_game 方法跟前幾個比單純很多

  defp end_game(%{guest: %{wins: 2}} = game), do: Map.replace game, :status, :guest_win
  defp end_game(%{host: %{wins: 2}} = game), do: Map.replace game, :status, :host_win
  defp end_game(game), do: game

來做一個假的後期遊戲來測

  def start_late_game do
    late_game = %Game{
      guest: %{wins: 1, desk: [3, 2, 1, 3, 2], hand: [1]},
      host: %{wins: 1, desk: [6, 3, 3, 5, 2], hand: [2]},
      turn: 3,
      round: 2
    }

    GenServer.start_link(__MODULE__, late_game)
  end

iex(1)> import Game
Game
iex(2)> {:ok, pid} = start_late_game
{:ok, #PID<0.113.0>}
iex(3)> status pid
%Game{
  guest: %{desk: [3, 2, 1, 3, 2], hand: [1], wins: 1},
  host: %{desk: [6, 3, 3, 5, 2], hand: [2], wins: 1},
  round: 2,
  status: :start,
  turn: 3
}
iex(4)> play_card pid, :guest, 1
:ok
iex(5)> play_card pid, :host, 2 
:ok
iex(6)> status pid              
%Game{
  guest: %{desk: [3, 2, 1, 3, 2, 1], hand: [], wins: 1},
  host: %{desk: [6, 3, 3, 5, 2, 2], hand: [], wins: 2},
  round: 3,
  status: :host_win,
  turn: 1
}

狀態變成獲勝了

明天看要來弄每回合出牌限時
還是修一下就算手上沒有要出的牌，也可以出的情況