lib/hexalixir_web/live/game_live.ex

defmodule HexalixirWeb.GameLive do
  use HexalixirWeb, :live_view
  alias Hexalixir.{Game, Grid}

  @impl true
  def mount(_params, _session, socket) do
    {:ok, assign(socket,
      grid: Grid.new(),
      saved_colors: %{1 => {nil, 6}, 2 => {nil, 6}},
      game_won: false
    )}
  end

  @impl true
  def handle_event("click_tile", %{"x" => x, "y" => y}, socket) do
    coords = {String.to_integer(x), String.to_integer(y)}

    case Game.click_tile(coords) do
      {:ok, new_grid, won} ->
        {:noreply, assign(socket, grid: new_grid, game_won: won)}

      {:error, _reason} ->
        {:noreply, socket}
    end
  end

  @impl true
  def handle_event("save_color", %{"color" => color, "slot" => slot}, socket) do
    slot = String.to_integer(slot)
    Game.save_color(color, slot)

    {:noreply, socket}
  end

  @impl true
  def handle_event("use_saved_color", %{"x" => x, "y" => y, "slot" => slot}, socket) do
    coords = {String.to_integer(x), String.to_integer(y)}
    slot = String.to_integer(slot)

    case Game.use_saved_color(coords, slot) do
      {:ok, new_grid, won} ->
        {:noreply, assign(socket, grid: new_grid, game_won: won)}

      {:error, _reason} ->
        {:noreply, socket}
    end
  end
end