feat: add wheel price endpoint

lib/safira_web/controllers/roulette_controller.ex

@@ -6,6 +6,8 @@ defmodule SafiraWeb.RouletteController do
 
   action_fallback SafiraWeb.FallbackController
 
+  @price Application.compile_env!(:safira, :roulette_cost)
+
   def spin(conn, _params) do
     attendee = Accounts.get_user(conn) |> Map.fetch!(:attendee)
 
@@ -30,4 +32,8 @@ defmodule SafiraWeb.RouletteController do
     latest_prizes = Roulette.latest_five_wins()
     render(conn, "latest_prizes.json", latest_prizes: latest_prizes)
   end
+
+  def price(conn, _params) do
+    render(conn, "price.json", price: @price)
+  end
 end

lib/safira_web/router.ex

@@ -53,6 +53,7 @@ defmodule SafiraWeb.Router do
     get "/leaderboard", LeaderboardController, :index
     get "/leaderboard/:date", LeaderboardController, :daily
     get "/roulette/latestwins", RouletteController, :latest_wins
+    get "/roulette/price", RouletteController, :price
     get "/store/redeem/:id", DeliverRedeemableController, :show
     get "/roulette/redeem/:id", DeliverPrizeController, :show
 

lib/safira_web/views/roulette_view.ex

@@ -30,6 +30,10 @@ defmodule SafiraWeb.RouletteView do
     resp
   end
 
+  def render("price.json", %{price: price}) do
+    %{price: price}
+  end
+
   def render("latest_prizes.json", %{latest_prizes: latest_prizes}) do
     %{data: render_many(latest_prizes, SafiraWeb.RouletteView, "latest_prize_show.json")}
   end