Add balancer dropdown

lib/teiserver/battle/libs/balance_lib.ex

@@ -57,6 +57,10 @@ defmodule Teiserver.Battle.BalanceLib do
     }
   end
 
+  def get_algorithm_names() do
+    Map.keys(algorithm_modules())
+  end
+
   @doc """
   Teifion only allowed force_party to be used by mods because it led to noob-stomping unbalanced teams
   """
@@ -181,16 +185,6 @@ defmodule Teiserver.Battle.BalanceLib do
     |> Map.put(:time_taken, System.system_time(:microsecond) - start_time)
   end
 
-  def is_valid_algorithm?(algo_name) do
-    case algorithm_modules()[algo_name] do
-      nil ->
-        false
-
-      _ ->
-        true
-    end
-  end
-
   @doc """
   Sometimes groups have missing data so we need to refetch it.
   If we go through balancer_server then all the required data should be there

lib/teiserver_web/live/battles/match/show.ex

@@ -11,31 +11,24 @@ defmodule TeiserverWeb.Battle.MatchLive.Show do
       |> assign(:site_menu_active, "match")
       |> assign(:view_colour, Teiserver.Battle.MatchLib.colours())
       |> assign(:tab, "details")
+      |> assign(
+        :balancer_options,
+        BalanceLib.get_algorithm_names()
+      )
+      |> assign(:balancer, BalanceLib.get_default_algorithm())
 
     {:ok, socket}
   end
 
   @impl true
-  def handle_params(params, _url, socket) do
-    id = Map.get(params, "id")
-    default_balancer = BalanceLib.get_default_algorithm()
-    balancer = Map.get(params, "balancer", default_balancer)
-
-    if(!BalanceLib.is_valid_algorithm?(balancer)) do
-      {:noreply,
-       socket
-       |> put_flash(:error, "#{balancer} is not a valid balancer")
-       |> push_patch(to: "/battle/#{id}/balance/#{default_balancer}")}
-    else
-      socket =
-        socket
-        |> assign(:id, String.to_integer(id))
-        |> assign(:balancer, balancer)
-        |> get_match()
-        |> assign(:tab, socket.assigns.live_action)
-
-      {:noreply, apply_action(socket, socket.assigns.live_action, params)}
-    end
+  def handle_params(%{"id" => id} = params, _url, socket) do
+    socket =
+      socket
+      |> assign(:id, String.to_integer(id))
+      |> get_match()
+      |> assign(:tab, socket.assigns.live_action)
+
+    {:noreply, apply_action(socket, socket.assigns.live_action, params)}
   end
 
   defp apply_action(%{assigns: %{match_name: match_name}} = socket, :overview, _params) do
@@ -195,7 +188,6 @@ defmodule TeiserverWeb.Battle.MatchLive.Show do
       |> assign(:new_balance, new_balance)
       |> assign(:events_by_type, events_by_type)
       |> assign(:events_by_team_and_type, events_by_team_and_type)
-      |> assign(:balancer, balancer)
     else
       socket
       |> assign(:match, nil)
@@ -207,7 +199,6 @@ defmodule TeiserverWeb.Battle.MatchLive.Show do
       |> assign(:new_balance, %{})
       |> assign(:events_by_type, %{})
       |> assign(:events_by_team_and_type, %{})
-      |> assign(:balancer, balancer)
     end
   end
 
@@ -240,4 +231,18 @@ defmodule TeiserverWeb.Battle.MatchLive.Show do
     BalanceLib.create_balance(groups, match.team_count, algorithm: balancer)
     |> Map.put(:balance_mode, :grouped)
   end
+
+  @doc """
+  Handles the dropdown for balancer changing
+  """
+  @impl true
+  def handle_event("update-balancer", event, socket) do
+    [key] = event["_target"]
+    value = event[key]
+
+    {:noreply,
+     socket
+     |> assign(:balancer, value)
+     |> get_match()}
+  end
 end

lib/teiserver_web/live/battles/match/show.html.heex

@@ -42,7 +42,7 @@
       <% end %>
 
       <%= if @rating_logs != %{} and allow?(@current_user, "Overwatch") do %>
-        <.tab_nav url={~p"/battle/#{@match.id}/balance/loser_picks"} selected={@tab == :balance}>
+        <.tab_nav url={~p"/battle/#{@match.id}/balance"} selected={@tab == :balance}>
           <Fontawesome.icon icon="fa-solid fa-scale-balanced" style="solid" /> Balance
         </.tab_nav>
       <% end %>
@@ -284,7 +284,18 @@
 
     <%= if allow?(@current_user, "Overwatch") do %>
       <div :if={@tab == :balance} class="p-4">
-        <p>Balancer: <%= @balancer %></p>
+         <form method="post" class="">
+           <.input
+            type="select"
+            label="Balancer"
+            options={@balancer_options}
+            name="balancer"
+            value={@balancer}
+            phx-change="update-balancer"
+           />
+          </form>
+        <br />
+
         <h4>Based on data at the time</h4>
 
         <table class="table">