Use next player name in Discord notifications (#850)

Fixes #739

app/channels/game_channel.rb

@@ -78,11 +78,20 @@ def receive(data)
             .perform_later(next_player.id, game.id)
         end
         # Send Discord notification
+        current_player_identifier = next_player_name
         current_player_discord_id = next_player&.discord_id
-        if current_player_discord_id.present? && ENV["RAILS_ENV"] == "production"
+        if current_player_discord_id
+          current_player_identifier = "<@#{current_player_discord_id}>"
+        end
+        if ENV["RAILS_ENV"] == "production"
           puts "Preparing to send notifyNextPlayer Discord notification"
           DiscordTurnNotificationJob.set(wait: 5.minutes)
-            .perform_later(current_player_discord_id, next_player.id, game.id, game.name)
+            .perform_later(
+              current_player_identifier,
+              next_player.id,
+              game.id,
+              game.name
+            )
         end
 
         game.last_move.update(player_notified_at: Time.now)

app/jobs/discord_turn_notification_job.rb

@@ -1,7 +1,7 @@
 class DiscordTurnNotificationJob < ApplicationJob
   queue_as :default
 
-  def perform(player_discord_id, player_id, game_id, game_name)
+  def perform(player_identifier, player_id, game_id, game_name)
     player = User.find(player_id)
     game = Game.find(game_id)
     if game.current_player == player
@@ -10,7 +10,7 @@ def perform(player_discord_id, player_id, game_id, game_name)
         Net::HTTP.post(
           uri,
           {
-            content: "<@#{player_discord_id}> it is your turn!",
+            content: "#{player_identifier} it is your turn!",
             allowed_mentions: {parse: ["users"]},
             embeds: [
               title: game_name,
@@ -25,7 +25,7 @@ def perform(player_discord_id, player_id, game_id, game_name)
         Net::HTTP.post(
           uri,
           {
-            content: "<@#{player_discord_id}> it is your turn!",
+            content: "#{player_identifier} it is your turn!",
             allowed_mentions: {parse: ["users"]},
             embeds: [
               title: game_name,