From d68a85bbc54272273c6c5219a80ad2d0b9b6bc57 Mon Sep 17 00:00:00 2001
From: gamer147 <gamer147@gmail.com>
Date: Fri, 29 May 2026 14:23:50 -0400
Subject: [PATCH] refactor(battlepass): route premium-buy crystal spend through
 CurrencySpendService

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .../Services/BattlePassService.cs                     | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/SVSim.EmulatedEntrypoint/Services/BattlePassService.cs b/SVSim.EmulatedEntrypoint/Services/BattlePassService.cs
index 0a10e66..2a07fcc 100644
--- a/SVSim.EmulatedEntrypoint/Services/BattlePassService.cs
+++ b/SVSim.EmulatedEntrypoint/Services/BattlePassService.cs
@@ -23,19 +23,22 @@ public sealed class BattlePassService : IBattlePassService
     private readonly TimeProvider _time;
     private readonly SVSimDbContext _db;
     private readonly RewardGrantService _rewards;
+    private readonly ICurrencySpendService _spend;
 
     public BattlePassService(
         IBattlePassRepository bp,
         IViewerBattlePassRepository viewerBp,
         TimeProvider time,
         SVSimDbContext db,
-        RewardGrantService rewards)
+        RewardGrantService rewards,
+        ICurrencySpendService spend)
     {
         _bp = bp;
         _viewerBp = viewerBp;
         _time = time;
         _db = db;
         _rewards = rewards;
+        _spend = spend;
     }
 
     public async Task<IReadOnlyDictionary<string, BattlePassLevel>?> GetLevelCurveAsync(CancellationToken ct)
@@ -166,13 +169,13 @@ public sealed class BattlePassService : IBattlePassService
         if (progress.IsPremium)
             return new BattlePassBuyOutcome(23, Array.Empty<GrantedReward>(), Array.Empty<GrantedReward>());
 
-        if (viewer.Currency.Crystals < (ulong)season.PriceCrystal)
+        var spendResult = await _spend.TrySpendAsync(viewer, SpendCurrency.Crystal, season.PriceCrystal, ct);
+        if (!spendResult.Success)
             return new BattlePassBuyOutcome(22, Array.Empty<GrantedReward>(), Array.Empty<GrantedReward>());
 
         // BeginTransactionAsync is a no-op on the SQLite in-memory test DB but is safe to call.
         await using var tx = await _db.Database.BeginTransactionAsync(ct);
 
-        viewer.Currency.Crystals -= (ulong)season.PriceCrystal;
         progress.IsPremium = true;
 
         // Retroactive grants: every premium reward at level <= current_level not already claimed.
@@ -206,7 +209,7 @@ public sealed class BattlePassService : IBattlePassService
         // append the post-deduction total so the client gets the correct final balance.
         postState.RemoveAll(r => r.RewardType == (int)UserGoodsType.Crystal);
         postState.Add(new GrantedReward(
-            (int)UserGoodsType.Crystal, 0, (int)viewer.Currency.Crystals));
+            (int)UserGoodsType.Crystal, 0, (int)spendResult.PostStateTotal));
 
         return new BattlePassBuyOutcome(1, achieved, postState);
     }