Added lossback and also found some issues with rakeback

KfChatDotNetBot/Commands/KasinoUserCommands.cs

@@ -134,15 +134,15 @@ public class RakebackCommand : ICommand
             offset = mostRecentRakeback.TimeUnixEpochSeconds;
         }
 
-        var wagers = db.Wagers.Where(w => w.Gambler == gambler && w.TimeUnixEpochSeconds > offset);
-        if (!await wagers.AnyAsync(ctx))
+        var wagers = await db.Wagers.Where(w => w.Gambler == gambler && w.TimeUnixEpochSeconds > offset).ToListAsync(ctx);
+        if (wagers.Count == 0)
         {
             await botInstance.SendChatMessageAsync(
                 $"@{user.KfUsername}, you haven't wagered since your last rakeback.", true);
             return;
         }
 
-        var wagered = await wagers.SumAsync(w => w.WagerAmount, ctx);
+        var wagered = wagers.Sum(w => w.WagerAmount);
         var rakeback = wagered * (decimal)(settings[BuiltIn.Keys.MoneyRakebackPercentage].ToType<float>() / 100.0);
         var minimumRakeback = settings[BuiltIn.Keys.MoneyRakebackMinimumAmount].ToType<decimal>();
         if (rakeback < minimumRakeback)
@@ -152,5 +152,54 @@ public class RakebackCommand : ICommand
         }
         await gambler!.ModifyBalance(rakeback, TransactionSourceEventType.Rakeback, "Rakeback claimed by gambler",
             ct: ctx);
+        await botInstance.SendChatMessageAsync($"@{user.KfUsername}, the hostess has given you {await rakeback.FormatKasinoCurrencyAsync()} rakeback", true);
+    }
+}
+
+[KasinoCommand]
+public class LossbackCommand : ICommand
+{
+    public List<Regex> Patterns => [
+        new Regex(@"^lossback", RegexOptions.IgnoreCase)
+    ];
+    public string? HelpText => "Collect your lossback";
+    public UserRight RequiredRight => UserRight.Loser;
+    public TimeSpan Timeout => TimeSpan.FromSeconds(10);
+
+    public async Task RunCommand(ChatBot botInstance, MessageModel message, UserDbModel user, GroupCollection arguments,
+        CancellationToken ctx)
+    {
+        await using var db = new ApplicationDbContext();
+        var gambler = await user.GetGamblerEntity(ct: ctx);
+        var settings = await SettingsProvider.GetMultipleValuesAsync([
+            BuiltIn.Keys.MoneyLossbackPercentage, BuiltIn.Keys.MoneyLossbackMinimumAmount
+        ]);
+        var mostRecentLossback = await db.Transactions.LastOrDefaultAsync(tx =>
+            tx.EventSource == TransactionSourceEventType.Lossback && tx.Gambler == gambler, cancellationToken: ctx);
+        long offset = 0;
+        if (mostRecentLossback != null)
+        {
+            offset = mostRecentLossback.TimeUnixEpochSeconds;
+        }
+
+        var wagers = await db.Wagers.Where(w => w.Gambler == gambler && w.TimeUnixEpochSeconds > offset && w.Multiplier < 1).ToListAsync(ctx);
+        if (wagers.Count == 0)
+        {
+            await botInstance.SendChatMessageAsync(
+                $"@{user.KfUsername}, you don't have any losses to juice back.", true);
+            return;
+        }
+
+        var wagered = wagers.Sum(wager => Math.Abs(wager.WagerEffect));
+        var lossback = wagered * (decimal)(settings[BuiltIn.Keys.MoneyLossbackPercentage].ToType<float>() / 100.0);
+        var minimumLossback = settings[BuiltIn.Keys.MoneyLossbackMinimumAmount].ToType<decimal>();
+        if (lossback < minimumLossback)
+        {
+            await botInstance.SendChatMessageAsync($"@{user.KfUsername}, your lossback payout of {await lossback.FormatKasinoCurrencyAsync()} is below the minimum amount of {await minimumLossback.FormatKasinoCurrencyAsync()}", true);
+            return;
+        }
+        await gambler!.ModifyBalance(lossback, TransactionSourceEventType.Lossback, "Lossback claimed by gambler",
+            ct: ctx);
+        await botInstance.SendChatMessageAsync($"@{user.KfUsername}, the hostess has given you {await lossback.FormatKasinoCurrencyAsync()} lossback", true);
     }
 }

KfChatDotNetBot/Models/DbModels/MoneyDbModels.cs

@@ -264,7 +264,13 @@ public enum TransactionSourceEventType
     /// <summary>
     /// Use this only for hostess juicers as the sum of these juicers in a given day can influence the hostess' behavior 
     /// </summary>
-    Hostess
+    Hostess,
+    /// <summary>
+    /// Specifically use for lossback as we use the delta between last lossback txn to calculate total lost
+    /// to figure out what the next lossback should be. (Basically return a small % of the player's losses
+    /// unless the player's actual position is positive during the period, then tell them to fuck off)
+    /// </summary>
+    Lossback
 }
 
 public enum WagerGame

KfChatDotNetBot/Settings/BuiltIn.cs

@@ -1008,6 +1008,21 @@ public static class BuiltIn
             ValueType = SettingValueType.Text,
             Regex = WholeNumberRegex
         },
+        new BuiltInSettingsModel
+        {
+            Key = Keys.MoneyLossbackPercentage,
+            Description = "Percentage of total amount lost that should be returned for lossback.",
+            Default = "5",
+            ValueType = SettingValueType.Text
+        },
+        new BuiltInSettingsModel
+        {
+            Key = Keys.MoneyLossbackMinimumAmount,
+            Description = "Minimum lossback to pay out. Anything below this will tell the user to go away.",
+            Default = "100",
+            ValueType = SettingValueType.Text,
+            Regex = WholeNumberRegex
+        },
     ];
     
     public static class Keys
@@ -1122,5 +1137,7 @@ public static class BuiltIn
         public static string OwncastPersistedCurrentlyLive = "Owncast.PersistedCurrentlyLive";
         public static string MoneyRakebackPercentage = "Money.Rakeback.Percentage";
         public static string MoneyRakebackMinimumAmount = "Money.Rakeback.MinimumAmount";
+        public static string MoneyLossbackPercentage = "Money.Lossback.Percentage";
+        public static string MoneyLossbackMinimumAmount = "Money.Lossback.MinimumAmount";
     }
 }