Daily dollar that resets midnight BMT

KfChatDotNetBot/Commands/Kasino/KasinoUserCommands.cs

@@ -387,3 +387,51 @@ public class HostessCommand : ICommand
         await botInstance.SendChatMessageAsync(llmResponse, true, ChatBot.LengthLimitBehavior.TruncateExactly);
     }
 }
+
+[KasinoCommand]
+public class GetDailyDollarCommand : ICommand
+{
+    public List<Regex> Patterns => [
+        new Regex("^daily", RegexOptions.IgnoreCase),
+    ];
+    public string? HelpText => "Get your daily dollah";
+    public UserRight RequiredRight => UserRight.Loser;
+    public TimeSpan Timeout => TimeSpan.FromSeconds(10);
+    public RateLimitOptionsModel? RateLimitOptions => null;
+    public async Task RunCommand(ChatBot botInstance, MessageModel message, UserDbModel user, GroupCollection arguments,
+        CancellationToken ctx)
+    {
+        var settings = await SettingsProvider.GetMultipleValuesAsync([
+            BuiltIn.Keys.KasinoDailyDollarEnabled, BuiltIn.Keys.KasinoDailyDollarAmount
+        ]);
+        if (!settings[BuiltIn.Keys.KasinoDailyDollarEnabled].ToBoolean())
+        {
+            await botInstance.SendChatMessageAsync($"{user.FormatUsername()}, daily dollar has been disabled :(", true,
+                autoDeleteAfter: TimeSpan.FromSeconds(15));
+            return;
+        }
+        var gambler = await Money.GetGamblerEntityAsync(user.Id, ct: ctx);
+        await using var db = new ApplicationDbContext();
+        var mostRecentTxn = await db.Transactions.OrderBy(x => x.Id).LastOrDefaultAsync(x =>
+            x.Gambler == gambler && x.EventSource == TransactionSourceEventType.DailyDollar, cancellationToken: ctx);
+        if (mostRecentTxn != null)
+        {
+            var rolloverTime = await Money.GetKasinoDate();
+            // It's really more a question of whether the most recent txn was in the same game day
+            if (mostRecentTxn.Time >= rolloverTime)
+            {
+                var span = rolloverTime.AddDays(1) - DateTimeOffset.UtcNow;
+                await botInstance.SendChatMessageAsync(
+                    $"{user.FormatUsername()}, your next daily dollar will be available in {span.Humanize(maxUnit: TimeUnit.Hour, minUnit: TimeUnit.Second)}",
+                    true, autoDeleteAfter: TimeSpan.FromSeconds(15));
+                return;
+            }
+        }
+
+        var amount = settings[BuiltIn.Keys.KasinoDailyDollarAmount].ToType<decimal>();
+        await Money.ModifyBalanceAsync(gambler!.Id, amount, TransactionSourceEventType.DailyDollar,
+            "Daily dollar redemption", ct: ctx);
+        await botInstance.SendChatMessageAsync($"{user.FormatUsername()}, you redeemed {await amount.FormatKasinoCurrencyAsync()}", true,
+            autoDeleteAfter: TimeSpan.FromSeconds(15));
+    }
+}

KfChatDotNetBot/Models/DbModels/MoneyDbModels.cs

@@ -270,7 +270,11 @@ public enum TransactionSourceEventType
     /// 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
+    Lossback,
+    /// <summary>
+    /// A specific form of 24 hour time-based reload that has no wager requirement
+    /// </summary>
+    DailyDollar
 }
 
 public enum WagerGame

KfChatDotNetBot/Services/Money.cs

@@ -531,4 +531,22 @@ public static class Money
     {
         return Convert.ToHexString(Guid.NewGuid().ToByteArray()[..4]).ToLower();
     }
+
+    /// <summary>
+    /// Get the current Kasino day based on the configured timezone offset
+    /// </summary>
+    /// <returns>Kasino day at midnight</returns>
+    /// <exception cref="InvalidOperationException">Thrown if Kasino.Timezone is null or empty</exception>
+    public static async Task<DateTimeOffset> GetKasinoDate()
+    {
+        var tz = await SettingsProvider.GetValueAsync(BuiltIn.Keys.KasinoTimezone);
+        if (string.IsNullOrEmpty(tz.Value))
+        {
+            throw new InvalidOperationException();
+        }
+
+        var systemTz = TimeZoneInfo.FindSystemTimeZoneById(tz.Value);
+        var now = TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, systemTz);
+        return new DateTimeOffset(now.Date, systemTz.BaseUtcOffset);
+    }
 }

KfChatDotNetBot/Settings/BuiltIn.cs

@@ -465,6 +465,12 @@ public static class BuiltIn
         public static string ZiplineUrl = "Zipline.Url";
         [BuiltInSetting("Delay in milliseconds before cleaning up blackjack", SettingValueType.Text, "20000", WholeNumberRegex)]
         public static string KasinoBlackjackCleanupDelay = "Kasino.Blackjack.CleanupDelay";
+        [BuiltInSetting("Amount for the daily dollar to pay out", SettingValueType.Text, "100", WholeNumberRegex)]
+        public static string KasinoDailyDollarAmount = "Kasino.DailyDollar.Amount";
+        [BuiltInSetting("Whether daily dollars can be redeemed", SettingValueType.Boolean, "true", BooleanRegex)]
+        public static string KasinoDailyDollarEnabled = "Kasino.DailyDollar.Enabled";
+        [BuiltInSetting("Timezone to use for daily reloads etc.", SettingValueType.Text, "Eastern Standard Time")]
+        public static string KasinoTimezone = "Kasino.Timezone";
     }
 }