clerical error station event (#23091)

Content.Server/StationEvents/Components/ClericalErrorRuleComponent.cs

@@ -0,0 +1,23 @@
+using Content.Server.StationEvents.Events;
+
+namespace Content.Server.StationEvents.Components;
+
+/// <summary>
+/// This is a station event that randomly removes some records from the station record database.
+/// </summary>
+[RegisterComponent]
+[Access(typeof(ClericalErrorRule))]
+public sealed partial class ClericalErrorRuleComponent : Component
+{
+    /// <summary>
+    /// The minimum percentage number of records to remove from the station.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public float MinToRemove = 0.0025f;
+
+    /// <summary>
+    /// The maximum percentage number of records to remove from the station.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public float MaxToRemove = 0.1f;
+}

Content.Server/StationEvents/Events/ClericalErrorRule.cs

@@ -0,0 +1,43 @@
+using Content.Server.GameTicking.Rules.Components;
+using Content.Server.StationEvents.Components;
+using Content.Server.StationRecords;
+using Content.Server.StationRecords.Systems;
+using Content.Shared.StationRecords;
+using Robust.Shared.Random;
+
+namespace Content.Server.StationEvents.Events;
+
+public sealed class ClericalErrorRule : StationEventSystem<ClericalErrorRuleComponent>
+{
+    [Dependency] private readonly StationRecordsSystem _stationRecords = default!;
+
+    protected override void Started(EntityUid uid, ClericalErrorRuleComponent component, GameRuleComponent gameRule, GameRuleStartedEvent args)
+    {
+        base.Started(uid, component, gameRule, args);
+
+        if (!TryGetRandomStation(out var chosenStation))
+            return;
+
+        if (!TryComp<StationRecordsComponent>(chosenStation, out var stationRecords))
+            return;
+
+        var recordCount = stationRecords.Records.Keys.Count;
+
+        if (recordCount == 0)
+            return;
+
+        var min = (int) Math.Max(1, Math.Round(component.MinToRemove * recordCount));
+        var max = (int) Math.Max(min, Math.Round(component.MaxToRemove * recordCount));
+        var toRemove = RobustRandom.Next(min, max);
+        var keys = new List<StationRecordKey>();
+        for (var i = 0; i < toRemove; i++)
+        {
+            keys.Add(RobustRandom.Pick(stationRecords.Records.Keys));
+        }
+
+        foreach (var key in keys)
+        {
+            _stationRecords.RemoveRecord(chosenStation.Value, key, stationRecords);
+        }
+    }
+}