Validate battle save event keys

src/game/state/battleSaveState.ts

@@ -77,11 +77,13 @@ type BattleSaveValidationOptions = {
   validItemIds?: ReadonlySet<string>;
   validEquipmentItemIds?: ReadonlySet<string>;
   validEquipmentSlotItems?: Partial<Record<EquipmentSlot, ReadonlySet<string>>>;
+  validTriggeredBattleEventIds?: ReadonlySet<string>;
 };
 
 const unitDirections = new Set<UnitDirection>(['south', 'east', 'north', 'west']);
 const maxBattleLogEntries = 10;
 const maxBattleLogEntryLength = 96;
+const maxTriggeredBattleEventLength = 96;
 const defaultBattleSaveArrayLimit = 128;
 const maxStatusKindsPerUnit = 2;
 
@@ -140,7 +142,7 @@ export function isValidBattleSaveState(state: unknown, options: BattleSaveValida
     !isOptionalStatusArray(state.battleStatuses, options) ||
     !isOptionalStatsRecord(state.battleStats, options) ||
     !isOptionalEnemyUsableUseKeyArray(state.enemyUsableUseKeys, state.battleId, options) ||
-    !isOptionalStringArray(state.triggeredBattleEvents)
+    !isOptionalTriggeredBattleEventArray(state.triggeredBattleEvents, options)
   ) {
     return false;
   }
@@ -176,10 +178,6 @@ function isBattleStatusKind(value: unknown): value is BattleSaveStatusKind {
   return value === 'burn' || value === 'confusion';
 }
 
-function isStringArray(value: unknown) {
-  return Array.isArray(value) && value.every((entry) => typeof entry === 'string');
-}
-
 function isUnitIdArray(value: unknown, options: BattleSaveValidationOptions) {
   return (
     Array.isArray(value) &&
@@ -189,10 +187,6 @@ function isUnitIdArray(value: unknown, options: BattleSaveValidationOptions) {
   );
 }
 
-function isOptionalStringArray(value: unknown) {
-  return value === undefined || isStringArray(value);
-}
-
 function isBattleLog(value: unknown) {
   return (
     Array.isArray(value) &&
@@ -409,6 +403,22 @@ function isOptionalEnemyUsableUseKeyArray(value: unknown, battleId: string, opti
   );
 }
 
+function isOptionalTriggeredBattleEventArray(value: unknown, options: BattleSaveValidationOptions) {
+  return (
+    value === undefined ||
+    (Array.isArray(value) &&
+      value.length <= triggeredBattleEventLimit(options) &&
+      hasUniqueStrings(value) &&
+      value.every(
+        (eventId) =>
+          typeof eventId === 'string' &&
+          eventId.length > 0 &&
+          eventId.length <= maxTriggeredBattleEventLength &&
+          (!options.validTriggeredBattleEventIds || options.validTriggeredBattleEventIds.has(eventId))
+      ))
+  );
+}
+
 function isEnemyUsableUseKey(value: unknown, battleId: string, options: BattleSaveValidationOptions) {
   if (typeof value !== 'string') {
     return false;
@@ -447,6 +457,10 @@ function enemyUsableUseKeyLimit(options: BattleSaveValidationOptions) {
   return defaultBattleSaveArrayLimit;
 }
 
+function triggeredBattleEventLimit(options: BattleSaveValidationOptions) {
+  return options.validTriggeredBattleEventIds?.size ?? defaultBattleSaveArrayLimit;
+}
+
 function hasUniqueStrings(values: unknown[]) {
   return new Set(values.filter((entry) => typeof entry === 'string')).size === values.length;
 }