From d0085eeb181a5ee1558cf6126a00406bb75f7897 Mon Sep 17 00:00:00 2001
From: Wickedness <y2keui@nate.com>
Date: Sun, 5 Jul 2026 14:13:27 +0900
Subject: [PATCH] Deduplicate campaign reward references

---
 .../verify-campaign-save-normalization.mjs    |  6 +++
 src/game/state/campaignState.ts               | 46 +++++++++++++------
 2 files changed, 38 insertions(+), 14 deletions(-)

diff --git a/scripts/verify-campaign-save-normalization.mjs b/scripts/verify-campaign-save-normalization.mjs
index 00e7512..56024ee 100644
--- a/scripts/verify-campaign-save-normalization.mjs
+++ b/scripts/verify-campaign-save-normalization.mjs
@@ -649,11 +649,13 @@ try {
           reputation: ['Village Thanks', ' Village Thanks '],
           recruits: [
             { unitId: ' guan-yu ', name: ' Guan Yu ' },
+            { unitId: 'guan-yu', name: 'Duplicate Guan Yu' },
             { unitId: '', name: 'Broken' },
             ...Array.from({ length: 140 }, (_, index) => ({ unitId: `recruit-${index}`, name: `Recruit ${index}` }))
           ],
           unlocks: [
             { battleId: ' second-battle-yellow-turban-pursuit ', title: ' Next ' },
+            { battleId: 'second-battle-yellow-turban-pursuit', title: 'Duplicate Next' },
             { battleId: '', title: 'Broken' },
             ...Array.from({ length: 140 }, (_, index) => ({ battleId: `battle-${index}`, title: `Battle ${index}` }))
           ],
@@ -690,8 +692,12 @@ try {
       malformedReport.firstBattleReport.campaignRewards?.reputation.length === 1 &&
       malformedReport.firstBattleReport.campaignRewards?.recruits.length === 128 &&
       malformedReport.firstBattleReport.campaignRewards?.recruits[0].unitId === 'guan-yu' &&
+      malformedReport.firstBattleReport.campaignRewards?.recruits[0].name === 'Guan Yu' &&
+      malformedReport.firstBattleReport.campaignRewards?.recruits.filter((recruit) => recruit.unitId === 'guan-yu').length === 1 &&
       malformedReport.firstBattleReport.campaignRewards?.unlocks.length === 128 &&
       malformedReport.firstBattleReport.campaignRewards?.unlocks[0].battleId === 'second-battle-yellow-turban-pursuit' &&
+      malformedReport.firstBattleReport.campaignRewards?.unlocks[0].title === 'Next' &&
+      malformedReport.firstBattleReport.campaignRewards?.unlocks.filter((unlock) => unlock.battleId === 'second-battle-yellow-turban-pursuit').length === 1 &&
       malformedReport.firstBattleReport.campaignRewards?.note === 'Reward note' &&
       malformedReport.firstBattleReport.completedCampDialogues.length === 1 &&
       malformedReport.firstBattleReport.completedCampVisits.length === 0,
diff --git a/src/game/state/campaignState.ts b/src/game/state/campaignState.ts
index 5774167..12b81ae 100644
--- a/src/game/state/campaignState.ts
+++ b/src/game/state/campaignState.ts
@@ -905,6 +905,18 @@ function uniqueStrings(value: unknown): string[] {
   ].slice(0, maxCampaignStringListEntries);
 }
 
+function uniqueByKey<T>(entries: T[], keyForEntry: (entry: T) => string) {
+  const seen = new Set<string>();
+  return entries.filter((entry) => {
+    const key = keyForEntry(entry);
+    if (!key || seen.has(key)) {
+      return false;
+    }
+    seen.add(key);
+    return true;
+  });
+}
+
 function normalizeKeyString(value: unknown): string {
   if (typeof value !== 'string') {
     return '';
@@ -1658,21 +1670,27 @@ function cloneCampaignRewardSnapshot(rewards?: CampaignRewardSnapshot): Campaign
     supplies: uniqueStrings(rewardRecord.supplies),
     equipment: uniqueStrings(rewardRecord.equipment),
     reputation: uniqueStrings(rewardRecord.reputation),
-    recruits: arrayOrEmpty<unknown>(rewardRecord.recruits)
-      .filter(isPlainObject)
-      .map((recruit) => ({
-        unitId: normalizeKeyString(recruit.unitId),
-        name: normalizeDisplayString(recruit.name)
-      }))
-      .filter((recruit) => recruit.unitId && recruit.name)
+    recruits: uniqueByKey(
+      arrayOrEmpty<unknown>(rewardRecord.recruits)
+        .filter(isPlainObject)
+        .map((recruit) => ({
+          unitId: normalizeKeyString(recruit.unitId),
+          name: normalizeDisplayString(recruit.name)
+        }))
+        .filter((recruit) => recruit.unitId && recruit.name),
+      (recruit) => recruit.unitId
+    )
       .slice(0, maxCampaignStringListEntries),
-    unlocks: arrayOrEmpty<unknown>(rewardRecord.unlocks)
-      .filter(isPlainObject)
-      .map((unlock) => ({
-        battleId: normalizeKeyString(unlock.battleId),
-        title: normalizeDisplayString(unlock.title)
-      }))
-      .filter((unlock) => unlock.battleId && unlock.title)
+    unlocks: uniqueByKey(
+      arrayOrEmpty<unknown>(rewardRecord.unlocks)
+        .filter(isPlainObject)
+        .map((unlock) => ({
+          battleId: normalizeKeyString(unlock.battleId),
+          title: normalizeDisplayString(unlock.title)
+        }))
+        .filter((unlock) => unlock.battleId && unlock.title),
+      (unlock) => unlock.battleId
+    )
       .slice(0, maxCampaignStringListEntries),
     note: note.length > 0 && note.length <= maxCampaignRewardNoteLength ? note : undefined
   };