update stock ledger

src/main/java/com/ffii/fpsms/modules/stock/entity/StockLedgerRepository.kt

@@ -52,10 +52,9 @@ interface StockLedgerRepository: AbstractRepository<StockLedger, Long> {
 
 
     @Query("""
-        SELECT sl FROM StockLedger sl
-        WHERE sl.itemId = :itemId
-          AND sl.deleted = false
-        ORDER BY sl.date DESC, sl.id DESC
-    """)
-    fun findLatestByItemId(@Param("itemId") itemId: Long): StockLedger?
+    SELECT sl FROM StockLedger sl
+    WHERE sl.itemId = :itemId AND sl.deleted = false
+    ORDER BY sl.date DESC, sl.id DESC
+""")
+fun findLatestByItemId(@Param("itemId") itemId: Long): List<StockLedger>
 }

src/main/java/com/ffii/fpsms/modules/stock/service/StockInLineService.kt

@@ -718,23 +718,29 @@ open class StockInLineService(
     private fun createStockLedgerForStockIn(stockInLine: StockInLine) {
         val item = stockInLine.item ?: return
         val inventory = inventoryRepository.findByItemId(item.id!!).orElse(null) ?: return
-
+    
         val inQty = stockInLine.acceptedQty?.toDouble() ?: 0.0
-        // 直接使用 inventory.onHandQty 作为 balance（已经是更新后的值）
-        val newBalance = (inventory.onHandQty ?: BigDecimal.ZERO).toDouble()
-
+        
+        // ✅ 修复：查询最新的 stock_ledger 记录，基于前一笔 balance 计算
+        val latestLedger = stockLedgerRepository.findLatestByItemId(item.id!!).firstOrNull()
+        
+        val previousBalance = latestLedger?.balance 
+            ?: (inventory.onHandQty ?: BigDecimal.ZERO).toDouble()
+        
+        val newBalance = previousBalance + inQty
+    
         val stockLedger = StockLedger().apply {
             this.stockInLine = stockInLine
             this.inventory = inventory
             this.inQty = inQty
             this.outQty = null
-            this.balance = newBalance
+            this.balance = newBalance 
             this.type = stockInLine.type
             this.itemId = item.id
             this.itemCode = item.code
             this.date = LocalDate.now()
         }
-
+    
         stockLedgerRepository.saveAndFlush(stockLedger)
     }
 

src/main/java/com/ffii/fpsms/modules/stock/service/StockOutLineService.kt

@@ -1272,8 +1272,8 @@ private fun createStockLedgerForStockOut(stockOutLine: StockOutLine) {
     
         val inventory = inventoryRepository.findAllByItemIdAndDeletedIsFalse(item.id!!)
             .firstOrNull() ?: return
-    
-        val latestLedger = stockLedgerRepository.findLatestByItemId(item.id!!)
+
+        val latestLedger = stockLedgerRepository.findLatestByItemId(item.id!!).firstOrNull()
         
          val previousBalance = latestLedger?.balance 
                 ?: (inventory.onHandQty ?: BigDecimal.ZERO).toDouble()