Charge-Mengen beim Bearbeiten ersetzen

modules/erp/lager/api/lot.php

@@ -90,6 +90,7 @@ try {
         $manufacturerPartyId = $data['manufacturerPartyId'] ?? null;
         $manufacturerPartyId = $manufacturerPartyId === null || $manufacturerPartyId === '' ? null : (int) $manufacturerPartyId;
         $receiptQty = isset($data['receiptQty']) && $data['receiptQty'] !== '' ? (float) $data['receiptQty'] : 0.0;
+        $targetQty = isset($data['targetQty']) && $data['targetQty'] !== '' ? (float) $data['targetQty'] : null;
         $preparedLot = update_stock_lot_traceability(
             $pdo,
             $lotId,
@@ -102,7 +103,8 @@ try {
             $receiptQty,
             0.0,
             0.0,
-            $lotNumber
+            $lotNumber,
+            $targetQty
         );
         json_response(200, ['ok' => true, 'lot' => $preparedLot, 'balance' => get_stock_lot_balance($pdo, $lotId)]);
     }

modules/erp/lager/service.php

@@ -216,7 +216,7 @@ function get_lager_product_overview(PDO $pdo): array
                 'mfg_date' => $openLot['mfg_date'],
                 'expiry_date' => $openLot['expiry_date'],
                 'purchase_date' => $openLot['purchase_date'],
-                'qty_in' => (float) $openLot['qty_in'],
+                'qty_in' => (float) $openLot['qty_net'],
                 'qty_net' => (float) $openLot['qty_net'],
         ];
     }
@@ -242,7 +242,8 @@ function update_stock_lot_traceability(
     float $receiptQty = 0.0,
     float $adjustmentQty = 0.0,
     float $outQty = 0.0,
-    ?string $lotNumber = null
+    ?string $lotNumber = null,
+    ?float $targetQty = null
 ): array {
     if ($lotId <= 0) {
         throw new InvalidArgumentException('Chargen-ID fehlt');
@@ -260,6 +261,9 @@ function update_stock_lot_traceability(
     if (!is_finite($receiptQty) || !is_finite($adjustmentQty) || !is_finite($outQty)) {
         throw new InvalidArgumentException('Ungueltige Bewegungsmenge');
     }
+    if ($targetQty !== null && (!is_finite($targetQty) || $targetQty < 0)) {
+        throw new InvalidArgumentException('Ungueltige Chargenmenge');
+    }
     if ($receiptQty < 0 || $outQty < 0) {
         throw new InvalidArgumentException('Zugang und Abgang duerfen nicht negativ sein');
     }
@@ -307,6 +311,9 @@ function update_stock_lot_traceability(
         if ((string) $before['status'] === 'virtual_shortage') {
             throw new InvalidArgumentException('Virtuelle Fehlbestandschargen koennen nicht gepflegt werden');
         }
+        if ($targetQty !== null && (string) $before['status'] !== 'open') {
+            throw new InvalidArgumentException('Nur offene Chargen koennen mit einer Zielmenge bearbeitet werden');
+        }
         if ($lotNumber !== null && (string) $before['status'] !== 'open') {
             throw new InvalidArgumentException('Nur offene Chargen koennen neu angelegt werden');
         }
@@ -331,7 +338,24 @@ function update_stock_lot_traceability(
         if ($manufacturerPartyId !== null && $manufacturerLotNumber === null && (string) $before['status'] !== 'open') {
             throw new InvalidArgumentException('Hersteller-Chargennummer fehlt');
         }
-        if (($adjustmentQty !== 0.0 || $outQty > 0) && (string) $before['status'] !== 'current') {
+        if ($targetQty !== null) {
+            $balanceStmt = $pdo->prepare(
+                "SELECT COALESCE(SUM(CASE
+                    WHEN move_type = 'in' THEN qty
+                    WHEN move_type = 'out' THEN -qty
+                    ELSE 0
+                END), 0)
+                 FROM stock_move
+                 WHERE lot_id = :lot_id"
+            );
+            $balanceStmt->execute([':lot_id' => $lotId]);
+            $quantityDelta = $targetQty - (float) $balanceStmt->fetchColumn();
+            $receiptQty = $quantityDelta > 0 ? $quantityDelta : 0.0;
+            $outQty = $quantityDelta < 0 ? abs($quantityDelta) : 0.0;
+            $adjustmentQty = 0.0;
+        }
+
+        if (($adjustmentQty !== 0.0 || $outQty > 0) && (string) $before['status'] !== 'current' && $targetQty === null) {
             throw new InvalidArgumentException('Korrekturen und Abgaenge koennen nur auf der aktiven Charge gebucht werden');
         }