feat(inventory): 強化調撥單功能，支援販賣機貨道欄位、開放商品重複加入及優化過帳庫存檢核

app/Modules/Inventory/Controllers/TransferOrderController.php

@@ -108,6 +108,7 @@ class TransferOrderController extends Controller
             'from_warehouse_name' => $order->fromWarehouse->name,
             'to_warehouse_id' => (string) $order->to_warehouse_id,
             'to_warehouse_name' => $order->toWarehouse->name,
+            'to_warehouse_type' => $order->toWarehouse->type->value, // 用於判斷是否為販賣機
             'status' => $order->status,
             'remarks' => $order->remarks,
             'created_at' => $order->created_at->format('Y-m-d H:i'),
@@ -128,6 +129,7 @@ class TransferOrderController extends Controller
                     'expiry_date' => $stock && $stock->expiry_date ? $stock->expiry_date->format('Y-m-d') : null,
                     'unit' => $item->product->baseUnit?->name,
                     'quantity' => (float) $item->quantity,
+                    'position' => $item->position,
                     'max_quantity' => $item->snapshot_quantity ? (float) $item->snapshot_quantity : ($stock ? (float) $stock->quantity : 0.0),
                     'notes' => $item->notes,
                 ];
@@ -145,31 +147,32 @@ class TransferOrderController extends Controller
             return redirect()->back()->with('error', '只能修改草稿狀態的單據');
         }
 
+        // 1. 先更新資料 (如果請求中包含 items，則先執行儲存)
+        $itemsChanged = false;
+        if ($request->has('items')) {
             $validated = $request->validate([
                 'items' => 'array',
                 'items.*.product_id' => 'required|exists:products,id',
                 'items.*.quantity' => 'required|numeric|min:0.01',
                 'items.*.batch_number' => 'nullable|string',
+                'items.*.position' => 'nullable|string',
                 'items.*.notes' => 'nullable|string',
-            'remarks' => 'nullable|string',
             ]);
-
-        // 1. 先更新資料
-        $itemsChanged = false;
-        if ($request->has('items')) {
             $itemsChanged = $this->transferService->updateItems($order, $validated['items']);
         }
 
-        $remarksChanged = $order->remarks !== ($validated['remarks'] ?? null);
+        $remarksChanged = false;
+        if ($request->has('remarks')) {
+            $remarksChanged = $order->remarks !== $request->input('remarks');
+            $order->remarks = $request->input('remarks');
+        }
 
         if ($itemsChanged || $remarksChanged) {
-            $order->remarks = $validated['remarks'] ?? null;
             // [IMPORTANT] 使用 touch() 確保即便只有品項異動，也會因為 updated_at 變更而觸發自動日誌
             $order->touch(); 
             $message = '儲存成功';
         } else {
             $message = '資料未變更';
-            // 如果沒變更，就不執行 touch()，也不會產生 Activity Log
         }
 
         // 2. 判斷是否需要過帳
@@ -178,6 +181,8 @@ class TransferOrderController extends Controller
                 $this->transferService->post($order, auth()->id());
                 return redirect()->route('inventory.transfer.index')
                     ->with('success', '調撥單已過帳完成');
+            } catch (ValidationException $e) {
+                return redirect()->back()->withErrors($e->errors());
             } catch (\Exception $e) {
                 return redirect()->back()->withErrors(['items' => $e->getMessage()]);
             }
@@ -224,4 +229,30 @@ class TransferOrderController extends Controller
 
         return response()->json($inventories);
     }
+    public function importItems(Request $request, InventoryTransferOrder $order)
+    {
+        if ($order->status !== 'draft') {
+            return redirect()->back()->with('error', '只能在草稿狀態下匯入明細');
         }
+
+        $request->validate([
+            'file' => 'required|file|mimes:xlsx,xls,csv',
+        ]);
+
+        try {
+            \Maatwebsite\Excel\Facades\Excel::import(new \App\Modules\Inventory\Imports\InventoryTransferItemImport($order), $request->file('file'));
+            return redirect()->back()->with('success', '匯入成功');
+        } catch (\Exception $e) {
+            return redirect()->back()->with('error', '匯入失敗：' . $e->getMessage());
+        }
+    }
+
+    public function template()
+    {
+        return \Maatwebsite\Excel\Facades\Excel::download(
+            new \App\Modules\Inventory\Exports\InventoryTransferTemplateExport(),
+            '調撥單明細匯入範本.xlsx'
+        );
+    }
+}
+

app/Modules/Inventory/Exports/InventoryTransferTemplateExport.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace App\Modules\Inventory\Exports;
+
+use Maatwebsite\Excel\Concerns\Exportable;
+use Maatwebsite\Excel\Concerns\WithMultipleSheets;
+use Maatwebsite\Excel\Concerns\WithTitle;
+use Maatwebsite\Excel\Concerns\FromCollection;
+use Maatwebsite\Excel\Concerns\WithHeadings;
+use Maatwebsite\Excel\Concerns\WithStyles;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class InventoryTransferTemplateExport implements WithMultipleSheets
+{
+    use Exportable;
+
+    public function sheets(): array
+    {
+        return [
+            new class implements FromCollection, WithHeadings, WithTitle, WithStyles {
+                public function collection()
+                {
+                    return collect([
+                        ['P001', 'BATCH-2024001', '10', 'A1', '範例：請刪除此列後填寫'],
+                    ]);
+                }
+
+                public function headings(): array
+                {
+                    return ['商品代碼', '批號', '數量', '貨道/儲位', '備註'];
+                }
+
+                public function title(): string
+                {
+                    return '明細匯入';
+                }
+
+                public function styles(Worksheet $sheet)
+                {
+                    return [
+                        1 => ['font' => ['bold' => true]],
+                    ];
+                }
+            },
+            new class implements FromCollection, WithHeadings, WithTitle, WithStyles {
+                public function collection()
+                {
+                    return collect([
+                        ['商品代碼', '必填', '請填寫系統中已存在的商品代號'],
+                        ['數量', '必填', '必須為大於 0 的數字'],
+                        ['批號', '選填', '若不填寫將自動對應「NO-BATCH」庫存'],
+                        ['貨道/儲位', '選填', '主要用於目的倉庫為「販賣機」時指定貨道'],
+                        ['備註', '選填', '可填寫該筆明細的備註說明'],
+                        ['', '', ''],
+                        ['提示', '附加模式', '匯入的明細將附加至現有單據，不會覆蓋原有資料'],
+                    ]);
+                }
+
+                public function headings(): array
+                {
+                    return ['欄位名稱', '必要性', '說明'];
+                }
+
+                public function title(): string
+                {
+                    return '匯入規則說明';
+                }
+
+                public function styles(Worksheet $sheet)
+                {
+                    $sheet->getColumnDimension('A')->setWidth(15);
+                    $sheet->getColumnDimension('B')->setWidth(15);
+                    $sheet->getColumnDimension('C')->setWidth(50);
+                    return [
+                        1 => ['font' => ['bold' => true]],
+                    ];
+                }
+            },
+        ];
+    }
+}

app/Modules/Inventory/Imports/InventoryTransferItemImport.php

@@ -0,0 +1,131 @@
+<?php
+
+namespace App\Modules\Inventory\Imports;
+
+use App\Modules\Inventory\Models\InventoryTransferItem;
+use App\Modules\Inventory\Models\InventoryTransferOrder;
+use App\Modules\Inventory\Models\Product;
+use Illuminate\Support\Collection;
+use Maatwebsite\Excel\Concerns\ToCollection;
+use Maatwebsite\Excel\Concerns\WithHeadingRow;
+use Maatwebsite\Excel\Concerns\WithMultipleSheets;
+use Exception;
+
+class InventoryTransferItemImport implements ToCollection, WithMultipleSheets
+{
+    protected $transferOrder;
+
+    public function __construct(InventoryTransferOrder $transferOrder)
+    {
+        $this->transferOrder = $transferOrder;
+    }
+
+    public function collection(Collection $rows)
+    {
+        if ($rows->isEmpty()) {
+            throw new Exception("檔案中沒有資料。");
+        }
+
+        // 移除標題列並解析索引
+        $headerRow = $rows->shift();
+        $headers = $headerRow->toArray();
+        
+        // 建立標題對應索引 (支援中文與英文)
+        $colMap = [
+            'product_code' => -1,
+            'batch_number' => -1,
+            'quantity' => -1,
+            'position' => -1,
+            'notes' => -1,
+        ];
+
+        foreach ($headers as $index => $label) {
+            $label = trim((string)$label);
+            if (in_array($label, ['商品代碼', 'product_code', 'shang_pin_dai_ma'])) $colMap['product_code'] = $index;
+            if (in_array($label, ['批號', 'batch_number', 'pi_hao'])) $colMap['batch_number'] = $index;
+            if (in_array($label, ['數量', 'quantity', 'shu_liang'])) $colMap['quantity'] = $index;
+            if (in_array($label, ['貨道/儲位', '貨道', 'position', 'slot', 'huo_dao'])) $colMap['position'] = $index;
+            if (in_array($label, ['備註', 'notes', 'bei_zhu'])) $colMap['notes'] = $index;
+        }
+
+        // 檢查必要欄位是否有找到
+        if ($colMap['product_code'] === -1 || $colMap['quantity'] === -1) {
+            $foundHeaders = implode(', ', array_filter($headers));
+            throw new Exception("找不到必要的欄位「商品代碼」或「數量」。讀取到的標題為：{$foundHeaders}。請確認使用的是正確的範本。");
+        }
+
+        // 預先載入商品 (優化效能)
+        $productCodes = $rows->map(fn($row) => trim((string)($row[$colMap['product_code']] ?? '')))->filter()->unique()->toArray();
+        $products = Product::whereIn('code', $productCodes)->get()->keyBy('code');
+
+        $newItems = [];
+        $errors = [];
+
+        foreach ($rows as $index => $row) {
+            $productCode = trim((string)($row[$colMap['product_code']] ?? ''));
+            $quantity = $row[$colMap['quantity']] ?? null;
+            $batchNumber = $colMap['batch_number'] !== -1 ? trim((string)($row[$colMap['batch_number']] ?? '')) : '';
+            $position = $colMap['position'] !== -1 ? trim((string)($row[$colMap['position']] ?? '')) : null;
+            $notes = $colMap['notes'] !== -1 ? ($row[$colMap['notes']] ?? null) : null;
+
+            // 跳過全空行
+            if (empty($productCode) && ($quantity === null || $quantity === '')) {
+                continue;
+            }
+
+            $lineNum = $index + 2; // 因為 shift 過，且 Excel 從 1 開始
+
+            if (empty($productCode)) {
+                $errors[] = "第 {$lineNum} 行：商品代碼不能為空";
+                continue;
+            }
+
+            $product = $products->get($productCode);
+            if (!$product) {
+                $errors[] = "第 {$lineNum} 行：找不到商品代碼 '{$productCode}'";
+                continue;
+            }
+
+            if (!is_numeric($quantity) || (float)$quantity <= 0) {
+                $errors[] = "第 {$lineNum} 行：數量必須為大於 0 的數字 (目前值: " . ($quantity ?? '空') . ")";
+                continue;
+            }
+
+            if (empty($batchNumber)) {
+                $batchNumber = 'NO-BATCH';
+            }
+
+            $newItems[] = [
+                'transfer_order_id' => $this->transferOrder->id,
+                'product_id' => $product->id,
+                'batch_number' => $batchNumber,
+                'quantity' => (float)$quantity,
+                'position' => $position,
+                'notes' => $notes,
+                'created_at' => now(),
+                'updated_at' => now(),
+            ];
+        }
+
+        if (count($errors) > 0) {
+            throw new Exception(implode("\n", $errors));
+        }
+
+        if (count($newItems) === 0) {
+            throw new Exception("檔案中沒有可匯入的有效資料。");
+        }
+
+        InventoryTransferItem::insert($newItems);
+        $this->transferOrder->touch();
+    }
+
+    /**
+     * 指定只匯入第一個分頁 (明細匯入)
+     */
+    public function sheets(): array
+    {
+        return [
+            0 => $this,
+        ];
+    }
+}

app/Modules/Inventory/Models/InventoryTransferItem.php

@@ -15,6 +15,7 @@ class InventoryTransferItem extends Model
         'product_id',
         'batch_number',
         'quantity',
+        'position',
         'snapshot_quantity',
         'notes',
     ];

app/Modules/Inventory/Routes/web.php

@@ -112,6 +112,16 @@ Route::middleware('auth')->group(function () {
         ->middleware('permission:inventory.view')
         ->name('api.warehouses.inventories');
 
+    // 調撥單匯入明細
+    Route::post('/inventory/transfer-orders/{order}/import', [TransferOrderController::class, 'importItems'])
+        ->middleware('permission:inventory_transfer.edit')
+        ->name('inventory.transfer.import-items');
+    
+    // 下載調撥單匯入範本
+    Route::get('/inventory/transfer-orders/template/download', [TransferOrderController::class, 'template'])
+        ->middleware('permission:inventory_transfer.view')
+        ->name('inventory.transfer.template');
+
     // 進貨單 (Goods Receipts)
     Route::middleware('permission:goods_receipts.view')->group(function () {
         Route::get('/goods-receipts', [\App\Modules\Inventory\Controllers\GoodsReceiptController::class, 'index'])->name('goods-receipts.index');

app/Modules/Inventory/Services/TransferService.php

@@ -63,6 +63,7 @@ class TransferService
                     'product_id' => $data['product_id'],
                     'batch_number' => $data['batch_number'] ?? null,
                     'quantity' => $data['quantity'],
+                    'position' => $data['position'] ?? null,
                     'notes' => $data['notes'] ?? null,
                 ]);
                 // Eager load product for name
@@ -73,16 +74,19 @@ class TransferService
                     $oldItem = $oldItemsMap->get($key);
                     // 檢查數值是否有變動
                     if ((float)$oldItem->quantity !== (float)$data['quantity'] ||
-                        $oldItem->notes !== ($data['notes'] ?? null)) {
+                        $oldItem->notes !== ($data['notes'] ?? null) ||
+                        $oldItem->position !== ($data['position'] ?? null)) {
                         
                         $diff['updated'][] = [
                             'product_name' => $item->product->name,
                             'old' => [
                                 'quantity' => (float)$oldItem->quantity,
+                                'position' => $oldItem->position,
                                 'notes' => $oldItem->notes,
                             ],
                             'new' => [
                                 'quantity' => (float)$data['quantity'],
+                                'position' => $item->position,
                                 'notes' => $item->notes,
                             ]
                         ];
@@ -148,8 +152,10 @@ class TransferService
                     ->first();
 
                 if (!$sourceInventory || $sourceInventory->quantity < $item->quantity) {
+                    $availableQty = $sourceInventory->quantity ?? 0;
+                    $shortageQty = $item->quantity - $availableQty;
                     throw ValidationException::withMessages([
-                        'items' => ["商品 {$item->product->name} (批號: {$item->batch_number}) 在來源倉庫存不足"],
+                        'items' => ["商品 {$item->product->name} (批號: {$item->batch_number}) 在來源倉庫存不足。現有庫存：{$availableQty}，尚欠：{$shortageQty}。"],
                     ]);
                 }
 
@@ -182,6 +188,7 @@ class TransferService
                         'warehouse_id' => $order->to_warehouse_id,
                         'product_id' => $item->product_id,
                         'batch_number' => $item->batch_number,
+                        'location' => $item->position, // 同步貨道至庫存位置
                     ],
                     [
                         'quantity' => 0,

database/migrations/tenant/2026_02_09_163350_add_position_to_inventory_transfer_items.php

@@ -0,0 +1,28 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('inventory_transfer_items', function (Blueprint $table) {
+            $table->string('position')->nullable()->after('quantity')->comment('貨道/儲位');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('inventory_transfer_items', function (Blueprint $table) {
+            $table->dropColumn('position');
+        });
+    }
+};

resources/js/Components/Transfer/TransferImportDialog.tsx

@@ -0,0 +1,145 @@
+import { Dialog, DialogContent, DialogHeader, DialogTitle, DialogFooter, DialogDescription } from "@/Components/ui/dialog";
+import { Button } from "@/Components/ui/button";
+import { Input } from "@/Components/ui/input";
+import { Label } from "@/Components/ui/label";
+import { Upload, Download, FileSpreadsheet, AlertCircle, Info } from "lucide-react";
+import { Accordion, AccordionContent, AccordionItem, AccordionTrigger } from "@/Components/ui/accordion";
+import { useForm, router } from "@inertiajs/react";
+import { Alert, AlertDescription } from "@/Components/ui/alert";
+
+interface TransferImportDialogProps {
+    open: boolean;
+    onOpenChange: (open: boolean) => void;
+    orderId: number;
+}
+
+export default function TransferImportDialog({ open, onOpenChange, orderId }: TransferImportDialogProps) {
+    const { data, setData, post, processing, errors, reset, clearErrors } = useForm<{
+        file: File | null;
+    }>({
+        file: null,
+    });
+
+    const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+        if (e.target.files && e.target.files[0]) {
+            setData("file", e.target.files[0]);
+            clearErrors("file");
+        }
+    };
+
+    const handleSubmit = (e: React.FormEvent) => {
+        e.preventDefault();
+        post(route("inventory.transfer.import-items", orderId), {
+            forceFormData: true,
+            onSuccess: () => {
+                reset();
+                onOpenChange(false);
+                router.reload();
+            },
+        });
+    };
+
+    const handleDownloadTemplate = () => {
+        window.location.href = route('inventory.transfer.template');
+    };
+
+    return (
+        <Dialog open={open} onOpenChange={onOpenChange}>
+            <DialogContent className="sm:max-w-[500px]">
+                <DialogHeader>
+                    <DialogTitle>匯入調撥明細</DialogTitle>
+                    <DialogDescription>
+                        請先下載範本，填寫後上傳。系統將自動附加明細至本調撥單。
+                    </DialogDescription>
+                </DialogHeader>
+
+                <form onSubmit={handleSubmit} className="space-y-6">
+                    {/* 步驟 1: 下載範本 */}
+                    <div className="space-y-2 p-4 bg-gray-50 rounded-lg border border-gray-100">
+                        <Label className="font-medium flex items-center gap-2">
+                            <FileSpreadsheet className="w-4 h-4 text-green-600" />
+                            步驟 1：取得 CSV 範本
+                        </Label>
+                        <div className="text-sm text-gray-500 mb-2">
+                            下載標準範本以確保資料格式正確。請勿修改欄位名稱。
+                        </div>
+                        <Button
+                            type="button"
+                            variant="outline"
+                            size="sm"
+                            onClick={handleDownloadTemplate}
+                            className="w-full sm:w-auto button-outlined-primary"
+                        >
+                            <Download className="w-4 h-4 mr-2" />
+                            下載範本 (.xlsx)
+                        </Button>
+                    </div>
+
+                    {/* 步驟 2: 上傳檔案 */}
+                    <div className="space-y-2">
+                        <Label className="font-medium flex items-center gap-2">
+                            <Upload className="w-4 h-4 text-blue-600" />
+                            步驟 2：上傳填寫後的檔案
+                        </Label>
+
+                        <div className="grid w-full max-w-sm items-center gap-1.5">
+                            <Input
+                                id="file"
+                                type="file"
+                                accept=".xlsx, .xls, .csv"
+                                onChange={handleFileChange}
+                                className="cursor-pointer"
+                            />
+                        </div>
+                        {errors.file && (
+                            <Alert variant="destructive" className="mt-2">
+                                <AlertCircle className="h-4 w-4" />
+                                <AlertDescription className="whitespace-pre-wrap">
+                                    {errors.file}
+                                </AlertDescription>
+                            </Alert>
+                        )}
+                    </div>
+
+                    {/* 欄位說明 */}
+                    <Accordion type="single" collapsible className="w-full border rounded-lg px-2">
+                        <AccordionItem value="item-1" className="border-b-0">
+                            <AccordionTrigger className="text-sm text-gray-500 hover:no-underline py-3">
+                                <div className="flex items-center gap-2">
+                                    <Info className="h-4 w-4" />
+                                    欄位填寫規則
+                                </div>
+                            </AccordionTrigger>
+                            <AccordionContent>
+                                <div className="text-sm text-gray-600 space-y-2 pb-2 pl-6">
+                                    <ul className="list-disc space-y-1">
+                                        <li><span className="font-medium text-gray-700">商品代碼</span>：必填，請填寫系統中已存在的商品代號。</li>
+                                        <li><span className="font-medium text-gray-700">數量</span>：必填，必須為大於 0 的數字。</li>
+                                        <li><span className="font-medium text-gray-700">批號</span>：選填，若不填寫將自動對應「無批號 (NO-BATCH)」的庫存。</li>
+                                        <li><span className="font-medium text-gray-700">備註</span>：選填，可填寫該筆明細的備註說明。</li>
+                                        <li><span className="font-medium text-gray-700">附加模式</span>：匯入的明細將附加至現有明細，不會覆蓋原有資料。</li>
+                                    </ul>
+                                </div>
+                            </AccordionContent>
+                        </AccordionItem>
+                    </Accordion>
+
+                    <DialogFooter>
+                        <Button
+                            type="button"
+                            variant="outline"
+                            onClick={() => onOpenChange(false)}
+                            disabled={processing}
+                            className="button-outlined-primary"
+                        >
+                            取消
+                        </Button>
+                        <Button type="submit" disabled={!data.file || processing} className="button-filled-primary">
+                            {processing ? "匯入中..." : "開始匯入"}
+                        </Button>
+                    </DialogFooter>
+                </form>
+            </DialogContent>
+        </Dialog>
+    );
+}

resources/js/Pages/Inventory/Transfer/Show.tsx

@@ -37,6 +37,7 @@ import { toast } from "sonner";
 import axios from "axios";
 import { Can } from '@/Components/Permission/Can';
 import { usePermission } from '@/hooks/usePermission';
+import TransferImportDialog from '@/Components/Transfer/TransferImportDialog';
 
 export default function Show({ order }: any) {
     const { can } = usePermission();
@@ -45,6 +46,15 @@ export default function Show({ order }: any) {
     const [isSaving, setIsSaving] = useState(false);
     const [deleteId, setDeleteId] = useState<string | null>(null);
     const [isPostDialogOpen, setIsPostDialogOpen] = useState(false);
+    const [isImportDialogOpen, setIsImportDialogOpen] = useState(false);
+
+    // 當 order prop 變動時 (例如匯入後 router.reload)，同步更新內部狀態
+    useEffect(() => {
+        if (order) {
+            setItems(order.items || []);
+            setRemarks(order.remarks || "");
+        }
+    }, [order]);
 
     // Product Selection
     const [isProductDialogOpen, setIsProductDialogOpen] = useState(false);
@@ -105,13 +115,6 @@ export default function Show({ order }: any) {
         availableInventory.forEach(inv => {
             const key = `${inv.product_id}-${inv.batch_number}`;
             if (selectedInventory.includes(key)) {
-                // Check if already added
-                const exists = newItems.find((i: any) =>
-                    i.product_id === inv.product_id &&
-                    i.batch_number === inv.batch_number
-                );
-
-                if (!exists) {
                 newItems.push({
                     product_id: inv.product_id,
                     product_name: inv.product_name,
@@ -125,7 +128,6 @@ export default function Show({ order }: any) {
                 });
                 addedCount++;
             }
-            }
         });
 
         setItems(newItems);
@@ -133,8 +135,6 @@ export default function Show({ order }: any) {
 
         if (addedCount > 0) {
             toast.success(`已成功加入 ${addedCount} 個項目`);
-        } else {
-            toast.info("選取的商品已在清單中");
         }
     };
 
@@ -170,6 +170,11 @@ export default function Show({ order }: any) {
         }, {
             onSuccess: () => {
                 setIsPostDialogOpen(false);
+            },
+            onError: (errors) => {
+                const message = Object.values(errors).join('\n') || "過帳失敗，請檢查輸入或庫存狀態";
+                toast.error(message);
+                setIsPostDialogOpen(false);
             }
         });
     };
@@ -184,6 +189,7 @@ export default function Show({ order }: any) {
 
     const canEdit = can('inventory_transfer.edit');
     const isReadOnly = order.status !== 'draft' || !canEdit;
+    const isVending = order.to_warehouse_type === 'vending';
 
     return (
         <AuthenticatedLayout
@@ -312,7 +318,7 @@ export default function Show({ order }: any) {
                         </div>
                     ) : (
                         <Input
-                            value={remarks}
+                            value={remarks || ""}
                             onChange={(e) => setRemarks(e.target.value)}
                             className="h-9 focus:ring-primary-main"
                             placeholder="填寫調撥單備註..."
@@ -329,6 +335,17 @@ export default function Show({ order }: any) {
                             </p>
                         </div>
                         {!isReadOnly && (
+                            <div className="flex gap-2">
+                                <Button variant="outline" className="button-outlined-primary" onClick={() => setIsImportDialogOpen(true)}>
+                                    <Package className="h-4 w-4 mr-2" />
+                                    匯入 Excel
+                                </Button>
+                                <TransferImportDialog
+                                    open={isImportDialogOpen}
+                                    onOpenChange={setIsImportDialogOpen}
+                                    orderId={order.id}
+                                />
+
                                 <Dialog open={isProductDialogOpen} onOpenChange={setIsProductDialogOpen}>
                                     <DialogTrigger asChild>
                                         <Button variant="outline" className="button-outlined-primary">
@@ -468,6 +485,7 @@ export default function Show({ order }: any) {
                                         </div>
                                     </DialogContent>
                                 </Dialog>
+                            </div>
                         )}
                     </div>
 
@@ -483,6 +501,7 @@ export default function Show({ order }: any) {
                                     </TableHead>
                                     <TableHead className="text-right w-40 font-medium text-grey-600">調撥數量</TableHead>
                                     <TableHead className="font-medium text-grey-600">單位</TableHead>
+                                    {isVending && <TableHead className="font-medium text-grey-600">貨道</TableHead>}
                                     <TableHead className="font-medium text-grey-600">備註</TableHead>
                                     {!isReadOnly && <TableHead className="w-[50px]"></TableHead>}
                                 </TableRow>
@@ -490,7 +509,7 @@ export default function Show({ order }: any) {
                             <TableBody>
                                 {items.length === 0 ? (
                                     <TableRow>
-                                        <TableCell colSpan={8} className="text-center h-24 text-gray-500">
+                                        <TableCell colSpan={isVending ? 9 : 8} className="text-center h-24 text-gray-500">
                                             尚未加入商品
                                         </TableCell>
                                     </TableRow>
@@ -524,7 +543,7 @@ export default function Show({ order }: any) {
                                                             type="number"
                                                             min="0.01"
                                                             step="any"
-                                                            value={item.quantity}
+                                                            value={item.quantity ?? ""}
                                                             onChange={(e) => handleUpdateItem(index, 'quantity', e.target.value)}
                                                             className="h-9 w-32 font-medium focus:ring-primary-main text-right"
                                                         />
@@ -532,12 +551,26 @@ export default function Show({ order }: any) {
                                                 )}
                                             </TableCell>
                                             <TableCell className="text-sm text-gray-500">{item.unit || item.unit_name}</TableCell>
+                                            {isVending && (
+                                                <TableCell className="px-1">
+                                                    {isReadOnly ? (
+                                                        <span className="text-sm font-medium">{item.position}</span>
+                                                    ) : (
+                                                        <Input
+                                                            value={item.position || ""}
+                                                            onChange={(e) => handleUpdateItem(index, 'position', e.target.value)}
+                                                            placeholder="貨道..."
+                                                            className="h-9 w-24 text-sm font-medium"
+                                                        />
+                                                    )}
+                                                </TableCell>
+                                            )}
                                             <TableCell className="px-1">
                                                 {isReadOnly ? (
                                                     <span className="text-sm text-gray-600">{item.notes}</span>
                                                 ) : (
                                                     <Input
-                                                        value={item.notes}
+                                                        value={item.notes || ""}
                                                         onChange={(e) => handleUpdateItem(index, 'notes', e.target.value)}
                                                         placeholder="備註..."
                                                         className="h-9 text-sm"

tests/Feature/InventoryTransferImportTest.php

@@ -0,0 +1,103 @@
+<?php
+
+namespace Tests\Feature;
+
+use App\Modules\Core\Models\User;
+use App\Modules\Inventory\Models\InventoryTransferOrder;
+use App\Modules\Inventory\Models\Product;
+use App\Modules\Inventory\Models\Warehouse;
+use App\Modules\Inventory\Imports\InventoryTransferItemImport;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Http\UploadedFile;
+use Maatwebsite\Excel\Facades\Excel;
+use Tests\TestCase;
+
+class InventoryTransferImportTest extends TestCase
+{
+    use RefreshDatabase;
+
+    protected $user;
+    protected $fromWarehouse;
+    protected $toWarehouse;
+    protected $order;
+    protected $product;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+        $this->user = User::create([
+            'name' => 'Test User',
+            'username' => 'testuser',
+            'email' => 'test@example.com',
+            'password' => bcrypt('password'),
+        ]);
+        $this->actingAs($this->user);
+
+        $this->fromWarehouse = Warehouse::create([
+            'code' => 'W1',
+            'name' => 'From Warehouse',
+            'type' => 'standard',
+        ]);
+        $this->toWarehouse = Warehouse::create([
+            'code' => 'W2',
+            'name' => 'To Warehouse',
+            'type' => 'standard',
+        ]);
+
+        $this->order = InventoryTransferOrder::create([
+            'doc_no' => 'TO' . time(),
+            'from_warehouse_id' => $this->fromWarehouse->id,
+            'to_warehouse_id' => $this->toWarehouse->id,
+            'status' => 'draft',
+            'created_by' => $this->user->id,
+        ]);
+
+        $this->product = Product::create([
+            'code' => 'P001',
+            'name' => 'Test Product',
+            'status' => 'enabled',
+        ]);
+    }
+
+    /** @test */
+    public function it_can_import_items_with_chinese_headers()
+    {
+        // 建立假 Excel，使用中文標題
+        $content = [
+            ['商品代碼', '批號', '數量', '備註'],
+            ['P001', 'BATCH001', '10', 'Imported Via Test'],
+            ['P001', '', '5', 'Batch should be NO-BATCH'],
+        ];
+
+        // 這裡我們直接呼叫 Import 類別來測試，避免多層模擬
+        $import = new InventoryTransferItemImport($this->order);
+        
+        // 我們模擬 Maatwebsite\Excel 傳入的 Collection
+        // 注意：Excel 預設會將標題 slugify。如果 "商品代碼" 被 slugify，我們的 Import 類別會在那邊掛掉。
+        // 所以這個測試可以幫我們確認 keys 是否如預期。
+        
+        // 如果 WithHeadingRow 是用 slug 處理，那 keys 會是 slug 化的版本。
+        // 但如果我們在 Import 類別中直接讀取 $row['商品代碼']，我們得確定它真的在那裡。
+        
+        $rows = collect([
+            collect(['商品代碼' => 'P001', '批號' => 'BATCH001', '數量' => '10', '備註' => 'Imported Via Test']),
+            collect(['商品代碼' => 'P001', '批號' => '', '數量' => '5', '備註' => 'Batch should be NO-BATCH']),
+        ]);
+
+        $import->collection($rows);
+
+        $this->assertDatabaseHas('inventory_transfer_items', [
+            'transfer_order_id' => $this->order->id,
+            'product_id' => $this->product->id,
+            'batch_number' => 'BATCH001',
+            'quantity' => 10,
+        ]);
+
+        $this->assertDatabaseHas('inventory_transfer_items', [
+            'transfer_order_id' => $this->order->id,
+            'product_id' => $this->product->id,
+            'batch_number' => 'NO-BATCH',
+            'quantity' => 5,
+        ]);
+    }
+}