fix(receipts): improve previews and localized scan results

.agents/memory.md

@@ -37,6 +37,9 @@ File này lưu trữ các quyết định thiết kế dài hạn và trạng th
 - **Upload file**: Browser tải file trực tiếp lên Cloudflare R2 bằng presigned PUT URL do backend
   cấp; không proxy binary qua API và không đưa R2 credentials vào frontend. Hiện luồng này chỉ áp
   dụng cho avatar JPEG/PNG/WebP tối đa 5 MB; chỉ cập nhật profile sau khi PUT thành công.
+- **Preview file local**: CSP của Mini App cho phép scheme `blob:` vì ảnh/PDF người dùng vừa chọn
+  và hóa đơn tải qua API được hiển thị bằng object URL. Mọi object URL do component tạo phải được
+  revoke khi file thay đổi hoặc component unmount.
 - **Crop avatar**: Trang hồ sơ mở trình chỉnh avatar khi chạm trực tiếp vào ảnh; điểm lấy nét X/Y
   được lưu trên profile và dùng nhất quán ở mọi nơi hiển thị avatar.
   Badge cây viết là lớp phủ không nhận pointer nằm ngoài button; vùng focus/active của button phải

index.html

@@ -4,7 +4,7 @@
     <meta charset="utf-8" />
     <meta
       http-equiv="Content-Security-Policy"
-      content="default-src * 'self' 'unsafe-inline' 'unsafe-eval' data: gap: content:"
+      content="default-src * 'self' 'unsafe-inline' 'unsafe-eval' data: blob: gap: content:"
     />
     <meta
       name="viewport"

src/pages/ai-assistant/components/ReceiptScannerView.tsx

@@ -5,12 +5,13 @@ import { Button } from "@/components/ui/Button";
 import { Card } from "@/components/ui/Card";
 import { useI18n } from "@/i18n";
 import { useExtractReceipt } from "@/hooks/use-ai-assistant";
+import { formatBusinessDate } from "@/lib/business-time";
 import { ExtractReceiptData } from "@/types/ai";
 import { AIErrorState } from "./AIErrorState";
 
 export const ReceiptScannerView: React.FC = () => {
   const navigate = useNavigate();
-  const { t } = useI18n();
+  const { formatCurrency, formatNumber, intlLocale, t } = useI18n();
   const extractMutation = useExtractReceipt();
 
   const fileInputRef = useRef<HTMLInputElement>(null);
@@ -20,10 +21,15 @@ export const ReceiptScannerView: React.FC = () => {
   const [fileError, setFileError] = useState<string | null>(null);
 
   useEffect(() => {
-    return () => {
-      if (previewUrl) URL.revokeObjectURL(previewUrl);
-    };
-  }, [previewUrl]);
+    if (!selectedFile?.type.startsWith("image/")) {
+      setPreviewUrl(null);
+      return;
+    }
+
+    const objectUrl = URL.createObjectURL(selectedFile);
+    setPreviewUrl(objectUrl);
+    return () => URL.revokeObjectURL(objectUrl);
+  }, [selectedFile]);
 
   const handleFileSelected = (file: File) => {
     extractMutation.reset();
@@ -40,11 +46,6 @@ export const ReceiptScannerView: React.FC = () => {
     }
 
     setSelectedFile(file);
-    if (file.type.startsWith("image/")) {
-      setPreviewUrl(URL.createObjectURL(file));
-    } else {
-      setPreviewUrl(null);
-    }
     setExtractedData(null);
 
     // Auto trigger extraction
@@ -126,6 +127,21 @@ export const ReceiptScannerView: React.FC = () => {
         : "border-clay-expense/30 bg-clay-expense/20 text-clay-expense"
     : "";
 
+  const receiptCurrency = extractedData?.currency || "VND";
+  const formatReceiptMoney = (value: string | null): string => {
+    if (value === null) return "—";
+    const amount = Number(value);
+    return Number.isFinite(amount) ? formatCurrency(amount, receiptCurrency) : "—";
+  };
+
+  const formattedTransactionDate = extractedData?.transactionDate
+    ? formatBusinessDate(extractedData.transactionDate, intlLocale, {
+        day: "2-digit",
+        month: "2-digit",
+        year: "numeric",
+      })
+    : "—";
+
   return (
     <div className="flex flex-col gap-4 pb-8">
       {/* Upload Header Card */}
@@ -182,7 +198,10 @@ export const ReceiptScannerView: React.FC = () => {
                   {selectedFile.name}
                 </span>
                 <span className="clay-caption text-[10px]">
-                  {(selectedFile.size / 1024 / 1024).toFixed(2)} MB
+                  {formatNumber(selectedFile.size / 1024 / 1024, {
+                    minimumFractionDigits: 2,
+                    maximumFractionDigits: 2,
+                  })} MB
                 </span>
               </div>
             </div>
@@ -202,6 +221,16 @@ export const ReceiptScannerView: React.FC = () => {
             {fileError}
           </p>
         )}
+
+        {previewUrl && (
+          <div className="mt-3 overflow-hidden rounded-clay bg-clay-bg p-3 shadow-clay-pressed border border-clay-highlight/30">
+            <img
+              src={previewUrl}
+              alt={t("ai.ocr.previewAlt")}
+              className="mx-auto max-h-64 w-full rounded-clay-sm object-contain"
+            />
+          </div>
+        )}
       </Card>
 
       {/* Extracting Loading Indicator */}
@@ -233,7 +262,10 @@ export const ReceiptScannerView: React.FC = () => {
                 {t("ai.ocr.resultTitle")}
               </h4>
               <span className={`shrink-0 rounded-full border px-3 py-1 font-baloo text-xs font-bold shadow-clay-pressed ${confidenceClassName}`}>
-                {t("ai.ocr.confidence")}: {Math.round(extractedData.confidence * 100)}%
+                {t("ai.ocr.confidence")}: {formatNumber(extractedData.confidence, {
+                  style: "percent",
+                  maximumFractionDigits: 0,
+                })}
               </span>
             </div>
 
@@ -252,8 +284,7 @@ export const ReceiptScannerView: React.FC = () => {
                   {t("ai.ocr.totalAmount")}
                 </span>
                 <span className="break-words font-baloo text-base font-bold text-clay-expense">
-                  {extractedData.totalAmount || "0"}{" "}
-                  {extractedData.currency || "VND"}
+                  {formatReceiptMoney(extractedData.totalAmount)}
                 </span>
               </div>
 
@@ -262,7 +293,7 @@ export const ReceiptScannerView: React.FC = () => {
                   {t("ai.ocr.date")}
                 </span>
                 <span className="font-nunito text-sm font-bold text-clay-text">
-                  {extractedData.transactionDate || "—"}
+                  {formattedTransactionDate}
                 </span>
               </div>
 
@@ -280,8 +311,7 @@ export const ReceiptScannerView: React.FC = () => {
                   {t("ai.ocr.taxAmount")}
                 </span>
                 <span className="break-words font-baloo text-sm font-bold text-clay-text">
-                  {extractedData.taxAmount || "—"}
-                  {extractedData.taxAmount ? ` ${extractedData.currency || "VND"}` : ""}
+                  {formatReceiptMoney(extractedData.taxAmount)}
                 </span>
               </div>
             </div>
@@ -306,9 +336,17 @@ export const ReceiptScannerView: React.FC = () => {
                       {extractedData.lineItems.map((item, i) => (
                         <tr key={i}>
                           <td className="py-2 text-clay-text font-medium">{item.name}</td>
-                          <td className="py-2 text-center text-clay-text-muted">{item.quantity ?? 1}</td>
-                          <td className="py-2 text-right text-clay-text-muted">{item.unitPrice || "—"}</td>
-                          <td className="py-2 text-right font-bold text-clay-text">{item.totalAmount || "—"}</td>
+                          <td className="py-2 text-center text-clay-text-muted">
+                            {item.quantity === null
+                              ? "—"
+                              : formatNumber(item.quantity, { maximumFractionDigits: 2 })}
+                          </td>
+                          <td className="py-2 text-right text-clay-text-muted">
+                            {formatReceiptMoney(item.unitPrice)}
+                          </td>
+                          <td className="py-2 text-right font-bold text-clay-text">
+                            {formatReceiptMoney(item.totalAmount)}
+                          </td>
                         </tr>
                       ))}
                     </tbody>

src/pages/transactions/components/TransactionDetailModal.tsx

@@ -37,6 +37,8 @@ export const TransactionDetailModal: React.FC<TransactionDetailModalProps> = ({
   const [receiptType, setReceiptType] = useState<string | null>(null);
   const [isReceiptLoading, setIsReceiptLoading] = useState(false);
   const [receiptError, setReceiptError] = useState(false);
+  const [hasReceipt, setHasReceipt] = useState(false);
+  const [receiptRevision, setReceiptRevision] = useState(0);
 
   // Receipt mutations
   const uploadReceiptMutation = useUploadReceipt(transaction?.id || "");
@@ -45,13 +47,17 @@ export const TransactionDetailModal: React.FC<TransactionDetailModalProps> = ({
   useEffect(() => {
     if (isOpen) {
       setShowConfirmDelete(false);
+      setHasReceipt(Boolean(transaction?.receiptUrl));
+      setReceiptRevision(0);
     }
-  }, [isOpen]);
+  }, [isOpen, transaction?.id]);
 
   useEffect(() => {
-    if (!isOpen || !transaction?.receiptUrl) {
+    if (!isOpen || !transaction || !hasReceipt) {
       setReceiptObjectURL(null);
       setReceiptType(null);
+      setIsReceiptLoading(false);
+      setReceiptError(false);
       return;
     }
 
@@ -82,7 +88,7 @@ export const TransactionDetailModal: React.FC<TransactionDetailModalProps> = ({
         URL.revokeObjectURL(objectUrl);
       }
     };
-  }, [transaction?.id, transaction?.receiptUrl, isOpen]);
+  }, [transaction?.id, hasReceipt, isOpen, receiptRevision]);
 
   if (!transaction) return null;
 
@@ -97,6 +103,8 @@ export const TransactionDetailModal: React.FC<TransactionDetailModalProps> = ({
 
     uploadReceiptMutation.mutate(file, {
       onSuccess: () => {
+        setHasReceipt(true);
+        setReceiptRevision((revision) => revision + 1);
         openSnackbar({ type: "success", text: t("transaction.receiptUploadSuccess") });
       },
       onError: (error) => {
@@ -111,6 +119,7 @@ export const TransactionDetailModal: React.FC<TransactionDetailModalProps> = ({
   const handleDeleteReceipt = () => {
     deleteReceiptMutation.mutate(undefined, {
       onSuccess: () => {
+        setHasReceipt(false);
         openSnackbar({ type: "success", text: t("transaction.receiptDeleteSuccess") });
       },
       onError: (error) => {
@@ -274,7 +283,7 @@ export const TransactionDetailModal: React.FC<TransactionDetailModalProps> = ({
               disabled={uploadReceiptMutation.isPending}
             />
 
-            {transaction.receiptUrl && !isReceiptLoading && (
+            {hasReceipt && !isReceiptLoading && (
               <div className="flex items-center gap-2">
                 <button
                   type="button"

src/pages/transactions/components/TransactionFormModal.tsx

@@ -134,6 +134,7 @@ export const TransactionFormModal: React.FC<TransactionFormModalProps> = ({
   const { t, intlLocale } = useI18n();
   const fileInputRef = useRef<HTMLInputElement>(null);
   const [selectedFile, setSelectedFile] = useState<File | null>(initialReceiptFile || null);
+  const [selectedFilePreviewUrl, setSelectedFilePreviewUrl] = useState<string | null>(null);
   const [fileError, setFileError] = useState<string | null>(null);
   const [deleteCurrentReceipt, setDeleteCurrentReceipt] = useState(false);
 
@@ -198,6 +199,17 @@ export const TransactionFormModal: React.FC<TransactionFormModalProps> = ({
     }
   }, [defaultValues, initialReceiptFile, isOpen, reset]);
 
+  useEffect(() => {
+    if (!selectedFile?.type.startsWith("image/")) {
+      setSelectedFilePreviewUrl(null);
+      return;
+    }
+
+    const objectUrl = URL.createObjectURL(selectedFile);
+    setSelectedFilePreviewUrl(objectUrl);
+    return () => URL.revokeObjectURL(objectUrl);
+  }, [selectedFile]);
+
   const selectedType = watch("type") as TransactionType;
   const selectedWalletId = watch("walletId");
   const selectedCategoryId = watch("categoryId");
@@ -466,23 +478,46 @@ export const TransactionFormModal: React.FC<TransactionFormModalProps> = ({
 
           {selectedFile ? (
             /* User selected a new file locally */
-            <div className="flex items-center justify-between rounded-clay bg-clay-primary/10 p-3 shadow-clay-pressed border border-clay-primary/20">
-              <div className="flex flex-col min-w-0 pr-2">
-                <span className="font-nunito text-sm font-bold text-clay-text truncate">
-                  {selectedFile.name}
-                </span>
-                <span className="clay-caption">
-                  {(selectedFile.size / 1024 / 1024).toFixed(2)} MB
-                </span>
+            <div className="flex flex-col gap-3 rounded-clay bg-clay-primary/10 p-3 shadow-clay-pressed border border-clay-primary/20">
+              <div className="flex items-center justify-between">
+                <div className="flex min-w-0 items-center gap-3 pr-2">
+                  {selectedFilePreviewUrl ? (
+                    <img
+                      src={selectedFilePreviewUrl}
+                      alt={t("transaction.receipt")}
+                      className="h-12 w-12 shrink-0 rounded-clay-sm border border-clay-primary/20 object-cover"
+                    />
+                  ) : (
+                    <div className="flex h-12 w-12 shrink-0 items-center justify-center rounded-clay-sm bg-clay-primary/10 font-baloo text-xs font-bold text-clay-primary shadow-clay-pressed">
+                      PDF
+                    </div>
+                  )}
+                  <div className="flex min-w-0 flex-col">
+                    <span className="truncate font-nunito text-sm font-bold text-clay-text">
+                      {selectedFile.name}
+                    </span>
+                    <span className="clay-caption">
+                      {(selectedFile.size / 1024 / 1024).toFixed(2)} MB
+                    </span>
+                  </div>
+                </div>
+                <button
+                  type="button"
+                  aria-label={t("common.delete")}
+                  className="flex h-8 w-8 shrink-0 items-center justify-center rounded-full bg-clay-expense text-white shadow-clay-raised hover:scale-105 transition-all duration-200"
+                  onClick={removeSelectedFile}
+                  disabled={isSubmitting}
+                >
+                  ✕
+                </button>
               </div>
-              <button
-                type="button"
-                className="flex h-8 w-8 items-center justify-center rounded-full bg-clay-expense text-white shadow-clay-raised hover:scale-105 transition-all duration-200"
-                onClick={removeSelectedFile}
-                disabled={isSubmitting}
-              >
-                ✕
-              </button>
+              {selectedFilePreviewUrl && (
+                <img
+                  src={selectedFilePreviewUrl}
+                  alt={t("transaction.receipt")}
+                  className="max-h-56 w-full rounded-clay-sm border border-clay-highlight/20 object-contain"
+                />
+              )}
             </div>
           ) : transaction?.receiptUrl && !deleteCurrentReceipt ? (
             /* Transaction already has a receipt, show replace or delete controls */