修正日期時區偏移導致顯示少一天的問題

resources/js/utils/format.ts

@@ -21,7 +21,17 @@ export const formatCurrency = (num: number): string => {
  */
 export const formatDate = (date: string): string => {
   if (!date) return "-";
-  return new Date(date).toLocaleDateString("zh-TW");
+  const datePart = date.split("T")[0].split(" ")[0];
+  const parts = datePart.split("-").map(Number);
+  if (parts.length < 3 || parts.some(isNaN)) return date;
+
+  const [y, m, d] = parts;
+  const dt = new Date(y, m - 1, d, 12, 0, 0);
+  const year = dt.getFullYear();
+  const month = String(dt.getMonth() + 1).padStart(2, '0');
+  const day = String(dt.getDate()).padStart(2, '0');
+
+  return `${year}/${month}/${day}`;
 };
 
 /**
@@ -29,12 +39,19 @@ export const formatDate = (date: string): string => {
  */
 export const formatDateWithDayOfWeek = (date: string): string => {
   if (!date) return "-";
-  return new Date(date).toLocaleDateString("zh-TW", {
-    year: "numeric",
-    month: "2-digit",
-    day: "2-digit",
-    weekday: "short",
-  });
+  const datePart = date.split("T")[0].split(" ")[0];
+  const parts = datePart.split("-").map(Number);
+  if (parts.length < 3 || parts.some(isNaN)) return date;
+
+  const [y, m, d] = parts;
+  const dt = new Date(y, m - 1, d, 12, 0, 0);
+
+  const year = dt.getFullYear();
+  const month = String(dt.getMonth() + 1).padStart(2, '0');
+  const day = String(dt.getDate()).padStart(2, '0');
+  const weekDay = dt.toLocaleDateString("zh-TW", { weekday: "short" });
+
+  return `${year}/${month}/${day} (${weekDay})`;
 };
 
 /**
@@ -54,7 +71,11 @@ export const formatInvoiceNumber = (invoice: string | null | undefined): string
  * 獲取當前日期（YYYY-MM-DD 格式）
  */
 export const getCurrentDate = (): string => {
-  return new Date().toISOString().split("T")[0];
+  const now = new Date();
+  const year = now.getFullYear();
+  const month = String(now.getMonth() + 1).padStart(2, "0");
+  const day = String(now.getDate()).padStart(2, "0");
+  return `${year}-${month}-${day}`;
 };
 
 /**