init source

utils/formatDate.ts

@@ -0,0 +1,41 @@
+export const formatDate = (
+  date: Date | string,
+  options?: Intl.DateTimeFormatOptions
+): string => {
+  const dateObj = typeof date === "string" ? new Date(date) : date;
+
+  const defaultOptions: Intl.DateTimeFormatOptions = {
+    year: "numeric",
+    month: "long",
+    day: "numeric",
+  };
+
+  return dateObj.toLocaleDateString("ko-KR", { ...defaultOptions, ...options });
+};
+
+export const formatRelativeTime = (date: Date | string): string => {
+  const dateObj = typeof date === "string" ? new Date(date) : date;
+  const now = new Date();
+  const diffInSeconds = Math.floor((now.getTime() - dateObj.getTime()) / 1000);
+
+  if (diffInSeconds < 60) {
+    return "방금 전";
+  }
+
+  const diffInMinutes = Math.floor(diffInSeconds / 60);
+  if (diffInMinutes < 60) {
+    return `${diffInMinutes}분 전`;
+  }
+
+  const diffInHours = Math.floor(diffInMinutes / 60);
+  if (diffInHours < 24) {
+    return `${diffInHours}시간 전`;
+  }
+
+  const diffInDays = Math.floor(diffInHours / 24);
+  if (diffInDays < 7) {
+    return `${diffInDays}일 전`;
+  }
+
+  return formatDate(dateObj);
+};