From 730da864a41504981e1491fd3d4a309a651164da Mon Sep 17 00:00:00 2001
From: caadiq <caadiq@gmail.com>
Date: Fri, 6 Feb 2026 21:56:27 +0900
Subject: [PATCH] =?UTF-8?q?fix:=20YouTube=20=EB=B4=87=20fetchRecentVideos?=
 =?UTF-8?q?=EB=A5=BC=20Activities=20API=EB=A1=9C=20=EB=B3=80=EA=B2=BD?=
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- playlistItems API 대신 Activities API 사용
- playlistItems는 새 영상 반영이 지연되는 문제가 있었음
- Activities API는 새 업로드를 즉시 반영함
- upload 외 다른 활동(좋아요, 플레이리스트 등)도 포함되므로 2배로 조회 후 필터링
- API 할당량 비용은 동일 (1 단위)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 backend/src/services/youtube/api.js | 44 ++++++++++++++++++++---------
 1 file changed, 31 insertions(+), 13 deletions(-)

diff --git a/backend/src/services/youtube/api.js b/backend/src/services/youtube/api.js
index 5ace974..90d6455 100644
--- a/backend/src/services/youtube/api.js
+++ b/backend/src/services/youtube/api.js
@@ -94,15 +94,15 @@ async function getVideoDurations(videoIds) {
 }
 
 /**
- * 최근 N개 영상 조회
+ * 최근 N개 영상 조회 (Activities API 사용 - playlistItems보다 빠른 반영)
  * @param {string} channelId - 채널 ID
  * @param {number} maxResults - 최대 결과 수
- * @param {string} uploadsPlaylistId - 캐싱된 uploads playlist ID (선택)
+ * @param {string} uploadsPlaylistId - 미사용 (하위 호환성 유지)
  */
 export async function fetchRecentVideos(channelId, maxResults = 10, uploadsPlaylistId = null) {
-  const uploadsId = uploadsPlaylistId || await getUploadsPlaylistId(channelId);
-
-  const url = `${API_BASE}/playlistItems?part=snippet&playlistId=${uploadsId}&maxResults=${maxResults}&key=${API_KEY}`;
+  // Activities API에 type=upload 지정 (다른 활동이 섞일 수 있어 2배 조회)
+  const fetchCount = Math.min(maxResults * 2, 50);
+  const url = `${API_BASE}/activities?part=snippet,contentDetails&channelId=${channelId}&type=upload&maxResults=${fetchCount}&key=${API_KEY}`;
   const res = await fetch(url);
   const data = await res.json();
 
@@ -110,17 +110,35 @@ export async function fetchRecentVideos(channelId, maxResults = 10, uploadsPlayl
     throw new Error(data.error.message);
   }
 
-  const videoIds = data.items.map(item => item.snippet.resourceId.videoId);
-  const shortsMap = await getVideoDurations(videoIds);
+  // 'upload' 타입만 필터링 (API가 완벽히 필터링하지 않을 수 있음)
+  const uploadItems = (data.items || [])
+    .filter(item => item.snippet.type === 'upload')
+    .slice(0, maxResults);
 
-  return data.items.map(item => {
-    const { snippet } = item;
-    const videoId = snippet.resourceId.videoId;
-    const isShorts = shortsMap[videoId] || false;
+  if (uploadItems.length === 0) {
+    return [];
+  }
+
+  // video ID 목록 추출
+  const videoIds = uploadItems.map(item => item.contentDetails.upload.videoId);
+
+  // videos API로 상세 정보 조회 (duration, description 등)
+  const videosUrl = `${API_BASE}/videos?part=snippet,contentDetails&id=${videoIds.join(',')}&key=${API_KEY}`;
+  const videosRes = await fetch(videosUrl);
+  const videosData = await videosRes.json();
+
+  if (videosData.error) {
+    throw new Error(videosData.error.message);
+  }
+
+  return (videosData.items || []).map(video => {
+    const { snippet, contentDetails } = video;
+    const seconds = parseDuration(contentDetails.duration);
+    const isShorts = seconds > 0 && seconds <= 60;
     const publishedAt = new Date(snippet.publishedAt);
 
     return {
-      videoId,
+      videoId: video.id,
       title: snippet.title,
       description: snippet.description || '',
       channelId: snippet.channelId,
@@ -129,7 +147,7 @@ export async function fetchRecentVideos(channelId, maxResults = 10, uploadsPlayl
       date: formatDate(publishedAt),
       time: formatTime(publishedAt),
       videoType: isShorts ? 'shorts' : 'video',
-      videoUrl: getVideoUrl(videoId, isShorts),
+      videoUrl: getVideoUrl(video.id, isShorts),
     };
   });
 }