[FE] FEAT: 반응형 thumbnail 추가 #233

src/frontend/src/components/MyRoomCard/index.css.ts

@@ -10,7 +10,7 @@ export const Card = styled.div`
 `;
 
 export const Thumbnail = styled.div`
-  width: 124px;
+  width: 120px;
   flex-shrink: 0;
   aspect-ratio: 16 / 9;
   border-radius: 0.625rem;

src/frontend/src/components/MyRoomCard/index.tsx

@@ -1,4 +1,4 @@
-import { useState } from 'react';
+import { useEffect, useState } from 'react';
 import UserIcon from '@/assets/img/UsersLine.svg';
 import TrashcanIcon from '@/assets/img/Trashcan.svg';
 import ShareIcon from '@/assets/img/ShareLink.svg';
@@ -17,12 +17,25 @@ import {
   Title,
   UserCount,
 } from './index.css';
+import { getYoutubeThumbnail } from '@/utils/youtubeUtils';
 
 export const MyRoomCard = ({ room }: { room: MyRoomDto }) => {
   const [isHovered, setIsHovered] = useState(false);
   const [isClickDelete, setIsClickDelete] = useState(false);
+  const [thumbnail, setThumbnail] = useState<string>(DefaultThumbnail);
   const navigate = useNavigate();
 
+  useEffect(() => {
+    if (!room.playlistUrl) return;
+
+    const fetchThumbnail = async () => {
+      const url = await getYoutubeThumbnail(room.playlistUrl ?? '', 'default');
+      setThumbnail(url ?? DefaultThumbnail);
+    };
+
+    fetchThumbnail();
+  }, [room.playlistUrl]);
+
   const handleClick = (e: React.MouseEvent<HTMLDivElement>) => {
     e.stopPropagation();
     navigate(`/room?code=${room.code}`);
@@ -60,7 +73,7 @@ export const MyRoomCard = ({ room }: { room: MyRoomDto }) => {
         onMouseLeave={() => setIsHovered(false)}
       >
         <Thumbnail>
-          <img src={room.playlistUrl ? room.playlistUrl : DefaultThumbnail} alt={room.title} />
+          <img src={thumbnail} alt={room.title} />
         </Thumbnail>
         <Info>
           <div>

src/frontend/src/components/Sidebar/Playlist/PlaylistItem/index.css.ts

@@ -14,7 +14,7 @@ export const Container = styled.div<VideoItemContainerProps>`
   border-radius: 5px;
   background-color: ${({ $isPreview }) =>
     $isPreview ? 'var(--palette-line-normal-normal)' : 'var(--palette-static-white)'};
-  border: 1px solid #ddd
+  border: 1px solid #ddd;
   cursor: pointer;
   position: relative;
   transition: all 0.2s ease;
@@ -38,7 +38,7 @@ export const Container = styled.div<VideoItemContainerProps>`
     transition: transform 0.2s ease;
   }
 
-   &:hover .button-container {
+  &:hover .button-container {
     opacity: ${({ $isDragging }) => ($isDragging ? 0 : 1)};
     visibility: ${({ $isDragging }) => ($isDragging ? 'hidden' : 'visible')};
   }

src/frontend/src/components/VideoCard/index.css.ts

@@ -1,3 +1,4 @@
+import { getYoutubeThumbnail } from '@/utils/youtubeUtils';
 import { styled } from 'styled-components';
 
 export const VideoCardContainer = styled.div`
@@ -14,7 +15,7 @@ export const VideoCardContainer = styled.div`
   }
 `;
 
-export const Thumbnail = styled.div`
+export const Thumbnail = styled.div<{ $playlistUrl: string | undefined }>`
   width: 100%;
   aspect-ratio: 16 / 9;
   border-radius: 0.625rem;
@@ -25,6 +26,25 @@ export const Thumbnail = styled.div`
     width: 100%;
     height: 100%;
     object-fit: cover;
+    content: url(${props => getYoutubeThumbnail(props.$playlistUrl, 'maxres')});
+  }
+
+  @media (max-width: 639px) {
+    & > img {
+      content: url(${props => getYoutubeThumbnail(props.$playlistUrl, 'sd')});
+    }
+  }
+
+  @media (max-width: 479px) {
+    & > img {
+      content: url(${props => getYoutubeThumbnail(props.$playlistUrl, 'hq')});
+    }
+  }
+
+  @media (max-width: 319px) {
+    & > img {
+      content: url(${props => getYoutubeThumbnail(props.$playlistUrl, 'mq')});
+    }
   }
 `;
 

src/frontend/src/components/VideoCard/index.tsx

@@ -10,17 +10,32 @@ import {
 import { RoomDto } from '@/api/endpoints/room/room.interface';
 import DefaultThumbnail from '@/assets/img/DefaultThumbnail.svg';
 import DefaultProfile from '@/assets/img/DefaultProfile.svg';
+import { getYoutubeThumbnail } from '@/utils/youtubeUtils';
+import { useEffect, useState } from 'react';
 interface IVideoCard {
   video: RoomDto;
   onClick?: () => void;
 }
 
 export const VideoCard = ({ video, onClick }: IVideoCard) => {
+  const [thumbnail, setThumbnail] = useState<string>(DefaultThumbnail);
+
+  useEffect(() => {
+    if (!video.playlistUrl) return;
+
+    const fetchThumbnail = async () => {
+      const url = await getYoutubeThumbnail(video.playlistUrl ?? '', 'hq');
+      setThumbnail(url ?? DefaultThumbnail);
+    };
+
+    fetchThumbnail();
+  }, [video.playlistUrl]);
+
   return (
     <VideoCardContainer onClick={onClick}>
-      <Thumbnail>
+      <Thumbnail $playlistUrl={video.playlistUrl}>
         <UserCount>{video.userCount}명</UserCount>
-        <img src={video.playlistUrl ? video.playlistUrl : DefaultThumbnail} alt={video.title} />
+        <img src={thumbnail} alt={video.title} />
       </Thumbnail>
       <VideoInfo>
         <Profile>

src/frontend/src/utils/youtubeUtils.ts

@@ -0,0 +1,29 @@
+export const getYoutubeVideoInfo = async (videoId: string) => {
+  const response = await fetch(
+    `https://www.googleapis.com/youtube/v3/videos?part=snippet&id=${videoId}&key=${import.meta.env.VITE_YOUTUBE_API_KEY}`,
+  );
+  const data = await response.json();
+  return data;
+};
+
+// 유튜브 썸네일 이미지 가져오기
+// maxres: 1280p, sd: 640p, hq: 480p, mq: 320p, default: 120p
+export const getYoutubeThumbnail = (
+  url: string | undefined,
+  quality: 'default' | 'mq' | 'hq' | 'sd' | 'maxres',
+): string | undefined => {
+  if (!url) return undefined;
+
+  const videoId = url.split('v=')[1];
+  if (!videoId) return url;
+
+  const qualityMap = {
+    maxres: 'maxresdefault',
+    sd: 'sddefault',
+    hq: 'hqdefault',
+    mq: 'mqdefault',
+    default: 'default',
+  };
+
+  return `https://img.youtube.com/vi/${videoId}/${qualityMap[quality]}.jpg`;
+};