feat:add Finds feature with media upload and R2 support

src/lib/server/media-processor.ts

@@ -0,0 +1,68 @@
+import sharp from 'sharp';
+import { uploadToR2 } from './r2';
+
+const THUMBNAIL_SIZE = 400;
+const MAX_IMAGE_SIZE = 1920;
+
+export async function processAndUploadImage(
+	file: File,
+	findId: string,
+	index: number
+): Promise<{ url: string; thumbnailUrl: string }> {
+	const buffer = Buffer.from(await file.arrayBuffer());
+
+	// Generate unique filename
+	const timestamp = Date.now();
+	const filename = `finds/${findId}/image-${index}-${timestamp}`;
+
+	// Process full-size image (resize if too large, optimize)
+	const processedImage = await sharp(buffer)
+		.resize(MAX_IMAGE_SIZE, MAX_IMAGE_SIZE, {
+			fit: 'inside',
+			withoutEnlargement: true
+		})
+		.jpeg({ quality: 85, progressive: true })
+		.toBuffer();
+
+	// Generate thumbnail
+	const thumbnail = await sharp(buffer)
+		.resize(THUMBNAIL_SIZE, THUMBNAIL_SIZE, {
+			fit: 'cover',
+			position: 'centre'
+		})
+		.jpeg({ quality: 80 })
+		.toBuffer();
+
+	// Upload both to R2
+	const imageFile = new File([new Uint8Array(processedImage)], `${filename}.jpg`, {
+		type: 'image/jpeg'
+	});
+	const thumbFile = new File([new Uint8Array(thumbnail)], `${filename}-thumb.jpg`, {
+		type: 'image/jpeg'
+	});
+
+	const [url, thumbnailUrl] = await Promise.all([
+		uploadToR2(imageFile, `${filename}.jpg`, 'image/jpeg'),
+		uploadToR2(thumbFile, `${filename}-thumb.jpg`, 'image/jpeg')
+	]);
+
+	return { url, thumbnailUrl };
+}
+
+export async function processAndUploadVideo(
+	file: File,
+	findId: string,
+	index: number
+): Promise<{ url: string; thumbnailUrl: string }> {
+	const timestamp = Date.now();
+	const filename = `finds/${findId}/video-${index}-${timestamp}.mp4`;
+
+	// Upload video directly (no processing on server to save resources)
+	const url = await uploadToR2(file, filename, 'video/mp4');
+
+	// For video thumbnail, generate on client-side or use placeholder
+	// This keeps server-side processing minimal
+	const thumbnailUrl = `/video-placeholder.jpg`; // Use static placeholder
+
+	return { url, thumbnailUrl };
+}