feat:add Finds feature with media upload and R2 support

src/routes/api/finds/upload/+server.ts

@@ -0,0 +1,52 @@
+import { json, error } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
+import { processAndUploadImage, processAndUploadVideo } from '$lib/server/media-processor';
+import { encodeBase64url } from '@oslojs/encoding';
+
+const MAX_FILE_SIZE = 100 * 1024 * 1024; // 100MB
+const MAX_FILES = 5;
+const ALLOWED_IMAGE_TYPES = ['image/jpeg', 'image/png', 'image/webp'];
+const ALLOWED_VIDEO_TYPES = ['video/mp4', 'video/quicktime'];
+
+function generateFindId(): string {
+	const bytes = crypto.getRandomValues(new Uint8Array(15));
+	return encodeBase64url(bytes);
+}
+
+export const POST: RequestHandler = async ({ request, locals }) => {
+	if (!locals.user) {
+		throw error(401, 'Unauthorized');
+	}
+
+	const formData = await request.formData();
+	const files = formData.getAll('files') as File[];
+	const findId = (formData.get('findId') as string) || generateFindId(); // Generate if creating new Find
+
+	if (files.length === 0 || files.length > MAX_FILES) {
+		throw error(400, `Must upload between 1 and ${MAX_FILES} files`);
+	}
+
+	const uploadedMedia: Array<{ type: string; url: string; thumbnailUrl: string }> = [];
+
+	for (let i = 0; i < files.length; i++) {
+		const file = files[i];
+
+		// Validate file size
+		if (file.size > MAX_FILE_SIZE) {
+			throw error(400, `File ${file.name} exceeds maximum size of 100MB`);
+		}
+
+		// Process based on type
+		if (ALLOWED_IMAGE_TYPES.includes(file.type)) {
+			const result = await processAndUploadImage(file, findId, i);
+			uploadedMedia.push({ type: 'photo', ...result });
+		} else if (ALLOWED_VIDEO_TYPES.includes(file.type)) {
+			const result = await processAndUploadVideo(file, findId, i);
+			uploadedMedia.push({ type: 'video', ...result });
+		} else {
+			throw error(400, `File type ${file.type} not allowed`);
+		}
+	}
+
+	return json({ findId, media: uploadedMedia });
+};