initial commit

src/utils/fetch-file-from-input.ts

@@ -0,0 +1,28 @@
+import { NDKTag } from '@nostr-dev-kit/ndk';
+import axios from 'axios';
+import fs from 'fs';
+
+export async function fetchFileFromInput(input: NDKTag): Promise<string> {
+    switch (input[2]) {
+        case 'url': {
+            const url = input[1];
+            const fileExtension = url.split('.').pop();
+
+            // download the file
+            // save it to the local filesystem
+            // return the path to the file
+            const response = await axios.get(url, {
+                responseType: 'stream'
+            });
+
+            const randomName = Math.random().toString(36).substring(7);
+            const path = `./${randomName}.${fileExtension}`;
+
+            await response.data.pipe(fs.createWriteStream(path));
+
+            return path;
+        }
+    }
+
+    return undefined;
+}