Store and show request body in UI (#327)

src-web/hooks/useHttpRequestBody.ts

@@ -0,0 +1,32 @@
+import { useQuery } from '@tanstack/react-query';
+import type { HttpResponse } from '@yaakapp-internal/models';
+import { invokeCmd } from '../lib/tauri';
+
+export function useHttpRequestBody(response: HttpResponse | null) {
+  return useQuery({
+    placeholderData: (prev) => prev, // Keep previous data on refetch
+    queryKey: ['request_body', response?.id, response?.state, response?.requestContentLength],
+    enabled: (response?.requestContentLength ?? 0) > 0,
+    queryFn: async () => {
+      return getRequestBodyText(response);
+    },
+  });
+}
+
+export async function getRequestBodyText(response: HttpResponse | null) {
+  if (response?.id == null) {
+    return null;
+  }
+
+  const data = await invokeCmd<number[] | null>('cmd_http_request_body', {
+    responseId: response.id,
+  });
+
+  if (data == null) {
+    return null;
+  }
+
+  const body = new Uint8Array(data);
+  const bodyText = new TextDecoder('utf-8', { fatal: false }).decode(body);
+  return { body, bodyText };
+}