From 5c8ab2080fd01d337365e4b94fd3be1a4f7f904a Mon Sep 17 00:00:00 2001
From: a2a-cloud <noreply@a2acloud.io>
Date: Sat, 18 Jul 2026 03:22:34 +0000
Subject: [PATCH] a2a-source-edit: write frontend/src/a2a.js

---
 frontend/src/a2a.js | 66 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 frontend/src/a2a.js

diff --git a/frontend/src/a2a.js b/frontend/src/a2a.js
new file mode 100644
index 0000000..0251692
--- /dev/null
+++ b/frontend/src/a2a.js
@@ -0,0 +1,66 @@
+export const CONFIG_URL = import.meta.env.DEV ? "/config.json" : "./config.json";
+
+export async function requestJson(url, init = {}) {
+  const response = await fetch(url, { credentials: "same-origin", ...init });
+  const text = await response.text();
+  let data = null;
+  try {
+    data = text ? JSON.parse(text) : null;
+  } catch {
+    data = { message: text };
+  }
+  if (!response.ok) {
+    const detail = data && (data.detail || data.message || data.error);
+    const err = new Error(detail || `request failed: ${response.status}`);
+    err.status = response.status;
+    throw err;
+  }
+  return data;
+}
+
+export async function loadAgentConfig() {
+  return requestJson(CONFIG_URL);
+}
+
+export async function loadSession(config) {
+  return requestJson(config.endpoints.session);
+}
+
+export function signInUrl(config) {
+  const target = config.auth?.authorizeUrl || config.auth?.loginUrl;
+  if (!target) return null;
+  const next = encodeURIComponent(
+    window.location.pathname + window.location.search + window.location.hash,
+  );
+  return `${target}${target.includes("?") ? "&" : "?"}next=${next}`;
+}
+
+export async function callSkill(config, skillName, args) {
+  return requestJson(`${config.endpoints.invoke}/${encodeURIComponent(skillName)}`, {
+    method: "POST",
+    headers: { "content-type": "application/json" },
+    body: JSON.stringify({ arguments: args }),
+  });
+}
+
+export async function fileToBrowserDocument(file, maxBytes = 128000) {
+  if (file.size > maxBytes) {
+    throw new Error(`${file.name} is too large. Upload files up to ${Math.round(maxBytes / 1000)} KB.`);
+  }
+  const mediaType = file.type || (file.name.endsWith(".json") ? "application/json" : file.name.endsWith(".csv") ? "text/csv" : "text/plain");
+  if (!["text/csv", "text/plain", "application/json"].includes(mediaType)) {
+    throw new Error(`${file.name} must be CSV, JSON, or plain text.`);
+  }
+  const buffer = await file.arrayBuffer();
+  let binary = "";
+  const bytes = new Uint8Array(buffer);
+  const chunkSize = 0x8000;
+  for (let i = 0; i < bytes.length; i += chunkSize) {
+    binary += String.fromCharCode(...bytes.subarray(i, i + chunkSize));
+  }
+  return {
+    filename: file.name,
+    media_type: mediaType,
+    data_base64: btoa(binary),
+  };
+}