Feat : Skills

open-sse/handlers/imageProviders/_base.js

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+// Shared helpers for image provider adapters
+
+export const POLL_INTERVAL_MS = 1500;
+export const POLL_TIMEOUT_MS = 120000;
+
+export const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+
+// Map OpenAI size to provider-specific aspect ratio
+export function sizeToAspectRatio(size) {
+  if (!size || typeof size !== "string") return "1:1";
+  const map = {
+    "1024x1024": "1:1",
+    "1024x1792": "9:16",
+    "1792x1024": "16:9",
+    "1024x1536": "2:3",
+    "1536x1024": "3:2",
+  };
+  return map[size] || "1:1";
+}
+
+// Fetch URL → base64 (for providers returning image URLs)
+export async function urlToBase64(url) {
+  const res = await fetch(url);
+  if (!res.ok) throw new Error(`Failed to fetch image: ${res.status}`);
+  const buf = await res.arrayBuffer();
+  return Buffer.from(buf).toString("base64");
+}
+
+export function nowSec() {
+  return Math.floor(Date.now() / 1000);
+}