update

dist/js/utils/cryptoUtils.js

@@ -0,0 +1,69 @@
+import { bytesToHex, sha256 } from "../../vendor/crypto-helpers.bundle.min.js";
+import { devLogger } from "./logger.js";
+
+let sharedTextEncoder = null;
+
+export function getSharedTextEncoder() {
+  if (!sharedTextEncoder && typeof TextEncoder !== "undefined") {
+    sharedTextEncoder = new TextEncoder();
+  }
+  return sharedTextEncoder;
+}
+
+const BlobConstructor = typeof Blob !== "undefined" ? Blob : null;
+
+export async function valueToUint8Array(value) {
+  if (!value) {
+    return null;
+  }
+
+  try {
+    if (
+      BlobConstructor &&
+      value instanceof BlobConstructor &&
+      typeof value.arrayBuffer === "function"
+    ) {
+      const buffer = await value.arrayBuffer();
+      return new Uint8Array(buffer);
+    }
+  } catch (error) {
+    devLogger.warn("[nostr] Failed to read Blob while computing hash:", error);
+    return null;
+  }
+
+  if (typeof ArrayBuffer !== "undefined") {
+    if (value instanceof ArrayBuffer) {
+      return new Uint8Array(value);
+    }
+    if (ArrayBuffer.isView?.(value)) {
+      return new Uint8Array(value.buffer, value.byteOffset, value.byteLength);
+    }
+  }
+
+  if (typeof Buffer !== "undefined" && Buffer.isBuffer?.(value)) {
+    return new Uint8Array(value.buffer, value.byteOffset, value.byteLength);
+  }
+
+  if (typeof value === "string") {
+    const encoder = getSharedTextEncoder();
+    return encoder ? encoder.encode(value) : null;
+  }
+
+  return null;
+}
+
+export async function computeSha256HexFromValue(value) {
+  const data = await valueToUint8Array(value);
+  if (!data) {
+    return "";
+  }
+
+  try {
+    const digest = sha256(data);
+    const hex = typeof digest === "string" ? digest : bytesToHex(digest);
+    return hex ? hex.toLowerCase() : "";
+  } catch (error) {
+    devLogger.warn("[nostr] Failed to compute SHA-256 for mirror payload:", error);
+    return "";
+  }
+}