Initial commit with translated description

scripts/shared/storage/did.js

@@ -0,0 +1,47 @@
+const { FileStorage } = require("./base");
+
+/**
+ * DidsFileStorage manages DID entries with default DID support
+ */
+class DidsFileStorage extends FileStorage {
+  constructor(filename = "defaultDid.json") {
+    super(filename);
+  }
+
+  async save({ did, publicKeyHex, isDefault = false }) {
+    const entries = await this.readFile();
+
+    // If setting this as default, unset all other defaults
+    if (isDefault) {
+      entries.forEach((entry) => {
+        entry.isDefault = false;
+      });
+    }
+
+    const index = entries.findIndex((entry) => entry.did === did);
+
+    if (index >= 0) {
+      entries[index] = { did, publicKeyHex, isDefault };
+    } else {
+      entries.push({ did, publicKeyHex, isDefault });
+    }
+
+    await this.writeFile(entries);
+  }
+
+  async find(did) {
+    const entries = await this.readFile();
+    return entries.find((entry) => entry.did === did);
+  }
+
+  async getDefault() {
+    const entries = await this.readFile();
+    return entries.find((entry) => entry.isDefault);
+  }
+
+  async list() {
+    return this.readFile();
+  }
+}
+
+module.exports = { DidsFileStorage };