Oasis 0.8.7 mobile (nodejs-project baseline)

src/backend/wallet_addresses.js

@@ -0,0 +1,17 @@
+const fs = require("fs");
+const path = require("path");
+
+const STORAGE_DIR = path.join(__dirname, "..", "configs");
+const ADDR_PATH = path.join(STORAGE_DIR, "wallet-addresses.json");
+
+function ensure() {
+  if (!fs.existsSync(STORAGE_DIR)) fs.mkdirSync(STORAGE_DIR, { recursive: true });
+  if (!fs.existsSync(ADDR_PATH)) fs.writeFileSync(ADDR_PATH, "{}");
+}
+function readAll() { ensure(); return JSON.parse(fs.readFileSync(ADDR_PATH, "utf8")); }
+function writeAll(m) { fs.writeFileSync(ADDR_PATH, JSON.stringify(m, null, 2)); }
+
+async function getAddress(userId) { const m = readAll(); return m[userId] || null; }
+async function setAddress(userId, address) { const m = readAll(); m[userId] = address; writeAll(m); return true; }
+
+module.exports = { getAddress, setAddress };