feat: Add neapi support

util/neapiKey.js

@@ -0,0 +1,49 @@
+const fs = require('fs')
+const path = require('path')
+
+// 配置会轮换，启动时由 /register/neapikey 拉取后缓存到这里
+const neapiKeyPath = path.resolve(require('os').tmpdir(), 'neapi_key')
+
+let neapi_key = null
+
+const loadNeapiKey = () => {
+  if (!neapi_key && fs.existsSync(neapiKeyPath)) {
+    try {
+      const stored = JSON.parse(fs.readFileSync(neapiKeyPath, 'utf-8'))
+      neapi_key = {
+        version: stored.version,
+        circleTime: stored.circleTime,
+        fetchedAt: stored.fetchedAt,
+        keyBlob: Buffer.from(stored.keyBlob, 'base64'),
+        encryptKey: Buffer.from(stored.encryptKey, 'base64'),
+        decryptKey: Buffer.from(stored.decryptKey, 'base64'),
+      }
+    } catch (error) {
+      console.log('[ERR]', error)
+    }
+  }
+  return neapi_key
+}
+
+const saveNeapiKey = (config, circleTime) => {
+  const fetchedAt = Date.now()
+  fs.writeFileSync(
+    neapiKeyPath,
+    JSON.stringify({
+      version: config.version,
+      circleTime,
+      fetchedAt,
+      keyBlob: config.keyBlob.toString('base64'),
+      encryptKey: config.encryptKey.toString('base64'),
+      decryptKey: config.decryptKey.toString('base64'),
+    }),
+    'utf-8',
+  )
+  neapi_key = { ...config, circleTime, fetchedAt }
+  return neapi_key
+}
+
+module.exports = {
+  loadNeapiKey,
+  saveNeapiKey,
+}