feat(server): add typed frps v2 proxy specs (#5405)

web/frps/src/api/proxy.ts

@@ -6,6 +6,9 @@ import type {
   ProxyListV2Params,
   ProxyStatsInfo,
   ProxyV2Info,
+  ProxyV2Spec,
+  ProxyV2SpecBlocks,
+  ProxyV2Type,
   TrafficResponse,
 } from '../types/proxy'
 
@@ -39,19 +42,53 @@ export const getProxiesV2 = async (params: ProxyListV2Params = {}) => {
   }
 }
 
-export const toLegacyProxyStats = (proxy: ProxyV2Info): ProxyStatsInfo => ({
-  name: proxy.name,
-  type: proxy.type,
-  conf: proxy.spec,
-  user: proxy.user,
-  clientID: proxy.clientID,
-  todayTrafficIn: proxy.status.todayTrafficIn,
-  todayTrafficOut: proxy.status.todayTrafficOut,
-  curConns: proxy.status.curConns,
-  lastStartTime: formatUnixSeconds(proxy.status.lastStartAt),
-  lastCloseTime: formatUnixSeconds(proxy.status.lastCloseAt),
-  status: proxy.status.phase,
-})
+const getActiveProxySpec = (
+  spec: ProxyV2Spec,
+): ProxyV2SpecBlocks[ProxyV2Type] => {
+  switch (spec.type) {
+    case 'tcp':
+      return spec.tcp
+    case 'udp':
+      return spec.udp
+    case 'http':
+      return spec.http
+    case 'https':
+      return spec.https
+    case 'tcpmux':
+      return spec.tcpmux
+    case 'stcp':
+      return spec.stcp
+    case 'sudp':
+      return spec.sudp
+    case 'xtcp':
+      return spec.xtcp
+    default:
+      return assertNever(spec)
+  }
+}
+
+const assertNever = (value: never): never => {
+  throw new Error(`Unsupported proxy spec: ${JSON.stringify(value)}`)
+}
+
+export const toLegacyProxyStats = (proxy: ProxyV2Info): ProxyStatsInfo => {
+  const type = proxy.spec.type
+  const activeSpec = getActiveProxySpec(proxy.spec)
+
+  return {
+    name: proxy.name,
+    type,
+    conf: proxy.status.phase === 'offline' ? null : activeSpec,
+    user: proxy.user,
+    clientID: proxy.clientID,
+    todayTrafficIn: proxy.status.todayTrafficIn,
+    todayTrafficOut: proxy.status.todayTrafficOut,
+    curConns: proxy.status.curConns,
+    lastStartTime: formatUnixSeconds(proxy.status.lastStartAt),
+    lastCloseTime: formatUnixSeconds(proxy.status.lastCloseAt),
+    status: proxy.status.phase,
+  }
+}
 
 export const getProxy = (type: string, name: string) => {
   return http.get<ProxyStatsInfo>(`../api/proxy/${type}/${name}`)