Backup domains

lib/index.js

@@ -1,7 +1,7 @@
+import getHost, { tryBackupDomains } from './getHost';
 import { NativeAppEventEmitter, NativeModules } from 'react-native';
-const Pushy = NativeModules.Pushy || {};
 
-const host = 'https://update.reactnative.cn/api';
+const Pushy = NativeModules.Pushy || {};
 
 export const downloadRootDir = Pushy.downloadRootDir;
 export const packageVersion = Pushy.packageVersion;
@@ -28,7 +28,6 @@ There is available update:
   hash: 'hash',
   description: '添加聊天功能\n修复商城页面BUG',
   metaInfo: '{"silent":true}',
-  updateUrl: 'http://update-packages.reactnative.cn/hash',
   pdiffUrl: 'http://update-packages.reactnative.cn/hash',
   diffUrl: 'http://update-packages.reactnative.cn/hash',
 }
@@ -40,20 +39,29 @@ function assertRelease() {
   }
 }
 
-export async function checkUpdate(APPKEY) {
+export async function checkUpdate(APPKEY, isRetry) {
   assertRelease();
-  const resp = await fetch(`${host}/checkUpdate/${APPKEY}`, {
-    method: 'POST',
-    headers: {
-      Accept: 'application/json',
-      'Content-Type': 'application/json',
-    },
-    body: JSON.stringify({
-      packageVersion,
-      hash: currentVersion,
-      buildTime,
-    }),
-  });
+  let resp;
+  try {
+    resp = await fetch(`${getHost()}/checkUpdate/${APPKEY}`, {
+      method: 'POST',
+      headers: {
+        Accept: 'application/json',
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify({
+        packageVersion,
+        hash: currentVersion,
+        buildTime,
+      }),
+    });
+  } catch (e) {
+    if (isRetry) {
+      throw new Error('Could not connect to pushy server');
+    }
+    await tryBackupDomains();
+    return checkUpdate(APPKEY, true);
+  }
 
   if (resp.status !== 200) {
     throw new Error((await resp.json()).message);