Add immediate startup login and loading states for mini program home

pets-fe/app.js

@@ -2,22 +2,33 @@ App({
   globalData: { token: "", user: null },
   onLaunch() {
     this.globalData.token = wx.getStorageSync("pet_token") || "";
+    // Start immediately; pages await the same promise and display failures themselves.
+    this.login().catch(() => {});
   },
   async login() {
+    if (this.loginPromise) return this.loginPromise;
     if (this.globalData.token) return this.globalData.token;
-    if (!this.loginPromise)
-      this.loginPromise = (async () => {
-        const { request } = require("./utils/api");
-        const { code } = await wx.login();
-        if (!code) throw new Error("微信登录未取得凭证，请重试");
-        const data = await request("/auth/login", "POST", { code }, false);
-        this.globalData.token = data.token;
-        this.globalData.user = data.user;
-        wx.setStorageSync("pet_token", data.token);
-        return data.token;
-      })().finally(() => {
-        this.loginPromise = null;
-      });
+    this.loginPromise = (async () => {
+      const { request } = require("./utils/api");
+      const { code } = await new Promise((resolve, reject) =>
+        wx.login({
+          timeout: 10000,
+          success: resolve,
+          fail: () => reject(new Error("暂时无法连接微信，请重新连接")),
+        }),
+      );
+      if (!code) throw new Error("微信登录未取得凭证，请重新连接");
+      const data = await request("/auth/login", "POST", { code }, false);
+      if (!data || typeof data.token !== "string" || !data.token) {
+        throw new Error("登录未完成，请重新连接");
+      }
+      this.globalData.token = data.token;
+      this.globalData.user = data.user;
+      wx.setStorageSync("pet_token", data.token);
+      return data.token;
+    })().finally(() => {
+      this.loginPromise = null;
+    });
     return this.loginPromise;
   },
 });