init

项目初始化

utils/api.js

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+//const BASE_URL = 'https://muguaclub.cn';
+//const BASE_URL = "http://127.0.0.1:8000";
+const BASE_URL = 'https://m.muguaclub.cn/clock';
+const STATIC_BASE_URL = 'https://m.muguaclub.cn';
+
+let redirectingProfile = false;
+
+function goProfile() {
+  if (redirectingProfile) {
+    return;
+  }
+  const pages = getCurrentPages();
+  const current = pages.length ? pages[pages.length - 1] : null;
+  const route = current && current.route;
+  if (route === 'pages/profile/profile') {
+    return;
+  }
+  redirectingProfile = true;
+  wx.switchTab({
+    url: '/pages/profile/profile',
+    complete() {
+      setTimeout(() => {
+        redirectingProfile = false;
+      }, 1200);
+    }
+  });
+}
+
+function request(options) {
+  const { url, method = 'GET', data = {}, auth = true } = options;
+  const isIdempotent = method === 'GET' || method === 'DELETE';
+  let retried = false;
+
+  return new Promise((resolve, reject) => {
+    const doRequest = () => {
+      const header = { 'Content-Type': 'application/json' };
+      const token = wx.getStorageSync('token');
+      if (auth && token) {
+        header['Authorization'] = 'Bearer ' + token;
+      }
+      wx.request({
+        url: BASE_URL + url,
+        method,
+        data,
+        header,
+        success(res) {
+          if (res.statusCode >= 200 && res.statusCode < 300) {
+            resolve(res.data);
+          } else if (res.statusCode === 401) {
+            wx.removeStorageSync('token');
+            if (auth) {
+              goProfile();
+            }
+            reject(res.data || { error: '未登录' });
+          } else {
+            reject(res.data || { error: '请求失败' });
+          }
+        },
+        fail(err) {
+          // 冷启动时首个请求可能因网络栈未就绪而失败，空闲时对幂等请求自动重试一次
+          const msg = (err && err.errMsg) || '';
+          const domainError = /url not in domain list|domain not/i.test(msg);
+          if (!retried && isIdempotent && !domainError) {
+            retried = true;
+            setTimeout(doRequest, 800);
+            return;
+          }
+          reject(err);
+        }
+      });
+    };
+    doRequest();
+  });
+}
+
+module.exports = { request, BASE_URL, STATIC_BASE_URL };

utils/auth.js

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+const api = require('./api');
+
+let loginPromise = null;
+
+function getToken() {
+  return wx.getStorageSync('token') || '';
+}
+
+function setToken(token) {
+  wx.setStorageSync('token', token);
+}
+
+function clearToken() {
+  wx.removeStorageSync('token');
+}
+
+function wxLogin(retries) {
+  const remain = typeof retries === 'number' ? retries : 3;
+  return new Promise((resolve, reject) => {
+    wx.login({
+      success(res) {
+        if (res && res.code) {
+          resolve(res.code);
+        } else {
+          reject(new Error((res && res.errMsg) || '微信登录失败'));
+        }
+      },
+      fail: reject
+    });
+  }).catch((err) => {
+    // 冷启动时微信登录服务可能尚未就绪，指数退避重试
+    if (remain > 0) {
+      const delay = 400 + (4 - remain) * 200; // 首次 600ms，依次 800ms、1000ms
+      return new Promise((resolve) => setTimeout(resolve, delay))
+        .then(() => wxLogin(remain - 1));
+    }
+    throw err;
+  });
+}
+
+// 整个微信登录流程失败时重新取 code 再试一次，覆盖冷启动首个网络请求偶发失败
+function wechatLogin(retries) {
+  const remain = typeof retries === 'number' ? retries : 1;
+  return wxLogin()
+    .then((code) => api.request({
+      url: '/api/v1/auth/wechat-login',
+      method: 'POST',
+      data: { code },
+      auth: false
+    }))
+    .catch((err) => {
+      if (remain > 0) {
+        return new Promise((resolve) => setTimeout(resolve, 500)).then(() => wechatLogin(remain - 1));
+      }
+      throw err;
+    });
+}
+
+// 单例登录：App.onLaunch 与首屏页面 onShow 可能几乎同时调用，
+// 共享同一个进行中的登录 Promise，避免重复 wx.login / wechat-login 造成竞态。
+// 关键：登录失败时必须清空单例，让下一次调用能重新发起，
+// 否则冷启动 wx.login 偶发失败后，后续页面永远拿不到 token。
+function ensureLogin(refresh) {
+  const existing = getToken();
+  if (existing && !refresh) {
+    return Promise.resolve(existing);
+  }
+  if (loginPromise) {
+    return loginPromise;
+  }
+  const p = wechatLogin()
+    .then((res) => {
+      if (res && res.success) {
+        setToken(res.token);
+        return res.token;
+      }
+      // need_phone：未绑定手机号时 resolve(null)，由页面引导去「我的」绑定
+      return null;
+    })
+    .finally(() => {
+      // 无论成功失败，完成后都清掉单例，让下一次调用可以重新发起
+      if (loginPromise === p) {
+        loginPromise = null;
+      }
+    });
+  loginPromise = p;
+  return p;
+}
+
+function loginWithPhone(phoneCode) {
+  return wxLogin()
+    .then((code) => api.request({
+      url: '/api/v1/auth/bind-phone',
+      method: 'POST',
+      data: { code, phone_code: phoneCode },
+      auth: false
+    }))
+    .then((res) => {
+      if (res && res.success) {
+        setToken(res.token);
+        return res;
+      }
+      const error = new Error((res && res.error) || '手机号登录失败');
+      error.error = (res && res.error) || '手机号登录失败';
+      throw error;
+    });
+}
+
+module.exports = { getToken, setToken, clearToken, wxLogin, ensureLogin, loginWithPhone };