初始化提交

index.js

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+/**
+ * 微信分享 SDK 封装
+ * @param {Object} options 配置选项
+ * @returns {Promise} 返回 Promise 对象
+ */
+const wxSDK = (options = {}) => {
+  return new Promise((resolve, reject) => {
+    // 环境检测
+    const w = typeof window !== 'undefined' ? window : self
+    if (!w.document) {
+      return reject(new Error('wxSDK只能在浏览器环境下使用'))
+    }
+
+    // 默认配置
+    const defaultConfig = {
+      apiUrl: null,
+      sdk: 'https://res.wx.qq.com/open/js/jweixin-1.6.0.js',
+      title: ['分享至朋友圈', '分享至好友'],
+      desc: '万事皆虚，万物皆允',
+      shareIcon: `https://src.pandorastudio.cn/favicon.jpg`,
+      shareLinks: w.location.href,
+      debug: false,
+      jsApiList: [],
+      openTagList: [],
+      timeout: 5000,
+      callback: {
+        ready: null,
+        success: null,
+        error: null,
+      },
+    }
+
+    // 合并配置（深度合并回调函数）
+    const config = {
+      ...defaultConfig,
+      ...options,
+      callback: {
+        ...defaultConfig.callback,
+        ...(options.callback || {}),
+      },
+    }
+
+    const { apiUrl, sdk, title, desc, shareLinks, debug, jsApiList, openTagList, callback, timeout } = config
+
+    // 参数校验
+    if (!apiUrl) {
+      return reject(new Error('apiUrl is required'))
+    }
+
+    // 处理分享图标（使用 let 声明）
+    let { shareIcon } = config
+    try {
+      const favicon = document.querySelector('link[rel="shortcut icon"], link[rel="icon"]')
+      if (favicon && favicon.href) {
+        shareIcon = favicon.href
+      }
+    } catch (e) {
+      console.warn('Favicon detection failed:', e)
+    }
+
+    // SDK 加载管理
+    const scriptId = 'Pd_share'
+    let scriptTag = document.getElementById(scriptId)
+    let loadTimeout
+
+    const cleanup = () => {
+      clearTimeout(loadTimeout)
+      scriptTag.onload = null
+      scriptTag.onerror = null
+    }
+
+    const loadSDK = () => {
+      cleanup()
+
+      scriptTag = document.createElement('script')
+      scriptTag.id = scriptId
+      scriptTag.src = sdk
+      scriptTag.async = true
+      scriptTag.defer = true
+
+      // 超时处理
+      loadTimeout = setTimeout(() => {
+        cleanup()
+        document.head.removeChild(scriptTag)
+        reject(new Error(`微信JSSDK加载超时 ${timeout}ms`))
+      }, timeout)
+
+      scriptTag.onload = () => {
+        cleanup()
+        initWeChat()
+      }
+
+      scriptTag.onerror = err => {
+        cleanup()
+        document.head.removeChild(scriptTag)
+        reject(new Error('微信JSSDK加载错误'))
+      }
+
+      document.head.appendChild(scriptTag)
+    }
+
+    // 微信初始化
+    const initWeChat = () => {
+      if (!w.wx) {
+        return reject(new Error('微信JSSDK加载不正确'))
+      }
+
+      // 参数处理
+      const timelineConfig = {
+        title: Array.isArray(title) ? title[0] : title,
+        link: Array.isArray(shareLinks) ? shareLinks[0] : shareLinks.split('#')[0],
+        imgUrl: Array.isArray(shareIcon) ? shareIcon[0] : shareIcon,
+      }
+
+      const messageConfig = {
+        title: Array.isArray(title) ? title[1] : title,
+        link: Array.isArray(shareLinks) ? shareLinks[1] : shareLinks.split('#')[0],
+        imgUrl: Array.isArray(shareIcon) ? shareIcon[1] : shareIcon,
+        desc,
+      }
+
+      // API 列表处理
+      const baseApiList = ['updateTimelineShareData', 'updateAppMessageShareData']
+      const fullApiList = [...new Set([...baseApiList, ...jsApiList])]
+      const fullOpenTagList = ['wx-open-launch-app', ...openTagList]
+
+      // 获取签名
+      fetch(`${apiUrl}${w.location.href.split('#')[0]}`)
+        .then(response => {
+          if (!response.ok) {
+            throw new Error(`网络请求失败 (${response.status})`)
+          }
+          return response.json()
+        })
+        .then(res => {
+          const { appId, timestamp, nonceStr, signature } = res || {}
+          if (!appId || !timestamp || !nonceStr || !signature) {
+            throw new Error('接口响应格式错误')
+          }
+
+          // 微信配置
+          w.wx.config({
+            debug,
+            appId,
+            timestamp,
+            nonceStr,
+            signature,
+            jsApiList: fullApiList,
+            openTagList: fullOpenTagList,
+          })
+
+          w.wx.error(err => {
+            callback.error?.(err)
+            reject(err)
+          })
+
+          w.wx.ready(() => {
+            try {
+              const shareOperations = []
+
+              // 朋友圈分享
+              if (w.wx.updateTimelineShareData) {
+                shareOperations.push(
+                  new Promise(shareResolve => {
+                    w.wx.updateTimelineShareData({
+                      ...timelineConfig,
+                      success: () => {
+                        callback.success?.('timeline')
+                        shareResolve()
+                      },
+                      fail: err => {
+                        callback.error?.(err)
+                        shareResolve() // 不阻断流程
+                      },
+                    })
+                  })
+                )
+              }
+
+              // 好友分享
+              if (w.wx.updateAppMessageShareData) {
+                shareOperations.push(
+                  new Promise(shareResolve => {
+                    w.wx.updateAppMessageShareData({
+                      ...messageConfig,
+                      success: () => {
+                        callback.success?.('message')
+                        shareResolve()
+                      },
+                      fail: err => {
+                        callback.error?.(err)
+                        shareResolve() // 不阻断流程
+                      },
+                    })
+                  })
+                )
+              }
+
+              // 等待所有分享配置完成
+              Promise.all(shareOperations)
+                .then(() => {
+                  callback.ready?.()
+                  resolve(w.wx)
+                })
+                .catch(e => {
+                  console.error('分享设置失败:', e)
+                  callback.ready?.()
+                  resolve(w.wx) // 仍返回wx对象
+                })
+            } catch (e) {
+              reject(e)
+            }
+          })
+        })
+        .catch(err => {
+          reject(new Error(`签名接口请求错误: ${err.message}`))
+        })
+    }
+
+    // 加载SDK
+    if (typeof w.wx === 'object' && w.wx.config) {
+      // 已加载SDK
+      initWeChat()
+    } else if (scriptTag) {
+      // 正在加载中
+      scriptTag.onload = initWeChat
+      scriptTag.onerror = err => {
+        cleanup()
+        reject(new Error('微信JSSDK加载失败'))
+      }
+    } else {
+      // 全新加载
+      loadSDK()
+    }
+  })
+}
+
+export default wxSDK