refactor(platform): extract platform detection into separate module

移除各文件中重复的平台检测代码，统一封装到platform.js模块，添加缓存优化，支持多端平台检测、app_type和显示名称获取等能力，简化后续平台相关代码维护

common/js/customer-service.js

@@ -3,6 +3,7 @@
  * 整合各种客服方式，提供统一的调用接口
  */
 import IMAGE_CONFIG from './image-config.js';
+import Platform from './platform.js';
 
 export class CustomerService {
     constructor(vueInstance, externalConfig = null) {
@@ -30,28 +31,25 @@ export class CustomerService {
             return this.latestPlatformConfig;
         }
 
-        // 优先级：外部传入 > vuex store > 空对象
         const servicerConfig = this.externalConfig || this.vm.$store.state.servicerConfig || {};
+        const platformMap = {
+            h5: 'h5',
+            weapp: 'weapp',
+            alipay: 'aliapp',
+            baidu: 'baidu',
+            toutiao: 'toutiao',
+            qq: 'qq',
+            kuaishou: 'kuaishou',
+            jd: 'jd',
+            '360': '360',
+            xhs: 'xhs',
+            app: 'app',
+            pc: 'pc'
+        };
 
-        let platformConfig = null;
+        const platformKey = platformMap[Platform.detect()] || Platform.detect();
+        let platformConfig = servicerConfig[platformKey] && typeof servicerConfig[platformKey] === 'object' ? servicerConfig[platformKey] : null;
 
-        // #ifdef H5
-        platformConfig = servicerConfig.h5 && typeof servicerConfig.h5 === 'object' ? servicerConfig.h5 : null;
-        // #endif
-
-        // #ifdef MP-WEIXIN
-        platformConfig = servicerConfig.weapp && typeof servicerConfig.weapp === 'object' ? servicerConfig.weapp : null;
-        // #endif
-
-        // #ifdef MP-ALIPAY
-        platformConfig = servicerConfig.aliapp && typeof servicerConfig.aliapp === 'object' ? servicerConfig.aliapp : null;
-        // #endif
-
-        // #ifdef PC
-        platformConfig = servicerConfig.pc && typeof servicerConfig.pc === 'object' ? servicerConfig.pc : null;
-        // #endif
-
-        // 防止空数组被当作有效配置
         if (Array.isArray(platformConfig)) {
             platformConfig = null;
         }

common/js/event-bus.js

@@ -12,57 +12,13 @@
  * @createTime 2023-08-10
  */
 
+import Platform from './platform.js'
+
 class EventBus {
     constructor() {
         this.events = new Map()
         this.domBridge = null
-        this.platform = this.detectPlatform()
-    }
-
-    // 检测平台
-    detectPlatform() {
-        // #ifdef H5
-        return 'h5'
-        // #endif
-
-        // #ifdef MP-WEIXIN
-        return 'weapp'
-        // #endif
-
-        // #ifdef MP-ALIPAY
-        return 'alipay'
-        // #endif
-
-        // #ifdef MP-BAIDU
-        return 'baidu'
-        // #endif
-
-        // #ifdef MP-TOUTIAO
-        return 'toutiao'
-        // #endif
-
-        // #ifdef MP-QQ
-        return 'qq'
-        // #endif
-
-        // #ifdef MP-KUAISHOU
-        return 'kuaishou'
-        // #endif
-
-        // #ifdef MP-JD
-        return 'jd'
-        // #endif
-
-        // #ifdef MP-360
-        return '360'
-        // #endif
-
-        // #ifdef MP-XHS
-        return 'xhs'
-        // #endif
-
-
-        return 'unknown'
+        this.platform = Platform.detect()
     }
 
     // 设置 DOM 桥接

common/js/http.js

@@ -1,41 +1,9 @@
 import Config from './config.js'
 import Util from './util.js'
 import store from '@/store/index.js'
+import Platform from './platform.js'
 
-// #ifdef H5
-const app_type = Util.isWeiXin() ? 'wechat' : 'h5';
-const app_type_name = Util.isWeiXin() ? '微信公众号' : 'H5';
-// #endif
-
-// #ifdef MP-WEIXIN
-const app_type = 'weapp';
-const app_type_name = '微信小程序';
-// #endif
-
-// #ifdef MP-ALIPAY
-const app_type = 'aliapp';
-const app_type_name = '支付宝小程序';
-// #endif
-
-// #ifdef MP-BAIDU
-const app_type = 'baiduapp';
-const app_type_name = '百度小程序';
-// #endif
-
-// #ifdef MP-TOUTIAO
-const app_type = 'MP-TOUTIAO';
-const app_type_name = '头条小程序';
-// #endif
-
-// #ifdef MP-QQ
-const app_type = 'MP-QQ';
-const app_type_name = 'QQ小程序';
-// #endif
-
-// #ifdef APP-PLUS
-const app_type = 'app';
-const app_type_name = 'APP';
-// #endif
+const { app_type, app_type_name } = Platform.getPlatformInfo();
 
 export default {
 	sendRequest(params) {

common/js/platform.js

@@ -0,0 +1,199 @@
+/**
+ * 统一平台检测模块
+ * 消除分散在 http.js, util.js, event-bus.js, customer-service.js 中的重复平台检测代码
+ */
+
+let cachedPlatform = null;
+let cachedAppType = null;
+let cachedAppTypeName = null;
+
+export const Platform = {
+	/**
+	 * 检测当前运行平台
+	 * @returns {string} 平台标识
+	 */
+	detect() {
+		if (cachedPlatform) {
+			return cachedPlatform;
+		}
+
+		// #ifdef H5
+		cachedPlatform = 'h5';
+		// #endif
+
+		// #ifdef MP-WEIXIN
+		cachedPlatform = 'weapp';
+		// #endif
+
+		// #ifdef MP-ALIPAY
+		cachedPlatform = 'alipay';
+		// #endif
+
+		// #ifdef MP-BAIDU
+		cachedPlatform = 'baidu';
+		// #endif
+
+		// #ifdef MP-TOUTIAO
+		cachedPlatform = 'toutiao';
+		// #endif
+
+		// #ifdef MP-QQ
+		cachedPlatform = 'qq';
+		// #endif
+
+		// #ifdef MP-KUAISHOU
+		cachedPlatform = 'kuaishou';
+		// #endif
+
+		// #ifdef MP-JD
+		cachedPlatform = 'jd';
+		// #endif
+
+		// #ifdef MP-360
+		cachedPlatform = '360';
+		// #endif
+
+		// #ifdef MP-XHS
+		cachedPlatform = 'xhs';
+		// #endif
+
+		// #ifdef APP-PLUS
+		cachedPlatform = 'app';
+		// #endif
+
+		// #ifdef PC
+		cachedPlatform = 'pc';
+		// #endif
+
+		if (!cachedPlatform) {
+			cachedPlatform = 'unknown';
+		}
+
+		return cachedPlatform;
+	},
+
+	/**
+	 * 获取平台类型标识 (用于API请求)
+	 * @returns {string} app_type 值
+	 */
+	getAppType() {
+		if (cachedAppType) {
+			return cachedAppType;
+		}
+
+		const platform = this.detect();
+
+		// #ifdef H5
+		if (platform === 'h5') {
+			cachedAppType = this.isWeiXin() ? 'wechat' : 'h5';
+			return cachedAppType;
+		}
+		// #endif
+
+		const platformMap = {
+			weapp: 'weapp',
+			alipay: 'aliapp',
+			baidu: 'baiduapp',
+			toutiao: 'MP-TOUTIAO',
+			qq: 'MP-QQ',
+			kuaishou: 'kuaishou',
+			jd: 'jd',
+			'360': '360',
+			xhs: 'xhs',
+			app: 'app',
+			pc: 'pc'
+		};
+
+		cachedAppType = platformMap[platform] || 'unknown';
+		return cachedAppType;
+	},
+
+	/**
+	 * 获取平台类型名称 (用于显示)
+	 * @returns {string} app_type_name 值
+	 */
+	getAppTypeName() {
+		if (cachedAppTypeName) {
+			return cachedAppTypeName;
+		}
+
+		const platform = this.detect();
+
+		// #ifdef H5
+		if (platform === 'h5') {
+			cachedAppTypeName = this.isWeiXin() ? '微信公众号' : 'H5';
+			return cachedAppTypeName;
+		}
+		// #endif
+
+		const platformNameMap = {
+			weapp: '微信小程序',
+			alipay: '支付宝小程序',
+			baidu: '百度小程序',
+			toutiao: '头条小程序',
+			qq: 'QQ小程序',
+			kuaishou: '快手小程序',
+			jd: '京东小程序',
+			'360': '360小程序',
+			xhs: '小红书小程序',
+			app: 'APP',
+			pc: 'PC端'
+		};
+
+		cachedAppTypeName = platformNameMap[platform] || '未知平台';
+		return cachedAppTypeName;
+	},
+
+	/**
+	 * 判断是否运行在微信浏览器中 (H5环境)
+	 * @returns {boolean}
+	 */
+	isWeiXin() {
+		// #ifdef H5
+		return navigator.userAgent.toLowerCase().includes('micromessenger');
+		// #endif
+		return false;
+	},
+
+	/**
+	 * 判断是否是小程序环境
+	 * @returns {boolean}
+	 */
+	isMiniProgram() {
+		const platform = this.detect();
+		const miniProgramPlatforms = ['weapp', 'alipay', 'baidu', 'toutiao', 'qq', 'kuaishou', 'jd', '360', 'xhs'];
+		return miniProgramPlatforms.includes(platform);
+	},
+
+	/**
+	 * 判断是否是移动端 (小程序或H5或APP)
+	 * @returns {boolean}
+	 */
+	isMobile() {
+		const platform = this.detect();
+		return platform !== 'pc' && platform !== 'unknown';
+	},
+
+	/**
+	 * 获取完整的平台信息对象
+	 * @returns {Object} 包含 platform, appType, appTypeName
+	 */
+	getPlatformInfo() {
+		return {
+			platform: this.detect(),
+			appType: this.getAppType(),
+			appTypeName: this.getAppTypeName()
+		};
+	},
+
+	/**
+	 * 清除缓存 (用于测试或需要重新检测的场景)
+	 */
+	clearCache() {
+		cachedPlatform = null;
+		cachedAppType = null;
+		cachedAppTypeName = null;
+	}
+};
+
+export default Platform;

common/js/util.js

@@ -1,6 +1,7 @@
 import Config from './config.js'
 import store from '@/store/index.js'
 import Http from './http.js'
+import Platform from './platform.js'
 import {
 	Weixin
 } from 'common/js/wx-jssdk.js';
@@ -381,35 +382,7 @@ export default {
 	 * @param url
 	 */
 	upload: function (num, params, callback, url) {
-		// #ifdef H5
-		var app_type = this.isWeiXin() ? 'wechat' : 'h5';
-		var app_type_name = this.isWeiXin() ? '微信公众号' : 'H5';
-		// #endif
-
-		// #ifdef MP-WEIXIN
-		var app_type = 'weapp';
-		var app_type_name = '微信小程序';
-		// #endif
-
-		// #ifdef MP-ALIPAY
-		var app_type = 'aliapp';
-		var app_type_name = '支付宝小程序';
-		// #endif
-
-		// #ifdef MP-BAIDU
-		var app_type = 'baiduapp';
-		var app_type_name = '百度小程序';
-		// #endif
-
-		// #ifdef MP-TOUTIAO
-		var app_type = 'MP-TOUTIAO';
-		var app_type_name = '头条小程序';
-		// #endif
-
-		// #ifdef MP-QQ
-		var app_type = 'MP-QQ';
-		var app_type_name = 'QQ小程序';
-		// #endif
+		const { app_type, app_type_name } = Platform.getPlatformInfo();
 		var data = {
 			token: store.state.token,
 			app_type: app_type,