修复小程序推荐页系统分享直达作品

同步推荐页当前作品到小程序原生分享目标
保留小程序系统分享路径中的公开作品参数
补充小程序分享目标解析与前端消息发送测试

src/services/wechatMiniProgramShareTarget.test.ts

@@ -0,0 +1,67 @@
+/* @vitest-environment jsdom */
+
+import { afterEach, describe, expect, test, vi } from 'vitest';
+
+import {
+  buildWechatMiniProgramShareTargetMessage,
+  postWechatMiniProgramShareTarget,
+} from './wechatMiniProgramShareTarget';
+
+afterEach(() => {
+  vi.restoreAllMocks();
+  Reflect.deleteProperty(window, 'wx');
+  window.history.replaceState(null, '', '/');
+});
+
+describe('wechatMiniProgramShareTarget', () => {
+  test('builds a compact share target message for mini program native share', () => {
+    expect(
+      buildWechatMiniProgramShareTargetMessage({
+        targetPath: '/works/detail',
+        work: ' BB-12345678 ',
+        title: ' 汪汪声浪 ',
+      }),
+    ).toEqual({
+      type: 'genarrative:share-target',
+      payload: {
+        targetPath: '/works/detail',
+        work: 'BB-12345678',
+        title: '汪汪声浪',
+      },
+    });
+  });
+
+  test('posts the current recommended work to mini program web-view host', () => {
+    const postMessage = vi.fn();
+    window.history.replaceState(
+      null,
+      '',
+      '/?clientRuntime=wechat_mini_program',
+    );
+    window.wx = {
+      miniProgram: {
+        postMessage,
+      },
+    };
+
+    expect(
+      postWechatMiniProgramShareTarget({
+        targetPath: '/works/detail',
+        work: 'BB-12345678',
+        title: '汪汪声浪',
+      }),
+    ).toBe(true);
+
+    expect(postMessage).toHaveBeenCalledWith({
+      data: {
+        type: 'genarrative:share-target',
+        payload: {
+          targetPath: '/works/detail',
+          work: 'BB-12345678',
+          title: '汪汪声浪',
+        },
+      },
+    });
+  });
+});
+

src/services/wechatMiniProgramShareTarget.ts

@@ -0,0 +1,61 @@
+import { isWechatMiniProgramWebViewRuntime } from './authService';
+
+const MESSAGE_TYPE = 'genarrative:share-target';
+
+export type WechatMiniProgramShareTarget = {
+  targetPath: '/works/detail';
+  work: string;
+  title?: string | null;
+};
+
+function normalizeShareTarget(
+  target: WechatMiniProgramShareTarget | null | undefined,
+) {
+  const work = target?.work?.trim() ?? '';
+  if (!work) {
+    return null;
+  }
+
+  return {
+    targetPath: '/works/detail' as const,
+    work,
+    title: target?.title?.trim() || undefined,
+  };
+}
+
+export function buildWechatMiniProgramShareTargetMessage(
+  target: WechatMiniProgramShareTarget | null | undefined,
+) {
+  const normalizedTarget = normalizeShareTarget(target);
+  return normalizedTarget
+    ? {
+        type: MESSAGE_TYPE,
+        payload: normalizedTarget,
+      }
+    : null;
+}
+
+export function postWechatMiniProgramShareTarget(
+  target: WechatMiniProgramShareTarget | null | undefined,
+) {
+  if (
+    typeof window === 'undefined' ||
+    !isWechatMiniProgramWebViewRuntime() ||
+    typeof window.wx?.miniProgram?.postMessage !== 'function'
+  ) {
+    return false;
+  }
+
+  const message = buildWechatMiniProgramShareTargetMessage(target);
+  if (!message) {
+    return false;
+  }
+
+  // 中文注释：微信 web-view 会在分享等时机把 postMessage 数据交给原生页，
+  // 小程序页据此把右上角系统分享指向当前推荐作品。
+  window.wx.miniProgram.postMessage({
+    data: message,
+  });
+  return true;
+}
+