feat(doclib): 允许多选可管理文档分享并计算分享人交集。

Co-authored-by: Cursor <cursoragent@cursor.com>

web-admin/src/views/doclib/enter/model.ts

@@ -2,12 +2,29 @@ import type { DoclibFolder } from '@/api/doclib'
 
 export function actionsFor(rows: Array<{ canManage: boolean }>) {
   return {
-    share: rows.length === 1 && rows[0].canManage,
+    share: rows.length > 0 && rows.every((row) => row.canManage),
     download: rows.length > 0,
     delete: rows.length > 0 && rows.every((row) => row.canManage)
   }
 }
 
+/** 多选打开分享弹窗时，初始勾选为各文档现有分享人的交集。 */
+export function shareUserIntersection(
+  documents: Array<{ shares?: Array<{ id: string }> | null }>
+): string[] {
+  if (!documents.length) return []
+  let ids = new Set(
+    (documents[0].shares || []).map((person) => String(person.id || '').trim()).filter(Boolean)
+  )
+  for (const doc of documents.slice(1)) {
+    const next = new Set(
+      (doc.shares || []).map((person) => String(person.id || '').trim()).filter(Boolean)
+    )
+    ids = new Set([...ids].filter((id) => next.has(id)))
+  }
+  return [...ids]
+}
+
 export function findFolder(nodes: DoclibFolder[], id: string): DoclibFolder | undefined {
   for (const node of nodes) {
     if (node.id === id) return node