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.test.ts

@@ -14,7 +14,7 @@ const node = (id: string, scope: 'mine' | 'shared', children: any[] = []) => ({
   children
 })
 
-test('分享接收人只能下载，混合选择不能批量删除', () => {
+test('可管理文档可多选分享，混合选择不能分享', () => {
   assert.deepEqual(actionsFor([{ canManage: false }]), {
     share: false,
     download: true,
@@ -25,10 +25,30 @@ test('分享接收人只能下载，混合选择不能批量删除', () => {
     download: true,
     delete: false
   })
-  assert.deepEqual(actionsFor([{ canManage: true }]), { share: true, download: true, delete: true })
+  assert.deepEqual(actionsFor([{ canManage: true }]), {
+    share: true,
+    download: true,
+    delete: true
+  })
+  assert.deepEqual(actionsFor([{ canManage: true }, { canManage: true }]), {
+    share: true,
+    download: true,
+    delete: true
+  })
   assert.deepEqual(actionsFor([]), { share: false, download: false, delete: false })
 })
 
+test('分享人初始勾选取所选文档交集', async () => {
+  const { shareUserIntersection } = await import('./model')
+  const docs = [
+    { shares: [{ id: 'a' }, { id: 'b' }] },
+    { shares: [{ id: 'b' }, { id: 'c' }] }
+  ]
+  assert.deepEqual(shareUserIntersection(docs), ['b'])
+  assert.deepEqual(shareUserIntersection([{ shares: [{ id: 'a' }] }, { shares: [] }]), [])
+  assert.deepEqual(shareUserIntersection([]), [])
+})
+
 test('同一个目录在不同范围有独立树节点，已删除目录不再命中', () => {
   const mine = node('root', 'mine', [node('child', 'mine')])
   const shared = node('root', 'shared')

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