feat: integrate client and server sharing workflows

web/src/core-bridge/worker/channelItems.ts

@@ -0,0 +1,62 @@
+
+import { previewKindOf } from '@/lib/fileKind';
+import type { FileItem } from '../types';
+import { apiFetch } from './http';
+import { blobs, getSession } from './sessions';
+
+
+
+import { stopChannel, connectChannel } from './channelTransport';
+import { downloadDecrypted } from './transfer';
+import { publishWorkspace } from './presentation';
+import { IntegrityError } from '@webdrop/core';
+
+export function connectChannelResource(id: string): () => void {
+  void connectChannel(id);
+  return () => stopChannel(id);
+}
+
+export async function removeChannelItem(resourceId: string, itemId: string): Promise<void> {
+  const { session } = await getSession(resourceId);
+  const role = session.can('owner') ? 'owner' : session.can('write') ? 'write' : 'read';
+  await apiFetch(`/channels/${resourceId}/items/${itemId}`, {
+    method: 'DELETE', headers: session.authHeaders(role),
+  });
+}
+
+export async function getChannelBlob(resourceId: string, itemId: string, versionId?: string): Promise<Blob> {
+  if (versionId) throw new Error('此版本暂不可下载');
+  const cached = blobs.get(`${resourceId}:${itemId}`);
+  if (cached) return cached;
+  const { session, resource } = await getSession(resourceId);
+  if (resource.kind !== 'channel') throw new Error('资源类型不匹配');
+  let result: Awaited<ReturnType<typeof downloadDecrypted>>;
+  try { result = await downloadDecrypted(session, resource, itemId); }
+  catch (error) {
+    if (error instanceof IntegrityError) publishWorkspace(resourceId, { t: 'item', item: { id: itemId, kind: 'text', ts: Date.now(), deviceId: '', text: '', state: { kind: 'tampered' } } });
+    throw error;
+  }
+  blobs.set(`${resourceId}:${itemId}`, result.blob);
+  if (result.meta?.kind === 'file') {
+    const item: FileItem = {
+      id: itemId, kind: 'file', ts: result.meta.ts, deviceId: result.meta.dev ?? '未知设备', state: { kind: 'complete' },
+      name: result.meta.name ?? '加密文件', mime: result.meta.mime ?? result.blob.type, size: result.blob.size,
+      remaining: null, preview: 'none', gated: true,
+    };
+    item.preview = previewKindOf(item.mime, item.name);
+    publishWorkspace(resourceId, { t: 'item', item });
+  }
+  return result.blob;
+}
+
+export async function resolveTextConflict(): Promise<void> {
+  throw new Error('此条目没有可合并的冲突版本');
+}
+
+export async function markChannelSeen(): Promise<void> {
+  return undefined;
+}
+
+export async function listArchive(_id: string): Promise<never[]> {
+  throw new Error('服务端没有提供压缩包目录接口,可以直接下载。');
+}