fix(editor): missing resource files in exported snapshot zip (#9450)

Closes: [BS-2280](https://linear.app/affine-design/issue/BS-2280/导出-zip-snapshot-丢失-blob)

blocksuite/affine/model/src/blocks/attachment/attachment-transformer.ts

@@ -1,4 +1,9 @@
-import type { FromSnapshotPayload, SnapshotNode } from '@blocksuite/store';
+import type {
+  BlockSnapshotLeaf,
+  FromSnapshotPayload,
+  SnapshotNode,
+  ToSnapshotPayload,
+} from '@blocksuite/store';
 import { BaseBlockTransformer } from '@blocksuite/store';
 
 import type { AttachmentBlockProps } from './attachment-model.js';
@@ -14,4 +19,16 @@ export class AttachmentBlockTransformer extends BaseBlockTransformer<AttachmentB
 
     return snapshotRet;
   }
+
+  override toSnapshot(
+    snapshot: ToSnapshotPayload<AttachmentBlockProps>
+  ): BlockSnapshotLeaf {
+    const snapshotRet = super.toSnapshot(snapshot);
+    const sourceId = snapshot.model.sourceId;
+    if (sourceId) {
+      const pathBlobIdMap = snapshot.assets.getPathBlobIdMap();
+      pathBlobIdMap.set(snapshot.model.id, sourceId);
+    }
+    return snapshotRet;
+  }
 }

blocksuite/affine/model/src/blocks/image/image-transformer.ts

@@ -1,4 +1,9 @@
-import type { FromSnapshotPayload, SnapshotNode } from '@blocksuite/store';
+import type {
+  BlockSnapshotLeaf,
+  FromSnapshotPayload,
+  SnapshotNode,
+  ToSnapshotPayload,
+} from '@blocksuite/store';
 import { BaseBlockTransformer } from '@blocksuite/store';
 
 import type { ImageBlockProps } from './image-model.js';
@@ -14,4 +19,16 @@ export class ImageBlockTransformer extends BaseBlockTransformer<ImageBlockProps>
 
     return snapshotRet;
   }
+
+  override toSnapshot(
+    snapshot: ToSnapshotPayload<ImageBlockProps>
+  ): BlockSnapshotLeaf {
+    const snapshotRet = super.toSnapshot(snapshot);
+    const sourceId = snapshot.model.sourceId;
+    if (sourceId) {
+      const pathBlobIdMap = snapshot.assets.getPathBlobIdMap();
+      pathBlobIdMap.set(snapshot.model.id, sourceId);
+    }
+    return snapshotRet;
+  }
 }

blocksuite/blocks/src/_common/transformers/zip.ts

@@ -23,13 +23,19 @@ async function exportDocs(collection: DocCollection, docs: Doc[]) {
   );
 
   const assets = zip.folder('assets');
+  const pathBlobIdMap = job.assetsManager.getPathBlobIdMap();
   const assetsMap = job.assets;
 
-  for (const [id, blob] of assetsMap) {
-    const ext = getAssetName(assetsMap, id).split('.').at(-1);
-    const name = `${id}.${ext}`;
-    await assets.file(name, blob);
-  }
+  await Promise.all(
+    Array.from(pathBlobIdMap.values()).map(async blobId => {
+      await job.assetsManager.readFromBlob(blobId);
+      const ext = getAssetName(assetsMap, blobId).split('.').at(-1);
+      const blob = assetsMap.get(blobId);
+      if (blob) {
+        await assets.file(`${blobId}.${ext}`, blob);
+      }
+    })
+  );
 
   const downloadBlob = await zip.generate();
   return download(downloadBlob, `${collection.id}.bs.zip`);

blocksuite/framework/store/src/transformer/base.ts

@@ -5,7 +5,7 @@ import type { DraftModel } from './draft.js';
 import { fromJSON, toJSON } from './json.js';
 import type { BlockSnapshot } from './type.js';
 
-type BlockSnapshotLeaf = Pick<
+export type BlockSnapshotLeaf = Pick<
   BlockSnapshot,
   'id' | 'flavour' | 'props' | 'version'
 >;