refactor(infra): directory structure (#4615)

packages/common/y-indexeddb/src/shared.ts

@@ -0,0 +1,50 @@
+import type { DBSchema, IDBPDatabase } from 'idb';
+import type { DataSourceAdapter } from 'y-provider';
+
+export const dbVersion = 1;
+export const DEFAULT_DB_NAME = 'affine-local';
+
+export function upgradeDB(db: IDBPDatabase<BlockSuiteBinaryDB>) {
+  db.createObjectStore('workspace', { keyPath: 'id' });
+  db.createObjectStore('milestone', { keyPath: 'id' });
+}
+
+export interface IndexedDBProvider extends DataSourceAdapter {
+  connect: () => void;
+  disconnect: () => void;
+  cleanup: () => Promise<void>;
+  readonly connected: boolean;
+}
+
+export type UpdateMessage = {
+  timestamp: number;
+  update: Uint8Array;
+};
+
+export type WorkspacePersist = {
+  id: string;
+  updates: UpdateMessage[];
+};
+
+export type WorkspaceMilestone = {
+  id: string;
+  milestone: Record<string, Uint8Array>;
+};
+
+export interface BlockSuiteBinaryDB extends DBSchema {
+  workspace: {
+    key: string;
+    value: WorkspacePersist;
+  };
+  milestone: {
+    key: string;
+    value: WorkspaceMilestone;
+  };
+}
+
+export interface OldYjsDB extends DBSchema {
+  updates: {
+    key: number;
+    value: Uint8Array;
+  };
+}