refactor(core): initial multiple servers infra (#8745)

This is the initial refactoring of affine to support multiple servers, but many more changes are needed to make multi-server actually work.

packages/common/infra/src/modules/workspace/providers/flavour.ts

@@ -10,6 +10,7 @@ import type {
   DocStorage,
 } from '../../../sync';
 import type { WorkspaceProfileInfo } from '../entities/profile';
+import type { Workspace } from '../entities/workspace';
 import type { WorkspaceMetadata } from '../metadata';
 
 export interface WorkspaceEngineProvider {
@@ -55,6 +56,8 @@ export interface WorkspaceFlavourProvider {
   getWorkspaceBlob(id: string, blob: string): Promise<Blob | null>;
 
   getEngineProvider(workspaceId: string): WorkspaceEngineProvider;
+
+  onWorkspaceInitialized?(workspace: Workspace): void;
 }
 
 export const WorkspaceFlavourProvider =

packages/common/infra/src/modules/workspace/services/repo.ts

@@ -83,11 +83,12 @@ export class WorkspaceRepositoryService extends Service {
     logger.info(
       `open workspace [${openOptions.metadata.flavour}] ${openOptions.metadata.id} `
     );
+    const flavourProvider = this.providers.find(
+      p => p.flavour === openOptions.metadata.flavour
+    );
     const provider =
       customProvider ??
-      this.providers
-        .find(p => p.flavour === openOptions.metadata.flavour)
-        ?.getEngineProvider(openOptions.metadata.id);
+      flavourProvider?.getEngineProvider(openOptions.metadata.id);
     if (!provider) {
       throw new Error(
         `Unknown workspace flavour: ${openOptions.metadata.flavour}`
@@ -106,6 +107,8 @@ export class WorkspaceRepositoryService extends Service {
 
     this.framework.emitEvent(WorkspaceInitialized, workspace);
 
+    flavourProvider?.onWorkspaceInitialized?.(workspace);
+
     this.profileRepo
       .getProfile(openOptions.metadata)
       .syncWithWorkspace(workspace);