feat: init @affine/copilot (#2511)

packages/plugin-infra/src/manager.ts

@@ -0,0 +1,50 @@
+import { DebugLogger } from '@affine/debug';
+import { rootStore } from '@affine/workspace/atom';
+import { atom } from 'jotai';
+
+import type { AffinePlugin, Definition } from './type';
+import type { Loader, PluginUIAdapter } from './type';
+
+// todo: for now every plugin is enabled by default
+export const affinePluginsAtom = atom<Record<string, AffinePlugin<string>>>({});
+
+const pluginLogger = new DebugLogger('affine:plugin');
+import { config } from '@affine/env';
+export function definePlugin<ID extends string>(
+  definition: Definition<ID>,
+  uiAdapterLoader?: Loader<Partial<PluginUIAdapter>>
+) {
+  if (!config.enablePlugin) {
+    return;
+  }
+  const basePlugin = {
+    definition,
+    uiAdapter: {},
+  };
+  rootStore.set(affinePluginsAtom, plugins => ({
+    ...plugins,
+    [definition.id]: basePlugin,
+  }));
+  if (uiAdapterLoader) {
+    const updateAdapter = (adapter: Partial<PluginUIAdapter>) => {
+      rootStore.set(affinePluginsAtom, plugins => ({
+        ...plugins,
+        [definition.id]: {
+          ...basePlugin,
+          uiAdapter: adapter,
+        },
+      }));
+    };
+
+    uiAdapterLoader
+      .load()
+      .then(({ default: adapter }) => updateAdapter(adapter));
+    if (import.meta.webpackHot) {
+      uiAdapterLoader.hotModuleReload(async _ => {
+        const adapter = (await _).default;
+        updateAdapter(adapter);
+        pluginLogger.info('[HMR] Plugin', definition.id, 'hot reloaded.');
+      });
+    }
+  }
+}