refactor!: next generation AFFiNE code structure (#1176)

apps/web/src/pages/index.tsx

@@ -1,7 +1,75 @@
-import type { NextPage } from 'next';
+import { useAtom } from 'jotai';
+import { NextPage } from 'next';
+import { useRouter } from 'next/router';
+import React, { useEffect } from 'react';
 
-const Home: NextPage = () => {
-  return <div title="Home Page"></div>;
+import { currentWorkspaceIdAtom } from '../atoms';
+import { PageLoading } from '../components/pure/loading';
+import { refreshDataCenter, useWorkspaces } from '../hooks/use-workspaces';
+
+const IndexPage: NextPage = () => {
+  const router = useRouter();
+  useEffect(() => {
+    const controller = new AbortController();
+    refreshDataCenter(controller.signal);
+    return () => {
+      controller.abort();
+    };
+  }, []);
+  const [workspaceId] = useAtom(currentWorkspaceIdAtom);
+  const workspaces = useWorkspaces();
+  useEffect(() => {
+    if (!router.isReady) {
+      return;
+    }
+    const targetWorkspace = workspaces.find(w => w.id === workspaceId);
+    if (workspaceId && targetWorkspace) {
+      const pageId =
+        targetWorkspace.blockSuiteWorkspace.meta.pageMetas.at(0)?.id;
+      if (pageId) {
+        router.replace({
+          pathname: '/workspace/[workspaceId]/[pageId]',
+          query: {
+            workspaceId,
+            pageId,
+          },
+        });
+        return;
+      } else {
+        router.replace({
+          pathname: '/workspace/[workspaceId]/all',
+          query: {
+            workspaceId,
+          },
+        });
+        return;
+      }
+    }
+    const firstWorkspace = workspaces.at(0);
+    if (firstWorkspace) {
+      const pageId =
+        firstWorkspace.blockSuiteWorkspace.meta.pageMetas.at(0)?.id;
+      if (pageId) {
+        router.replace({
+          pathname: '/workspace/[workspaceId]/[pageId]',
+          query: {
+            workspaceId: firstWorkspace.id,
+            pageId,
+          },
+        });
+        return;
+      } else {
+        router.replace({
+          pathname: '/workspace/[workspaceId]/all',
+          query: {
+            workspaceId: firstWorkspace.id,
+          },
+        });
+        return;
+      }
+    }
+  }, [router, workspaceId, workspaces]);
+  return <PageLoading />;
 };
 
-export default Home;
+export default IndexPage;