chore: init monorepo snapshot

src/app/api/documents/create-child/route.ts

@@ -0,0 +1,88 @@
+import { NextRequest, NextResponse } from "next/server";
+import { createSupabaseServerClient } from "@/lib/supabase/server";
+
+type CreateChildPayload = {
+  parentId: string | null;
+  title?: string;
+  blocks?: unknown;
+};
+
+export const dynamic = "force-dynamic";
+
+export async function POST(request: NextRequest) {
+  const supabase = await createSupabaseServerClient();
+  const {
+    data: { user },
+    error: authError,
+  } = await supabase.auth.getUser();
+
+  if (authError || !user) {
+    return NextResponse.json(
+      { message: "未登录无法创建页面" },
+      { status: 401 },
+    );
+  }
+
+  const { parentId, title, blocks }: CreateChildPayload =
+    await request.json();
+
+  if (parentId === undefined) {
+    return NextResponse.json(
+      { message: "缺少 parentId" },
+      { status: 400 },
+    );
+  }
+
+  const siblingQuery = supabase
+    .from("documents")
+    .select("id", { count: "exact", head: true })
+    .eq("user_id", user.id);
+
+  if (parentId) {
+    siblingQuery.eq("parent_id", parentId);
+  } else {
+    siblingQuery.is("parent_id", null);
+  }
+
+  const { count: siblingCount = 0, error: countError } =
+    await siblingQuery;
+
+  if (countError) {
+    return NextResponse.json(
+      { message: countError.message },
+      { status: 500 },
+    );
+  }
+
+  const resolvedTitle =
+    title?.trim() && title.trim().length > 0
+      ? title.trim()
+      : "未命名页面";
+
+  const contentPayload = Array.isArray(blocks) ? blocks : [];
+
+  const { data: newDoc, error } = await supabase
+    .from("documents")
+    .insert({
+      user_id: user.id,
+      parent_id: parentId,
+      title: resolvedTitle,
+      content: contentPayload,
+      sort_order: siblingCount,
+    })
+    .select("id, title")
+    .single();
+
+  if (error || !newDoc) {
+    return NextResponse.json(
+      { message: error?.message ?? "创建子页面失败" },
+      { status: 500 },
+    );
+  }
+
+  return NextResponse.json({
+    pageId: newDoc.id,
+    title: newDoc.title ?? resolvedTitle,
+  });
+}
+