import { NextResponse } from "next/server";
import { isConvexEnabled } from "@/lib/convex/enabled";
import { getAuthedConvexClient } from "@/lib/convex/route";
import { api } from "@/lib/convex/api";
import { buildMindmapRouteMeta } from "@/lib/mindmap/mindmapRouteMeta";

const defaultMindmapData = {
  data: { text: "中心主题" },
  children: [],
};

export async function GET(
  request: Request,
  { params }: { params: Promise<{ docId: string }> },
) {
  const { docId } = await params;

  if (isConvexEnabled()) {
    const { auth, client } = await getAuthedConvexClient();
    const mindmapId = `legacy-${docId}`;
    const res = await client.query(api.mindmaps.get, { docId, mindmapId });
    return NextResponse.json({
      data: res?.data ?? defaultMindmapData,
      source: "convex",
      meta: {
        ...buildMindmapRouteMeta(request, {
          workspaceId: res?.meta?.workspace_id ?? null,
          documentId: docId,
          mindmapId,
          ownerUserId: auth.userId,
        }),
        exists: Boolean(res?.meta?.exists),
        deletedAt: res?.meta?.deleted_at ?? null,
        createdAt: res?.meta?.created_at ?? null,
        updatedAt: res?.meta?.updated_at ?? null,
      },
    });
  }

  return NextResponse.json({ error: "当前仅支持 Convex 模式" }, { status: 501 });
}

export async function POST(
  request: Request,
  { params }: { params: Promise<{ docId: string }> },
) {
  const { docId } = await params;

  if (isConvexEnabled()) {
    const { auth, client } = await getAuthedConvexClient();
    const mindmapId = `legacy-${docId}`;
    const payload = (await request.json().catch(() => ({}))) as { data?: unknown };
    const result = await client.mutation(api.mindmaps.put, {
      docId,
      mindmapId,
      data: payload.data ?? defaultMindmapData,
    });
    return NextResponse.json({
      ...(result ?? { ok: true }),
      meta: {
        ...buildMindmapRouteMeta(request, {
          workspaceId: result?.workspace_id ?? null,
          documentId: docId,
          mindmapId,
          ownerUserId: auth.userId,
        }),
        updatedAt: result?.updated_at ?? null,
      },
    });
  }

  return NextResponse.json({ error: "当前仅支持 Convex 模式" }, { status: 501 });
}

export async function DELETE(
  request: Request,
  { params }: { params: Promise<{ docId: string }> },
) {
  const { docId } = await params;

  if (isConvexEnabled()) {
    const { auth, client } = await getAuthedConvexClient();
    const mindmapId = `legacy-${docId}`;
    const result = await client.mutation(api.mindmaps.softDelete, { docId, mindmapId });
    return NextResponse.json({
      ...(result ?? { ok: true }),
      meta: {
        ...buildMindmapRouteMeta(request, {
          workspaceId: result?.workspace_id ?? null,
          documentId: docId,
          mindmapId,
          ownerUserId: auth.userId,
        }),
        deletedAt: result?.deleted_at ?? null,
      },
    });
  }

  return NextResponse.json({ error: "当前仅支持 Convex 模式" }, { status: 501 });
}