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

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

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

  if (isConvexEnabled()) {
    const { client } = await getAuthedConvexClient();
    const res = await client.query(api.mindmaps.get, { docId, mindmapId });
    return NextResponse.json({ data: res?.data ?? defaultMindmapData, source: "convex" });
  }

  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; mindmapId: string }> },
) {
  const { docId, mindmapId } = await params;

  if (isConvexEnabled()) {
    const { client } = await getAuthedConvexClient();
    const { data, createOnly } = (await request.json().catch(() => ({ data: null }))) as {
      data?: unknown;
      createOnly?: boolean;
    };

    try {
      const result = await client.mutation(api.mindmaps.put, {
        docId,
        mindmapId,
        data: data ?? defaultMindmapData,
        ...(typeof createOnly === "boolean" ? { createOnly } : {}),
      });
      return NextResponse.json(result ?? { ok: true });
    } catch (error) {
      return NextResponse.json({ error: (error as Error).message }, { status: 400 });
    }
  }

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

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

  if (isConvexEnabled()) {
    const { client } = await getAuthedConvexClient();
    try {
      const result = await client.mutation(api.mindmaps.softDelete, { docId, mindmapId });
      return NextResponse.json(result ?? { ok: true });
    } catch (error) {
      return NextResponse.json({ error: (error as Error).message }, { status: 400 });
    }
  }

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

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

  if (isConvexEnabled()) {
    const { client } = await getAuthedConvexClient();
    const { action } = (await request.json().catch(() => ({}))) as { action?: string };
    if (action !== "restore" && action !== "purge") {
      return NextResponse.json({ error: "不支持的操作" }, { status: 400 });
    }

    try {
      if (action === "purge") {
        const result = await client.mutation(api.mindmaps.purge, { docId, mindmapId });
        return NextResponse.json(result ?? { ok: true });
      }
      const result = await client.mutation(api.mindmaps.restore, { docId, mindmapId });
      return NextResponse.json(result ?? { ok: true });
    } catch (error) {
      const msg = (error as Error).message ?? "操作失败";
      const status = msg.includes("未找到") ? 404 : 400;
      return NextResponse.json({ error: msg }, { status });
    }
  }

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