import { NezhaAPI, ServerApi } from "@/app/types/nezha-api";
import { MakeOptional } from "@/app/types/utils";
import { NextResponse } from "next/server";

export async function GET(_: Request) {
  if (!process.env.NezhaBaseUrl) {
    return NextResponse.json(
      { error: "NezhaBaseUrl is not set" },
      { status: 400 },
    );
  }

  // Remove trailing slash
  var nezhaBaseUrl = process.env.NezhaBaseUrl;

  if (process.env.NezhaBaseUrl[process.env.NezhaBaseUrl.length - 1] === "/") {
    nezhaBaseUrl = process.env.NezhaBaseUrl.slice(0, -1);
  }

  try {
    const response = await fetch(nezhaBaseUrl + "/api/v1/server/details", {
      headers: {
        Authorization: process.env.NezhaAuth as string,
      },
      next: {
        revalidate: 0,
      },
    });
    const nezhaData = (await response.json()).result as NezhaAPI[];
    const data: ServerApi = {
      live_servers: 0,
      offline_servers: 0,
      total_bandwidth: 0,
      result: [],
    };
    const timestamp = Date.now() / 1000;
    data.result = nezhaData.map(
      (element: MakeOptional<NezhaAPI, "ipv4" | "ipv6" | "valid_ip">) => {
        if (timestamp - element.last_active > 300) {
          data.offline_servers += 1;
        } else {
          data.live_servers += 1;
        }
        data.total_bandwidth += element.status.NetOutTransfer;

        delete element.ipv4;
        delete element.ipv6;
        delete element.valid_ip;

        return element;
      },
    );

    return NextResponse.json(data, { status: 200 });
  } catch (error) {
    return NextResponse.json({ error: error }, { status: 200 });
  }
}