import "server-only";
import { randomBytes, createHash } from "node:crypto";
import { NextRequest, NextResponse } from "next/server";
import { admin, required } from "./supabase";
import { requestOrigin } from "./request-origin";
import { prometheusAction } from "@/shared/prometheus";

export async function prometheusApi(
  request: NextRequest,
  reviewer: string,
  jsonBody: (request: NextRequest) => Promise<unknown>,
) {
  const client = admin();
  const endpoint = `${requestOrigin(request, process.env.MINEGEO_URL)}/api/metrics`;
  if (request.method === "GET") {
    const status = required(
      await client.rpc("prometheus_status", { p_reviewer: reviewer }),
    );
    return NextResponse.json({ ...(status as object), endpoint });
  }
  if (request.method === "POST") {
    const { action } = prometheusAction.parse(await jsonBody(request));
    const token =
      action === "rotate"
        ? `mg_metrics_${randomBytes(32).toString("hex")}`
        : null;
    const status = required(
      await client.rpc("configure_prometheus", {
        p_reviewer: reviewer,
        p_token_hash: token
          ? createHash("sha256").update(token).digest("hex")
          : null,
      }),
    );
    return NextResponse.json({ ...(status as object), endpoint, token });
  }
  return NextResponse.json({ error: "Not found" }, { status: 404 });
}