import { createClient, type SupabaseClient } from "@supabase/supabase-js";
import { createError } from "h3";
import { useRuntimeConfig } from "#imports";

const globalKey = Symbol.for("slipmatz.supabase.serviceClient");

type GlobalWithSupabase = typeof globalThis & {
  [globalKey]?: SupabaseClient;
};

export const getSupabaseServiceClient = (): SupabaseClient => {
  const config = useRuntimeConfig();
  const supabaseUrl = config.public.supabase?.url;
  const serviceRoleKey = config.supabase?.serviceRoleKey;

  if (!supabaseUrl || !serviceRoleKey) {
    throw createError({
      statusCode: 500,
      statusMessage: "Supabase environment variables are not configured.",
    });
  }

  const scope = globalThis as GlobalWithSupabase;
  if (!scope[globalKey]) {
    scope[globalKey] = createClient(supabaseUrl, serviceRoleKey, {
      auth: {
        autoRefreshToken: false,
        persistSession: false,
      },
    });
  }

  return scope[globalKey]!;
};