import "server-only";
import { createServerClient } from "@supabase/ssr";
import { cookies } from "next/headers";
import type { Database } from "./types";

// For use in Server Components and Server Actions. Respects the signed-in
// user's session, so all reads/writes go through RLS as that user. Uses only
// the anon key (never the service role key) — the user's own session cookie
// is what determines access, via RLS.
export async function createClient() {
  const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL;
  const supabaseAnonKey = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY;

  if (!supabaseUrl) {
    throw new Error("Missing NEXT_PUBLIC_SUPABASE_URL");
  }
  if (!supabaseAnonKey) {
    throw new Error("Missing NEXT_PUBLIC_SUPABASE_ANON_KEY");
  }

  const cookieStore = await cookies();

  return createServerClient<Database>(supabaseUrl, supabaseAnonKey, {
    cookies: {
      getAll() {
        return cookieStore.getAll();
      },
      setAll(cookiesToSet) {
        try {
          cookiesToSet.forEach(({ name, value, options }) =>
            cookieStore.set(name, value, options)
          );
        } catch {
          // Called from a Server Component during render — safe to ignore
          // because proxy.ts refreshes the session cookie on every request.
        }
      },
    },
  });
}