/**
 * Supabase client for Server Components and Route Handlers.
 * Uses the cookies() API to read+write the user's session.
 *
 * If NEXT_PUBLIC_SUPABASE_URL is not set (e.g., local dev without Supabase),
 * returns a stub that throws — callers should check `isSupabaseConfigured()`.
 */
import { createServerClient, type CookieOptions } from "@supabase/ssr";
import { cookies } from "next/headers";

export function isSupabaseConfigured(): boolean {
  return Boolean(process.env.NEXT_PUBLIC_SUPABASE_URL && process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY);
}

export async function createClient() {
  const url = process.env.NEXT_PUBLIC_SUPABASE_URL;
  const key = process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY;
  if (!url || !key) {
    throw new Error("Supabase env vars not set");
  }
  const cookieStore = await cookies();
  return createServerClient(url, key, {
    cookies: {
      getAll() {
        return cookieStore.getAll();
      },
      setAll(toSet: Array<{ name: string; value: string; options?: CookieOptions }>) {
        try {
          toSet.forEach(({ name, value, options }) => cookieStore.set(name, value, options));
        } catch {
          // setAll fails in Server Components (no setter); ignore — middleware handles refresh.
        }
      },
    },
  });
}

/**
 * Admin client using service_role key. Bypasses RLS. USE ONLY in trusted server
 * code (never expose to clients). Required for inserting usage_events under
 * service_role, deleting users, etc.
 */
export function createServiceClient() {
  const url = process.env.NEXT_PUBLIC_SUPABASE_URL;
  const key = process.env.SUPABASE_SERVICE_ROLE_KEY;
  if (!url || !key) throw new Error("Supabase service env vars not set");
  // Lazy import to avoid bundling on client
  // eslint-disable-next-line @typescript-eslint/no-require-imports
  const { createClient } = require("@supabase/supabase-js");
  return createClient(url, key, {
    auth: { autoRefreshToken: false, persistSession: false },
  });
}