import PocketBase from "pocketbase";

const POCKETBASE_URL = process.env.NEXT_PUBLIC_POCKETBASE_URL || "http://127.0.0.1:8090";

let pb: PocketBase | null = null;

export function getPocketBase(): PocketBase {
  if (typeof window === "undefined") {
    // Server-side: create new instance each time
    return new PocketBase(POCKETBASE_URL);
  }
  
  // Client-side: reuse singleton
  if (!pb) {
    pb = new PocketBase(POCKETBASE_URL);
    pb.autoCancellation(false);
    
    // Load auth from localStorage
    const storedAuth = localStorage.getItem("pocketbase_auth");
    if (storedAuth) {
      try {
        const authData = JSON.parse(storedAuth);
        pb.authStore.save(authData.token, authData.record);
      } catch {
        localStorage.removeItem("pocketbase_auth");
      }
    }
    
    // Persist auth changes to localStorage
    pb!.authStore.onChange(() => {
      if (pb!.authStore.isValid) {
        localStorage.setItem("pocketbase_auth", JSON.stringify({
          token: pb!.authStore.token,
          record: pb!.authStore.record,
        }));
      } else {
        localStorage.removeItem("pocketbase_auth");
      }
    });
  }
  return pb;
}

export { PocketBase };
export default getPocketBase;