import { writable } from "svelte/store";
import { apiFetch } from "../utils/api.js";

export const movieCount = writable(0);
let requestSeq = 0;
let lastValue = 0;
let zeroTimer = null;

export async function refreshMovieCount() {
  const ticket = ++requestSeq;
  try {
    const resp = await apiFetch("/api/movies");
    if (!resp.ok) throw new Error(`HTTP ${resp.status}`);
    const list = await resp.json();
    if (ticket !== requestSeq) return;
    const nextVal = Array.isArray(list) ? list.length : 0;
    if (nextVal > 0) {
      if (zeroTimer) {
        clearTimeout(zeroTimer);
        zeroTimer = null;
      }
      lastValue = nextVal;
      movieCount.set(nextVal);
    } else if (lastValue > 0) {
      if (zeroTimer) clearTimeout(zeroTimer);
      const zeroTicket = requestSeq;
      zeroTimer = setTimeout(() => {
        if (zeroTicket === requestSeq) {
          lastValue = 0;
          movieCount.set(0);
        }
        zeroTimer = null;
      }, 500);
    } else {
      lastValue = 0;
      movieCount.set(0);
    }
  } catch (err) {
    console.warn("⚠️ Movie count güncellenemedi:", err?.message || err);
    // Hata durumunda mevcut değeri koru, titreşimi önle
  }
}