import { onUnmounted, ref } from 'vue';

export function usePolling(callback, intervalMs = 2000) {
    const isPolling = ref(false);
    let timer = null;
    let consecutiveErrors = 0;

    function start() {
        if (timer) stop();
        isPolling.value = true;
        consecutiveErrors = 0;
        timer = setInterval(async () => {
            try {
                const shouldStop = await callback();
                consecutiveErrors = 0;
                if (shouldStop) stop();
            } catch {
                consecutiveErrors++;
                if (consecutiveErrors >= 3) stop();
            }
        }, intervalMs);
    }

    function stop() {
        if (timer) {
            clearInterval(timer);
            timer = null;
        }
        isPolling.value = false;
    }

    onUnmounted(stop);

    return { isPolling, start, stop };
}