// Copyright (2019-2023) Paul Scherrer Institute

#include "PreviewCounter.h"

PreviewCounter::PreviewCounter(std::chrono::microseconds in_period) : period(in_period), last_preview() {}

bool PreviewCounter::GeneratePreview() {
    std::unique_lock<std::mutex> ul(m);

    if (period.count() == 0)
        return false;

    auto now = std::chrono::system_clock::now();

    if (now > last_preview + period) {
        last_preview = now;
        return true;
    } else
        return false;
}

PreviewCounter &PreviewCounter::Period(std::chrono::microseconds in_period) {
    period = in_period;
    return *this;
}