#include "storage_monitor.h"

namespace roro {

void StorageMonitor::update(bool present, uint64_t totalBytes, uint64_t usedBytes) {
    StorageState next;
    next.present = present && totalBytes > 0;
    if (next.present) {
        next.totalBytes = totalBytes;
        next.usedBytes = usedBytes;
        next.usedPercent = static_cast<int>(usedBytes * 100 / totalBytes);
        bool full = totalBytes - usedBytes < kFullReserveBytes || usedBytes >= totalBytes;
        next.level = full ? 100 : next.usedPercent >= 90 ? 90 : next.usedPercent >= 80 ? 80 : 0;
        next.logsAllowed = next.level < 90;
        next.capturesAllowed = next.level < 100;
    }

    bool levelChanged = next.present && (next.level != state_.level || !state_.present);
    bool firstReading = !state_.present;
    state_ = next;

    if (levelChanged && !(firstReading && next.level == 0))
        bus_.publish(Event::withValues(EventType::StorageThreshold, next.usedPercent, next.level));

    if (next.present && next.level >= 80 && !warned_) {
        warned_ = true;
        bus_.publish(Event::withText(EventType::Notification, "SD card over 80% full",
                                     static_cast<int32_t>(NotificationLevel::Warning)));
    }
}

}  // namespace roro