using System;
using game;
using UniRx;

public class OfflineReward : ITimeReward
{
    public bool IsAvailable => _lastEntryTime != null; //TODO: to reactive

    private readonly ConfOfflineReward _config = null;
    private DateTime? _lastEntryTime = null;

    public OfflineReward(ConfOfflineReward conf)
    {
        _config = conf;   
        
        NetTime.Instance.IsAvailableAsObservable()
            .Subscribe(x =>
            {
                _lastEntryTime = x ? (DateTime?)NetTime.Instance.Time : null;
            });
    }
    
    public void Load(DataGame data)
    {
        if (string.IsNullOrEmpty(data.timeRewards.offline.lastEntryTime))
            ResetTime();
        else
            _lastEntryTime = DateTime.Parse(data.timeRewards.offline.lastEntryTime);
    }
    
    public bool TryGetReward(out ConfRewardItem reward)
    {
        reward = null;

        if (IsAvailable == false)
            return false;

        var offlineTime = CalculateOfflineTime();

        if (offlineTime.Hours <= 0)
            return false;

        return false;//(int) (Mathf.Clamp(offlineTime.Hours, 1, 24) * _config.bonusPerHour);
    }

    private TimeSpan CalculateOfflineTime()
    {
        if (IsAvailable == false)
            return default;
        
        return NetTime.Instance.Time - (DateTime)_lastEntryTime;
    }

    private void ResetTime()
    {
        _lastEntryTime = NetTime.Instance.Time;
    }

    public void Save(DataGame data)
    {
        data.timeRewards.offline.lastEntryTime = _lastEntryTime.ToString();
    }
}