Unity - Simple Daily Rewards

DailyRewards.cs

using System;
using UnityEngine;

public static class DailyRewards {
    private const int RewardValue = 100;
    public static int Coins;

    private static DateTime LastRewardTime {
        get {
            long time = long.Parse(PlayerPrefs.GetString(nameof(LastRewardTime), "0"));
            return new DateTime(time);
        }
        set => PlayerPrefs.SetString(nameof(LastRewardTime), value.Ticks.ToString());
    }

    public static int PendingRewardValue {
        get {
            if (!HasPendingDailyReward) return -1;

            int value = PlayerPrefs.GetInt(nameof(PendingRewardValue), -1);

            if (value <= 0) {
                PendingRewardValue = RewardValue;
                return PendingRewardValue;
            }

            return value;
        }
        set => PlayerPrefs.SetInt(nameof(PendingRewardValue), value);
    }

    public static bool HasPendingDailyReward => DateTime.Now.Subtract(LastRewardTime).Days > 0;

    public static bool GetReward() {
        if (!HasPendingDailyReward) return false;

        Coins += PendingRewardValue;
        PendingRewardValue = -1;
        LastRewardTime = DateTime.Now;
        return true;
    }
}