implement weather helper

Core/Helpers/WeatherHelper.cs

@@ -1,15 +1,35 @@
 using Core.Annotations;
+using Core.Models.Enums;
+using Core.Models.Spt.Config;
+using Core.Servers;
+using Core.Utils;
+using ILogger = Core.Models.Utils.ILogger;
 
 namespace Core.Helpers;
 
 [Injectable]
 public class WeatherHelper
 {
-    public WeatherHelper()
+    private readonly ILogger _logger;
+    private readonly TimeUtil _timeUtil;
+    private readonly ConfigServer _configServer;
+
+    private readonly WeatherConfig _weatherConfig;
+
+    public WeatherHelper
+    (
+        ILogger logger,
+        TimeUtil timeUtil,
+        ConfigServer configServer
+    )
     {
-        
+        _logger = logger;
+        _timeUtil = timeUtil;
+        _configServer = configServer;
+
+        _weatherConfig = _configServer.GetConfig<WeatherConfig>(ConfigTypes.WEATHER);
     }
-    
+
     /// <summary>
     /// Get the current in-raid time - does not include an accurate date, only time
     /// </summary>
@@ -17,7 +37,14 @@ public class WeatherHelper
     /// <returns>Date object of current in-raid time</returns>
     public DateTime GetInRaidTime(double? timestamp = null)
     {
-        throw new NotImplementedException();
+        // tarkov time = (real time * 7 % 24 hr) + 3 hour
+        var russiaOffsetMilliseconds = _timeUtil.GetHoursAsSeconds(3) * 1000;
+        var twentyFourHoursMilliseconds = _timeUtil.GetHoursAsSeconds(24) * 1000;
+        var currentTimestampMilliSeconds = (timestamp is not null) ? timestamp : _timeUtil.GetTimeStamp();
+
+        return new DateTime().AddMilliseconds(
+            (russiaOffsetMilliseconds + russiaOffsetMilliseconds * _weatherConfig.Acceleration) %
+                                              twentyFourHoursMilliseconds);
     }
 
     /// <summary>
@@ -25,13 +52,20 @@ public class WeatherHelper
     /// </summary>
     /// <param name="timeVariant">PASS OR CURR (from raid settings)</param>
     /// <returns>True when nighttime</returns>
-    public bool IsNightTime(DateTime timeVariant)
+    public bool IsNightTime(DateTimeEnum timeVariant)
     {
-        throw new NotImplementedException();
+        var time = GetInRaidTime();
+        
+        // getInRaidTime() provides left side value, if player chose right side, set ahead 12 hrs
+        if (timeVariant == DateTimeEnum.PAST)
+            time.AddHours(12);
+        
+        // Night if after 9pm or before 5am
+        return time.Hour > 21 || time.Hour < 5;
     }
 
     public bool IsHourAtNightTime(int currentHour)
     {
-        throw new NotImplementedException();
+        return currentHour > 21 || currentHour <= 5;
     }
 }