public async Task <HttpResponseMessage> Get(string latitude, string longitude, int sunriseTimeOffsetMinutes = 0, int sunsetTimeOffsetMinutes = 0)
{
var sunriseSunsetInfo = await SunriseSunsetRestClient.GetSunriseSunsetInfo(latitude, longitude);
bool daylight = false;
if (sunriseSunsetInfo != null)
{
var adjustedSunrise = sunriseSunsetInfo.Sunrise.AddMinutes(sunriseTimeOffsetMinutes);
var adjustedSunset = sunriseSunsetInfo.Sunset.AddMinutes(sunsetTimeOffsetMinutes);
daylight = (DateTimeOffset.UtcNow >= adjustedSunrise &&
DateTimeOffset.UtcNow < adjustedSunset);
}
return(Request.CreateResponse(HttpStatusCode.OK, new { daylight }));
}
public override void Run()
{
var latitude = CloudConfigurationManager.GetSetting("Latitude");
var longitude = CloudConfigurationManager.GetSetting("Longitude");
var timeZoneId = CloudConfigurationManager.GetSetting("TimeZoneName");
var sunriseTimeOffsetMinutes = int.Parse(CloudConfigurationManager.GetSetting("SunriseTimeOffsetMinutes"));
var sunsetTimeOffsetMinutes = int.Parse(CloudConfigurationManager.GetSetting("SunsetTimeOffsetMinutes"));
var light = Light.Unknown;
SunriseSunset sunriseSunsetInfo = null;
// figure out the UTC value of 4am in the configured time zone
var dailyCheckTimeLocal = new DateTime(DateTimeOffset.UtcNow.Year,
DateTimeOffset.UtcNow.Month, DateTimeOffset.UtcNow.Day, 4, 0, 0);
var timeZone = TimeZoneInfo.FindSystemTimeZoneById(timeZoneId);
var dailyCheckTimeUtc = TimeZoneInfo.ConvertTimeToUtc(dailyCheckTimeLocal, timeZone);
while (!_completedEvent.WaitOne(1000))
{
try
{
// check on startup or everyday at 4am local time
if (sunriseSunsetInfo == null || ((sunriseSunsetInfo.Sunrise.Day < DateTimeOffset.UtcNow.Day ||
sunriseSunsetInfo.Sunrise.Month < DateTimeOffset.UtcNow.Month ||
sunriseSunsetInfo.Sunrise.Year < DateTimeOffset.UtcNow.Year) &&
DateTimeOffset.UtcNow.Hour == dailyCheckTimeUtc.Hour))
{
// use a temp variable that way if the call fails after 3 tries but we still have
// data from a previous successful call we can still use that
for (var i = 0; i < 3; i++)
{
var tmpSunriseSunsetInfo = SunriseSunsetRestClient.GetSunriseSunsetInfo(latitude, longitude).Result;
if (tmpSunriseSunsetInfo != null)
{
sunriseSunsetInfo = tmpSunriseSunsetInfo;
Trace.TraceInformation(string.Format("Today's sunrise is at {0} UTC and sunset is at {1} UTC",
sunriseSunsetInfo.Sunrise.ToString("h:mm tt"),
sunriseSunsetInfo.Sunset.ToString("h:mm tt")));
break;
}
Trace.TraceError("Error trying to get sunrise/sunset data, retrying...");
Thread.Sleep(30000); // wait 30 seconds and try again
}
}
if (sunriseSunsetInfo == null)
{
throw new Exception("Failed to get sunrise/sunset data after 3 retries");
}
var adjustedSunrise = sunriseSunsetInfo.Sunrise.AddMinutes(sunriseTimeOffsetMinutes);
var adjustedSunset = sunriseSunsetInfo.Sunset.AddMinutes(sunsetTimeOffsetMinutes);
var daytime = (DateTimeOffset.UtcNow >= adjustedSunrise &&
DateTimeOffset.UtcNow < adjustedSunset);
if (daytime)
{
if (light != Light.Off)
{
// turn light off
Trace.TraceInformation("Turning light off");
PublishLightState(Light.Off);
light = Light.Off;
}
}
else
{
if (light != Light.On)
{
// turn light on
Trace.TraceInformation("Turning light on");
PublishLightState(Light.On);
light = Light.On;
}
}
}
catch (Exception ex)
{
Trace.TraceError("Error: " + ex.Message);
Thread.Sleep(TimeSpan.FromMinutes(1)); // throttle down in case this is a recurring error
}
}
}
