88 lines
3.5 KiB
C#
88 lines
3.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Web.Http;
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using log4net;
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namespace bsmd.AIS2Service
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{
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public class SLRController : ApiController
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{
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private static readonly ILog _log = LogManager.GetLogger(typeof(SLRController));
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[HttpGet]
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public IEnumerable<ShipLocationReport> Get([FromUri] int? id)
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{
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if (!id.HasValue) return null;
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List<ShipLocationReport> result = AISManager.SQLiteStorage.GetShipLocationReports(id.Value);
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// Class B targets entfernen
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int classBReportCnt = result.RemoveAll(x => AISManager.SitRep.ContainsKey(x.MMSI) && (AISManager.SitRep[x.MMSI].IsClassB ?? false));
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_log.DebugFormat("removed {0} class B alarms from list"); // tut des?
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// auch alles entfernen was "abgelaufen" ist und nicht im SitRep enthalten ist
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int expiredCnt = result.RemoveAll(x => AISManager.SitRep.ContainsKey(x.MMSI) && ((DateTime.Now - x.Timestamp_Last).TotalMinutes > 1440));
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_log.InfoFormat("removed {0} expired (> 1 day) alarms from list");
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Dictionary<int, List<ShipLocationReport>> mmsiDict = new Dictionary<int, List<ShipLocationReport>>();
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foreach(ShipLocationReport report in result) {
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if (!mmsiDict.ContainsKey(report.MMSI)) mmsiDict[report.MMSI] = new List<ShipLocationReport>();
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mmsiDict[report.MMSI].Add(report);
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if (AISManager.SitRep.ContainsKey(report.MMSI))
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{
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report.Destination = AISManager.SitRep[report.MMSI].Destination;
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report.Name = AISManager.SitRep[report.MMSI].Name;
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report.NavStatus = AIS_PosReport.GetNavStatus(AISManager.SitRep[report.MMSI].NavStatus);
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report.IMO = AISManager.SitRep[report.MMSI].IMO;
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}
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}
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// determine "state" of vessel through alarm comparison. Possible values are:
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// 0 = stationary (= equals)
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// 1 = incoming
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// 2 = outgoing
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// 3 = expired
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foreach(int key in mmsiDict.Keys)
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{
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bool expired = true;
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DateTime? lastDate= null;
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bool? incoming = null;
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// first run through alarm list to determine state
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foreach(ShipLocationReport slr in mmsiDict[key])
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{
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if((DateTime.Now - slr.Timestamp_Last).TotalHours < Properties.Settings.Default.AutoAlarmExpiryHours) expired = false;
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if (lastDate == null)
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{
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lastDate = slr.Timestamp_Last;
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}
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else
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{
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incoming = slr.Timestamp_Last < lastDate;
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}
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}
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// second run through alarm list to set state flag in all entries
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foreach (ShipLocationReport slr in mmsiDict[key])
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{
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if (expired)
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{
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slr.VoyageDirection = 3;
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}
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else if (incoming.HasValue)
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{
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if (incoming.Value) { slr.VoyageDirection = 1; }
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else { slr.VoyageDirection = 2; }
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}
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else
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{
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slr.VoyageDirection = 0; // stationary / no comparison value
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}
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}
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}
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return result;
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}
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}
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}
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