84 lines
3.3 KiB
C#
84 lines
3.3 KiB
C#
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using BlazingPizza.ComponentsLibrary.Map;
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using System;
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using System.Collections.Generic;
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namespace BlazingPizza
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{
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public class OrderWithStatus
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{
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private static readonly string deliverdStatus = "Geliefert";
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private static readonly string preparingStatus = "Vorbereiten";
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private static readonly string deliveringStatus = "Wird geliefert";
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public readonly static TimeSpan PreparationDuration = TimeSpan.FromSeconds(10);
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public readonly static TimeSpan DeliveryDuration = TimeSpan.FromMinutes(1); // Unrealistic, but more interesting to watch
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public Order Order { get; set; }
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public string StatusText { get; set; }
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public bool IsDelivered => StatusText == deliverdStatus;
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public List<Marker> MapMarkers { get; set; }
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public static OrderWithStatus FromOrder(Order order)
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{
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// To simulate a real backend process, we fake status updates based on the amount
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// of time since the order was placed
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string statusText;
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List<Marker> mapMarkers;
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var dispatchTime = order.CreatedTime.Add(PreparationDuration);
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if (DateTime.Now < dispatchTime)
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{
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statusText = preparingStatus;
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mapMarkers = new List<Marker>
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{
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ToMapMarker("Du", order.DeliveryLocation, showPopup: true)
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};
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}
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else if (DateTime.Now < dispatchTime + DeliveryDuration)
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{
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statusText = deliveringStatus;
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var startPosition = ComputeStartPosition(order);
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var proportionOfDeliveryCompleted = Math.Min(1, (DateTime.Now - dispatchTime).TotalMilliseconds / DeliveryDuration.TotalMilliseconds);
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var driverPosition = LatLong.Interpolate(startPosition, order.DeliveryLocation, proportionOfDeliveryCompleted);
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mapMarkers = new List<Marker>
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{
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ToMapMarker("Du", order.DeliveryLocation),
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ToMapMarker("Fahrer", driverPosition, showPopup: true),
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};
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}
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else
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{
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statusText = deliverdStatus;
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mapMarkers = new List<Marker>
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{
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ToMapMarker("Lieferaddresse", order.DeliveryLocation, showPopup: true),
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};
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}
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return new OrderWithStatus
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{
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Order = order,
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StatusText = statusText,
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MapMarkers = mapMarkers,
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};
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}
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private static LatLong ComputeStartPosition(Order order)
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{
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// Random but deterministic based on order ID
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var rng = new Random(order.OrderId);
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var distance = 0.01 + rng.NextDouble() * 0.02;
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var angle = rng.NextDouble() * Math.PI * 2;
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var offset = (distance * Math.Cos(angle), distance * Math.Sin(angle));
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return new LatLong(order.DeliveryLocation.Latitude + offset.Item1, order.DeliveryLocation.Longitude + offset.Item2);
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}
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static Marker ToMapMarker(string description, LatLong coords, bool showPopup = false)
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=> new Marker { Description = description, X = coords.Longitude, Y = coords.Latitude, ShowPopup = showPopup };
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}
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}
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