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477namespace Duets.CityExplorer
open Avalonia
open Avalonia.Controls
open Avalonia.Controls.Shapes
open Avalonia.Layout
open Avalonia.Markup.Xaml
open Avalonia.Media
open Duets.Entities
type MainWindow() =
inherit Window()
// Helper to parse string to CityId DU
let tryParseCityId (name: string) =
match name with
| "London" -> Some CityId.London
| "LosAngeles" -> Some CityId.LosAngeles
| "Madrid" -> Some CityId.Madrid
| "NewYork" -> Some CityId.NewYork
| "Prague" -> Some CityId.Prague
| _ -> None
// Show places summary for the city
member private this.ShowPlacesSummary
(city: City, placesSummaryPanel: StackPanel)
=
placesSummaryPanel.Children.Clear()
let placesSummary =
city.Zones
|> Map.values
|> Seq.collect (fun zone -> zone.Streets.Nodes |> Map.values)
|> Seq.collect _.Places
|> Seq.countBy (fun place ->
place.PlaceType |> World.Place.Type.toIndex)
|> Map.ofSeq
let summaryTitle =
TextBlock(
Text = "Places In City",
FontWeight = FontWeight.Bold,
Margin = Thickness(0.0, 0.0, 0.0, 4.0)
)
placesSummaryPanel.Children.Add(summaryTitle)
placesSummary
|> Map.iter (fun placeTypeIndex count ->
let placeTypeText = placeTypeIndex |> string
let summaryText = TextBlock(Text = $"{placeTypeText}: {count}")
placesSummaryPanel.Children.Add(summaryText))
// Show metro lines for the city
member private this.ShowMetroLines
(
city: City,
zonesPanel: StackPanel,
zoneDetailsPanel: StackPanel,
placesSummaryPanel: StackPanel
) =
zonesPanel.Children.Clear()
city.MetroLines
|> Map.toList
|> List.iter (fun (lineId, line) ->
let lineStack =
StackPanel(
Orientation = Orientation.Horizontal,
Margin = Thickness(0.0, 0.0, 0.0, 16.0),
Spacing = 8.0
)
// Choose color based on lineId
let lineColor =
match lineId with
| MetroLineId.Red -> Colors.IndianRed
| MetroLineId.Blue -> Colors.SteelBlue
// Get ordered list of zones for this line
let rec walkLine acc currentZoneId =
match line.Stations |> Map.tryFind currentZoneId with
| Some(MetroStationConnection.OnlyNext next) ->
walkLine (acc @ [ currentZoneId ]) next
| Some(MetroStationConnection.PreviousAndNext(_, next)) ->
walkLine (acc @ [ currentZoneId ]) next
| _ -> acc @ [ currentZoneId ]
// Find the starting zone (no previous)
let startZoneId =
line.Stations
|> Map.tryFindKey (fun _ conn ->
match conn with
| MetroStationConnection.OnlyNext _ -> true
| MetroStationConnection.PreviousAndNext(prev, _) ->
not (line.Stations.ContainsKey prev)
| _ -> false)
|> Option.defaultValue (
line.Stations |> Map.toList |> List.head |> fst
)
let orderedZones = walkLine [] startZoneId
// Draw the line
orderedZones
|> List.iteri (fun i zoneId ->
// Check if this zone is a transfer (connected to 2+ lines)
let isTransfer =
match city.Zones.TryGetValue(zoneId) with
| true, zone -> zone.MetroStations.Count >= 2
| _ -> false
let border = Border()
border.Background <- SolidColorBrush(Colors.White)
border.BorderBrush <-
if isTransfer then
SolidColorBrush(Colors.MediumSeaGreen)
else
SolidColorBrush(lineColor)
border.BorderThickness <- Thickness(2.0)
border.CornerRadius <- CornerRadius(8.0)
border.Padding <- Thickness(12.0)
let text =
TextBlock(
Text = city.Zones[zoneId].Name,
FontSize = 16.0,
Foreground = SolidColorBrush(Colors.Black)
)
border.Child <- text
border.PointerPressed.Add(fun _ ->
this.ShowZoneDetails(
city,
zoneId,
zonesPanel,
zoneDetailsPanel,
placesSummaryPanel
))
lineStack.Children.Add(border)
// Draw a line between nodes except after the last
if i < orderedZones.Length - 1 then
let connector =
Border(
Width = 32.0,
Height = 4.0,
Background = SolidColorBrush(lineColor),
VerticalAlignment = VerticalAlignment.Center
)
lineStack.Children.Add(connector))
// Add a label for the line
let label =
TextBlock(
Text = lineId.ToString(),
Foreground = SolidColorBrush(lineColor),
FontWeight = FontWeight.Bold,
Margin = Thickness(0.0, 0.0, 0.0, 4.0)
)
zonesPanel.Children.Add(label)
zonesPanel.Children.Add(lineStack))
// Show street graph for a zone
member private this.ShowStreetGraph(zone: Zone) =
let streetGraphCanvas =
Canvas(
Width = 900.0,
Height = 200.0,
Background = SolidColorBrush(Colors.LightGray),
Margin = Thickness(0.0, 0.0, 0.0, 16.0)
)
let streets = zone.Streets.Nodes
let connections = zone.Streets.Connections
if not streets.IsEmpty then
// Check if this is a linear graph (each node has at most 2 connections)
let isLinearGraph =
connections
|> Map.forall (fun _ nodeConnections ->
nodeConnections |> Map.count <= 2)
let streetPositions =
if isLinearGraph && streets.Count > 2 then
// Use linear layout for linear graphs
let startingStreet = zone.Streets.StartingNode
let visited = ref Set.empty
let orderedStreets = ref []
// Traverse the graph linearly starting from the starting node
let rec traverse currentStreetId =
if not (visited.Value.Contains(currentStreetId)) then
visited.Value <- visited.Value.Add(currentStreetId)
orderedStreets.Value <-
currentStreetId :: orderedStreets.Value
// Find next unvisited connected street
match connections.TryFind(currentStreetId) with
| Some nodeConnections ->
let nextStreet =
nodeConnections
|> Map.values
|> Seq.tryFind (fun streetId ->
not (visited.Value.Contains(streetId)))
match nextStreet with
| Some nextId -> traverse nextId
| None -> ()
| None -> ()
traverse startingStreet
let orderedStreets = List.rev orderedStreets.Value
// Ensure all streets have positions, even if not visited in traversal
let allStreetIds = streets |> Map.keys |> Set.ofSeq
let visitedStreetIds = orderedStreets |> Set.ofList
let unvisitedStreets =
Set.difference allStreetIds visitedStreetIds
|> Set.toList
let finalOrderedStreets = orderedStreets @ unvisitedStreets
// Position streets in a horizontal line
let spacing = 800.0 / float (finalOrderedStreets.Length - 1)
let startX = 50.0
let y = 100.0
finalOrderedStreets
|> List.mapi (fun i streetId ->
let x = startX + (float i * spacing)
(streetId, Point(x, y)))
|> Map.ofList
else
// Use circular layout for complex graphs or small graphs
let angleStep = 2.0 * System.Math.PI / float streets.Count
let radius = 80.0
let centerX = 300.0 // Adjusted for larger canvas
let centerY = 100.0
streets
|> Map.toList
|> List.mapi (fun i (streetId, _) ->
let angle = float i * angleStep
let x = centerX + radius * System.Math.Cos(angle)
let y = centerY + radius * System.Math.Sin(angle)
(streetId, Point(x, y)))
|> Map.ofList
// Draw edges first, so they appear behind nodes
for startStreetId, endStreetMap in connections |> Map.toList do
let startPos = streetPositions[startStreetId]
for endStreetId in (endStreetMap |> Map.values) do
if startStreetId < endStreetId then
let endPos = streetPositions[endStreetId]
let line =
Line(
StartPoint = startPos,
EndPoint = endPos,
Stroke = SolidColorBrush(Colors.Black),
StrokeThickness = 1.0
)
streetGraphCanvas.Children.Add(line)
// Draw nodes
for streetId, street in streets |> Map.toList do
let pos = streetPositions[streetId]
let hasMetroStation =
street.Places
|> List.exists (fun p ->
p.PlaceType = PlaceType.MetroStation)
let node =
Ellipse(
Width = 20.0,
Height = 20.0,
Fill =
if hasMetroStation then
SolidColorBrush(Colors.MediumSeaGreen)
else
SolidColorBrush(Colors.DarkSlateBlue)
)
Canvas.SetLeft(node, pos.X - 10.0)
Canvas.SetTop(node, pos.Y - 10.0)
streetGraphCanvas.Children.Add(node)
let label = TextBlock(Text = street.Name, FontSize = 12.0)
// Position labels differently based on layout type
if isLinearGraph && streets.Count > 2 then
// For linear layout, alternate labels above and below to prevent overlap
let streetIndex =
streetPositions
|> Map.toList
|> List.findIndex (fun (id, _) -> id = streetId)
let isEven = streetIndex % 2 = 0
Canvas.SetLeft(label, pos.X - 30.0) // Center the label under the node
Canvas.SetTop(
label,
if isEven then pos.Y + 25.0 else pos.Y - 35.0
) // Alternate above/below
else
// For circular layout, use original positioning
Canvas.SetLeft(label, pos.X + 15.0)
Canvas.SetTop(label, pos.Y - 8.0)
streetGraphCanvas.Children.Add(label)
streetGraphCanvas
// Show places by type for a zone
member private this.ShowPlacesByType(zone: Zone, detailsStack: StackPanel) =
for _, street in zone.Streets.Nodes |> Map.toList do
let streetHeader =
TextBlock(
Text = street.Name,
FontSize = 18.0,
FontWeight = FontWeight.Bold,
Margin = Thickness(0.0, 12.0, 0.0, 4.0)
)
detailsStack.Children.Add(streetHeader)
let placesByType = street.Places |> List.groupBy _.PlaceType
for placeType, places in placesByType do
let typeHeaderBorder =
Border(
Background = SolidColorBrush(Colors.DarkSlateGray),
CornerRadius = CornerRadius(6.0),
Padding = Thickness(8.0, 2.0, 8.0, 2.0),
Margin = Thickness(8.0, 8.0, 0.0, 2.0)
)
let placeTypeText =
placeType |> World.Place.Type.toIndex |> string
let typeHeaderText =
TextBlock(
Text = placeTypeText,
FontWeight = FontWeight.Bold
)
typeHeaderBorder.Child <- typeHeaderText
detailsStack.Children.Add(typeHeaderBorder)
for place in places do
let info =
match place.PlaceType with
| PlaceType.ConcertSpace c -> $" ({c})"
| PlaceType.Hotel h -> $" ({h})"
| PlaceType.RadioStudio r -> $" ({r})"
| PlaceType.RehearsalSpace r -> $" ({r})"
| PlaceType.Studio s -> $" ({s})"
| _ -> ""
let placeText =
TextBlock(
Text = $"- {place.Name}{info}",
Margin = Thickness(16.0, 0.0, 0.0, 0.0)
)
detailsStack.Children.Add(placeText)
// Show zone details
member private this.ShowZoneDetails
(
city: City,
zoneId: ZoneId,
zonesPanel: StackPanel,
zoneDetailsPanel: StackPanel,
placesSummaryPanel: StackPanel
) =
// Hide city overview panels and show zone details
zonesPanel.IsVisible <- false
placesSummaryPanel.IsVisible <- false
zoneDetailsPanel.IsVisible <- true
zoneDetailsPanel.Children.Clear()
let detailsStack = StackPanel()
let arrowBtn =
Button(Content = "← Back", Margin = Thickness(0.0, 0.0, 0.0, 12.0))
arrowBtn.Click.Add(fun _ ->
// Show city overview panels and hide zone details
zoneDetailsPanel.IsVisible <- false
zonesPanel.IsVisible <- true
placesSummaryPanel.IsVisible <- true)
detailsStack.Children.Add(arrowBtn)
let detailsText =
TextBlock(
Text = $"Zone: {city.Zones[zoneId].Name}",
FontSize = 20.0,
FontWeight = FontWeight.Bold,
Margin = Thickness(0.0, 0.0, 0.0, 8.0)
)
detailsStack.Children.Add(detailsText)
let zone = city.Zones[zoneId]
// Add street graph
let streetGraphCanvas = this.ShowStreetGraph(zone)
detailsStack.Children.Add(streetGraphCanvas)
// Add places by type
this.ShowPlacesByType(zone, detailsStack)
zoneDetailsPanel.Children.Add(detailsStack)
override this.OnInitialized() =
base.OnInitialized()
AvaloniaXamlLoader.Load(this)
let world = Duets.Data.World.World.get
let cityMap = world.Cities
let cities =
cityMap |> Map.toList |> List.map (fun (id, _) -> id.ToString())
let listBox = this.FindControl<ListBox>("CitiesListBox")
let zonesPanel = this.FindControl<StackPanel>("ZonesPanel")
let zoneDetailsPanel = this.FindControl<StackPanel>("ZoneDetailsPanel")
let placesSummaryPanel =
this.FindControl<StackPanel>("PlacesSummaryPanel")
listBox.ItemsSource <- cities
listBox.SelectionChanged.Add(fun _ ->
zonesPanel.Children.Clear()
zoneDetailsPanel.Children.Clear()
placesSummaryPanel.Children.Clear()
// Show city overview panels, hide zone details
zonesPanel.IsVisible <- true
placesSummaryPanel.IsVisible <- true
zoneDetailsPanel.IsVisible <- false
match listBox.SelectedItem with
| :? string as cityName ->
match tryParseCityId cityName with
| Some cityId ->
let cityOpt = cityMap |> Map.tryFind cityId
match cityOpt with
| Some city ->
this.ShowPlacesSummary(city, placesSummaryPanel)
this.ShowMetroLines(
city,
zonesPanel,
zoneDetailsPanel,
placesSummaryPanel
)
| None -> ()
| None -> ()
| _ -> ())