From 82e2c03d5730d933ca4d081a0937aa62935a6610 Mon Sep 17 00:00:00 2001
From: Garth Vander Houwen <garthvh@yahoo.com>
Date: Sun, 23 Apr 2023 07:39:19 -0700
Subject: [PATCH] Add back tile server settings

---
 .../Views/Map/Custom/MapViewSwiftUI.swift     | 72 +++++++++++++++++++
 Meshtastic/Views/Settings/AppSettings.swift   | 13 ++++
 2 files changed, 85 insertions(+)

diff --git a/Meshtastic/Views/Map/Custom/MapViewSwiftUI.swift b/Meshtastic/Views/Map/Custom/MapViewSwiftUI.swift
index 778302ed..af5e576e 100644
--- a/Meshtastic/Views/Map/Custom/MapViewSwiftUI.swift
+++ b/Meshtastic/Views/Map/Custom/MapViewSwiftUI.swift
@@ -30,6 +30,11 @@ struct MapViewSwiftUI: UIViewRepresentable {
 	var customMapOverlay: CustomMapOverlay?
 	@State private var presentCustomMapOverlayHash: CustomMapOverlay?
 	
+	// Custom Tile Server
+	@AppStorage("meshMapCustomTileServer") private var tileServerUrl = ""
+	var tileRenderer: MKTileOverlayRenderer?
+	let tileServer: MapTileServerLinks = .openStreetMaps
+	
 	func makeUIView(context: Context) -> MKMapView {
 		// Map View Parameters
 		mapView.mapType = mapViewType
@@ -65,6 +70,10 @@ struct MapViewSwiftUI: UIViewRepresentable {
 		mapView.showsScale = true
 		mapView.showsTraffic = true
 		
+		let overlay = TileServerOverlay() // Offline-Map-Tiles
+			   overlay.canReplaceMapContent = true
+			   mapView.addOverlay(overlay, level: .aboveLabels)
+		
 		#if targetEnvironment(macCatalyst)
 		// Show the default always visible compass and the mac only controls
 		mapView.showsCompass = true
@@ -167,6 +176,29 @@ struct MapViewSwiftUI: UIViewRepresentable {
 					mapView.showsUserLocation = true
 				}
 				mapView.setUserTrackingMode(userTrackingMode, animated: true)
+				
+				if tileServerUrl.count > 0 {
+					tileRenderer?.alpha = 0.0
+					let overlays = mapView.overlays
+					if mapView.mapType == .standard {
+						let overlay = MKTileOverlay(urlTemplate: tileServerUrl)
+						if overlays.contains(where: {$0 is MKPolyline}) {
+							mapView.addOverlay(overlay, level: .aboveLabels)
+							if let poly_overlay = overlays.filter({$0 is MKPolyline}).first {
+								mapView.addOverlay(poly_overlay, level: .aboveRoads)
+							}
+						} else {
+							mapView.addOverlay(overlay, level: .aboveRoads)
+							
+						}
+					} else {
+						for overlay in overlays {
+							if let ove = overlay as? MKTileOverlay {
+								mapView.removeOverlay(ove)
+							}
+						}
+					}
+				}
 			}
 		}
 	}
@@ -465,3 +497,43 @@ struct MapViewSwiftUI: UIViewRepresentable {
 		}
 	}
 }
+
+class TileServerOverlay: MKTileOverlay {
+	
+	override func url(forTilePath path: MKTileOverlayPath) -> URL { // lädt die Map-Tiles
+		
+		if path.z <= 5 { // Es wurden nur Map-Tiles für z <= 5 geladen.
+			
+			let fileManager = FileManager.default // Objekt zum Verwalten des Dateisystems
+			
+			if var url = fileManager.urls(for: .cachesDirectory, in: .userDomainMask).first { // Url vom Cache-Verzeichnis
+				
+				// Pfad wird erstellt
+				
+				url.appendPathComponent("map")
+				url.appendPathComponent("\(path.z)")
+				url.appendPathComponent("\(path.x)")
+				url.appendPathComponent("\(path.y).png")
+				
+				if fileManager.fileExists(atPath: url.path) { // Wenn das Map-Tile existiert...
+					
+					return url
+				}
+				else {
+					
+					//logger.info("OSMTileOverlay: MapTiles have not been downloaded yet.")
+					return Bundle.main.url(forResource: "default", withExtension: "png")!
+				}
+			}
+			else {
+				
+				//logger.error("OSMTileOverlay: Could not find cache url.")
+				return Bundle.main.url(forResource: "default", withExtension: "png")!
+			}
+		}
+		else {
+			
+			return Bundle.main.url(forResource: "default", withExtension: "png")!
+		}
+	}
+}
diff --git a/Meshtastic/Views/Settings/AppSettings.swift b/Meshtastic/Views/Settings/AppSettings.swift
index c568da57..ee308564 100644
--- a/Meshtastic/Views/Settings/AppSettings.swift
+++ b/Meshtastic/Views/Settings/AppSettings.swift
@@ -120,6 +120,19 @@ struct AppSettings: View {
 						Label("Show Route Lines", systemImage: "road.lanes")
 					}
 					.toggleStyle(SwitchToggleStyle(tint: .accentColor))
+					
+					HStack {
+											
+						Label("Tile Server", systemImage: "square.grid.3x2")
+						TextField(
+							"Tile Server",
+							text: $userSettings.meshMapCustomTileServer,
+							axis: .vertical
+						)
+						.foregroundColor(.gray)
+					}
+					.keyboardType(.asciiCapable)
+					.disableAutocorrection(true)
 				}
 			}
 			HStack {