Scaffold FuelBoard: petrol price widget + app (sample data, Maps deep-links, provider seam for Fuel Finder API)
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FuelBoard Contributor
@@ -0,0 +1,218 @@
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import SwiftUI
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import CoreLocation
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import WidgetKit
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struct Coordinate: Equatable {
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let lat: Double
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let lng: Double
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}
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struct ContentView: View {
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@Environment(\.scenePhase) private var scenePhase
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@State private var stations: [FuelStation] = []
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@State private var selectedFuel: FuelType = FuelStore.loadSelectedFuel()
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@State private var location: Coordinate? = {
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if let loc = FuelStore.loadLocation() { return Coordinate(lat: loc.lat, lng: loc.lng) }
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return nil
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}()
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@State private var isLoading = false
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@State private var statusMessage = ""
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@State private var locationManager = LocationManager()
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private var sortedStations: [FuelStation] {
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stations
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.filter { $0.prices[selectedFuel] != nil }
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.sorted { lhs, rhs in
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// Prefer distance when we have a location, otherwise price.
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guard let location else {
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return lhs.prices[selectedFuel]! < rhs.prices[selectedFuel]!
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}
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let lScore = lhs.distanceKM(to: location.lat, lng2: location.lng) * 0.4 +
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lhs.prices[selectedFuel]! * 0.001
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let rScore = rhs.distanceKM(to: location.lat, lng2: location.lng) * 0.4 +
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rhs.prices[selectedFuel]! * 0.001
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return lScore < rScore
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}
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}
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var body: some View {
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NavigationStack {
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List {
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Section {
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Text("Cheapest \(selectedFuel.displayName) near you. Tap a station for directions.")
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.font(.footnote)
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.foregroundStyle(.secondary)
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}
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Section("Fuel type") {
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Picker("Fuel type", selection: $selectedFuel) {
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ForEach(FuelType.allCases) { fuel in
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Text(fuel.displayName).tag(fuel)
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}
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}
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.pickerStyle(.segmented)
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.onChange(of: selectedFuel) { _, newValue in
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FuelStore.saveSelectedFuel(newValue)
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WidgetCenter.shared.reloadAllTimelines()
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}
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}
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Section("Stations") {
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if isLoading {
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HStack(spacing: 10) {
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ProgressView()
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Text("Fetching prices…")
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}
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} else if sortedStations.isEmpty {
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Text("No \(selectedFuel.displayName) stations found.")
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.foregroundStyle(.secondary)
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} else {
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ForEach(sortedStations) { station in
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StationRow(station: station, fuel: selectedFuel, location: location)
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}
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}
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}
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Section("Location") {
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if let location {
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Text("Using location \(String(format: "%.4f, %.4f", location.lat, location.lng))")
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.font(.caption)
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.foregroundStyle(.secondary)
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} else {
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Text("No location yet — allow location access to sort by distance.")
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.font(.caption)
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.foregroundStyle(.secondary)
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}
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Button("Update my location") {
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locationManager.requestUpdate()
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}
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.font(.footnote)
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}
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if !statusMessage.isEmpty {
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Section("Status") {
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Text(statusMessage)
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.font(.caption2)
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.monospaced()
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.textSelection(.enabled)
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}
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}
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}
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.navigationTitle("FuelBoard")
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.toolbar {
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ToolbarItem(placement: .topBarTrailing) {
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Button {
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Task { await refresh() }
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} label: {
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Image(systemName: "arrow.clockwise")
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}
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.disabled(isLoading)
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}
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}
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.onAppear {
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Task { await refresh() }
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}
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.onChange(of: scenePhase) { _, newPhase in
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if newPhase == .active {
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Task { await refresh() }
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}
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}
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.onChange(of: locationManager.current) { _, newLocation in
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if let newLocation {
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location = newLocation
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FuelStore.saveLocation(lat: newLocation.lat, lng: newLocation.lng)
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WidgetCenter.shared.reloadAllTimelines()
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Task { await refresh() }
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}
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}
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}
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}
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private func refresh() async {
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isLoading = true
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defer { isLoading = false }
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do {
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let fetched = try await FuelPriceProvider.active.fetchStations(near: location?.lat, lng: location?.lng, fuel: selectedFuel)
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stations = fetched
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FuelStore.saveStations(fetched)
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WidgetCenter.shared.reloadAllTimelines()
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statusMessage = "Loaded \(fetched.count) stations · \(Date().formatted(date: .omitted, time: .shortened))"
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} catch {
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statusMessage = "Live fetch failed: \(error.localizedDescription). Showing cached/sample data."
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stations = FuelStore.loadStations().isEmpty ? SampleFuelProvider.sampleStations : FuelStore.loadStations()
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}
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}
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}
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struct StationRow: View {
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let station: FuelStation
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let fuel: FuelType
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let location: Coordinate?
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var body: some View {
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HStack(spacing: 12) {
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VStack(alignment: .leading, spacing: 2) {
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Text(station.name)
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.font(.headline)
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Text("\(station.address), \(station.postcode)")
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.font(.caption)
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.foregroundStyle(.secondary)
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if let location {
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Text(String(format: "%.1f km away", station.distanceKM(to: location.lat, lng2: location.lng)))
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.font(.caption2)
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.foregroundStyle(.secondary)
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}
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}
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Spacer()
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if let price = station.prices[fuel] {
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Text(String(format: "%.1fp", price))
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.font(.title3.bold())
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.foregroundStyle(.green)
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}
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Image(systemName: "arrow.triangle.turn.up.right.circle")
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.foregroundStyle(.secondary)
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}
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.contentShape(Rectangle())
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.onTapGesture {
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if let url = station.mapsDirectionsURL {
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UIApplication.shared.open(url)
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}
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}
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}
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}
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// MARK: - Location manager
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@MainActor
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final class LocationManager: NSObject, ObservableObject, @preconcurrency CLLocationManagerDelegate {
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@Published var current: Coordinate?
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private let manager = CLLocationManager()
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override init() {
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super.init()
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manager.delegate = self
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manager.desiredAccuracy = kCLLocationAccuracyHundredMeters
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}
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func requestUpdate() {
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switch manager.authorizationStatus {
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case .notDetermined:
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manager.requestWhenInUseAuthorization()
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manager.requestLocation()
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case .authorizedWhenInUse, .authorizedAlways:
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manager.requestLocation()
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default:
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break
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}
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}
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func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
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guard let loc = locations.last else { return }
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current = Coordinate(lat: loc.coordinate.latitude, lng: loc.coordinate.longitude)
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}
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func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
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// Ignore — the app still works price-sorted without location.
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}
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}
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