Files
fuelboard/FuelBoard/StationsView.swift
T

288 lines
13 KiB
Swift

import SwiftUI
import WidgetKit
/// Stations tab — the main list with fuel picker, distance filter, sort, pagination.
struct StationsView: View {
let stations: [FuelStation]
let totalCount: Int
let isLoading: Bool
@Binding var selectedFuel: FuelType
@Binding var sortMode: SortMode
@Binding var stationLimit: Int
let distanceUnit: DistanceUnit
let priceDisplayStyle: PriceDisplayStyle
let baselinePrice: Double?
let topStationID: String?
let location: Coordinate?
let favouriteIDs: Set<String>
var onToggleFavourite: (FuelStation, FuelType) -> Void = { _, _ in }
var onRefresh: () async -> Void = {}
/// Pagination: one page = 10 rows, reset whenever the underlying list
/// changes (new fetch, fuel/sort/radius switch). RAG/TOP/deltas still come
/// from the whole radius pool via `cheapestPrice` — paging never changes
/// which station is "best".
@State private var pageSize = 10
@State private var visibleCount = 10
/// Price-rating legend (the "Key") lives in a sheet, opened from the
/// info button in the header — keeps the list focused on stations.
@State private var showKey = false
var body: some View {
NavigationStack {
List {
Section {
if let location {
if sortMode == .closest {
Text("Closest \(selectedFuel.displayName) stations — nearest first, best value within \(distanceUnit.displayMiles(stationLimit)) \(distanceUnit.label(for: Double(distanceUnit.displayMiles(stationLimit)))) · \(totalCount) stations")
.font(.footnote)
.foregroundStyle(.secondary)
} else {
Text("Cheapest \(selectedFuel.displayName) within \(distanceUnit.displayMiles(stationLimit)) \(distanceUnit.label(for: Double(distanceUnit.displayMiles(stationLimit))))\(totalCount) stations · tap a station for directions.")
.font(.footnote)
.foregroundStyle(.secondary)
}
} else {
Text("\(sortMode == .closest ? "Closest" : "Cheapest") \(selectedFuel.displayName) — tap a station for directions.")
.font(.footnote)
.foregroundStyle(.secondary)
}
}
Section("Fuel type") {
FuelTypeSegmentedPicker(selection: $selectedFuel) { newValue in
FuelStore.saveSelectedFuel(newValue)
WidgetCenter.shared.reloadAllTimelines()
}
}
Section("Distance") {
Picker("Distance", selection: $stationLimit) {
ForEach(FuelStore.stationRadiusOptions, id: \.self) { miles in
let shown = distanceUnit.displayMiles(miles)
Text("\(shown) \(distanceUnit.label(for: Double(shown)))").tag(miles)
}
}
.pickerStyle(.segmented)
// In Closest mode the whole country is the pool — the
// radius is meaningless ("nearest" must never return an
// empty state), so the picker is disabled but its value is
// kept for when the user switches back to Cheapest.
.disabled(sortMode == .closest)
.opacity(sortMode == .closest ? 0.5 : 1)
.onChange(of: stationLimit) { _, newValue in
FuelStore.saveStationLimit(newValue)
}
.padding(.vertical, 2)
}
Section("Stations") {
Picker("Sort by", selection: $sortMode) {
ForEach(SortMode.allCases) { mode in
Text(mode.displayName).tag(mode)
}
}
.pickerStyle(.segmented)
.onChange(of: sortMode) { _, newValue in
FuelStore.saveSortMode(newValue)
}
.padding(.vertical, 2)
if isLoading {
HStack(spacing: 10) {
ProgressView()
Text("Fetching prices…")
}
} else if stations.isEmpty {
Text("No \(selectedFuel.displayName) stations found.")
.foregroundStyle(.secondary)
} else {
ForEach(Array(stations.prefix(visibleCount)), id: \.id) { station in
StationRow(
station: station,
fuel: selectedFuel,
location: location,
distanceUnit: distanceUnit,
priceDisplayStyle: priceDisplayStyle,
baselinePrice: baselinePrice,
isTopResult: station.id == topStationID,
isFavourite: favouriteIDs.contains(station.id),
onToggleFavourite: { onToggleFavourite(station, selectedFuel) }
)
}
if visibleCount < stations.count {
Button {
visibleCount += pageSize
} label: {
HStack {
Spacer()
Text("Show \(min(pageSize, stations.count - visibleCount)) more (\(stations.count - visibleCount) remaining)")
Spacer()
}
}
} else {
Text("All \(stations.count) stations shown")
.font(.caption2)
.foregroundStyle(.secondary)
.frame(maxWidth: .infinity)
}
}
}
}
.refreshable {
// Manual override for the twice-a-day cache policy.
await onRefresh()
}
.onChange(of: stations) { _, _ in
// New fetch or filter switch → back to the first page.
visibleCount = pageSize
}
// Native large-title behaviour (Mail-style): the system shows the
// large title at rest, scrolls it away and fades the compact
// inline title in. No custom toolbar needed — the native mechanism
// only renders text, which is exactly what we want here.
.navigationTitle("FuelBoard")
.navigationBarTitleDisplayMode(.large)
.onAppear {
// QA hook: launch with `-showKeySheet` to verify the legend
// sheet without driving a tap (simctl has no tap command).
if ProcessInfo.processInfo.arguments.contains("-showKeySheet") {
showKey = true
}
}
.toolbar {
ToolbarItem(placement: .topBarTrailing) {
Button {
showKey = true
} label: {
Image(systemName: "info.circle")
}
.accessibilityLabel("Key")
}
}
.sheet(isPresented: $showKey) {
NavigationStack {
List {
Section("Key") {
HStack(spacing: 8) {
Circle().fill(.green).frame(width: 12, height: 12)
Text("Best value — within 1.5p of the cheapest")
.font(.caption)
}
HStack(spacing: 8) {
Circle().fill(.orange).frame(width: 12, height: 12)
Text("Okay — within 4p of the cheapest")
.font(.caption)
}
HStack(spacing: 8) {
Circle().fill(.red).frame(width: 12, height: 12)
Text("Pricey — more than 4p over the cheapest")
.font(.caption)
}
HStack(spacing: 8) {
Text("TOP")
.font(.caption2.bold())
.padding(.horizontal, 5)
.padding(.vertical, 1)
.background(Capsule().fill(.blue.opacity(0.15)))
.foregroundStyle(.blue)
Text("Top result for the current sort")
.font(.caption)
}
HStack(spacing: 8) {
Image(systemName: "star.fill")
.font(.caption2)
.foregroundStyle(.yellow)
Text("Star a station to add it to Favourites")
.font(.caption)
}
}
}
.navigationTitle("Key")
.navigationBarTitleDisplayMode(.inline)
.toolbar {
ToolbarItem(placement: .confirmationAction) {
Button("Done") { showKey = false }
}
}
}
.presentationDetents([.medium])
}
}
}
}
// MARK: - Fuel-type iconography (app target only — FuelStore.swift is Foundation-only)
extension FuelType {
/// Short segment label ("Unleaded" / "Premium" / "Diesel") for
/// the picker and description.
var shortName: String {
switch self {
case .e10: return "Unleaded"
case .e5: return "Premium"
case .diesel: return "Diesel"
}
}
/// Fuel colour wheel (user-chosen palette): green = unleaded (#30D158),
/// yellow = premium (#FFD60A), cyan = diesel (#64D2FF). Used for the
/// fuel-type tab icons and the title icon.
var tintColor: Color {
switch self {
case .e10: return Color(red: 48/255.0, green: 209/255.0, blue: 88/255.0) // #30D158
case .e5: return Color(red: 255/255.0, green: 214/255.0, blue: 10/255.0) // #FFD60A
case .diesel: return Color(red: 100/255.0, green: 210/255.0, blue: 255/255.0) // #64D2FF
}
}
}
/// Fuel-type selector styled like a segmented control, with a coloured pump
/// icon per fuel (green = unleaded, yellow = premium, cyan = diesel). Built
/// custom because the native `.segmented` picker tints every segment the same
/// accent colour — it can't show per-fuel pump colours. Shared by the Stations
/// and Favourites tabs.
struct FuelTypeSegmentedPicker: View {
@Binding var selection: FuelType
/// Which fuels to show. Defaults to all; the Favourites tab passes only
/// the fuels that actually have favourites.
var fuels: [FuelType] = FuelType.allCases
var onSelect: (FuelType) -> Void = { _ in }
var body: some View {
HStack(spacing: 3) {
ForEach(fuels) { fuel in
let isSelected = fuel == selection
Button {
selection = fuel
onSelect(fuel)
} label: {
HStack(spacing: 5) {
Image(systemName: "fuelpump.fill")
.font(.caption2)
.foregroundStyle(fuel.tintColor)
Text(fuel.shortName)
.font(.subheadline.weight(isSelected ? .semibold : .regular))
}
.foregroundStyle(isSelected ? Color.primary : Color.secondary)
.frame(maxWidth: .infinity)
.padding(.vertical, 7)
.background {
if isSelected {
Capsule()
.fill(Color(UIColor.systemBackground))
.shadow(color: .black.opacity(0.08), radius: 1, y: 0.5)
}
}
}
.buttonStyle(.plain)
}
}
.padding(3)
.background(Capsule().fill(Color(.secondarySystemBackground)))
}
}