86 lines
3.8 KiB
Swift
86 lines
3.8 KiB
Swift
import SwiftUI
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/// Favourites tab — starred stations, ranked cheapest-first for the selected
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/// fuel, with the cheapest favourite called out at the top.
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struct FavouritesView: View {
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let favourites: [FuelStation]
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let selectedFuel: FuelType
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let location: Coordinate?
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let favouriteIDs: Set<String>
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var onToggleFavourite: (FuelStation) -> Void = { _ in }
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/// Favourites that sell the selected fuel, cheapest first (distance tiebreak).
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private var ranked: [FuelStation] {
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let available = favourites.filter { $0.prices[selectedFuel] != nil }
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return available.sorted { lhs, rhs in
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let lPrice = lhs.prices[selectedFuel]!
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let rPrice = rhs.prices[selectedFuel]!
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if lPrice != rPrice { return lPrice < rPrice }
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guard let location else { return false }
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return lhs.distanceKM(to: location.lat, lng2: location.lng) <
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rhs.distanceKM(to: location.lat, lng2: location.lng)
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}
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}
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private var cheapest: FuelStation? { ranked.first }
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private var cheapestPrice: Double? { cheapest?.prices[selectedFuel] }
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var body: some View {
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NavigationStack {
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List {
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if favourites.isEmpty {
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Section {
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VStack(spacing: 10) {
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Image(systemName: "star")
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.font(.system(size: 40))
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.foregroundStyle(.secondary)
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Text("No favourites yet")
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.font(.headline)
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Text("Tap the star on any station in the Stations tab to pin it here, ranked by which is cheapest.")
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.font(.caption)
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.foregroundStyle(.secondary)
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.multilineTextAlignment(.center)
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}
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.frame(maxWidth: .infinity)
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.padding(.vertical, 24)
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}
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} else {
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Section {
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if let cheapest, let price = cheapestPrice {
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HStack(spacing: 10) {
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Image(systemName: "crown.fill")
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.foregroundStyle(.yellow)
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Text("Cheapest favourite: \(cheapest.name) — \(String(format: "%.1fp", price))")
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.font(.footnote)
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}
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}
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}
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Section("Favourites — cheapest first") {
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ForEach(Array(ranked.enumerated()), id: \.element.id) { index, station in
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StationRow(
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station: station,
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fuel: selectedFuel,
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location: location,
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cheapestPrice: cheapestPrice,
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isTopResult: index == 0,
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isFavourite: favouriteIDs.contains(station.id),
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onToggleFavourite: { onToggleFavourite(station) }
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)
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}
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}
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if let cheapest = cheapest {
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Section {
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Text("\(cheapest.name) is your cheapest favourite for \(selectedFuel.displayName). Add the same stations to the Alerts tab to get pinged when you drive past a cheaper one.")
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.font(.caption)
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.foregroundStyle(.secondary)
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}
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}
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}
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}
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.navigationTitle("Favourites")
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}
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}
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}
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