Tabs (Stations/Favourites/Alerts): favourites with cheapest-first ranking, proximity geofence alerts (favourites priority, 3km default radius, 1h dedup), Always location + background mode

2026-08-11 15:17:26 +01:00
parent 54403ed4b3
commit 60d25164d6
7 changed files with 591 additions and 136 deletions
@@ -0,0 +1,61 @@
+import SwiftUI
+
+/// Alerts tab — enables the cheapest-station proximity alerts and shows what's
+/// being monitored.
+struct AlertsView: View {
+    @Binding var enabled: Bool
+    @Binding var radius: Double
+    let monitoredCount: Int
+    let lastAlert: String?
+
+    var body: some View {
+        NavigationStack {
+            List {
+                Section {
+                    Toggle("Cheapest-station alerts", isOn: $enabled)
+                } footer: {
+                    Text("When you approach a station that is the cheapest within the radius, FuelBoard sends a notification — even with the app closed.")
+                }
+
+                if enabled {
+                    Section("Trigger radius") {
+                        VStack(alignment: .leading, spacing: 8) {
+                            HStack {
+                                Text("Radius")
+                                Spacer()
+                                Text("\(Int(radius)) km")
+                                    .foregroundStyle(.secondary)
+                                    .monospacedDigit()
+                            }
+                            Slider(value: $radius, in: 1...10, step: 1)
+                        }
+                    }
+
+                    Section("Monitoring") {
+                        if monitoredCount == 0 {
+                            Text("No stations monitored yet — open the Stations tab to load prices first.")
+                                .font(.caption)
+                                .foregroundStyle(.secondary)
+                        } else {
+                            LabeledContent("Geofenced stations", value: "\(monitoredCount)")
+                            Text("Your favourites get priority, then the closest stations fill the rest (18 max, iOS region limit).")
+                                .font(.caption)
+                                .foregroundStyle(.secondary)
+                            Text("Alerts are checked against the cheapest station within \(Int(radius)) km for the selected fuel. Each station alerts at most once per hour.")
+                                .font(.caption)
+                                .foregroundStyle(.secondary)
+                        }
+                    }
+
+                    if let lastAlert {
+                        Section("Last alert") {
+                            Label(lastAlert, systemImage: "bell.badge.fill")
+                                .font(.footnote)
+                        }
+                    }
+                }
+            }
+            .navigationTitle("Alerts")
+        }
+    }
+}