Weatherkit

# WeatherKit Extended Patterns

Overflow reference for the `weatherkit` skill. Contains advanced patterns that exceed the main skill file's scope.

## Contents

- [WeatherKit SwiftUI Integration](#weatherkit-swiftui-integration)
- [Charts Integration](#charts-integration)
- [Historical Weather Statistics](#historical-weather-statistics)
- [Weather Condition Mapping](#weather-condition-mapping)
- [Caching Strategy](#caching-strategy)
- [Location-Based Weather](#location-based-weather)

## WeatherKit SwiftUI Integration

### Weather Manager with `@Observable`

```swift
import WeatherKit
import CoreLocation

@Observable
@MainActor
final class WeatherManager {
    private let service = WeatherService.shared

    var current: CurrentWeather?
    var hourlyForecast: Forecast<HourWeather>?
    var dailyForecast: Forecast<DayWeather>?
    var alerts: [WeatherAlert]?
    var attribution: WeatherAttribution?
    var isLoading = false
    var error: Error?

    func fetchWeather(for location: CLLocation) async {
        isLoading = true
        error = nil

        do {
            let (current, hourly, daily, alerts) = try await service.weather(
                for: location,
                including: .current, .hourly, .daily, .alerts
            )
            self.current = current
            self.hourlyForecast = hourly
            self.dailyForecast = daily
            self.alerts = alerts
            self.attribution = try await service.attribution
        } catch {
            self.error = error
        }

        isLoading = false
    }
}
```

### Weather Dashboard View

```swift
import SwiftUI
import WeatherKit

struct WeatherDashboardView: View {
    @Environment(WeatherManager.self) private var manager
    let location: CLLocation

    var body: some View {
        NavigationStack {
            ScrollView {
                VStack {
                    if manager.isLoading {
                        ProgressView("Loading weather...")
                    } else if let current = manager.current {
                        currentConditionsCard(current)
                    }

                    if let hourly = manager.hourlyForecast {
                        hourlyForecastSection(hourly)
                    }

                    if let daily = manager.dailyForecast {
                        dailyForecastSection(daily)
                    }

                    if let alerts = manager.alerts, !alerts.isEmpty {
                        alertsSection(alerts)
                    }

                    if let attribution = manager.attribution {
                        WeatherAttributionView(attribution: attribution)
                    }
                }
                .padding()
            }
            .navigationTitle("Weather")
            .task {
                await manager.fetchWeather(for: location)
            }
            .refreshable {
                await manager.fetchWeather(for: location)
            }
        }
    }

    private func currentConditionsCard(_ current: CurrentWeather) -> some View {
        VStack {
            Image(systemName: current.symbolName)
                .font(.system(size: 60))
                .symbolRenderingMode(.multicolor)

            Text(current.temperature.formatted())
                .font(.system(size: 48, weight: .thin))

            Text(current.condition.description)
                .font(.title3)
                .foregroundStyle(.secondary)

            HStack {
                Label(
                    "Humidity \(current.humidity.formatted(.percent))",
                    systemImage: "humidity"
                )
                Label(
                    "Wind \(current.wind.speed.formatted())",
                    systemImage: "wind"
                )
                Label(
                    "UV \(current.uvIndex.value)",
                    systemImage: "sun.max"
                )
            }
            .font(.caption)
        }
        .padding()
    }

    privat