Working Weather widget

DynamicIsland/managers/LockScreenWeatherManager.swift

@@ -0,0 +1,170 @@
+import Foundation
+import Defaults
+
+@MainActor
+final class LockScreenWeatherManager: ObservableObject {
+    static let shared = LockScreenWeatherManager()
+
+    @Published private(set) var snapshot: LockScreenWeatherSnapshot?
+
+    private let provider = LockScreenWeatherProvider()
+    private var lastFetchDate: Date?
+
+    private init() {}
+
+    func showWeatherWidget() {
+        guard Defaults[.enableLockScreenWeatherWidget] else {
+            LockScreenWeatherPanelManager.shared.hide()
+            return
+        }
+
+        Task { @MainActor [weak self] in
+            guard let self else { return }
+            await self.refresh(force: self.snapshot == nil)
+            if let snapshot = self.snapshot {
+                LockScreenWeatherPanelManager.shared.show(with: snapshot)
+            } else {
+                LockScreenWeatherPanelManager.shared.hide()
+            }
+        }
+    }
+
+    func hideWeatherWidget() {
+        LockScreenWeatherPanelManager.shared.hide()
+    }
+
+    func refresh(force: Bool = false) async {
+        let interval = Defaults[.lockScreenWeatherRefreshInterval]
+        if !force, let lastFetchDate, Date().timeIntervalSince(lastFetchDate) < interval {
+            if let snapshot = snapshot {
+                LockScreenWeatherPanelManager.shared.update(with: snapshot)
+            }
+            return
+        }
+
+        do {
+            let snapshot = try await provider.fetchSnapshot()
+            self.snapshot = snapshot
+            lastFetchDate = Date()
+            LockScreenWeatherPanelManager.shared.update(with: snapshot)
+        } catch {
+            NSLog("LockScreenWeatherManager: failed to fetch weather - \(error.localizedDescription)")
+        }
+    }
+}
+
+struct LockScreenWeatherSnapshot: Equatable {
+    let temperatureText: String
+    let symbolName: String
+    let description: String
+}
+
+private actor LockScreenWeatherProvider {
+    private let session: URLSession
+    private let decoder: JSONDecoder
+
+    init() {
+        let configuration = URLSessionConfiguration.ephemeral
+        configuration.timeoutIntervalForRequest = 10
+        configuration.timeoutIntervalForResource = 10
+        session = URLSession(configuration: configuration)
+        decoder = JSONDecoder()
+    }
+
+    func fetchSnapshot() async throws -> LockScreenWeatherSnapshot {
+        guard let url = URL(string: "https://wttr.in/?format=j1") else {
+            throw WeatherProviderError.invalidURL
+        }
+
+        let (data, response) = try await session.data(from: url)
+        guard let httpResponse = response as? HTTPURLResponse, (200..<300).contains(httpResponse.statusCode) else {
+            throw WeatherProviderError.invalidResponse
+        }
+
+        let payload = try decoder.decode(WTTRResponse.self, from: data)
+        guard let condition = payload.currentCondition.first else {
+            throw WeatherProviderError.noData
+        }
+
+        let usesMetric = Locale.current.usesMetricSystem
+        let temperature = usesMetric ? condition.tempC : condition.tempF
+        let temperatureText = "\(temperature)°"
+
+        let code = Int(condition.weatherCode) ?? 113
+        let symbol = WeatherSymbolMapper.symbol(for: code)
+        let description = condition.localizedDescription
+
+        return LockScreenWeatherSnapshot(
+            temperatureText: temperatureText,
+            symbolName: symbol,
+            description: description
+        )
+    }
+}
+
+enum WeatherProviderError: Error {
+    case invalidURL
+    case invalidResponse
+    case noData
+}
+
+private struct WTTRResponse: Decodable {
+    let current_condition: [WTTRCurrentCondition]
+
+    var currentCondition: [WTTRCurrentCondition] { current_condition }
+}
+
+private struct WTTRCurrentCondition: Decodable {
+    private enum CodingKeys: String, CodingKey {
+        case tempC = "temp_C"
+        case tempF = "temp_F"
+        case weatherCode
+        case weatherDesc
+        case langEn = "lang_en"
+    }
+
+    let tempC: String
+    let tempF: String
+    let weatherCode: String
+    let weatherDesc: [WTTRTextValue]?
+    let langEn: [WTTRTextValue]?
+
+    var localizedDescription: String {
+        if let english = langEn?.first?.value, !english.isEmpty {
+            return english
+        }
+        if let desc = weatherDesc?.first?.value, !desc.isEmpty {
+            return desc
+        }
+        return ""
+    }
+}
+
+private struct WTTRTextValue: Decodable {
+    let value: String
+}
+
+private enum WeatherSymbolMapper {
+    static func symbol(for code: Int) -> String {
+        switch code {
+        case 113:
+            return "sun.max.fill"
+        case 116:
+            return "cloud.sun.fill"
+        case 119, 122:
+            return "cloud.fill"
+        case 143, 248, 260:
+            return "cloud.fog.fill"
+        case 176, 263, 266, 293, 296, 299, 302, 353, 356, 359:
+            return "cloud.rain.fill"
+        case 179, 182, 185, 311, 314, 317, 320, 362, 365:
+            return "cloud.sleet.fill"
+        case 227, 230, 281, 284, 317, 320, 323, 326, 329, 332, 335, 338, 368, 371, 374, 377:
+            return "cloud.snow.fill"
+        case 200, 386, 389, 392, 395:
+            return "cloud.bolt.rain.fill"
+        default:
+            return "cloud.sun.fill"
+        }
+    }
+}