2 files changed, 153 insertions, 0 deletions
diff --git a/Shared/DomainDigDeepLink.swift b/Shared/DomainDigDeepLink.swift
new file mode 100644
index 0000000..ba1d64b
--- /dev/null
+++ b/Shared/DomainDigDeepLink.swift
@@ -0,0 +1,71 @@
+import Foundation
+
+/// Shared builder/parser for the `domaindig://` URL scheme, used by the intents
+/// and app (to open/route) and by the widget (to deep-link into a domain).
+///
+/// Lives in `Shared/` so it compiles into both the app and the widget target.
+/// It relies only on Foundation and no actor isolation, so it is safe in the
+/// widget extension (`APPLICATION_EXTENSION_API_ONLY`).
+enum DomainDigDeepLink {
+    static let scheme = "domaindig"
+
+    enum Action: Equatable {
+        case inspect(String)
+        case watch(String)
+        case detail(String)
+        case sweep
+
+        var host: String {
+            switch self {
+            case .inspect: return "inspect"
+            case .watch: return "watch"
+            case .detail: return "domain"
+            case .sweep: return "sweep"
+            }
+        }
+
+        /// The domain the action targets, if any. `.sweep` has no domain.
+        var domain: String? {
+            switch self {
+            case let .inspect(domain), let .watch(domain), let .detail(domain):
+                return domain
+            case .sweep:
+                return nil
+            }
+        }
+    }
+
+    static func url(for action: Action) -> URL {
+        var components = URLComponents()
+        components.scheme = scheme
+        components.host = action.host
+        if let domain = action.domain {
+            components.queryItems = [URLQueryItem(name: "domain", value: domain)]
+        }
+        // The scheme and host are fixed and any domain is percent-encoded by
+        // URLComponents, so this is always a valid URL.
+        return components.url!
+    }
+
+    static func action(from url: URL) -> Action? {
+        guard url.scheme == scheme else { return nil }
+
+        if url.host() == "sweep" {
+            return .sweep
+        }
+
+        let domain = URLComponents(url: url, resolvingAgainstBaseURL: false)?
+            .queryItems?
+            .first { $0.name == "domain" }?
+            .value?
+            .trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        guard !domain.isEmpty else { return nil }
+
+        switch url.host() {
+        case "inspect": return .inspect(domain)
+        case "watch": return .watch(domain)
+        case "domain": return .detail(domain)
+        default: return nil
+        }
+    }
+}
diff --git a/Shared/DomainDigWidgetData.swift b/Shared/DomainDigWidgetData.swift
new file mode 100644
index 0000000..5ceae48
--- /dev/null
+++ b/Shared/DomainDigWidgetData.swift
@@ -0,0 +1,82 @@
+import Foundation
+
+/// App Group + snapshot shared between the app (writer) and the widget (reader).
+///
+/// Deliberately self-contained: it references no app-target types (TrackedDomain,
+/// PortfolioSnapshot, DomainHealth, …) so it compiles unchanged into the widget
+/// extension. The app maps its richer types into these DTOs.
+enum DomainDigWidgetStore {
+    static let appGroupID = "group.net.cleberg.DomainDig"
+    private static let key = "widgetData"
+
+    private static var defaults: UserDefaults? {
+        UserDefaults(suiteName: appGroupID)
+    }
+
+    static func write(_ data: DomainDigWidgetData) {
+        guard let defaults, let encoded = try? JSONEncoder().encode(data) else { return }
+        defaults.set(encoded, forKey: key)
+    }
+
+    static func read() -> DomainDigWidgetData? {
+        guard let defaults,
+              let encoded = defaults.data(forKey: key),
+              let data = try? JSONDecoder().decode(DomainDigWidgetData.self, from: encoded)
+        else { return nil }
+        return data
+    }
+}
+
+struct DomainDigWidgetData: Codable, Sendable {
+    var generatedAt: Date
+    var totalDomains: Int
+    var healthyCount: Int
+    var warningCount: Int
+    var criticalCount: Int
+    var expiringSoonCount: Int
+    var unreachableCount: Int
+    var domains: [DomainDigWidgetDomain]
+
+    static let placeholder = DomainDigWidgetData(
+        generatedAt: .distantPast,
+        totalDomains: 3,
+        healthyCount: 2,
+        warningCount: 1,
+        criticalCount: 0,
+        expiringSoonCount: 1,
+        unreachableCount: 0,
+        domains: [
+            DomainDigWidgetDomain(domain: "example.com", isPinned: true, status: .healthy, certDaysRemaining: 240, lastChange: nil),
+            DomainDigWidgetDomain(domain: "cleberg.net", isPinned: false, status: .warning, certDaysRemaining: 21, lastChange: nil),
+            DomainDigWidgetDomain(domain: "example.org", isPinned: false, status: .healthy, certDaysRemaining: 88, lastChange: nil)
+        ]
+    )
+
+    /// Empty state used before the app has written any data.
+    static let empty = DomainDigWidgetData(
+        generatedAt: .distantPast,
+        totalDomains: 0,
+        healthyCount: 0,
+        warningCount: 0,
+        criticalCount: 0,
+        expiringSoonCount: 0,
+        unreachableCount: 0,
+        domains: []
+    )
+}
+
+struct DomainDigWidgetDomain: Codable, Sendable, Identifiable {
+    var domain: String
+    var isPinned: Bool
+    var status: DomainDigWidgetStatus
+    var certDaysRemaining: Int?
+    var lastChange: Date?
+
+    var id: String { domain }
+}
+
+enum DomainDigWidgetStatus: String, Codable, Sendable {
+    case healthy
+    case warning
+    case critical
+}