Generate labels from workout

CHDataManagement/Model/LocalizedPost.swift

@@ -77,6 +77,45 @@ final class LocalizedPost: ChangeObservingItem {
     var hasVideos: Bool {
         images.contains { $0.type.isVideo }
     }
+
+    func updateLabels(from workout: RouteOverview, locale: Locale) {
+        insertOrReplace(label: .init(icon: .statisticsDistance, value: String(format: "%.1f km", locale: locale, workout.distance / 1000)))
+        insertOrReplace(label: .init(icon: .statisticsTime, value: workout.duration.duration(locale: locale)))
+        insertOrReplace(label: .init(icon: .statisticsElevationUp, value: workout.ascendedElevation.length(roundingToNearest: 50)))
+        insertOrReplace(label: .init(icon: .statisticsEnergy, value: workout.energy.energy(roundingToNearest: 50)))
+    }
+
+    func insertOrReplace(label: ContentLabel) {
+        if let index = labels.firstIndex(where: { $0.icon == label.icon }) {
+            labels[index] = label
+        } else {
+            labels.append(label)
+        }
+    }
+}
+
+private extension TimeInterval {
+
+    func duration(locale: Locale) -> String {
+        let totalMinutes = Int((self / 60).rounded(to: 5))
+        let hours = totalMinutes / 60
+        let minutes = totalMinutes % 60
+
+        let suffix = locale.identifier.hasPrefix("de") ? "Std" : "h"
+
+        return String(format: "%d:%02d ", hours, minutes) + suffix
+    }
+
+    func length(roundingToNearest interval: Double) -> String {
+        let rounded = Int(self.rounded(to: interval))
+        return "\(rounded) m"
+    }
+
+    func energy(roundingToNearest interval: Double) -> String {
+        let rounded = Int(self.rounded(to: interval))
+        return "\(rounded) kcal"
+    }
+
 }
 
 // MARK: Storage