fix event sharing stuff

PadelClubData/Data/Event.swift

@@ -48,7 +48,7 @@ final public class Event: BaseEvent {
     // MARK: - Computed dependencies
     
     public var tournaments: [Tournament] {
-        DataStore.shared.tournaments.filter { $0.event == self.id && $0.isDeleted == false }
+        DataStore.shared.tournaments.filter { $0.event == self.id && $0.isDeleted == false }.sorted(by: \.startDate)
     }
     
     public func clubObject() -> Club? {
@@ -103,6 +103,55 @@ final public class Event: BaseEvent {
     public func shareURL() -> URL? {
         return URL(string: URLs.main.url.appending(path: "event/\(id)").absoluteString.removingPercentEncoding!)
     }
+    
+    public func formattedDateInterval() -> String {
+        let tournaments = self.tournaments
+        guard !tournaments.isEmpty else {
+            return "" // Handle empty tournament list
+        }
+
+        let firstTournament = tournaments.first!
+        let lastTournament = tournaments.last!
+
+        // Helper to check if two dates are on the same day
+        func isSameDay(date1: Date, date2: Date) -> Bool {
+            return Calendar.current.isDate(date1, inSameDayAs: date2)
+        }
+
+        // Scenario 1: Only one tournament
+        if tournaments.count == 1 {
+            return firstTournament.startDate.formattedAsDate()
+        }
+
+        // Scenario 2: Multiple tournaments, but all start and end on the same day (single-day event overall)
+        let overallEventIsSingleDay = isSameDay(date1: firstTournament.startDate, date2: lastTournament.startDate)
+
+        if overallEventIsSingleDay {
+            return firstTournament.startDate.formattedAsDate()
+        }
+
+        // Scenario 3: Multiple tournaments, spanning multiple days (requires "Du ... au ...")
+        let startDay = firstTournament.startDate.localizedDay()
+        let endDay = lastTournament.startDate.localizedDay()
+
+        let startMonthYear = firstTournament.startDate.monthYearFormatted
+        let endMonthYear = lastTournament.startDate.monthYearFormatted
+
+        let calendar = Calendar.current
+        let firstStartComponents = calendar.dateComponents([.year, .month], from: firstTournament.startDate)
+        let lastEndComponents = calendar.dateComponents([.year, .month], from: lastTournament.startDate)
+
+        if firstStartComponents.year == lastEndComponents.year && firstStartComponents.month == lastEndComponents.month {
+            // Same month and year: "Du 13 au 15 Juin 2025"
+            return "Du \(startDay) au \(endDay) \(startMonthYear)"
+        } else if firstStartComponents.year == lastEndComponents.year {
+            // Different months, same year: "Du 13 Juin au 15 Juillet 2025"
+            return "Du \(startDay) \(startMonthYear) au \(endDay) \(endMonthYear)"
+        } else {
+            // Different years: "Du 13 Juin 2025 au 15 Juin 2026"
+            return "Du \(startDay) \(startMonthYear) au \(endDay) \(endMonthYear)"
+        }
+    }
 
     func insertOnServer() throws {
         DataStore.shared.events.writeChangeAndInsertOnServer(instance: self)