add heads config system

PadelClubData/Data/Tournament.swift

@@ -1547,6 +1547,9 @@ defer {
 
     public func deleteGroupStages() {
         self.tournamentStore?.groupStages.delete(contentOfs: allGroupStages())
+        if let gs = self.groupStageLoserBracket() {
+            self.tournamentStore?.rounds.delete(instance: gs)
+        }
     }
 
     public func refreshGroupStages(keepExistingMatches: Bool = false) {

PadelClubData/ViewModel/PadelRule.swift

@@ -1882,12 +1882,16 @@ public enum RoundRule {
     }
     
     public static func numberOfMatches(forRoundIndex roundIndex: Int) -> Int {
-        Int(pow(2.0, Double(roundIndex)))
+        (1 << roundIndex)
+    }
+    
+    public static func baseIndex(forRoundIndex roundIndex: Int) -> Int {
+        numberOfMatches(forRoundIndex: roundIndex) - 1
     }
     
     static func matchIndexWithinRound(fromMatchIndex matchIndex: Int) -> Int {
         let roundIndex = roundIndex(fromMatchIndex: matchIndex)
-        let matchIndexWithinRound = matchIndex - (Int(pow(2.0, Double(roundIndex))) - 1)
+        let matchIndexWithinRound = matchIndex - baseIndex(forRoundIndex: roundIndex)
         return matchIndexWithinRound
     }
     
@@ -1911,7 +1915,7 @@ public enum RoundRule {
             }
             return "Quart de finale"
         default:
-            return "\(Int(pow(2.0, Double(roundIndex))))ème"
+            return "\((1 << roundIndex))ème"
         }
     }
 }