filter view

all workout filter view is its own view
all workout filter view is the top of all workout view

iphone/Werkout_ios/APIModels/Workout.swift

@@ -61,3 +61,41 @@ struct Workout: Codable, Identifiable, Equatable {
         allSupersetExecercise = try container.decodeIfPresent([SupersetExercise].self, forKey: .allSupersetExecercise)
     }
 }
+
+extension Array where Element == Workout {
+    func filterWorkouts(searchString: String, filteredRegisterdUser: RegisteredUser?) -> [Workout] {
+        var matchingWorkouts = [Workout]()
+        
+        if (!searchString.isEmpty && searchString.count > 0) {
+            matchingWorkouts = self.filter({
+                if $0.name.lowercased().contains(searchString.lowercased()) {
+                    return true
+                }
+                
+                if let equipment = $0.equipment?.joined(separator: "").lowercased(),
+                   equipment.contains(searchString.lowercased()) {
+                    return true
+                }
+                
+                if let muscles = $0.muscles?.joined(separator: "").lowercased(),
+                   muscles.contains(searchString.lowercased()) {
+                    return true
+                }
+                
+                return false
+            })
+        }
+        
+        if matchingWorkouts.isEmpty {
+            matchingWorkouts.append(contentsOf: self)
+        }
+        
+        if let filteredRegisterdUser = filteredRegisterdUser {
+            matchingWorkouts = matchingWorkouts.filter({
+                $0.registeredUser == filteredRegisterdUser
+            })
+        }
+        
+        return matchingWorkouts
+    }
+}