add GenericItemManager, fix small inconsistencies

WorkoutsPlus/Features/Exercise/Equipment.swift

@@ -9,16 +9,40 @@ import Foundation
 import SwiftData
 
 @Model
-final class Equipment: Nameable {
-		static var systemImage = "dumbbell.fill"
-		
+final class Equipment {
 		var id = UUID()
 		var creationDate: Date = Date.now
 		
-		@Attribute(.unique) var name: String
-		var exercises: [Exercise] = []
+		@Attribute(.unique)
+		var name: String
 		
-		init(name: String) {
+		init(name: String = "") {
 				self.name = name
 		}
 }
+
+// This protocol is required to display the name if the equipment in the List.
+extension Equipment: CustomStringConvertible {
+		var description: String {
+				name
+		}
+}
+
+extension Equipment: EditableModel {
+		static var editableProperties: [EditableProperty] {
+				[
+						EditableProperty(
+								displayName: "Name",
+								type: String.self,
+								get: { item in
+										guard let equipment = item as? Equipment else { return "" }
+										return equipment.name
+								},
+								set: { item, newValue in
+										guard let equipment = item as? Equipment else { return }
+										equipment.name = newValue
+								}
+						)
+				]
+		}
+}

WorkoutsPlus/Features/Exercise/ExerciseEditor.swift

@@ -51,6 +51,24 @@ struct ExerciseEditor: View {
 								}
 								.pickerStyle(NavigationLinkPickerStyle())
 						}
+						
+						
+						AssignmentButton<Exercise, Equipment>(
+								title: "Equipment",
+								owner: exercise,
+								sortBy: SortDescriptor(\Equipment.name),
+								getAssignedItems: { exercise in
+										exercise.equipment
+								},
+								assign: { exercise, equipment in
+										exercise.equipment.append(equipment)
+								},
+								unassign: { exercise, equipment in
+										exercise.equipment.removeAll(where: { $0.id == equipment.id })
+								},
+								createNew: { Equipment(name: "") }
+						)
+						
 						Section(footer: Text("Feature coming soon.")) {
 								Toggle(isOn: $isPartOfProgression) {
 										Text("Exercise is Part of a Progression")