UserDefault+AppStorage extensions

Storage.swift

import Foundation

public struct AppStorageKeys {
	public var userOnboarding: AppStorageKey<Bool> { .init("user_onboarding", defaultValue: false) }
	public var updateFrequencyTimeInterval: AppStorageKey<Double> { .init("update_frequency_time_interval", defaultValue: 1.0) }
}

public struct AppStorageKey<Value> {
	let name: String
	let defaultValue: Value
	
	init(_ name: String, defaultValue: Value) {
		self.name = name
		self.defaultValue = defaultValue
	}
}

public extension UserDefaults {
	func `get`<Value>(_ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>) -> Value {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		let result = self.object(forKey: strongKey.name) as? Value
		return result ?? strongKey.defaultValue
	}
	
	func `set`<Value>(_ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, value: Value) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.set(value, forKey: strongKey.name)
	}
}

import SwiftUI

public extension AppStorage where Value == Bool {
	init(wrappedValue: Bool, strongKey: AppStorageKey<Value>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKey.name, store: store)
	}
	
	init(wrappedValue: Value, strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: wrappedValue, strongKey: strongKey, store: store)
	}
	
	init(wrappedValue: Value, _ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKeyPath: strongKeyPath, store: store)
	}
	
	init(_ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: strongKey.defaultValue, strongKey: strongKey, store: store)
	}
}

public extension AppStorage where Value == Int {
	init(wrappedValue: Int, strongKey: AppStorageKey<Value>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKey.name, store: store)
	}
	
	init(wrappedValue: Value, strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: wrappedValue, strongKey: strongKey, store: store)
	}
	
	init(wrappedValue: Value, _ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKeyPath: strongKeyPath, store: store)
	}
	
	init(_ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: strongKey.defaultValue, strongKey: strongKey, store: store)
	}
}

public extension AppStorage where Value == Double {
	init(wrappedValue: Double, strongKey: AppStorageKey<Value>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKey.name, store: store)
	}
	
	init(wrappedValue: Value, strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: wrappedValue, strongKey: strongKey, store: store)
	}
	
	init(wrappedValue: Value, _ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKeyPath: strongKeyPath, store: store)
	}
	
	init(_ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: strongKey.defaultValue, strongKey: strongKey, store: store)
	}
}

public extension AppStorage where Value == URL {
	init(wrappedValue: URL, strongKey: AppStorageKey<Value>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKey.name, store: store)
	}
	
	init(wrappedValue: Value, strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: wrappedValue, strongKey: strongKey, store: store)
	}
	
	init(wrappedValue: Value, _ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKeyPath: strongKeyPath, store: store)
	}
	
	init(_ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: strongKey.defaultValue, strongKey: strongKey, store: store)
	}
}

public extension AppStorage where Value == String {
	init(wrappedValue: String, strongKey: AppStorageKey<Value>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKey.name, store: store)
	}
	
	init(wrappedValue: Value, strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: wrappedValue, strongKey: strongKey, store: store)
	}
	
	init(wrappedValue: Value, _ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKeyPath: strongKeyPath, store: store)
	}
	
	init(_ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: strongKey.defaultValue, strongKey: strongKey, store: store)
	}
}

public extension AppStorage where Value == Data {
	init(wrappedValue: Data, strongKey: AppStorageKey<Value>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKey.name, store: store)
	}
	
	init(wrappedValue: Value, strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: wrappedValue, strongKey: strongKey, store: store)
	}
	
	init(wrappedValue: Value, _ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		self.init(wrappedValue: wrappedValue, strongKeyPath: strongKeyPath, store: store)
	}
	
	init(_ strongKeyPath: KeyPath<AppStorageKeys, AppStorageKey<Value>>, store: UserDefaults? = nil) {
		let strongKey = AppStorageKeys()[keyPath: strongKeyPath]
		self.init(wrappedValue: strongKey.defaultValue, strongKey: strongKey, store: store)
	}
}