77 lines
1.9 KiB
Swift
77 lines
1.9 KiB
Swift
//
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// DIContainer.swift
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// LuminateDI
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//
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// Created by Brendan Szymanski on 6/14/26.
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//
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import Adwaita
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import Foundation
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public final class DIContainer: @unchecked Sendable {
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public static let shared = DIContainer()
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public private(set) var values = InjectionValues()
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private var observers: [AnyKeyPath: [UUID: @Sendable () -> Void]] = [:]
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private let lock = NSLock()
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private init() {}
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public func register<T>(
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_ keyPath: WritableKeyPath<InjectionValues, T?>,
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value: T
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) {
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lock.withLock {
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values[keyPath: keyPath] = value
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}
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notifyObservers(for: keyPath)
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}
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public func resolve<T>(
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_ keyPath: KeyPath<InjectionValues, T?>
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) -> T {
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lock.withLock {
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guard let value = values[keyPath: keyPath] else {
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fatalError(
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"DIContainer: No value registered for \(keyPath). "
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+ "Call DIContainer.shared.register(\\.key, value:) during app startup."
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)
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}
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return value
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}
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}
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@discardableResult
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func addObserver<T>(
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for keyPath: KeyPath<InjectionValues, T?>,
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handler: @escaping @Sendable () -> Void
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) -> UUID {
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let id = UUID()
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lock.withLock {
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observers[keyPath, default: [:]][id] = handler
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}
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return id
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}
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func removeObserver(_ id: UUID) {
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lock.withLock {
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for keyPath in observers.keys {
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observers[keyPath]?.removeValue(forKey: id)
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}
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}
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}
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private func notifyObservers(for keyPath: AnyKeyPath) {
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let handlers: [@Sendable () -> Void] = lock.withLock {
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Array((observers[keyPath] ?? [:]).values)
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}
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handlers.forEach { $0() }
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}
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public func reset() {
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lock.withLock {
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values = InjectionValues()
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observers.removeAll()
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}
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}
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}
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