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/**
* TrackerMap
* Copyright (C) 2021-2022 Iván Ávalos <avalos@disroot.org>, Henoch Ojeda <imhenoch@protonmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import Foundation
import shared
// Source: https://www.kiloloco.com/articles/004-dependency-injection-via-property-wrappers/
// Source: https://medium.com/swlh/c1f02f06cd51
class Resolver {
private var storage = [String: (Resolver) -> Injectable]()
static let shared = Resolver()
private init() {}
func add(_ type: Injectable.Type, factory: @escaping (Resolver) -> Injectable) {
let key = String(reflecting: type.self)
storage[key] = factory
}
func resolve<T: Injectable>() -> T {
let key = String(reflecting: T.self)
guard let injectable = storage[key]?(self) as? T else {
fatalError("\(key) has not been added as an injectable object.")
}
return injectable
}
}
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