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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
import Foundation
@testable import Redux
@MainActor
class FakeReduxMiddleware {
var generateInitialCountValue: (() -> Int)?
lazy var fakeProvider: Middleware<FakeReduxState> = (legacyFakeProvider, modernFakeProvider)
lazy var modernFakeProvider: MiddlewareClosure<FakeReduxState> = { [self] state, action, windowUUID in
// Handles one type of action
guard let action = action as? FakeReduxModernAction else { return }
switch action {
case .requestInitialValue:
let initialValue = self.generateInitialCountValue?() ?? 0
store.dispatch(
FakeReduxModernAction.initialValueLoaded(initialValue: initialValue),
forWindowUUID: windowUUID
)
case .increaseCounter:
let existingValue = state.counter
let newValue = self.increaseCounter(currentValue: existingValue)
store.dispatch(
FakeReduxModernAction.counterIncreased(counterValue: newValue),
forWindowUUID: windowUUID
)
case .decreaseCounter:
let existingValue = state.counter
let newValue = self.decreaseCounter(currentValue: existingValue)
store.dispatch(
FakeReduxModernAction.counterDecreased(counterValue: newValue),
forWindowUUID: windowUUID
)
default:
break
}
}
lazy var legacyFakeProvider: LegacyMiddlewareClosure<FakeReduxState> = { [self] state, action in
// Handles one type of action
guard let actionType = action.actionType as? FakeReduxActionType else { return }
switch actionType {
case .requestInitialValue:
let initialValue = self.generateInitialCountValue?() ?? 0
let action = FakeReduxAction(counterValue: initialValue,
windowUUID: windowUUID,
actionType: FakeReduxActionType.initialValueLoaded)
store.dispatch(action)
case .increaseCounter:
let existingValue = state.counter
let newValue = self.increaseCounter(currentValue: existingValue)
let action = FakeReduxAction(counterValue: newValue,
windowUUID: windowUUID,
actionType: FakeReduxActionType.counterIncreased)
store.dispatch(action)
case .decreaseCounter:
let existingValue = state.counter
let newValue = self.decreaseCounter(currentValue: existingValue)
let action = FakeReduxAction(counterValue: newValue,
windowUUID: windowUUID,
actionType: FakeReduxActionType.counterDecreased)
store.dispatch(action)
default:
break
}
}
private func increaseCounter(currentValue: Int) -> Int {
return currentValue + 1
}
private func decreaseCounter(currentValue: Int) -> Int {
return currentValue - 1
}
}