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CustomizeFees.swift
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CustomizeFees.swift
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import ComposableArchitecture
import SwiftUI
// MARK: - CustomizeFees
struct CustomizeFees: FeatureReducer, Sendable {
struct State: Hashable, Sendable {
@CasePathable
enum CustomizationModeState: Hashable, Sendable {
case normal(NormalFeesCustomization.State)
case advanced(AdvancedFeesCustomization.State)
}
let manifestSummary: ManifestSummary
let signingPurpose: SigningPurpose
var reviewedTransaction: ReviewedTransaction
var modeState: CustomizationModeState
var feePayerAccount: Account? {
feePayer?.account
}
var feePayer: FeePayerCandidate? {
reviewedTransaction.feePayer.unwrap()?.wrappedValue
}
var transactionFee: TransactionFee {
reviewedTransaction.transactionFee
}
var feePayingValidation: FeePayerValidationOutcome? {
reviewedTransaction.feePayingValidation.wrappedValue
}
@PresentationState
var destination: Destination.State? = nil
init(
reviewedTransaction: ReviewedTransaction,
manifestSummary: ManifestSummary,
signingPurpose: SigningPurpose
) {
self.reviewedTransaction = reviewedTransaction
self.manifestSummary = manifestSummary
self.signingPurpose = signingPurpose
self.modeState = reviewedTransaction.transactionFee.customizationModeState
}
}
enum ViewAction: Equatable, Sendable {
case changeFeePayerTapped
case toggleMode
case closeButtonTapped
}
@CasePathable
enum ChildAction: Equatable, Sendable {
case normalFeesCustomization(NormalFeesCustomization.Action)
case advancedFeesCustomization(AdvancedFeesCustomization.Action)
}
enum DelegateAction: Equatable, Sendable {
case updated(ReviewedTransaction)
}
enum InternalAction: Equatable, Sendable {
case updated(TaskResult<ReviewedTransaction>)
}
struct Destination: DestinationReducer {
@CasePathable
enum State: Sendable, Hashable {
case selectFeePayer(SelectFeePayer.State)
}
@CasePathable
enum Action: Sendable, Equatable {
case selectFeePayer(SelectFeePayer.Action)
}
var body: some ReducerOf<Self> {
Scope(state: \.selectFeePayer, action: \.selectFeePayer) {
SelectFeePayer()
}
}
}
@Dependency(\.dismiss) var dismiss
@Dependency(\.errorQueue) var errorQueue
var body: some ReducerOf<Self> {
Scope(state: \.modeState, action: \.child) {
Scope(state: \.normal, action: \.normalFeesCustomization) {
NormalFeesCustomization()
}
Scope(state: \.advanced, action: \.advancedFeesCustomization) {
AdvancedFeesCustomization()
}
}
Reduce(core)
.ifLet(destinationPath, action: /Action.destination) {
Destination()
}
}
private let destinationPath: WritableKeyPath<State, PresentationState<Destination.State>> = \.$destination
func reduce(into state: inout State, viewAction: ViewAction) -> Effect<Action> {
switch viewAction {
case .changeFeePayerTapped:
state.destination = .selectFeePayer(
.init(
reviewedTransaction: state.reviewedTransaction,
selectedFeePayer: state.feePayer,
transactionFee: state.transactionFee
)
)
return .none
case .toggleMode:
state.reviewedTransaction.transactionFee.toggleMode()
state.modeState = state.reviewedTransaction.transactionFee.customizationModeState
return .send(.delegate(.updated(state.reviewedTransaction)))
case .closeButtonTapped:
return .run { _ in
await dismiss()
}
}
}
func reduce(into state: inout State, childAction: ChildAction) -> Effect<Action> {
switch childAction {
case let .advancedFeesCustomization(.delegate(.updated(advancedFees))):
state.reviewedTransaction.transactionFee.mode = .advanced(advancedFees)
return .send(.delegate(.updated(state.reviewedTransaction)))
default:
return .none
}
}
func reduce(into state: inout State, internalAction: InternalAction) -> Effect<Action> {
switch internalAction {
case let .updated(.success(reviewedTransaction)):
state.reviewedTransaction = reviewedTransaction
state.modeState = state.reviewedTransaction.transactionFee.customizationModeState
return .send(.delegate(.updated(state.reviewedTransaction)))
case let .updated(.failure(error)):
errorQueue.schedule(error)
return .none
}
}
func reduce(into state: inout State, presentedAction: Destination.Action) -> Effect<Action> {
switch presentedAction {
case let .selectFeePayer(.delegate(.selected(selection))):
let previousFeePayer = state.feePayer
state.destination = nil
let signingPurpose = state.signingPurpose
@Sendable
func replaceFeePayer(
_ feePayer: FeePayerCandidate,
_ reviewedTransaction: ReviewedTransaction,
manifestSummary: ManifestSummary
) -> Effect<Action> {
.run { send in
var reviewedTransaction = reviewedTransaction
var newSigners = OrderedSet(reviewedTransaction.transactionSigners.intentSignerEntitiesOrEmpty())
/// Remove the previous Fee Payer Signature if it is not required
if let previousFeePayer, !manifestSummary.addressesOfAccountsRequiringAuth.contains(where: { $0 == previousFeePayer.account.address }) {
// removed, need to recalculate signing factors
newSigners.remove(.account(previousFeePayer.account))
}
newSigners.append(.account(feePayer.account))
// Update transaction signers
reviewedTransaction.transactionSigners = .init(
notaryPublicKey: reviewedTransaction.transactionSigners.notaryPublicKey,
intentSigning: {
guard let nonEmpty = NonEmpty(rawValue: OrderedSet(newSigners)) else {
return .notaryIsSignatory
}
return TransactionSigners.IntentSigning.intentSigners(nonEmpty)
}()
)
@Dependency(\.factorSourcesClient) var factorSourcesClient
do {
guard let signers = NonEmpty(rawValue: Set(newSigners)) else {
assertionFailure("NewSigners can not be empty here, barring programmer errors")
struct InternalError: Error {}
throw InternalError()
}
let factors = try await factorSourcesClient.getSigningFactors(.init(
networkID: reviewedTransaction.networkID,
signers: signers,
signingPurpose: signingPurpose
))
reviewedTransaction.signingFactors = factors
reviewedTransaction.feePayer = .success(selection)
if previousFeePayer == nil, reviewedTransaction.transactionFee.totalFee.max == .zero {
/// The case when no FeePayer is required, but users chooses to add a FeePayer.
reviewedTransaction.transactionFee.addLockFeeCost()
reviewedTransaction.transactionFee.updateNotarizingCost(notaryIsSignatory: false)
}
reviewedTransaction.transactionFee.updateSignaturesCost(factors.expectedSignatureCount)
await send(.internal(.updated(.success(reviewedTransaction))))
} catch {
await send(.internal(.updated(.failure(error))))
}
}
}
if selection != previousFeePayer {
return replaceFeePayer(selection, state.reviewedTransaction, manifestSummary: state.manifestSummary)
} else {
return .none
}
default:
return .none
}
}
}
extension TransactionFee {
var customizationModeState: CustomizeFees.State.CustomizationModeState {
switch mode {
case let .normal(normal):
.normal(.init(fees: normal))
case let .advanced(advanced):
.advanced(.init(fees: advanced))
}
}
}