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66 changes: 39 additions & 27 deletions APIClient/Default/Plugins/Restoration/RestorationTokenPlugin.swift
Original file line number Diff line number Diff line change
Expand Up @@ -25,7 +25,7 @@ public class RestorationTokenPlugin: PluginType {
private var inProgress = false
private let credentialProvider: AccessCredentialsProvider
private let authErrorResolving: AuthErrorResolving

private var queue: [(Bool) -> Void] = []
/// - Parameters:
/// - credentialProvider: an access credentials provider that provides all required data to restore token; captured
/// - shouldHaltRequestsTillResolve: indicates whether APIClient should halt all passing requests in case one of them failed with `unathorized` error and restart them
Expand All @@ -44,43 +44,55 @@ public class RestorationTokenPlugin: PluginType {
}

public func canResolve(_ error: Error) -> Bool {
if authErrorResolving(error), inProgress == false {
if authErrorResolving(error) {
delegate?.reachUnauthorizedError()
return true
}
return false
return inProgress
}

public func resolve(_ error: Error, onResolved: @escaping (Bool) -> Void) {
guard authErrorResolving(error) else {
delegate?.failedToRestore()
onResolved(false)
return
}

guard credentialProvider.exchangeToken != nil && restorationResultProvider != nil else {
credentialProvider.invalidate()
delegate?.failedToRestore()
onResolved(false)
return
}

inProgress = true
restorationResultProvider? { [weak self] result in
self?.inProgress = false
if inProgress {
queue.append(onResolved)
} else {
guard authErrorResolving(error) else {
delegate?.failedToRestore()
onResolved(false)
queue.forEach { $0(false) }
queue.removeAll()
return
}

guard let value = result.value else {
self?.credentialProvider.invalidate()
self?.delegate?.failedToRestore()
guard credentialProvider.exchangeToken != nil && restorationResultProvider != nil else {
credentialProvider.invalidate()
delegate?.failedToRestore()
onResolved(false)
queue.forEach { $0(false) }
queue.removeAll()
return
}

inProgress = true
restorationResultProvider? { [weak self] result in
self?.inProgress = false

guard let value = result.value else {
self?.credentialProvider.invalidate()
self?.delegate?.failedToRestore()
onResolved(false)
self?.queue.forEach { $0(false) }
self?.queue.removeAll()
return
}

self?.credentialProvider.commitCredentialsUpdate { provider in
provider.accessToken = value.accessToken
provider.exchangeToken = value.exchangeToken
self?.delegate?.restored()
onResolved(true)
self?.credentialProvider.commitCredentialsUpdate { provider in
provider.accessToken = value.accessToken
provider.exchangeToken = value.exchangeToken
self?.delegate?.restored()
onResolved(true)
self?.queue.forEach { $0(true) }
self?.queue.removeAll()
}
}
}
}
Expand Down