72 lines
2.2 KiB
Swift
72 lines
2.2 KiB
Swift
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//
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// LndCallbacks.swift
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// PayUp
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//
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// Created by Jason van den Berg on 2020/08/03.
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// Copyright © 2020 Jason van den Berg. All rights reserved.
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//
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import Foundation
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import SwiftProtobuf
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extension Lightning {
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/// Generic callback for LND function which will map responses back into the protobuf message type.
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class LndCallback<T: SwiftProtobuf.Message>: NSObject, LndmobileCallbackProtocol, LndmobileRecvStreamProtocol {
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let completion: (T, Error?) -> Void
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init(_ completion: @escaping (T, Error?) -> Void) {
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let startedOnMainThread = Thread.current.isMainThread
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self.completion = { (response, error) in
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if startedOnMainThread {
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DispatchQueue.main.async { completion(response, error) }
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} else {
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completion(response, error)
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}
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}
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}
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func onResponse(_ p0: Data?) {
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guard let data = p0 else {
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completion(T(), nil) //For calls like balance checks, an empty response should just be `T` defaults
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return
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}
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do {
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completion(try T(serializedData: data), nil)
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} catch {
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completion(T(), LightningError.mapping)
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}
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}
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func onError(_ p0: Error?) {
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completion(T(), p0 ?? LightningError.unknown)
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}
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}
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/// For LND callbacks that don't pass back any messages but can return errors
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class LndEmptyResponseCallback: NSObject, LndmobileCallbackProtocol {
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let completion: (Error?) -> Void
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init(_ completion: @escaping (Error?) -> Void) {
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let startedOnMainThread = Thread.current.isMainThread
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self.completion = { error in
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if startedOnMainThread {
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DispatchQueue.main.async { completion(error) }
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} else {
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completion(error)
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}
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}
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}
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func onResponse(_ p0: Data?) {
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completion(nil)
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}
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func onError(_ p0: Error?) {
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completion(p0 ?? LightningError.unknown)
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}
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}
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}
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