add walletconnect support okexchain

Example/WalletConnect/WCSessionViewController.swift

@@ -34,8 +34,8 @@ class WCSessionViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
 
-        let string = "wc:fcfecccf-4930-46b9-9f42-5648579c1658@1?bridge=https%3A%2F%2Fbridge.walletconnect.org&key=4941e24abe9cce7822c17ebeadcd2f25a96b6e6904b9e4ec0942446ad5de8a18"
-
+//        let string = "wc:fcfecccf-4930-46b9-9f42-5648579c1658@1?bridge=https%3A%2F%2Fbridge.walletconnect.org&key=4941e24abe9cce7822c17ebeadcd2f25a96b6e6904b9e4ec0942446ad5de8a18"
+        let string = "wc:6087eb23-a8ac-4270-9f48-99cf86e56dd0@1?bridge=https%3A%2F%2Fbridge.walletconnect.org&key=228a5cfa700aa907a32c97568163d7a95d911fc56fe2ffcbe93b4199a2bcbc3a"
         defaultAddress = CoinType.ethereum.deriveAddress(privateKey: privateKey)
         uriField.text = string
         addressField.text = defaultAddress
@@ -127,6 +127,19 @@ class WCSessionViewController: UIViewController {
             }))
             self?.show(alert, sender: nil)
         }
+
+        interactor.okt.onTransaction = { [weak self] (id, event, transaction) in
+            let data = try! JSONEncoder().encode(transaction)
+            let message = String(data: data, encoding: .utf8)
+            let alert = UIAlertController(title: event.rawValue, message: message, preferredStyle: .alert)
+            alert.addAction(UIAlertAction(title: "Reject", style: .destructive, handler: { _ in
+                self?.interactor?.rejectRequest(id: id, message: "I don't have okt").cauterize()
+            }))
+            alert.addAction(UIAlertAction(title: "Approve", style: .default, handler: { (_) in
+                self?.interactor?.approveRequest(id: id, result: "This is the signed data").cauterize()
+            }))
+            self?.show(alert, sender: nil)
+        }
     }
 
     func approve(accounts: [String], chainId: Int) {

WalletConnect/Models/OKExChain/WCOKExChainTransaction.swift

@@ -0,0 +1,22 @@
+// Copyright © 2017-2019 Trust Wallet.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+import Foundation
+
+public struct WCOKExChainTransaction: Codable {
+    public let from: String?
+    public let to: String?
+    public let value: String?
+    public let gasLimit: String?
+    public let gasPrice: String?
+    public let accountNumber: String?
+    public let sequenceNumber: String?
+    public let symbol: String?
+    public let memo: String?
+    public let decimalNum: String?
+    public let contractAddress: String?
+    public let data: String?
+}

WalletConnect/Models/WCEvent.swift

@@ -21,13 +21,17 @@ public enum WCEvent: String {
     case bnbTransactionConfirm = "bnb_tx_confirmation"
     case trustSignTransacation = "trust_signTransaction"
     case getAccounts = "get_accounts"
+
+    case oktSignTransaction = "okt_signTransaction"
+    case oktSendTransaction = "okt_sendTransaction"
 }
 
 extension WCEvent {
 
     static let eth = Set<WCEvent>([.ethSign, .ethPersonalSign, .ethSignTypeData, .ethSignTransaction, .ethSendTransaction])
     static let bnb = Set<WCEvent>([.bnbSign, .bnbTransactionConfirm])
     static let trust = Set<WCEvent>([.trustSignTransacation, .getAccounts])
+    static let okt = Set<WCEvent>([.oktSignTransaction, .oktSendTransaction])
 
     func decode<T: Codable>(_ data: Data) throws -> JSONRPCRequest<T> {
         return try JSONDecoder().decode(JSONRPCRequest<T>.self, from: data)

WalletConnect/SubInteractor/WCOKExChainInteractor.swift

@@ -0,0 +1,24 @@
+// Copyright © 2017-2019 Trust Wallet.
+//
+// This file is part of Trust. The full Trust copyright notice, including
+// terms governing use, modification, and redistribution, is contained in the
+// file LICENSE at the root of the source code distribution tree.
+
+import Foundation
+
+public typealias OktTransactionClosure = (_ id: Int64, _ event: WCEvent, _ transaction: WCOKExChainTransaction) -> Void
+
+public struct WCOKExChainInteractor {
+    public var onTransaction: OktTransactionClosure?
+
+    func handleEvent(_ event: WCEvent, topic: String, decrypted: Data) throws {
+        switch event {
+        case .oktSignTransaction, .oktSendTransaction:
+            let request: JSONRPCRequest<[WCOKExChainTransaction]> = try event.decode(decrypted)
+            guard !request.params.isEmpty else { throw WCError.badJSONRPCRequest }
+            onTransaction?(request.id, event, request.params[0])
+        default:
+            break
+        }
+    }
+}

WalletConnect/WCInteractor.swift

@@ -31,6 +31,7 @@ open class WCInteractor {
     public var eth: WCEthereumInteractor
     public var bnb: WCBinanceInteractor
     public var trust: WCTrustInteractor
+    public var okt: WCOKExChainInteractor
 
     // incoming event handlers
     public var onSessionRequest: SessionRequestClosure?
@@ -64,6 +65,7 @@ open class WCInteractor {
         self.eth = WCEthereumInteractor()
         self.bnb = WCBinanceInteractor()
         self.trust = WCTrustInteractor()
+        self.okt = WCOKExChainInteractor()
 
         socket.onConnect = { [weak self] in self?.onConnect() }
         socket.onDisconnect = { [weak self] error in self?.onDisconnect(error: error) }
@@ -211,6 +213,8 @@ extension WCInteractor {
                 try bnb.handleEvent(event, topic: topic, decrypted: decrypted)
             } else if WCEvent.trust.contains(event) {
                 try trust.handleEvent(event, topic: topic, decrypted: decrypted)
+            }else if WCEvent.okt.contains(event) {
+                try okt.handleEvent(event, topic: topic, decrypted: decrypted)
             }
         }
     }