Updated wallet creat and Private key get helper method

Author: Ravi Ranjan

HelperMethodsForApp/CreateWalletWrapper.swift

@@ -0,0 +1,58 @@
+//
+//  CreateWalletWrapper.swift
+//   Wallet
+//
+//  Created by Ravi Ranjan on 22/08/21.
+//  Copyright © 2021 [email protected]. All rights reserved.
+//
+
+import Foundation
+import Foundation
+import web3swift
+class CreateWalletWrapper: NSObject {
+    /*
+     Create wallet method
+     */
+    var prefixPath: String
+    init(prefixPath:String) {
+        self.prefixPath = prefixPath
+    }
+    
+    public  func createWallet() throws {
+        
+        var web3KeyStore: BIP32Keystore?
+        let userDir = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
+        let web3KeystoreManager = KeystoreManager.managerForPath(userDir + "/keystore")
+        do {
+            if (web3KeystoreManager?.addresses.count ?? 0 >= 0) {
+                let web3Mnemonics = Mnemonics(entropySize: EntropySize.b128, language: .english)
+                print(web3Mnemonics.description)
+                /*
+                 save  Mnemonics for later user also it can be stored some other place
+                 */
+                UserDefaults.standard.set(web3Mnemonics.description, forKey: KeyConstants.UserDefaults.kUserMnemonics)
+                web3KeyStore = try BIP32Keystore(mnemonics: web3Mnemonics, prefixPath: prefixPath)
+                print("keystore", web3KeyStore as Any)
+                guard let kStore = web3KeyStore else {
+                    return
+                }
+                let address = kStore.addresses.first
+                let param = kStore.keystoreParams
+                #if DEBUG
+                print("Mnemonics :-> ", web3Mnemonics.description)
+                print("Address :::>>>>> ", address as Any)
+                print("Address :::>>>>> ", kStore.addresses as Any)
+                let privatKey = try kStore.UNSAFE_getPrivateKeyData(password: "", account: address!)
+                print(privatKey, "Is the private key")
+                #endif
+                let keyData = try? JSONEncoder().encode(param)
+                FileManager.default.createFile(atPath: userDir + "/keystore"+"/key.json", contents: keyData, attributes: nil)
+            } else {
+                web3KeyStore = web3KeystoreManager?.walletForAddress((web3KeystoreManager?.addresses[0])!) as? BIP32Keystore
+            }
+        } catch {
+            throw WalletCreationError.error
+        }
+    }
+    
+}

HelperMethodsForApp/KeystoreWrapper.swift

@@ -0,0 +1,32 @@
+//
+//  KeystoreWrapper.swift
+//  Wethio Wallet
+//
+//  Created by Ravi Ranjan on 22/08/21.
+//  Copyright © 2021 [email protected]. All rights reserved.
+//
+
+import Foundation
+import web3swift
+
+class KeystoreWrapper: NSObject {
+    /// Get KeyStore manager Instance
+    ///
+    /// - Parameters: nil
+    /// - Returns: Key store manager
+    
+    static func getKeystoreManager () -> KeystoreManager? {
+        let userDir = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
+        let path = userDir+"/keystore/"
+        return KeystoreManager.managerForPath(path, scanForHDwallets: true, suffix: "json")
+       
+    }
+    /// Get Wallet address
+    ///
+    /// - Parameters:
+    /// - Returns: Current wallet address
+    static func getWalletAddress () -> String? {
+        return getKeystoreManager()?.addresses.first?.address
+    }
+    
+}