feat(Onboarding): validate mnemonic when importing seed phrase

Closes #395

src/app/onboarding/view.nim

@@ -2,7 +2,7 @@ import NimQml, Tables, json, nimcrypto, strformat, json_serialization, strutils
 import ../../status/libstatus/types as status_types
 import ../../signals/types
 import ../../status/accounts as AccountModel
-import ../../status/status
+import ../../status/[status, wallet]
 import views/account_info
 
 type
@@ -90,6 +90,9 @@ QtObject:
     except StatusGoException as e:
       result = StatusGoError(error: e.msg).toJson
 
+  proc validateMnemonic*(self: OnboardingView, mnemonic: string): string {.slot.} =
+     result = self.status.wallet.validateMnemonic(mnemonic)
+
   proc storeDerivedAndLogin(self: OnboardingView, password: string): string {.slot.} =
     try:
       result = self.status.accounts.storeDerivedAndLogin(self.currentAccount.account, password).toJson

src/status/libstatus/libstatus.nim

@@ -35,3 +35,5 @@ proc identicon*(p0: GoString): cstring {.importc: "Identicon".}
 proc login*(acctData: cstring, password: cstring): cstring {.importc: "Login".}
 
 proc logout*(): cstring {.importc: "Logout".}
+
+proc validateMnemonic*(mnemonic: cstring): cstring {.importc: "ValidateMnemonic".}

src/status/libstatus/wallet.nim

@@ -1,5 +1,5 @@
 import json, httpclient, json, strformat, stint, strutils, sequtils, chronicles
-import core, types
+import libstatus, core, types
 import ../wallet/account
 
 proc getWalletAccounts*(): seq[WalletAccount] =
@@ -77,3 +77,6 @@ proc hex2Eth*(input: string): string =
 
   var (eth, remainder) = divmod(value, one_eth)
   fmt"{eth}.{remainder}"
+
+proc validateMnemonic*(mnemonic: string): string =
+  result = $libstatus.validateMnemonic(mnemonic)

src/status/wallet.nim

@@ -154,3 +154,7 @@ proc toggleAsset*(self: WalletModel, symbol: string, enable: bool, address: stri
 
 proc getTransfersByAddress*(self: WalletModel, address: string): seq[Transaction] =
  result = status_wallet.getTransfersByAddress(address)
+
+proc validateMnemonic*(self: WalletModel, mnemonic: string): string =
+  result = status_wallet.validateMnemonic(mnemonic).parseJSON()["error"].getStr
+

ui/onboarding/EnterSeedPhraseModal.qml

@@ -68,9 +68,7 @@ ModalPopup {
             if (mnemonicTextField.text === "") {
                 return
             }
-
             onConfirmSeedClick(mnemonicTextField.text)
-            popup.close()
         }
     }
 }

ui/onboarding/ExistingKey.qml

@@ -14,9 +14,16 @@ Item {
         property bool wentNext: false
         id: enterSeedPhraseModal
         onConfirmSeedClick: function (mnemonic) {
-            wentNext = true
-            onboardingModel.importMnemonic(mnemonic)
-            createPasswordModal.open()
+            let error = onboardingModel.validateMnemonic(mnemonic)
+            if (error != "") {
+              invalidSeedPhraseModal.error = error
+              invalidSeedPhraseModal.open()
+            } else {
+              wentNext = true
+              enterSeedPhraseModal.close()
+              onboardingModel.importMnemonic(mnemonic)
+              createPasswordModal.open()
+            }
         }
         onClosed: function () {
             if (!wentNext) {
@@ -31,6 +38,10 @@ Item {
             existingKeyView.onClosed()
         }
     }
+
+    InvalidSeedPhraseModal {
+      id: invalidSeedPhraseModal
+    }
 }
 
 /*##^##

ui/onboarding/InvalidSeedPhraseModal.qml

@@ -0,0 +1,28 @@
+import QtQuick 2.13
+import QtQuick.Controls 2.13
+import "../imports"
+import "../shared"
+
+ModalPopup {
+  id: popup
+  title: qsTr("Invalid seed phrase")
+  height: 200
+  property string error: "Invalid seed phrase."
+
+  StyledText {
+      text: qsTr(popup.error)
+      anchors.horizontalCenter: parent.horizontalCenter
+      anchors.verticalCenter: parent.verticalCenter
+      font.pixelSize: 15
+  }
+  
+  footer: StyledButton {
+      anchors.right: parent.right
+      anchors.rightMargin: Theme.smallPadding
+      label: qsTr("Cancel")
+      anchors.bottom: parent.bottom
+      onClicked: {
+          popup.close()
+      }
+  }
+}

ui/onboarding/qmldir

@@ -8,3 +8,4 @@ Slide 1.0 Slide.qml
 EnterSeedPhraseModal 1.0 EnterSeedPhraseModal.qml
 CreatePasswordModal 1.0 CreatePasswordModal.qml
 GenKeyModal 1.0 GenKeyModal.qml
+InvalidSeedPhraseModal 1.0 InvalidSeedPhraseModal.qml