feat: allow QML UI to reset a model::AccountInput object

Being able to reset an account input model to the default state allows for QML UI to safely reuse an account input.
This lets it delegate populating to other code and then finally forward it to other QML code when control returns to the UI.

Issues: #7, #14

src/model/input.cpp

@@ -36,6 +36,21 @@ namespace model
     {
     }
 
+    void AccountInput::reset(void)
+    {
+        setType(TokenType::Totp);
+        setName(QString());
+        setIssuer(QString());
+        setSecret(QString());
+        setTokenLength(6U);
+        setTimeStep(30U);
+        setAlgorithm(TOTPAlgorithm::Sha1);
+        setEpoch(DEFAULT_EPOCH);
+        setChecksum(false);
+        setCounter(0ULL);
+        setDynamicTruncation();
+    }
+
     void AccountInput::createNewAccount(accounts::AccountStorage *storage) const
     {
         if (!storage) {

src/model/input.h

@@ -43,6 +43,7 @@ namespace model
         Q_ENUM(TokenType)
         AccountInput(QObject *parent = nullptr);
         void createNewAccount(accounts::AccountStorage *storage) const;
+        Q_INVOKABLE void reset(void);
     public:
         TokenType type(void) const;
         void setType(model::AccountInput::TokenType type);