Add "use one-time password" option that can hide the field

This is useful for users who choose to not use OTP, and the layout
is improved so the field is automatically hidden for Sapphire servers,
which don't support OTP.

The register button is also hidden automatically for Square Enix
accounts, instead of simply disabling the button.

include/launchercore.h

@@ -75,6 +75,7 @@ struct ProfileSettings {
     bool isSapphire = false;
     QString lobbyURL;
     bool rememberUsername = false, rememberPassword = false;
+    bool useOneTimePassword = false;
 
     GameLicense license = GameLicense::WindowsStandalone;
 };

include/launcherwindow.h

@@ -6,6 +6,7 @@
 #include <QPushButton>
 #include <QTreeWidget>
 #include <QGridLayout>
+#include <QFormLayout>
 
 #include "launchercore.h"
 #include "headline.h"
@@ -31,6 +32,7 @@ private:
     bool currentlyReloadingControls = false;
 
     QGridLayout* layout;
+    QFormLayout* loginLayout;
 
     QLabel* bannerImageView;
     QTreeWidget* newsListView;

include/settingswindow.h

@@ -54,6 +54,7 @@ private:
     QLineEdit* lobbyServerURL = nullptr;
     QCheckBox* rememberUsernameBox = nullptr, *rememberPasswordBox = nullptr;
     QComboBox* gameLicenseBox = nullptr;
+    QCheckBox* useOneTimePassword = nullptr;
 
     // dalamud
     QCheckBox* enableDalamudBox = nullptr;

src/launchercore.cpp

@@ -370,6 +370,7 @@ void LauncherCore::readInitialInformation() {
         profile.lobbyURL = settings.value("lobbyURL", defaultSettings.lobbyURL).toString();
         profile.rememberUsername = settings.value("rememberUsername", defaultSettings.rememberUsername).toBool();
         profile.rememberPassword = settings.value("rememberPassword", defaultSettings.rememberPassword).toBool();
+        profile.useOneTimePassword = settings.value("useOneTimePassword", defaultSettings.useOneTimePassword).toBool();
         profile.license = (GameLicense)settings.value("license", (int)defaultSettings.license).toInt();
 
         profile.useDX9 = settings.value("useDX9", defaultSettings.useDX9).toBool();
@@ -589,6 +590,7 @@ void LauncherCore::saveSettings() {
         settings.setValue("lobbyURL", profile.lobbyURL);
         settings.setValue("rememberUsername", profile.rememberUsername);
         settings.setValue("rememberPassword", profile.rememberPassword);
+        settings.setValue("useOneTimePassword", profile.useOneTimePassword);
         settings.setValue("license", (int)profile.license);
 
         settings.setValue("enableDalamud", profile.dalamud.enabled);

src/launcherwindow.cpp

@@ -110,7 +110,7 @@ LauncherWindow::LauncherWindow(LauncherCore& core, QWidget* parent) : QMainWindo
         QDesktopServices::openUrl(url);
     });
 
-    auto loginLayout = new QFormLayout();
+    loginLayout = new QFormLayout();
     layout->addLayout(loginLayout, 0, 1, 1, 1);
 
     profileSelect = new QComboBox();
@@ -142,13 +142,8 @@ LauncherWindow::LauncherWindow(LauncherCore& core, QWidget* parent) : QMainWindo
     loginLayout->addRow("Remember Password?", rememberPasswordBox);
 
     otpEdit = new QLineEdit();
-    loginLayout->addRow("One-Time Password", otpEdit);
-
     loginButton = new QPushButton("Login");
-    loginLayout->addRow(loginButton);
-
     registerButton = new QPushButton("Register");
-    loginLayout->addRow(registerButton);
 
     auto emptyWidget = new QWidget();
     emptyWidget->setLayout(layout);
@@ -274,10 +269,6 @@ void LauncherWindow::reloadControls() {
         loginButton->setText("Login (Game is not installed)");
     }
 
-    loginButton->setEnabled(canLogin);
-    registerButton->setEnabled(currentProfile().isSapphire);
-    otpEdit->setEnabled(!currentProfile().isSapphire);
-
     launchOfficial->setEnabled(currentProfile().isGameInstalled());
     launchSysInfo->setEnabled(currentProfile().isGameInstalled());
     launchCfgBackup->setEnabled(currentProfile().isGameInstalled());
@@ -292,6 +283,30 @@ void LauncherWindow::reloadControls() {
     layout->removeWidget(newsListView);
     newsListView->hide();
 
+    auto field = loginLayout->labelForField(otpEdit);
+    if(field != nullptr)
+        field->deleteLater();
+
+    loginLayout->takeRow(otpEdit);
+    otpEdit->hide();
+
+    if(currentProfile().useOneTimePassword && !currentProfile().isSapphire) {
+        loginLayout->addRow("One-Time Password", otpEdit);
+        otpEdit->show();
+    }
+
+    loginLayout->takeRow(loginButton);
+    loginButton->setEnabled(canLogin);
+    loginLayout->addRow(loginButton);
+
+    loginLayout->takeRow(registerButton);
+    registerButton->hide();
+
+    if(currentProfile().isSapphire) {
+        loginLayout->addRow(registerButton);
+        registerButton->show();
+    }
+
     if(core.appSettings.showBanners || core.appSettings.showNewsList) {
         int totalRow = 0;
         if(core.appSettings.showBanners) {

src/settingswindow.cpp

@@ -239,6 +239,16 @@ SettingsWindow::SettingsWindow(int defaultTab, LauncherWindow& window, LauncherC
         });
         loginBoxLayout->addRow("Remember Password", rememberPasswordBox);
 
+        useOneTimePassword = new QCheckBox();
+        connect(useOneTimePassword, &QCheckBox::stateChanged, [=](int) {
+            getCurrentProfile().useOneTimePassword =
+                useOneTimePassword->isChecked();
+
+            this->core.saveSettings();
+            this->window.reloadControls();
+        });
+        loginBoxLayout->addRow("Use One-time Password", useOneTimePassword);
+
 #if defined(Q_OS_MAC) || defined(Q_OS_LINUX)
         auto wineBox = new QGroupBox("Wine Options");
         auto wineBoxLayout = new QFormLayout();
@@ -516,6 +526,7 @@ void SettingsWindow::reloadControls() {
     }
     rememberUsernameBox->setChecked(profile.rememberUsername);
     rememberPasswordBox->setChecked(profile.rememberPassword);
+    useOneTimePassword->setChecked(profile.useOneTimePassword);
     gameLicenseBox->setCurrentIndex((int)profile.license);
 
     // dalamud