Add migration wizard, fix migration from custom paste instance

- Very basic wizard just to allow the user to choose whether to keep
  their old paste settings or use the new default settings.

- People who used custom 0x0 instances would just be kept on those
  settings and won't see the wizard.

launcher/Application.cpp

@@ -63,6 +63,7 @@
 #include "ui/setupwizard/SetupWizard.h"
 #include "ui/setupwizard/LanguageWizardPage.h"
 #include "ui/setupwizard/JavaWizardPage.h"
+#include "ui/setupwizard/PasteWizardPage.h"
 
 #include "ui/dialogs/CustomMessageBox.h"
 
@@ -676,21 +677,17 @@ Application::Application(int &argc, char **argv) : QApplication(argc, argv)
         // HACK: This code feels so stupid is there a less stupid way of doing this?
         {
             m_settings->registerSetting("PastebinURL", "");
-            QString pastebinURL = m_settings->get("PastebinURL").toString();
-
-            // If PastebinURL hasn't been set before then use the new default: mclo.gs
-            if (pastebinURL == "") {
             m_settings->registerSetting("PastebinType", PasteUpload::PasteType::Mclogs);
             m_settings->registerSetting("PastebinCustomAPIBase", "");
-            }
-            // Otherwise: use 0x0.st
-            else {
-                // The default custom endpoint would usually be "" (meaning there is no custom endpoint specified)
-                // But if the user had customised the paste URL then that should be carried over into the custom endpoint.
-                QString defaultCustomEndpoint = (pastebinURL == "https://0x0.st") ? "" : pastebinURL;
-                m_settings->registerSetting("PastebinType", PasteUpload::PasteType::NullPointer);
-                m_settings->registerSetting("PastebinCustomAPIBase", defaultCustomEndpoint);
 
+            QString pastebinURL = m_settings->get("PastebinURL").toString();
+
+            bool userHadNoPastebin = pastebinURL == "";
+            bool userHadDefaultPastebin = pastebinURL == "https://0x0.st";
+            if (!(userHadNoPastebin || userHadDefaultPastebin))
+            {
+                m_settings->set("PastebinType", PasteUpload::PasteType::NullPointer);
+                m_settings->set("PastebinCustomAPIBase", pastebinURL);
                 m_settings->reset("PastebinURL");
             }
 
@@ -929,7 +926,8 @@ bool Application::createSetupWizard()
             return true;
         return false;
     }();
-    bool wizardRequired = javaRequired || languageRequired;
+    bool pasteInterventionRequired = settings()->get("PastebinURL") != "";
+    bool wizardRequired = javaRequired || languageRequired || pasteInterventionRequired;
 
     if(wizardRequired)
     {
@@ -943,6 +941,11 @@ bool Application::createSetupWizard()
         {
             m_setupWizard->addPage(new JavaWizardPage(m_setupWizard));
         }
+
+        if (pasteInterventionRequired)
+        {
+            m_setupWizard->addPage(new PasteWizardPage(m_setupWizard));
+        }
         connect(m_setupWizard, &QDialog::finished, this, &Application::setupWizardFinished);
         m_setupWizard->show();
         return true;

launcher/CMakeLists.txt

@@ -661,6 +661,8 @@ SET(LAUNCHER_SOURCES
     ui/setupwizard/JavaWizardPage.h
     ui/setupwizard/LanguageWizardPage.cpp
     ui/setupwizard/LanguageWizardPage.h
+    ui/setupwizard/PasteWizardPage.cpp
+    ui/setupwizard/PasteWizardPage.h
 
     # GUI - themes
     ui/themes/FusionTheme.cpp
@@ -890,6 +892,7 @@ SET(LAUNCHER_SOURCES
 )
 
 qt5_wrap_ui(LAUNCHER_UI
+    ui/setupwizard/PasteWizardPage.ui
     ui/pages/global/AccountListPage.ui
     ui/pages/global/JavaPage.ui
     ui/pages/global/LauncherPage.ui

launcher/ui/setupwizard/PasteWizardPage.cpp

@@ -0,0 +1,42 @@
+#include "PasteWizardPage.h"
+#include "ui_PasteWizardPage.h"
+
+#include "Application.h"
+#include "net/PasteUpload.h"
+
+PasteWizardPage::PasteWizardPage(QWidget *parent) :
+    BaseWizardPage(parent),
+    ui(new Ui::PasteWizardPage)
+{
+    ui->setupUi(this);
+}
+
+PasteWizardPage::~PasteWizardPage()
+{
+    delete ui;
+}
+
+void PasteWizardPage::initializePage()
+{
+}
+
+bool PasteWizardPage::validatePage()
+{
+    auto s = APPLICATION->settings();
+    QString prevPasteURL = s->get("PastebinURL").toString();
+    s->reset("PastebinURL");
+    if (ui->previousSettingsRadioButton->isChecked())
+    {
+        bool usingDefaultBase = prevPasteURL == PasteUpload::PasteTypes.at(PasteUpload::PasteType::NullPointer).defaultBase;
+        s->set("PastebinType", PasteUpload::PasteType::NullPointer);
+        if (!usingDefaultBase)
+            s->set("PastebinCustomAPIBase", prevPasteURL);
+    }
+
+    return true;
+}
+
+void PasteWizardPage::retranslate()
+{
+    ui->retranslateUi(this);
+}

launcher/ui/setupwizard/PasteWizardPage.h

@@ -0,0 +1,27 @@
+#ifndef PASTEDEFAULTSCONFIRMATIONWIZARD_H
+#define PASTEDEFAULTSCONFIRMATIONWIZARD_H
+
+#include <QWidget>
+#include "BaseWizardPage.h"
+
+namespace Ui {
+class PasteWizardPage;
+}
+
+class PasteWizardPage : public BaseWizardPage
+{
+    Q_OBJECT
+
+public:
+    explicit PasteWizardPage(QWidget *parent = nullptr);
+    ~PasteWizardPage();
+
+    void initializePage() override;
+    bool validatePage() override;
+    void retranslate() override;
+
+private:
+    Ui::PasteWizardPage *ui;
+};
+
+#endif // PASTEDEFAULTSCONFIRMATIONWIZARD_H

launcher/ui/setupwizard/PasteWizardPage.ui

@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>PasteWizardPage</class>
+ <widget class="QWidget" name="PasteWizardPage">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>The default paste service has changed to mclo.gs, please choose what you want to do with your settings.</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="Line" name="line">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+    </widget>
+   </item>
+   <item>
+    <widget class="QRadioButton" name="defaultSettingsRadioButton">
+     <property name="text">
+      <string>Use new default service</string>
+     </property>
+     <property name="checked">
+      <bool>true</bool>
+     </property>
+     <attribute name="buttonGroup">
+      <string notr="true">buttonGroup</string>
+     </attribute>
+    </widget>
+   </item>
+   <item>
+    <widget class="QRadioButton" name="previousSettingsRadioButton">
+     <property name="text">
+      <string>Keep previous settings</string>
+     </property>
+     <property name="checked">
+      <bool>false</bool>
+     </property>
+     <attribute name="buttonGroup">
+      <string notr="true">buttonGroup</string>
+     </attribute>
+    </widget>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>156</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+ <buttongroups>
+  <buttongroup name="buttonGroup"/>
+ </buttongroups>
+</ui>