Cleaning up and adding confirmation stuff to not blow everything up

mainwindow.cpp

@@ -38,6 +38,7 @@ MainWindow::~MainWindow()
 
 void MainWindow::on_install_update_button_clicked()
 {
+    if (ConfirmationPopup()) {
         QNetworkRequest request(downloadUrl);
         reply = net->get(request);
 
@@ -50,6 +51,7 @@ void MainWindow::on_install_update_button_clicked()
         connect(reply, SIGNAL(downloadProgress(qint64, qint64)), this, SLOT(UpdateProgress(qint64, qint64)));
         connect(reply, SIGNAL(finished()), this, SLOT(FinishedDownloading()));
     }
+}
 
 void MainWindow::UpdateProgress(qint64 read, qint64 total) {
     ui->mf_progress_bar->setMaximum(total);
@@ -74,8 +76,14 @@ void MainWindow::FinishedDownloading() {
     ui->install_update_button->show();
     ui->install_update_button->setText(QString("Unzipping..."));
 
-    // Unzip
+    // Unzip the file - this version isn't really checking if the file is really us so at the very least the name needs to match.
+    // Otherwise we could end up damaging the ecosystem more than necessary.
+    if (std::filesystem::exists(downloadLocation.toStdString())) {
         Install();
+    } else {
+        QMessageBox::critical(nullptr, "Wrong format", "The downloaded file appears to not exist - or is more likely just not named mods.zip -> you either downloaded a bad file or Jesse named his file wrong. Tell him to fix it!!");
+        PostInstallMode();
+    }
 }
 
 std::string MainWindow::BuildUnzipCmd() {
@@ -93,11 +101,17 @@ void MainWindow::Install() {
     uint8_t installStage = 1;
     ui->mf_progress_bar->setValue(installStage++);
     ui->mf_progress_bar->setMaximum(MAX_INSTALL_STAGES);
+
+    modsDir.append("mods");
+
     // COND 1: If mods dir exists we need to nuke it
     // COND 2: If mods dir exists & it was our install location do NOT nuke it!
-    if (std::filesystem::is_directory(modsDir.toStdString().append("mods")) && modsDir != downloadLocation) {
-        modsDir.append("mods");
-        std::filesystem::remove_all(modsDir.toStdString());
+    if (std::filesystem::is_directory(modsDir.toStdString()) && modsDir != downloadLocation) {
+        std::filesystem::remove_all(modsDir.toStdString()); // Force empty the mods folder inside the .minecraft dir
+    }
+
+    if (!std::filesystem::exists(modsDir.toStdString())) {
+        std::filesystem::create_directory(modsDir.toStdString());
     }
 
     ui->mf_progress_bar->setValue(installStage++);
@@ -106,6 +120,16 @@ void MainWindow::Install() {
 
     ui->mf_progress_bar->setValue(installStage++);
 
+    // Clean up after ourselves; remove the file if possible
+    try {
+        if (std::filesystem::exists(downloadLocation.toStdString())) {
+            std::filesystem::remove(downloadLocation.toStdString());
+        }
+    } catch (std::exception e) {
+        QString errorMsg = QString("Slight error - unable to cleanup after ourselves and could not remove leftover downloaded zip file located at %1").arg(downloadLocation);
+        QMessageBox::information(nullptr, "Failed to cleanup!", errorMsg);
+    }
+
     QMessageBox::information(nullptr, "Completed", "The installer has successfully finished. You may now close the installer and launch Minecraft!");
     PostInstallMode();
 }
@@ -131,6 +155,16 @@ void MainWindow::PostInstallMode() {
     ui->close_launcher->setVisible(true);
 }
 
+bool MainWindow::ConfirmationPopup() {
+    // This is the preinstall pop up box
+    QString tempInstallPath = "Install to: " + modsDir;
+    QString tempDlSrvr = "Grab mods.zip from: " + downloadUrl.toString();
+    QString formatted = tempInstallPath.append("\n").append(tempDlSrvr);
+    QMessageBox::StandardButton reply = QMessageBox::question(nullptr, "Confirm install options...", formatted);
+
+    return reply == QMessageBox::Yes;
+}
+
 void MainWindow::UpdateOSAgnosticInformation() {
 #ifdef _WIN64
     isLinux = false;
@@ -140,17 +174,19 @@ void MainWindow::UpdateOSAgnosticInformation() {
         downloadLocation = QString::fromStdString(execPath.string()); // Stick the mods inside the roaming directory; but not the .minecraft directory itself.
         modsDir = downloadLocation + "\\.minecraft\\";
         downloadLocation.append("\\mods.zip"); // Should point to %APPDATA%\mods.zip
+
+    } else {
+        QMessageBox::warning(nullptr, "Warning", "Unable to resolve APPDATA environment variable. You must manually set the .minecraft folder location");
     }
 #elif __unix__
     isLinux = true;
     downloadLocation = getenv("HOME");
     modsDir = downloadLocation + "/.minecraft/"; // Default value
-
-    ui->mcInstallDir->setText(modsDir); // Tell the user the default location for their .minecraft folder.
 #endif
 
     // Update the UI to reflect the default values correctly
     ui->sf_dl_server->setPlainText(downloadUrl.toString());
+    ui->mcInstallDir->setText(modsDir);
 }
 
 
@@ -177,3 +213,9 @@ void MainWindow::on_changeInstallPathButton_clicked()
     ui->mcInstallDir->setText(modsDir);
 }
 
+
+void MainWindow::on_sf_dl_server_textChanged()
+{
+    downloadUrl = ui->sf_dl_server->toPlainText();
+}
+

mainwindow.h

@@ -26,6 +26,7 @@ public:
     std::string BuildUnzipCmd();
     void PreInstallMode();
     void PostInstallMode();
+    bool ConfirmationPopup();
 private slots:
     void UpdateProgress(qint64, qint64);
     void FinishedDownloading();
@@ -38,11 +39,13 @@ private slots:
 
     void on_changeInstallPathButton_clicked();
 
+    void on_sf_dl_server_textChanged();
+
 private:
     Ui::MainWindow *ui;
     QNetworkAccessManager* net = nullptr;
     QUrl downloadUrl {"https://www.techyjessy.tech/downloads/mods.zip"};
-    QString modsDir;
+    QString modsDir = "Set .minecraft path here...";
     QString downloadLocation;
     QNetworkReply* reply = nullptr;