feat: add update mods to the ui / mod model

Signed-off-by: flow <flowlnlnln@gmail.com>

launcher/minecraft/mod/ModFolderModel.cpp

@@ -259,6 +259,18 @@ bool ModFolderModel::isValid()
     return m_dir.exists() && m_dir.isReadable();
 }
 
+auto ModFolderModel::selectedMods(QModelIndexList& indexes) -> std::list<Mod>
+{
+    std::list<Mod> selected_mods;
+    for (auto i : indexes) {
+        if(i.column() != 0)
+            continue;
+
+        selected_mods.push_back(mods[i.row()]);
+    }
+    return selected_mods;
+}
+
 // FIXME: this does not take disabled mod (with extra .disable extension) into account...
 bool ModFolderModel::installMod(const QString &filename)
 {

launcher/minecraft/mod/ModFolderModel.h

@@ -144,6 +144,8 @@ public:
         return mods;
     }
 
+    auto selectedMods(QModelIndexList& indexes) -> std::list<Mod>;
+
 public slots:
     void disableInteraction(bool disabled);
 

launcher/ui/pages/instance/ExternalResourcesPage.ui

@@ -147,6 +147,17 @@
     <string>Download a new resource</string>
    </property>
   </action>
+  <action name="actionUpdateItem">
+   <property name="enabled">
+    <bool>false</bool>
+   </property>
+   <property name="text">
+    <string>Check for &amp;Updates</string>
+   </property>
+   <property name="toolTip">
+    <string>"Tries to find / update all selected resources (all resources if none is selected)"</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

launcher/ui/pages/instance/ModFolderPage.cpp

@@ -49,6 +49,7 @@
 #include "ui/GuiUtil.h"
 #include "ui/dialogs/CustomMessageBox.h"
 #include "ui/dialogs/ModDownloadDialog.h"
+#include "ui/dialogs/ModUpdateDialog.h"
 
 #include "DesktopServices.h"
 
@@ -78,6 +79,23 @@ ModFolderPage::ModFolderPage(BaseInstance* inst, std::shared_ptr<ModFolderModel>
         ui->actionsToolbar->insertActionBefore(ui->actionAddItem, ui->actionDownloadItem);
 
         connect(ui->actionDownloadItem, &QAction::triggered, this, &ModFolderPage::installMods);
+
+        ui->actionUpdateItem->setToolTip(tr("Tries to find / update all selected mods (all mods if none is selected)"));
+        ui->actionsToolbar->insertActionAfter(ui->actionAddItem, ui->actionUpdateItem);
+        connect(ui->actionUpdateItem, &QAction::triggered, this, &ModFolderPage::updateMods);
+
+        connect(ui->treeView->selectionModel(), &QItemSelectionModel::selectionChanged, this,
+                [this] { ui->actionUpdateItem->setEnabled(ui->treeView->selectionModel()->hasSelection() || !m_model->empty()); });
+
+        connect(mods.get(), &ModFolderModel::rowsInserted, this,
+                [this] { ui->actionUpdateItem->setEnabled(ui->treeView->selectionModel()->hasSelection() || !m_model->empty()); });
+                
+        connect(mods.get(), &ModFolderModel::updateFinished, this, [this, mods] {
+            ui->actionUpdateItem->setEnabled(ui->treeView->selectionModel()->hasSelection() || !m_model->empty());
+
+            // Prevent a weird crash when trying to open the mods page twice in a session o.O
+            disconnect(mods.get(), &ModFolderModel::updateFinished, this, 0);
+        });
     }
 }
 
@@ -107,7 +125,6 @@ bool CoreModFolderPage::shouldDisplay() const
             return false;
         if (version->getComponent("net.minecraft")->getReleaseDateTime() < g_VersionFilterData.legacyCutoffDate)
             return true;
-        
     }
     return false;
 }
@@ -118,7 +135,7 @@ void ModFolderPage::installMods()
         return;
     if (m_instance->typeName() != "Minecraft")
         return;  // this is a null instance or a legacy instance
-    
+
     auto profile = static_cast<MinecraftInstance*>(m_instance)->getPackProfile();
     if (profile->getModLoaders() == ModAPI::Unspecified) {
         QMessageBox::critical(this, tr("Error"), tr("Please install a mod loader first!"));
@@ -140,7 +157,7 @@ void ModFolderPage::installMods()
             QStringList warnings = tasks->warnings();
             if (warnings.count())
                 CustomMessageBox::selectable(this, tr("Warnings"), warnings.join('\n'), QMessageBox::Warning)->show();
-            
+
             tasks->deleteLater();
         });
 
@@ -155,3 +172,58 @@ void ModFolderPage::installMods()
         m_model->update();
     }
 }
+
+void ModFolderPage::updateMods()
+{
+    auto selection = m_filterModel->mapSelectionToSource(ui->treeView->selectionModel()->selection()).indexes();
+
+    auto mods_list = m_model->selectedMods(selection);
+    bool use_all = mods_list.empty();
+    if (use_all)
+        mods_list = m_model->allMods().toStdList();
+
+    ModUpdateDialog update_dialog(this, m_instance, m_model, mods_list);
+    update_dialog.checkCandidates();
+
+    if (update_dialog.aborted()) {
+        CustomMessageBox::selectable(this, tr("Aborted"), tr("The mod updater was aborted!"), QMessageBox::Warning)->show();
+        return;
+    }
+    if (update_dialog.noUpdates()) {
+        CustomMessageBox::selectable(this, tr("Update checker"),
+                                     (mods_list.size() == 1)
+                                         ? tr("'%1' is up-to-date! :)").arg(mods_list.front().name())
+                                         : tr("All %1mods are up-to-date! :)").arg(use_all ? "" : (tr("selected") + " ")))
+            ->exec();
+        return;
+    }
+
+    if (update_dialog.exec()) {
+        ConcurrentTask* tasks = new ConcurrentTask(this);
+        connect(tasks, &Task::failed, [this, tasks](QString reason) {
+            CustomMessageBox::selectable(this, tr("Error"), reason, QMessageBox::Critical)->show();
+            tasks->deleteLater();
+        });
+        connect(tasks, &Task::aborted, [this, tasks]() {
+            CustomMessageBox::selectable(this, tr("Aborted"), tr("Download stopped by user."), QMessageBox::Information)->show();
+            tasks->deleteLater();
+        });
+        connect(tasks, &Task::succeeded, [this, tasks]() {
+            QStringList warnings = tasks->warnings();
+            if (warnings.count()) {
+                CustomMessageBox::selectable(this, tr("Warnings"), warnings.join('\n'), QMessageBox::Warning)->show();
+            }
+            tasks->deleteLater();
+        });
+
+        for (auto task : update_dialog.getTasks()) {
+            tasks->addTask(task);
+        }
+
+        ProgressDialog loadDialog(this);
+        loadDialog.setSkipButton(true, tr("Abort"));
+        loadDialog.execWithTask(tasks);
+
+        m_model->update();
+    }
+}

launcher/ui/pages/instance/ModFolderPage.h

@@ -56,6 +56,7 @@ class ModFolderPage : public ExternalResourcesPage {
 
    private slots:
     void installMods();
+    void updateMods();
 };
 
 class CoreModFolderPage : public ModFolderPage {