feat: download game files during instance creation

Signed-off-by: Octol1ttle <l1ttleofficial@outlook.com>

launcher/InstanceCreationTask.cpp

@@ -2,7 +2,23 @@
 
 #include <QDebug>
 #include <QFile>
-#include "FileSystem.h"
+
+#include "minecraft/MinecraftLoadAndCheck.h"
+#include "tasks/SequentialTask.h"
+
+bool InstanceCreationTask::abort()
+{
+    if (!canAbort()) {
+        return false;
+    }
+
+    m_abort = true;
+    if (m_gameFilesTask) {
+        return m_gameFilesTask->abort();
+    }
+
+    return true;
+}
 
 void InstanceCreationTask::executeTask()
 {
@@ -19,7 +35,8 @@ void InstanceCreationTask::executeTask()
         return;
     }
 
-    if (!createInstance()) {
+    m_instance = createInstance();
+    if (!m_instance) {
         if (m_abort)
             return;
 
@@ -61,6 +78,32 @@ void InstanceCreationTask::executeTask()
             return;
         }
     }
-    if (!m_abort)
-        emitSucceeded();
+
+    if (!m_abort) {
+        setAbortable(true);
+        setStatus(tr("Downloading game files"));
+        qDebug() << "Downloading game files";
+
+        auto updateTasks = m_instance->createUpdateTask();
+        if (updateTasks.isEmpty()) {
+            emitSucceeded();
+            return;
+        }
+        auto task = makeShared<SequentialTask>();
+        task->addTask(makeShared<MinecraftLoadAndCheck>(m_instance.get(), Net::Mode::Online));
+        for (const auto& t : updateTasks) {
+            task->addTask(t);
+        }
+        connect(task.get(), &Task::finished, this, [this, task] {
+            if (task->wasSuccessful() || m_abort) {
+                emitSucceeded();
+            } else {
+                emitFailed(tr("Could not download game files: %1").arg(task->failReason()));
+            }
+        });
+        propagateFromOther(task.get());
+
+        m_gameFilesTask = task;
+        m_gameFilesTask->start();
+    }
 }

launcher/InstanceCreationTask.h

@@ -10,6 +10,8 @@ class InstanceCreationTask : public InstanceTask {
     InstanceCreationTask() = default;
     virtual ~InstanceCreationTask() = default;
 
+    bool abort() override;
+
    protected:
     void executeTask() final override;
 
@@ -44,4 +46,6 @@ class InstanceCreationTask : public InstanceTask {
 
    private:
     QString m_error_message;
+    std::unique_ptr<MinecraftInstance> m_instance;
+    Task::Ptr m_gameFilesTask;
 };

launcher/InstanceList.cpp

@@ -938,9 +938,7 @@ class InstanceStaging : public Task {
         if (!canAbort())
             return false;
 
-        m_child->abort();
-
-        return Task::abort();
+        return m_child->abort();
     }
     bool canAbort() const override { return (m_child && m_child->canAbort()); }
 

launcher/modplatform/flame/FlameInstanceCreationTask.cpp

@@ -75,7 +75,6 @@ bool FlameCreationTask::abort()
     if (!canAbort())
         return false;
 
-    m_abort = true;
     if (m_processUpdateFileInfoJob)
         m_processUpdateFileInfoJob->abort();
     if (m_filesJob)
@@ -83,7 +82,7 @@ bool FlameCreationTask::abort()
     if (m_modIdResolver)
         m_modIdResolver->abort();
 
-    return Task::abort();
+    return InstanceCreationTask::abort();
 }
 
 bool FlameCreationTask::updateInstance()

launcher/modplatform/modrinth/ModrinthInstanceCreationTask.cpp

@@ -32,10 +32,9 @@ bool ModrinthCreationTask::abort()
     if (!canAbort())
         return false;
 
-    m_abort = true;
     if (m_task)
         m_task->abort();
-    return Task::abort();
+    return InstanceCreationTask::abort();
 }
 
 bool ModrinthCreationTask::updateInstance()