1 files changed, 152 insertions, 0 deletions
diff --git a/launcher/ui/pages/instance/ManagedPackPage.h b/launcher/ui/pages/instance/ManagedPackPage.h
new file mode 100644
index 00000000..d29a5e88
--- /dev/null
+++ b/launcher/ui/pages/instance/ManagedPackPage.h
@@ -0,0 +1,152 @@
+// SPDX-FileCopyrightText: 2022 flow <flowlnlnln@gmail.com>
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
+#pragma once
+
+#include "BaseInstance.h"
+
+#include "modplatform/modrinth/ModrinthAPI.h"
+#include "modplatform/modrinth/ModrinthPackManifest.h"
+
+#include "modplatform/flame/FlameAPI.h"
+#include "modplatform/flame/FlamePackIndex.h"
+
+#include "ui/pages/BasePage.h"
+
+#include <QWidget>
+
+namespace Ui {
+class ManagedPackPage;
+}
+
+class InstanceTask;
+class InstanceWindow;
+
+class ManagedPackPage : public QWidget, public BasePage {
+    Q_OBJECT
+
+   public:
+    inline static ManagedPackPage* createPage(BaseInstance* inst, QWidget* parent = nullptr)
+    {
+        return ManagedPackPage::createPage(inst, inst->getManagedPackType(), parent);
+    }
+
+    static ManagedPackPage* createPage(BaseInstance* inst, QString type, QWidget* parent = nullptr);
+    ~ManagedPackPage() override;
+
+    [[nodiscard]] QString displayName() const override;
+    [[nodiscard]] QIcon icon() const override;
+    [[nodiscard]] QString helpPage() const override;
+    [[nodiscard]] QString id() const override { return "managed_pack"; }
+    [[nodiscard]] bool shouldDisplay() const override;
+
+    void openedImpl() override;
+
+    bool apply() override { return true; }
+    void retranslate() override;
+
+    /** Gets the necessary information about the managed pack, such as
+     *  available versions*/
+    virtual void parseManagedPack(){};
+
+    /** URL of the managed pack.
+     *  Not the version-specific one.
+     */
+    [[nodiscard]] virtual QString url() const { return {}; };
+
+    void setInstanceWindow(InstanceWindow* window) { m_instance_window = window; }
+
+   public slots:
+    /** Gets the current version selection and update the UI, including the update button and the changelog.
+     */
+    virtual void suggestVersion();
+
+    virtual void update(){};
+
+   protected slots:
+    /** Does the necessary UI changes for when something failed.
+     *
+     *  This includes:
+     *  - Setting an appropriate text on the version selector to indicate a fail;
+     *  - Setting an appropriate text on the changelog text browser to indicate a fail;
+     *  - Disable the update button.
+     */
+    void setFailState();
+
+   protected:
+    ManagedPackPage(BaseInstance* inst, InstanceWindow* instance_window, QWidget* parent = nullptr);
+
+    /** Run the InstanceTask, with a progress dialog and all.
+     *  Similar to MainWindow::instanceFromInstanceTask
+     *
+     *  Returns whether the task was successful.
+     */
+    bool runUpdateTask(InstanceTask*);
+
+   protected:
+    InstanceWindow* m_instance_window = nullptr;
+
+    Ui::ManagedPackPage* ui;
+    BaseInstance* m_inst;
+
+    bool m_loaded = false;
+};
+
+/** Simple page for when we aren't a managed pack. */
+class GenericManagedPackPage final : public ManagedPackPage {
+    Q_OBJECT
+
+   public:
+    GenericManagedPackPage(BaseInstance* inst, InstanceWindow* instance_window, QWidget* parent = nullptr)
+        : ManagedPackPage(inst, instance_window, parent)
+    {}
+    ~GenericManagedPackPage() override = default;
+
+    // TODO: We may want to show this page with some useful info at some point.
+    [[nodiscard]] bool shouldDisplay() const override { return false; };
+};
+
+class ModrinthManagedPackPage final : public ManagedPackPage {
+    Q_OBJECT
+
+   public:
+    ModrinthManagedPackPage(BaseInstance* inst, InstanceWindow* instance_window, QWidget* parent = nullptr);
+    ~ModrinthManagedPackPage() override = default;
+
+    void parseManagedPack() override;
+    [[nodiscard]] QString url() const override;
+
+   public slots:
+    void suggestVersion() override;
+
+    void update() override;
+
+   private:
+    NetJob::Ptr m_fetch_job = nullptr;
+
+    Modrinth::Modpack m_pack;
+    ModrinthAPI m_api;
+};
+
+class FlameManagedPackPage final : public ManagedPackPage {
+    Q_OBJECT
+
+   public:
+    FlameManagedPackPage(BaseInstance* inst, InstanceWindow* instance_window, QWidget* parent = nullptr);
+    ~FlameManagedPackPage() override = default;
+
+    void parseManagedPack() override;
+    [[nodiscard]] QString url() const override;
+
+   public slots:
+    void suggestVersion() override;
+
+    void update() override;
+
+   private:
+    NetJob::Ptr m_fetch_job = nullptr;
+
+    Flame::IndexedPack m_pack;
+    FlameAPI m_api;
+};