1 files changed, 16 insertions, 4 deletions
diff --git a/launcher/ui/pages/modplatform/ModModel.cpp b/launcher/ui/pages/modplatform/ModModel.cpp
index 3ffe6cb0..b7537890 100644
--- a/launcher/ui/pages/modplatform/ModModel.cpp
+++ b/launcher/ui/pages/modplatform/ModModel.cpp
@@ -6,12 +6,14 @@
 
 #include "minecraft/MinecraftInstance.h"
 #include "minecraft/PackProfile.h"
+#include "minecraft/mod/ModFolderModel.h"
 
 #include <QMessageBox>
+#include <algorithm>
 
 namespace ResourceDownload {
 
-ModModel::ModModel(BaseInstance const& base_inst, ResourceAPI* api) : ResourceModel(api), m_base_instance(base_inst) {}
+ModModel::ModModel(BaseInstance& base_inst, ResourceAPI* api) : ResourceModel(api), m_base_instance(base_inst) {}
 
 /******** Make data requests ********/
 
@@ -24,7 +26,7 @@ ResourceAPI::SearchArgs ModModel::createSearchArguments()
 
     std::optional<std::list<Version>> versions{};
 
-    { // Version filter
+    {  // Version filter
         if (!m_filter->versions.empty())
             versions = m_filter->versions;
     }
@@ -36,7 +38,7 @@ ResourceAPI::SearchArgs ModModel::createSearchArguments()
 
 ResourceAPI::VersionSearchArgs ModModel::createVersionsArguments(QModelIndex& entry)
 {
-    auto& pack = m_packs[entry.row()];
+    auto& pack = *m_packs[entry.row()];
     auto profile = static_cast<MinecraftInstance const&>(m_base_instance).getPackProfile();
 
     Q_ASSERT(profile);
@@ -51,7 +53,7 @@ ResourceAPI::VersionSearchArgs ModModel::createVersionsArguments(QModelIndex& en
 
 ResourceAPI::ProjectInfoArgs ModModel::createInfoArguments(QModelIndex& entry)
 {
-    auto& pack = m_packs[entry.row()];
+    auto& pack = *m_packs[entry.row()];
     return { pack };
 }
 
@@ -67,4 +69,14 @@ void ModModel::searchWithTerm(const QString& term, unsigned int sort, bool filte
     refresh();
 }
 
+bool ModModel::isPackInstalled(ModPlatform::IndexedPack::Ptr pack) const
+{
+    auto allMods = static_cast<MinecraftInstance&>(m_base_instance).loaderModList()->allMods();
+    return std::any_of(allMods.cbegin(), allMods.cend(), [pack](Mod* mod) {
+        if (auto meta = mod->metadata(); meta)
+            return meta->provider == pack->provider && meta->project_id == pack->addonId;
+        return false;
+    });
+}
+
 }  // namespace ResourceDownload