3 files changed, 58 insertions, 11 deletions

diff --git a/launcher/modplatform/modrinth/ModrinthAPI.h b/launcher/modplatform/modrinth/ModrinthAPI.h
index 98f20b51..e83ed2bf 100644
--- a/launcher/modplatform/modrinth/ModrinthAPI.h
+++ b/launcher/modplatform/modrinth/ModrinthAPI.h
@@ -38,7 +38,7 @@ class ModrinthAPI : public NetworkResourceAPI {
     static auto getModLoaderStrings(const ModLoaderTypes types) -> const QStringList
     {
         QStringList l;
-        for (auto loader : {Forge, Fabric, Quilt}) {
+        for (auto loader : { Forge, Fabric, Quilt }) {
             if (types & loader) {
                 l << getModLoaderString(loader);
             }
@@ -51,8 +51,7 @@ class ModrinthAPI : public NetworkResourceAPI {
     static auto getModLoaderFilters(ModLoaderTypes types) -> const QString
     {
         QStringList l;
-        for (auto loader : getModLoaderStrings(types))
-        {
+        for (auto loader : getModLoaderStrings(types)) {
             l << QString("\"categories:%1\"").arg(loader);
         }
         return l.join(',');
@@ -135,16 +134,22 @@ class ModrinthAPI : public NetworkResourceAPI {
     auto getGameVersionsArray(std::list<Version> mcVersions) const -> QString
     {
         QString s;
-        for(auto& ver : mcVersions){
+        for (auto& ver : mcVersions) {
             s += QString("\"versions:%1\",").arg(ver.toString());
         }
-        s.remove(s.length() - 1, 1); //remove last comma
+        s.remove(s.length() - 1, 1);  // remove last comma
         return s.isEmpty() ? QString() : s;
     }
 
-    inline auto validateModLoaders(ModLoaderTypes loaders) const -> bool
-    {
-        return loaders & (Forge | Fabric | Quilt);
-    }
+    inline auto validateModLoaders(ModLoaderTypes loaders) const -> bool { return loaders & (Forge | Fabric | Quilt); }
 
+    [[nodiscard]] std::optional<QString> getDependencyURL(DependencySearchArgs const& args) const override
+    {
+        return args.dependency.version.length() != 0 ? QString("%1/version/%2").arg(BuildConfig.MODRINTH_PROD_URL, args.dependency.version)
+                                                     : QString("%1/project/%2/version?game_versions=[\"%3\"]&loaders=[\"%4\"]")
+                                                           .arg(BuildConfig.MODRINTH_PROD_URL)
+                                                           .arg(args.dependency.addonId.toString())
+                                                           .arg(args.mcVersion.toString())
+                                                           .arg(getModLoaderStrings(args.loader).join("\",\""));
+    };
 };
diff --git a/launcher/modplatform/modrinth/ModrinthPackIndex.cpp b/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
index 7ade131e..b4037349 100644
--- a/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
+++ b/launcher/modplatform/modrinth/ModrinthPackIndex.cpp
@@ -22,7 +22,7 @@
 #include "Json.h"
 #include "minecraft/MinecraftInstance.h"
 #include "minecraft/PackProfile.h"
-#include "net/NetJob.h"
+#include "modplatform/ModIndex.h"
 
 static ModrinthAPI api;
 static ModPlatform::ProviderCapabilities ProviderCaps;
@@ -140,6 +140,28 @@ auto Modrinth::loadIndexedPackVersion(QJsonObject& obj, QString preferred_hash_t
     file.version_number = Json::requireString(obj, "version_number");
     file.changelog = Json::requireString(obj, "changelog");
 
+    auto dependencies = Json::ensureArray(obj, "dependencies");
+    for (auto d : dependencies) {
+        auto dep = Json::ensureObject(d);
+        ModPlatform::Dependency dependency;
+        dependency.addonId = Json::ensureString(dep, "project_id");
+        dependency.version = Json::ensureString(dep, "version_id");
+        auto depType = Json::requireString(dep, "dependency_type");
+
+        if (depType == "required")
+            dependency.type = ModPlatform::DependencyType::REQUIRED;
+        else if (depType == "optional")
+            dependency.type = ModPlatform::DependencyType::OPTIONAL;
+        else if (depType == "incompatible")
+            dependency.type = ModPlatform::DependencyType::INCOMPATIBLE;
+        else if (depType == "embedded")
+            dependency.type = ModPlatform::DependencyType::EMBEDDED;
+        else
+            dependency.type = ModPlatform::DependencyType::UNKNOWN;
+
+        file.dependencies.append(dependency);
+    }
+
     auto files = Json::requireArray(obj, "files");
     int i = 0;
 
@@ -195,3 +217,22 @@ auto Modrinth::loadIndexedPackVersion(QJsonObject& obj, QString preferred_hash_t
 
     return {};
 }
+
+auto Modrinth::loadDependencyVersions(const ModPlatform::Dependency& m, QJsonArray& arr) -> ModPlatform::IndexedVersion
+{
+    QVector<ModPlatform::IndexedVersion> versions;
+
+    for (auto versionIter : arr) {
+        auto obj = versionIter.toObject();
+        auto file = loadIndexedPackVersion(obj);
+
+        if (file.fileId.isValid())  // Heuristic to check if the returned value is valid
+            versions.append(file);
+    }
+    auto orderSortPredicate = [](const ModPlatform::IndexedVersion& a, const ModPlatform::IndexedVersion& b) -> bool {
+        // dates are in RFC 3339 format
+        return a.date > b.date;
+    };
+    std::sort(versions.begin(), versions.end(), orderSortPredicate);
+    return versions.length() != 0 ? versions.front() : ModPlatform::IndexedVersion();
+}
\ No newline at end of file
diff --git a/launcher/modplatform/modrinth/ModrinthPackIndex.h b/launcher/modplatform/modrinth/ModrinthPackIndex.h
index e73e4b18..a8d986c5 100644
--- a/launcher/modplatform/modrinth/ModrinthPackIndex.h
+++ b/launcher/modplatform/modrinth/ModrinthPackIndex.h
@@ -19,8 +19,8 @@
 
 #include "modplatform/ModIndex.h"
 
-#include "BaseInstance.h"
 #include <QNetworkAccessManager>
+#include "BaseInstance.h"
 
 namespace Modrinth {
 
@@ -31,5 +31,6 @@ void loadIndexedPackVersions(ModPlatform::IndexedPack& pack,
                              const shared_qobject_ptr<QNetworkAccessManager>& network,
                              const BaseInstance* inst);
 auto loadIndexedPackVersion(QJsonObject& obj, QString hash_type = "sha512", QString filename_prefer = "") -> ModPlatform::IndexedVersion;
+auto loadDependencyVersions(const ModPlatform::Dependency& m, QJsonArray& arr) -> ModPlatform::IndexedVersion;
 
 }  // namespace Modrinth