From a110d445ac48a2493bafef8c4ce59a234d0e648e Mon Sep 17 00:00:00 2001
From: Sefa Eyeoglu <contact@scrumplex.net>
Date: Sun, 15 May 2022 23:00:09 +0200
Subject: [PATCH] feat: support quilt.mod.json metadata

---
 launcher/minecraft/mod/LocalModParseTask.cpp | 53 +++++++++++++++++++-
 1 file changed, 52 insertions(+), 1 deletion(-)

diff --git a/launcher/minecraft/mod/LocalModParseTask.cpp b/launcher/minecraft/mod/LocalModParseTask.cpp
index f01da8ae..699cf7ee 100644
--- a/launcher/minecraft/mod/LocalModParseTask.cpp
+++ b/launcher/minecraft/mod/LocalModParseTask.cpp
@@ -8,6 +8,7 @@
 #include <quazip/quazipfile.h>
 #include <toml.h>
 
+#include "Json.h"
 #include "settings/INIFile.h"
 #include "FileSystem.h"
 
@@ -262,6 +263,43 @@ std::shared_ptr<ModDetails> ReadFabricModInfo(QByteArray contents)
     return details;
 }
 
+// https://github.com/QuiltMC/rfcs/blob/master/specification/0002-quilt.mod.json.md#the-schema_version-field
+std::shared_ptr<ModDetails> ReadQuiltModInfo(QByteArray contents)
+{
+    QJsonParseError jsonError;
+    QJsonDocument jsonDoc = QJsonDocument::fromJson(contents, &jsonError);
+    auto object = Json::requireObject(jsonDoc, "quilt.mod.json");
+    auto schemaVersion = Json::ensureInteger(object.value("schema_version"), 0, "Quilt schema_version");
+
+    std::shared_ptr<ModDetails> details = std::make_shared<ModDetails>();
+
+    if (schemaVersion == 1)
+    {
+        auto modInfo = Json::requireObject(object.value("quilt_loader"), "Quilt mod info");
+
+        details->mod_id = Json::requireString(modInfo.value("id"), "Mod ID");
+        details->version = Json::requireString(modInfo.value("version"), "Mod version");
+
+        auto modMetadata = Json::ensureObject(modInfo.value("metadata"));
+
+        details->name = Json::ensureString(modMetadata.value("name"), details->mod_id);
+        details->description = Json::ensureString(modMetadata.value("description"));
+
+        auto modContributors = Json::ensureObject(modMetadata.value("contributors"));
+
+        // We don't really care about the role of a contributor here
+        details->authors += modContributors.keys();
+
+        auto modContact = Json::ensureObject(modMetadata.value("contact"));
+
+        if (modContact.contains("homepage"))
+        {
+            details->homeurl = Json::requireString(modContact.value("homepage"));
+        }
+    }
+    return details;
+}
+
 std::shared_ptr<ModDetails> ReadForgeInfo(QByteArray contents)
 {
     std::shared_ptr<ModDetails> details = std::make_shared<ModDetails>();
@@ -391,7 +429,7 @@ void LocalModParseTask::processAsZip()
         zip.close();
         return;
     }
-    else if (zip.setCurrentFile("fabric.mod.json"))  // TODO: Support quilt.mod.json
+    else if (zip.setCurrentFile("fabric.mod.json"))
     {
         if (!file.open(QIODevice::ReadOnly))
         {
@@ -404,6 +442,19 @@ void LocalModParseTask::processAsZip()
         zip.close();
         return;
     }
+    else if (zip.setCurrentFile("quilt.mod.json"))
+    {
+        if (!file.open(QIODevice::ReadOnly))
+        {
+            zip.close();
+            return;
+        }
+
+        m_result->details = ReadQuiltModInfo(file.readAll());
+        file.close();
+        zip.close();
+        return;
+    }
     else if (zip.setCurrentFile("forgeversion.properties"))
     {
         if (!file.open(QIODevice::ReadOnly))