From b66c634983d0150594f61f8fe489cc2445122230 Mon Sep 17 00:00:00 2001
From: Collecting <collecting@noreply.localhost>
Date: Fri, 16 Jan 2026 08:30:13 +0000
Subject: [PATCH] create: mod_service.cpp

Signed-off-by: Collecting <collecting@noreply.localhost>
---
 src/citron/mod_manager/mod_service.cpp | 77 ++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 src/citron/mod_manager/mod_service.cpp

diff --git a/src/citron/mod_manager/mod_service.cpp b/src/citron/mod_manager/mod_service.cpp
new file mode 100644
index 000000000..60c728205
--- /dev/null
+++ b/src/citron/mod_manager/mod_service.cpp
@@ -0,0 +1,77 @@
+// SPDX-FileCopyrightText: Copyright 2026 citron Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <QNetworkAccessManager>
+#include <QNetworkReply>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QJsonArray>
+#include "citron/mod_manager/mod_service.h"
+
+namespace ModManager {
+
+ModService::ModService(QObject* parent) : QObject(parent) {
+    network_manager = std::make_unique<QNetworkAccessManager>(this);
+}
+
+ModService::~ModService() = default;
+
+void ModService::FetchAvailableMods(const QString& title_id) {
+    QNetworkRequest request{QUrl(MANIFEST_URL)};
+    QNetworkReply* reply = network_manager->get(request);
+
+    connect(reply, &QNetworkReply::finished, this, [this, reply, title_id]() {
+        if (reply->error() != QNetworkReply::NoError) {
+            emit Error(reply->errorString());
+            reply->deleteLater();
+            return;
+        }
+
+        QJsonDocument doc = QJsonDocument::fromJson(reply->readAll());
+        QJsonObject root = doc.object();
+
+        // Convert title_id to uppercase to match your folder/manifest structure
+        QString tid_upper = title_id.toUpper();
+        if (!root.contains(tid_upper)) {
+            emit Error(QStringLiteral("No mods found for this game in the repository."));
+            reply->deleteLater();
+            return;
+        }
+
+        ModUpdateInfo info;
+        info.title_id = title_id;
+
+        QJsonObject tid_obj = root.value(tid_upper).toObject();
+        QJsonObject versions_obj = tid_obj.value(QStringLiteral("versions")).toObject();
+
+        // Loop through every version found for this game (e.g., 1.0.0, 2.0.0)
+        for (auto it = versions_obj.begin(); it != versions_obj.end(); ++it) {
+            QString v_name = it.key();
+            QJsonObject v_data = it.value().toObject();
+            QJsonArray patches_array = v_data.value(QStringLiteral("patches")).toArray();
+
+            std::vector<ModPatch> patches;
+            for (const QJsonValue& val : patches_array) {
+                QJsonObject p_obj = val.toObject();
+                ModPatch patch;
+                patch.name = p_obj.value(QStringLiteral("name")).toString();
+                patch.type = p_obj.value(QStringLiteral("type")).toString();
+                patch.rel_path = p_obj.value(QStringLiteral("rel_path")).toString();
+
+                QJsonArray files_arr = p_obj.value(QStringLiteral("files")).toArray();
+                for (const QJsonValue& f : files_arr) {
+                    patch.files << f.toString();
+                }
+
+                patches.push_back(patch);
+            }
+            // Add this version and its mods to the map
+            info.version_patches[v_name] = patches;
+        }
+
+        emit ModsAvailable(info);
+        reply->deleteLater();
+    });
+}
+
+} // namespace ModManager