Technic: Allow pack API urls to be used in search

This mimics the behaviour that the Technic launcher has, and their
website displays API URLs for.

The big benefit of this, is to be able to install private packs now :)

launcher/ui/pages/modplatform/technic/TechnicModel.cpp

@@ -1,4 +1,24 @@
-/* Copyright 2020-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (c) 2021 Jamie Mansfield <jmansfield@cadixdev.org>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2020-2021 MultiMC Contributors
  *
  *      Licensed under the Apache License, Version 2.0 (the "License");
  *      you may not use this file except in compliance with the License.
@@ -95,12 +115,21 @@ void Technic::ListModel::performSearch()
     QString searchUrl = "";
     if (currentSearchTerm.isEmpty()) {
         searchUrl = "https://api.technicpack.net/trending?build=multimc";
+        searchMode = List;
     }
-    else
+    else if (currentSearchTerm.startsWith("http://api.technicpack.net/modpack/")) {
-    {
+        searchUrl = QString("https://%1?build=multimc").arg(currentSearchTerm.mid(7));
+        searchMode = Single;
+    }
+    else if (currentSearchTerm.startsWith("https://api.technicpack.net/modpack/")) {
+        searchUrl = QString("%1?build=multimc").arg(currentSearchTerm);
+        searchMode = Single;
+    }
+    else {
         searchUrl = QString(
             "https://api.technicpack.net/search?build=multimc&q=%1"
         ).arg(currentSearchTerm);
+        searchMode = List;
     }
     netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), &response));
     jobPtr = netJob;
@@ -125,6 +154,9 @@ void Technic::ListModel::searchRequestFinished()
     QList<Modpack> newList;
     try {
         auto root = Json::requireObject(doc);
+
+        switch (searchMode) {
+            case List: {
                 auto objs = Json::requireArray(root, "modpacks");
                 for (auto technicPack: objs) {
                     Modpack pack;
@@ -146,6 +178,35 @@ void Technic::ListModel::searchRequestFinished()
                     pack.broken = false;
                     newList.append(pack);
                 }
+                break;
+            }
+            case Single: {
+                if (root.contains("error")) {
+                    // Invalid API url
+                    break;
+                }
+
+                Modpack pack;
+                pack.name = Json::requireString(root, "displayName");
+                pack.slug = Json::requireString(root, "name");
+
+                if (root.contains("icon")) {
+                    auto iconObj = Json::requireObject(root, "icon");
+                    auto iconUrl = Json::requireString(iconObj, "url");
+
+                    pack.logoUrl = iconUrl;
+                    pack.logoName = iconUrl.section(QLatin1Char('/'), -1).section(QLatin1Char('.'), 0, 0);
+                }
+                else {
+                    pack.logoUrl = "null";
+                    pack.logoName = "null";
+                }
+
+                pack.broken = false;
+                newList.append(pack);
+                break;
+            }
+        }
     }
     catch (const JSONValidationError &err)
     {

launcher/ui/pages/modplatform/technic/TechnicModel.h

@@ -1,4 +1,24 @@
-/* Copyright 2020-2021 MultiMC Contributors
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  PolyMC - Minecraft Launcher
+ *  Copyright (c) 2021 Jamie Mansfield <jmansfield@cadixdev.org>
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * This file incorporates work covered by the following copyright and
+ * permission notice:
+ *
+ *      Copyright 2020-2021 MultiMC Contributors
  *
  *      Licensed under the Apache License, Version 2.0 (the "License");
  *      you may not use this file except in compliance with the License.
@@ -63,6 +83,10 @@ private:
         ResetRequested,
         Finished
     } searchState = None;
+    enum SearchMode {
+        List,
+        Single,
+    } searchMode = List;
     NetJob::Ptr jobPtr;
     QByteArray response;
 };