GH-469 Implement support for importing and searching for Technic Platform and Solder modpacks

This does not support any custom modpack.jar for 1.6 or newer, it simply uses standard Forge then.
Supports Forge and Fabric, and JAR mods for 1.5 and older.

1 files changed, 223 insertions, 0 deletions

diff --git a/application/pages/modplatform/technic/TechnicModel.cpp b/application/pages/modplatform/technic/TechnicModel.cpp
new file mode 100644
index 00000000..b3d36bac
--- /dev/null
+++ b/application/pages/modplatform/technic/TechnicModel.cpp
@@ -0,0 +1,223 @@
+/* Copyright 2020 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "TechnicModel.h"
+#include "Env.h"
+#include "MultiMC.h"
+
+#include <QIcon>
+
+
+Technic::ListModel::ListModel(QObject *parent) : QAbstractListModel(parent)
+{
+}
+
+Technic::ListModel::~ListModel()
+{
+}
+
+QVariant Technic::ListModel::data(const QModelIndex& index, int role) const
+{
+    int pos = index.row();
+    if(pos >= modpacks.size() || pos < 0 || !index.isValid())
+    {
+        return QString("INVALID INDEX %1").arg(pos);
+    }
+
+    Modpack pack = modpacks.at(pos);
+    if(role == Qt::DisplayRole)
+    {
+        return pack.name;
+    }
+    else if(role == Qt::DecorationRole)
+    {
+        if(m_logoMap.contains(pack.logoName))
+        {
+            return (m_logoMap.value(pack.logoName));
+        }
+        QIcon icon = MMC->getThemedIcon("screenshot-placeholder");
+        ((ListModel *)this)->requestLogo(pack.logoName, pack.logoUrl);
+        return icon;
+    }
+    else if(role == Qt::UserRole)
+    {
+        QVariant v;
+        v.setValue(pack);
+        return v;
+    }
+    return QVariant();
+}
+
+int Technic::ListModel::columnCount(const QModelIndex&) const
+{
+    return 1;
+}
+
+int Technic::ListModel::rowCount(const QModelIndex&) const
+{
+    return modpacks.size();
+}
+
+void Technic::ListModel::searchWithTerm(const QString& term)
+{
+    if(currentSearchTerm == term) {
+        return;
+    }
+    currentSearchTerm = term;
+    if(jobPtr) {
+        jobPtr->abort();
+        searchState = ResetRequested;
+        return;
+    }
+    else {
+        beginResetModel();
+        modpacks.clear();
+        endResetModel();
+        searchState = None;
+    }
+    performSearch();
+}
+
+void Technic::ListModel::performSearch()
+{
+    NetJob *netJob = new NetJob("Technic::Search");
+    auto searchUrl = QString(
+        "https://api.technicpack.net/search?build=multimc&q=%1"
+    ).arg(currentSearchTerm);
+    netJob->addNetAction(Net::Download::makeByteArray(QUrl(searchUrl), &response));
+    jobPtr = netJob;
+    jobPtr->start();
+    QObject::connect(netJob, &NetJob::succeeded, this, &ListModel::searchRequestFinished);
+    QObject::connect(netJob, &NetJob::failed, this, &ListModel::searchRequestFailed);
+}
+
+void Technic::ListModel::searchRequestFinished()
+{
+    jobPtr.reset();
+
+    QJsonParseError parse_error;
+    QJsonDocument doc = QJsonDocument::fromJson(response, &parse_error);
+    if(parse_error.error != QJsonParseError::NoError)
+    {
+        qWarning() << "Error while parsing JSON response from Technic at " << parse_error.offset << " reason: " << parse_error.errorString();
+        qWarning() << response;
+        return;
+    }
+
+    QList<Modpack> newList;
+    auto objs = doc["modpacks"].toArray();
+    for (auto technicPack: objs) {
+        Modpack pack;
+        auto technicPackObject = technicPack.toObject();
+        pack.name = technicPackObject["name"].toString();
+        pack.slug = technicPackObject["slug"].toString();
+        if (pack.slug == "vanilla")
+            continue;
+        if (technicPackObject["iconUrl"].isString())
+        {
+            pack.logoUrl = technicPackObject["iconUrl"].toString();
+            pack.logoName = pack.logoUrl.section(QLatin1Char('/'), -1).section(QLatin1Char('.'), 0, 0);
+        }
+        else
+        {
+            pack.logoUrl = "null";
+            pack.logoName = "null";
+        }
+        pack.broken = false;
+        newList.append(pack);
+    }
+    searchState = Finished;
+    beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
+    modpacks.append(newList);
+    endInsertRows();
+}
+
+void Technic::ListModel::getLogo(const QString& logo, const QString& logoUrl, Technic::LogoCallback callback)
+{
+    if(m_logoMap.contains(logo))
+    {
+        callback(ENV.metacache()->resolveEntry("TechnicPacks", QString("logos/%1").arg(logo))->getFullPath());
+    }
+    else
+    {
+        requestLogo(logo, logoUrl);
+    }
+}
+
+void Technic::ListModel::searchRequestFailed()
+{
+    jobPtr.reset();
+
+    if(searchState == ResetRequested)
+    {
+        beginResetModel();
+        modpacks.clear();
+        endResetModel();
+
+        performSearch();
+    }
+    else
+    {
+        searchState = Finished;
+    }
+}
+
+
+void Technic::ListModel::logoLoaded(QString logo, QString out)
+{
+    m_loadingLogos.removeAll(logo);
+    m_logoMap.insert(logo, QIcon(out));
+    for(int i = 0; i < modpacks.size(); i++)
+    {
+        if(modpacks[i].logoName == logo)
+        {
+            emit dataChanged(createIndex(i, 0), createIndex(i, 0), {Qt::DecorationRole});
+        }
+    }
+}
+
+void Technic::ListModel::logoFailed(QString logo)
+{
+    m_failedLogos.append(logo);
+    m_loadingLogos.removeAll(logo);
+}
+
+void Technic::ListModel::requestLogo(QString logo, QString url)
+{
+    if(m_loadingLogos.contains(logo) || m_failedLogos.contains(logo) || logo == "null")
+    {
+        return;
+    }
+
+    MetaEntryPtr entry = ENV.metacache()->resolveEntry("TechnicPacks", QString("logos/%1").arg(logo));
+    NetJob *job = new NetJob(QString("Technic Icon Download %1").arg(logo));
+    job->addNetAction(Net::Download::makeCached(QUrl(url), entry));
+
+    auto fullPath = entry->getFullPath();
+
+    QObject::connect(job, &NetJob::succeeded, this, [this, logo, fullPath]
+    {
+        logoLoaded(logo, fullPath);
+    });
+
+    QObject::connect(job, &NetJob::failed, this, [this, logo]
+    {
+        logoFailed(logo);
+    });
+
+    job->start();
+
+    m_loadingLogos.append(logo);
+}