1 files changed, 245 insertions, 0 deletions
diff --git a/launcher/meta/VersionList.cpp b/launcher/meta/VersionList.cpp
new file mode 100644
index 00000000..607007eb
--- /dev/null
+++ b/launcher/meta/VersionList.cpp
@@ -0,0 +1,245 @@
+/* Copyright 2015-2021 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * 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 "VersionList.h"
+
+#include <QDateTime>
+
+#include "Version.h"
+#include "JsonFormat.h"
+#include "Version.h"
+
+namespace Meta
+{
+VersionList::VersionList(const QString &uid, QObject *parent)
+    : BaseVersionList(parent), m_uid(uid)
+{
+    setObjectName("Version list: " + uid);
+}
+
+shared_qobject_ptr<Task> VersionList::getLoadTask()
+{
+    load(Net::Mode::Online);
+    return getCurrentTask();
+}
+
+bool VersionList::isLoaded()
+{
+    return BaseEntity::isLoaded();
+}
+
+const BaseVersionPtr VersionList::at(int i) const
+{
+    return m_versions.at(i);
+}
+int VersionList::count() const
+{
+    return m_versions.size();
+}
+
+void VersionList::sortVersions()
+{
+    beginResetModel();
+    std::sort(m_versions.begin(), m_versions.end(), [](const VersionPtr &a, const VersionPtr &b)
+    {
+        return *a.get() < *b.get();
+    });
+    endResetModel();
+}
+
+QVariant VersionList::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid() || index.row() < 0 || index.row() >= m_versions.size() || index.parent().isValid())
+    {
+        return QVariant();
+    }
+
+    VersionPtr version = m_versions.at(index.row());
+
+    switch (role)
+    {
+    case VersionPointerRole: return QVariant::fromValue(std::dynamic_pointer_cast<BaseVersion>(version));
+    case VersionRole:
+    case VersionIdRole:
+        return version->version();
+    case ParentVersionRole:
+    {
+        // FIXME: HACK: this should be generic and be replaced by something else. Anything that is a hard 'equals' dep is a 'parent uid'.
+        auto & reqs = version->requires();
+        auto iter = std::find_if(reqs.begin(), reqs.end(), [](const Require & req)
+        {
+            return req.uid == "net.minecraft";
+        });
+        if (iter != reqs.end())
+        {
+            return (*iter).equalsVersion;
+        }
+        return QVariant();
+    }
+    case TypeRole: return version->type();
+
+    case UidRole: return version->uid();
+    case TimeRole: return version->time();
+    case RequiresRole: return QVariant::fromValue(version->requires());
+    case SortRole: return version->rawTime();
+    case VersionPtrRole: return QVariant::fromValue(version);
+    case RecommendedRole: return version->isRecommended();
+    // FIXME: this should be determined in whatever view/proxy is used...
+    // case LatestRole: return version == getLatestStable();
+    default: return QVariant();
+    }
+}
+
+BaseVersionList::RoleList VersionList::providesRoles() const
+{
+    return {VersionPointerRole, VersionRole, VersionIdRole, ParentVersionRole,
+                TypeRole, UidRole, TimeRole, RequiresRole, SortRole,
+                RecommendedRole, LatestRole, VersionPtrRole};
+}
+
+QHash<int, QByteArray> VersionList::roleNames() const
+{
+    QHash<int, QByteArray> roles = BaseVersionList::roleNames();
+    roles.insert(UidRole, "uid");
+    roles.insert(TimeRole, "time");
+    roles.insert(SortRole, "sort");
+    roles.insert(RequiresRole, "requires");
+    return roles;
+}
+
+QString VersionList::localFilename() const
+{
+    return m_uid + "/index.json";
+}
+
+QString VersionList::humanReadable() const
+{
+    return m_name.isEmpty() ? m_uid : m_name;
+}
+
+VersionPtr VersionList::getVersion(const QString &version)
+{
+    VersionPtr out = m_lookup.value(version, nullptr);
+    if(!out)
+    {
+        out = std::make_shared<Version>(m_uid, version);
+        m_lookup[version] = out;
+    }
+    return out;
+}
+
+void VersionList::setName(const QString &name)
+{
+    m_name = name;
+    emit nameChanged(name);
+}
+
+void VersionList::setVersions(const QVector<VersionPtr> &versions)
+{
+    beginResetModel();
+    m_versions = versions;
+    std::sort(m_versions.begin(), m_versions.end(), [](const VersionPtr &a, const VersionPtr &b)
+    {
+        return a->rawTime() > b->rawTime();
+    });
+    for (int i = 0; i < m_versions.size(); ++i)
+    {
+        m_lookup.insert(m_versions.at(i)->version(), m_versions.at(i));
+        setupAddedVersion(i, m_versions.at(i));
+    }
+
+    // FIXME: this is dumb, we have 'recommended' as part of the metadata already...
+    auto recommendedIt = std::find_if(m_versions.constBegin(), m_versions.constEnd(), [](const VersionPtr &ptr) { return ptr->type() == "release"; });
+    m_recommended = recommendedIt == m_versions.constEnd() ? nullptr : *recommendedIt;
+    endResetModel();
+}
+
+void VersionList::parse(const QJsonObject& obj)
+{
+    parseVersionList(obj, this);
+}
+
+// FIXME: this is dumb, we have 'recommended' as part of the metadata already...
+static const Meta::VersionPtr &getBetterVersion(const Meta::VersionPtr &a, const Meta::VersionPtr &b)
+{
+    if(!a)
+        return b;
+    if(!b)
+        return a;
+    if(a->type() == b->type())
+    {
+        // newer of same type wins
+        return (a->rawTime() > b->rawTime() ? a : b);
+    }
+    // 'release' type wins
+    return (a->type() == "release" ? a : b);
+}
+
+void VersionList::mergeFromIndex(const VersionListPtr &other)
+{
+    if (m_name != other->m_name)
+    {
+        setName(other->m_name);
+    }
+}
+
+void VersionList::merge(const VersionListPtr &other)
+{
+    if (m_name != other->m_name)
+    {
+        setName(other->m_name);
+    }
+
+    // TODO: do not reset the whole model. maybe?
+    beginResetModel();
+    m_versions.clear();
+    if(other->m_versions.isEmpty())
+    {
+        qWarning() << "Empty list loaded ...";
+    }
+    for (const VersionPtr &version : other->m_versions)
+    {
+        // we already have the version. merge the contents
+        if (m_lookup.contains(version->version()))
+        {
+            m_lookup.value(version->version())->mergeFromList(version);
+        }
+        else
+        {
+            m_lookup.insert(version->uid(), version);
+        }
+        // connect it.
+        setupAddedVersion(m_versions.size(), version);
+        m_versions.append(version);
+        m_recommended = getBetterVersion(m_recommended, version);
+    }
+    endResetModel();
+}
+
+void VersionList::setupAddedVersion(const int row, const VersionPtr &version)
+{
+    // FIXME: do not disconnect from everythin, disconnect only the lambdas here
+    version->disconnect();
+    connect(version.get(), &Version::requiresChanged, this, [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << RequiresRole); });
+    connect(version.get(), &Version::timeChanged, this, [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << TimeRole << SortRole); });
+    connect(version.get(), &Version::typeChanged, this, [this, row]() { emit dataChanged(index(row), index(row), QVector<int>() << TypeRole); });
+}
+
+BaseVersionPtr VersionList::getRecommended() const
+{
+    return m_recommended;
+}
+
+}