1 files changed, 234 insertions, 0 deletions
diff --git a/launcher/ui/pages/modplatform/ModModel.cpp b/launcher/ui/pages/modplatform/ModModel.cpp
new file mode 100644
index 00000000..01b5d247
--- /dev/null
+++ b/launcher/ui/pages/modplatform/ModModel.cpp
@@ -0,0 +1,234 @@
+#include "ModModel.h"
+
+#include "BuildConfig.h"
+#include "Json.h"
+#include "minecraft/MinecraftInstance.h"
+#include "minecraft/PackProfile.h"
+#include "ui/dialogs/ModDownloadDialog.h"
+
+#include <QMessageBox>
+
+namespace ModPlatform {
+
+ListModel::ListModel(ModPage* parent) : QAbstractListModel(parent), m_parent(parent) {}
+
+auto ListModel::debugName() const -> QString
+{
+    return m_parent->debugName();
+}
+
+/******** Make data requests ********/
+
+void ListModel::fetchMore(const QModelIndex& parent)
+{
+    if (parent.isValid()) return;
+    if (nextSearchOffset == 0) {
+        qWarning() << "fetchMore with 0 offset is wrong...";
+        return;
+    }
+    performPaginatedSearch();
+}
+
+auto ListModel::data(const QModelIndex& index, int role) const -> QVariant
+{
+    int pos = index.row();
+    if (pos >= modpacks.size() || pos < 0 || !index.isValid()) { return QString("INVALID INDEX %1").arg(pos); }
+
+    ModPlatform::IndexedPack pack = modpacks.at(pos);
+    if (role == Qt::DisplayRole) {
+        return pack.name;
+    } else if (role == Qt::ToolTipRole) {
+        if (pack.description.length() > 100) {
+            // some magic to prevent to long tooltips and replace html linebreaks
+            QString edit = pack.description.left(97);
+            edit = edit.left(edit.lastIndexOf("<br>")).left(edit.lastIndexOf(" ")).append("...");
+            return edit;
+        }
+        return pack.description;
+    } else if (role == Qt::DecorationRole) {
+        if (m_logoMap.contains(pack.logoName)) { return (m_logoMap.value(pack.logoName)); }
+        QIcon icon = APPLICATION->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 {};
+}
+
+void ListModel::requestModVersions(ModPlatform::IndexedPack const& current)
+{
+    m_parent->apiProvider()->getVersions(this,
+            { current.addonId.toString(), getMineVersions(), hasFabric() ? ModAPI::ModLoaderType::Fabric : ModAPI::ModLoaderType::Forge });
+}
+
+void ListModel::performPaginatedSearch()
+{
+    m_parent->apiProvider()->searchMods(this,
+            { nextSearchOffset, currentSearchTerm, getSorts()[currentSort], hasFabric() ? ModAPI::Fabric : ModAPI::Forge, getMineVersions().at(0) });
+}
+
+void ListModel::searchWithTerm(const QString& term, const int sort)
+{
+    if (currentSearchTerm == term && currentSearchTerm.isNull() == term.isNull() && currentSort == sort) { return; }
+    currentSearchTerm = term;
+    currentSort = sort;
+    if (jobPtr) {
+        jobPtr->abort();
+        searchState = ResetRequested;
+        return;
+    } else {
+        beginResetModel();
+        modpacks.clear();
+        endResetModel();
+        searchState = None;
+    }
+    nextSearchOffset = 0;
+    performPaginatedSearch();
+}
+
+void ListModel::getLogo(const QString& logo, const QString& logoUrl, LogoCallback callback)
+{
+    if (m_logoMap.contains(logo)) {
+        callback(APPLICATION->metacache()
+                     ->resolveEntry(m_parent->metaEntryBase(), QString("logos/%1").arg(logo.section(".", 0, 0)))
+                     ->getFullPath());
+    } else {
+        requestLogo(logo, logoUrl);
+    }
+}
+
+void ListModel::requestLogo(QString logo, QString url)
+{
+    if (m_loadingLogos.contains(logo) || m_failedLogos.contains(logo)) { return; }
+
+    MetaEntryPtr entry =
+        APPLICATION->metacache()->resolveEntry(m_parent->metaEntryBase(), QString("logos/%1").arg(logo.section(".", 0, 0)));
+    auto job = new NetJob(QString("%1 Icon Download %2").arg(m_parent->debugName()).arg(logo), APPLICATION->network());
+    job->addNetAction(Net::Download::makeCached(QUrl(url), entry));
+
+    auto fullPath = entry->getFullPath();
+    QObject::connect(job, &NetJob::succeeded, this, [this, logo, fullPath, job] {
+        job->deleteLater();
+        emit logoLoaded(logo, QIcon(fullPath));
+        if (waitingCallbacks.contains(logo)) { waitingCallbacks.value(logo)(fullPath); }
+    });
+
+    QObject::connect(job, &NetJob::failed, this, [this, logo, job] {
+        job->deleteLater();
+        emit logoFailed(logo);
+    });
+
+    job->start();
+    m_loadingLogos.append(logo);
+}
+
+/******** Request callbacks ********/
+
+void ListModel::logoLoaded(QString logo, QIcon out)
+{
+    m_loadingLogos.removeAll(logo);
+    m_logoMap.insert(logo, 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 ListModel::logoFailed(QString logo)
+{
+    m_failedLogos.append(logo);
+    m_loadingLogos.removeAll(logo);
+}
+
+void ListModel::searchRequestFinished(QJsonDocument& doc)
+{
+    jobPtr.reset();
+
+    QList<ModPlatform::IndexedPack> newList;
+    auto packs = documentToArray(doc);
+
+    for (auto packRaw : packs) {
+        auto packObj = packRaw.toObject();
+
+        ModPlatform::IndexedPack pack;
+        try {
+            loadIndexedPack(pack, packObj);
+            newList.append(pack);
+        } catch (const JSONValidationError& e) {
+            qWarning() << "Error while loading mod from " << m_parent->debugName() << ": " << e.cause();
+            continue;
+        }
+    }
+
+    if (packs.size() < 25) {
+        searchState = Finished;
+    } else {
+        nextSearchOffset += 25;
+        searchState = CanPossiblyFetchMore;
+    }
+
+    beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
+    modpacks.append(newList);
+    endInsertRows();
+}
+
+void ListModel::searchRequestFailed(QString reason)
+{
+    if (jobPtr->first()->m_reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt() == 409) {
+        // 409 Gone, notify user to update
+        QMessageBox::critical(nullptr, tr("Error"),
+                              //: %1 refers to the launcher itself
+                              QString("%1 %2").arg(m_parent->displayName()).arg(tr("API version too old!\nPlease update %1!").arg(BuildConfig.LAUNCHER_NAME)));
+        // self-destruct
+        (dynamic_cast<ModDownloadDialog*>((dynamic_cast<ModPage*>(parent()))->parentWidget()))->reject();
+    }
+    jobPtr.reset();
+
+    if (searchState == ResetRequested) {
+        beginResetModel();
+        modpacks.clear();
+        endResetModel();
+
+        nextSearchOffset = 0;
+        performPaginatedSearch();
+    } else {
+        searchState = Finished;
+    }
+}
+
+void ListModel::versionRequestSucceeded(QJsonDocument doc, QString addonId)
+{
+    auto& current = m_parent->getCurrent();
+    if (addonId != current.addonId) { return; }
+
+    QJsonArray arr = doc.array();
+    try {
+        loadIndexedPackVersions(current, arr);
+    } catch (const JSONValidationError& e) {
+        qDebug() << doc;
+        qWarning() << "Error while reading " << debugName() << " mod version: " << e.cause();
+    }
+
+    m_parent->updateModVersions();
+}
+
+}  // namespace ModPlatform
+
+/******** Helpers ********/
+auto ModPlatform::ListModel::hasFabric() const -> bool
+{
+    return !(dynamic_cast<MinecraftInstance*>((dynamic_cast<ModPage*>(parent()))->m_instance))
+                ->getPackProfile()
+                ->getComponentVersion("net.fabricmc.fabric-loader")
+                .isEmpty();
+}
+
+auto ModPlatform::ListModel::getMineVersions() const -> QList<QString>
+{
+    return { (dynamic_cast<MinecraftInstance*>((dynamic_cast<ModPage*>(parent()))->m_instance))
+                 ->getPackProfile()
+                 ->getComponentVersion("net.minecraft") };
+}