6 files changed, 416 insertions, 0 deletions
diff --git a/launcher/modplatform/flame/FileResolvingTask.cpp b/launcher/modplatform/flame/FileResolvingTask.cpp
new file mode 100644
index 00000000..295574f0
--- /dev/null
+++ b/launcher/modplatform/flame/FileResolvingTask.cpp
@@ -0,0 +1,63 @@
+#include "FileResolvingTask.h"
+#include "Json.h"
+
+namespace {
+    const char * metabase = "https://cursemeta.dries007.net";
+}
+
+Flame::FileResolvingTask::FileResolvingTask(Flame::Manifest& toProcess)
+    : m_toProcess(toProcess)
+{
+}
+
+void Flame::FileResolvingTask::executeTask()
+{
+    setStatus(tr("Resolving mod IDs..."));
+    setProgress(0, m_toProcess.files.size());
+    m_dljob.reset(new NetJob("Mod id resolver"));
+    results.resize(m_toProcess.files.size());
+    int index = 0;
+    for(auto & file: m_toProcess.files)
+    {
+        auto projectIdStr = QString::number(file.projectId);
+        auto fileIdStr = QString::number(file.fileId);
+        QString metaurl = QString("%1/%2/%3.json").arg(metabase, projectIdStr, fileIdStr);
+        auto dl = Net::Download::makeByteArray(QUrl(metaurl), &results[index]);
+        m_dljob->addNetAction(dl);
+        index ++;
+    }
+    connect(m_dljob.get(), &NetJob::finished, this, &Flame::FileResolvingTask::netJobFinished);
+    m_dljob->start();
+}
+
+void Flame::FileResolvingTask::netJobFinished()
+{
+    bool failed = false;
+    int index = 0;
+    for(auto & bytes: results)
+    {
+        auto & out = m_toProcess.files[index];
+        try
+        {
+            failed &= (!out.parseFromBytes(bytes));
+        }
+        catch (const JSONValidationError &e)
+        {
+
+            qCritical() << "Resolving of" << out.projectId << out.fileId << "failed because of a parsing error:";
+            qCritical() << e.cause();
+            qCritical() << "JSON:";
+            qCritical() << bytes;
+            failed = true;
+        }
+        index++;
+    }
+    if(!failed)
+    {
+        emitSucceeded();
+    }
+    else
+    {
+        emitFailed(tr("Some mod ID resolving tasks failed."));
+    }
+}
diff --git a/launcher/modplatform/flame/FileResolvingTask.h b/launcher/modplatform/flame/FileResolvingTask.h
new file mode 100644
index 00000000..78a38fcb
--- /dev/null
+++ b/launcher/modplatform/flame/FileResolvingTask.h
@@ -0,0 +1,32 @@
+#pragma once
+
+#include "tasks/Task.h"
+#include "net/NetJob.h"
+#include "PackManifest.h"
+
+namespace Flame
+{
+class FileResolvingTask : public Task
+{
+    Q_OBJECT
+public:
+    explicit FileResolvingTask(Flame::Manifest &toProcess);
+    virtual ~FileResolvingTask() {};
+
+    const Flame::Manifest &getResults() const
+    {
+        return m_toProcess;
+    }
+
+protected:
+    virtual void executeTask() override;
+
+protected slots:
+    void netJobFinished();
+
+private: /* data */
+    Flame::Manifest m_toProcess;
+    QVector<QByteArray> results;
+    NetJobPtr m_dljob;
+};
+}
diff --git a/launcher/modplatform/flame/FlamePackIndex.cpp b/launcher/modplatform/flame/FlamePackIndex.cpp
new file mode 100644
index 00000000..3d8ea22a
--- /dev/null
+++ b/launcher/modplatform/flame/FlamePackIndex.cpp
@@ -0,0 +1,92 @@
+#include "FlamePackIndex.h"
+
+#include "Json.h"
+
+void Flame::loadIndexedPack(Flame::IndexedPack & pack, QJsonObject & obj)
+{
+    pack.addonId = Json::requireInteger(obj, "id");
+    pack.name = Json::requireString(obj, "name");
+    pack.websiteUrl = Json::ensureString(obj, "websiteUrl", "");
+    pack.description = Json::ensureString(obj, "summary", "");
+
+    bool thumbnailFound = false;
+    auto attachments = Json::requireArray(obj, "attachments");
+    for(auto attachmentRaw: attachments) {
+        auto attachmentObj = Json::requireObject(attachmentRaw);
+        bool isDefault = attachmentObj.value("isDefault").toBool(false);
+        if(isDefault) {
+            thumbnailFound = true;
+            pack.logoName = Json::requireString(attachmentObj, "title");
+            pack.logoUrl = Json::requireString(attachmentObj, "thumbnailUrl");
+            break;
+        }
+    }
+
+    if(!thumbnailFound) {
+        throw JSONValidationError(QString("Pack without an icon, skipping: %1").arg(pack.name));
+    }
+
+    auto authors = Json::requireArray(obj, "authors");
+    for(auto authorIter: authors) {
+        auto author = Json::requireObject(authorIter);
+        Flame::ModpackAuthor packAuthor;
+        packAuthor.name = Json::requireString(author, "name");
+        packAuthor.url = Json::requireString(author, "url");
+        pack.authors.append(packAuthor);
+    }
+    int defaultFileId = Json::requireInteger(obj, "defaultFileId");
+
+    bool found = false;
+    // check if there are some files before adding the pack
+    auto files = Json::requireArray(obj, "latestFiles");
+    for(auto fileIter: files) {
+        auto file = Json::requireObject(fileIter);
+        int id = Json::requireInteger(file, "id");
+
+        // NOTE: for now, ignore everything that's not the default...
+        if(id != defaultFileId) {
+            continue;
+        }
+
+        auto versionArray = Json::requireArray(file, "gameVersion");
+        if(versionArray.size() < 1) {
+            continue;
+        }
+
+        found = true;
+        break;
+    }
+    if(!found) {
+        throw JSONValidationError(QString("Pack with no good file, skipping: %1").arg(pack.name));
+    }
+}
+
+void Flame::loadIndexedPackVersions(Flame::IndexedPack & pack, QJsonArray & arr)
+{
+    QVector<Flame::IndexedVersion> unsortedVersions;
+    for(auto versionIter: arr) {
+        auto version = Json::requireObject(versionIter);
+        Flame::IndexedVersion file; 
+
+        file.addonId = pack.addonId;
+        file.fileId = Json::requireInteger(version, "id");
+        auto versionArray = Json::requireArray(version, "gameVersion");
+        if(versionArray.size() < 1) {
+            continue;
+        }
+
+        // pick the latest version supported
+        file.mcVersion = versionArray[0].toString();
+        file.version = Json::requireString(version, "displayName");
+        file.downloadUrl = Json::requireString(version, "downloadUrl");
+        unsortedVersions.append(file);
+    }
+
+    auto orderSortPredicate = [](const IndexedVersion & a, const IndexedVersion & b) -> bool
+    {
+        return a.fileId > b.fileId;
+    };
+    std::sort(unsortedVersions.begin(), unsortedVersions.end(), orderSortPredicate);
+    pack.versions = unsortedVersions;
+    pack.versionsLoaded = true;
+}
diff --git a/launcher/modplatform/flame/FlamePackIndex.h b/launcher/modplatform/flame/FlamePackIndex.h
new file mode 100644
index 00000000..7ffa29c3
--- /dev/null
+++ b/launcher/modplatform/flame/FlamePackIndex.h
@@ -0,0 +1,41 @@
+#pragma once
+
+#include <QList>
+#include <QMetaType>
+#include <QString>
+#include <QVector>
+
+namespace Flame {
+
+struct ModpackAuthor {
+    QString name;
+    QString url;
+};
+
+struct IndexedVersion {
+    int addonId;
+    int fileId;
+    QString version;
+    QString mcVersion;
+    QString downloadUrl;
+};
+
+struct IndexedPack
+{
+    int addonId;
+    QString name;
+    QString description;
+    QList<ModpackAuthor> authors;
+    QString logoName;
+    QString logoUrl;
+    QString websiteUrl;
+
+    bool versionsLoaded = false;
+    QVector<IndexedVersion> versions;
+};
+
+void loadIndexedPack(IndexedPack & m, QJsonObject & obj);
+void loadIndexedPackVersions(IndexedPack & m, QJsonArray & arr);
+}
+
+Q_DECLARE_METATYPE(Flame::IndexedPack)
diff --git a/launcher/modplatform/flame/PackManifest.cpp b/launcher/modplatform/flame/PackManifest.cpp
new file mode 100644
index 00000000..b928fd16
--- /dev/null
+++ b/launcher/modplatform/flame/PackManifest.cpp
@@ -0,0 +1,126 @@
+#include "PackManifest.h"
+#include "Json.h"
+
+static void loadFileV1(Flame::File & f, QJsonObject & file)
+{
+    f.projectId = Json::requireInteger(file, "projectID");
+    f.fileId = Json::requireInteger(file, "fileID");
+    f.required = Json::ensureBoolean(file, QString("required"), true);
+}
+
+static void loadModloaderV1(Flame::Modloader & m, QJsonObject & modLoader)
+{
+    m.id = Json::requireString(modLoader, "id");
+    m.primary = Json::ensureBoolean(modLoader, QString("primary"), false);
+}
+
+static void loadMinecraftV1(Flame::Minecraft & m, QJsonObject & minecraft)
+{
+    m.version = Json::requireString(minecraft, "version");
+    // extra libraries... apparently only used for a custom Minecraft launcher in the 1.2.5 FTB retro pack
+    // intended use is likely hardcoded in the 'Flame' client, the manifest says nothing
+    m.libraries = Json::ensureString(minecraft, QString("libraries"), QString());
+    auto arr = Json::ensureArray(minecraft, "modLoaders", QJsonArray());
+    for (QJsonValueRef item : arr)
+    {
+        auto obj = Json::requireObject(item);
+        Flame::Modloader loader;
+        loadModloaderV1(loader, obj);
+        m.modLoaders.append(loader);
+    }
+}
+
+static void loadManifestV1(Flame::Manifest & m, QJsonObject & manifest)
+{
+    auto mc = Json::requireObject(manifest, "minecraft");
+    loadMinecraftV1(m.minecraft, mc);
+    m.name = Json::ensureString(manifest, QString("name"), "Unnamed");
+    m.version = Json::ensureString(manifest, QString("version"), QString());
+    m.author = Json::ensureString(manifest, QString("author"), "Anonymous Coward");
+    auto arr = Json::ensureArray(manifest, "files", QJsonArray());
+    for (QJsonValueRef item : arr)
+    {
+        auto obj = Json::requireObject(item);
+        Flame::File file;
+        loadFileV1(file, obj);
+        m.files.append(file);
+    }
+    m.overrides = Json::ensureString(manifest, "overrides", "overrides");
+}
+
+void Flame::loadManifest(Flame::Manifest & m, const QString &filepath)
+{
+    auto doc = Json::requireDocument(filepath);
+    auto obj = Json::requireObject(doc);
+    m.manifestType = Json::requireString(obj, "manifestType");
+    if(m.manifestType != "minecraftModpack")
+    {
+        throw JSONValidationError("Not a modpack manifest!");
+    }
+    m.manifestVersion = Json::requireInteger(obj, "manifestVersion");
+    if(m.manifestVersion != 1)
+    {
+        throw JSONValidationError(QString("Unknown manifest version (%1)").arg(m.manifestVersion));
+    }
+    loadManifestV1(m, obj);
+}
+
+bool Flame::File::parseFromBytes(const QByteArray& bytes)
+{
+    auto doc = Json::requireDocument(bytes);
+    auto obj = Json::requireObject(doc);
+    // result code signifies true failure.
+    if(obj.contains("code"))
+    {
+        qCritical() << "Resolving of" << projectId << fileId << "failed because of a negative result:";
+        qCritical() << bytes;
+        return false;
+    }
+    fileName = Json::requireString(obj, "FileNameOnDisk");
+    QString rawUrl = Json::requireString(obj, "DownloadURL");
+    url = QUrl(rawUrl, QUrl::TolerantMode);
+    if(!url.isValid())
+    {
+        throw JSONValidationError(QString("Invalid URL: %1").arg(rawUrl));
+    }
+    // This is a piece of a Flame project JSON pulled out into the file metadata (here) for convenience
+    // It is also optional
+    QJsonObject projObj = Json::ensureObject(obj, "_Project", {});
+    if(!projObj.isEmpty())
+    {
+        QString strType = Json::ensureString(projObj, "PackageType", "mod").toLower();
+        if(strType == "singlefile")
+        {
+            type = File::Type::SingleFile;
+        }
+        else if(strType == "ctoc")
+        {
+            type = File::Type::Ctoc;
+        }
+        else if(strType == "cmod2")
+        {
+            type = File::Type::Cmod2;
+        }
+        else if(strType == "mod")
+        {
+            type = File::Type::Mod;
+        }
+        else if(strType == "folder")
+        {
+            type = File::Type::Folder;
+        }
+        else if(strType == "modpack")
+        {
+            type = File::Type::Modpack;
+        }
+        else
+        {
+            qCritical() << "Resolving of" << projectId << fileId << "failed because of unknown file type:" << strType;
+            type = File::Type::Unknown;
+            return false;
+        }
+        targetFolder = Json::ensureString(projObj, "Path", "mods");
+    }
+    resolved = true;
+    return true;
+}
diff --git a/launcher/modplatform/flame/PackManifest.h b/launcher/modplatform/flame/PackManifest.h
new file mode 100644
index 00000000..02f39f0e
--- /dev/null
+++ b/launcher/modplatform/flame/PackManifest.h
@@ -0,0 +1,62 @@
+#pragma once
+
+#include <QString>
+#include <QVector>
+#include <QUrl>
+
+namespace Flame
+{
+struct File
+{
+    // NOTE: throws JSONValidationError
+    bool parseFromBytes(const QByteArray &bytes);
+
+    int projectId = 0;
+    int fileId = 0;
+    // NOTE: the opposite to 'optional'. This is at the time of writing unused.
+    bool required = true;
+
+    // our
+    bool resolved = false;
+    QString fileName;
+    QUrl url;
+    QString targetFolder = QLatin1Literal("mods");
+    enum class Type
+    {
+        Unknown,
+        Folder,
+        Ctoc,
+        SingleFile,
+        Cmod2,
+        Modpack,
+        Mod
+    } type = Type::Mod;
+};
+
+struct Modloader
+{
+    QString id;
+    bool primary = false;
+};
+
+struct Minecraft
+{
+    QString version;
+    QString libraries;
+    QVector<Flame::Modloader> modLoaders;
+};
+
+struct Manifest
+{
+    QString manifestType;
+    int manifestVersion = 0;
+    Flame::Minecraft minecraft;
+    QString name;
+    QString version;
+    QString author;
+    QVector<Flame::File> files;
+    QString overrides;
+};
+
+void loadManifest(Flame::Manifest & m, const QString &filepath);
+}