Cleanup downloaders

Signed-off-by: Trial97 <alexandru.tripon97@gmail.com>

launcher/java/JavaRuntime.cpp

@@ -0,0 +1,56 @@
+#include "java/JavaRuntime.h"
+
+#include <memory>
+
+#include "Json.h"
+#include "java/JavaVersion.h"
+#include "minecraft/ParseUtils.h"
+
+namespace JavaRuntime {
+
+DownloadType parseDownloadType(QString javaDownload)
+{
+    if (javaDownload == "manifest")
+        return DownloadType::Manifest;
+    // if (javaDownload == "archive")
+    return DownloadType::Archive;
+}
+QString downloadTypeToString(DownloadType javaDownload)
+{
+    switch (javaDownload) {
+        case DownloadType::Manifest:
+            return "manifest";
+        case DownloadType::Archive:
+            return "archive";
+    }
+}
+MetaPtr parseJavaMeta(const QJsonObject& in)
+{
+    auto meta = std::make_shared<Meta>();
+
+    meta->name = Json::ensureString(in, "name", "");
+    meta->vendor = Json::ensureString(in, "vendor", "");
+    meta->url = Json::ensureString(in, "url", "");
+    meta->releaseTime = timeFromS3Time(Json::ensureString(in, "releaseTime", ""));
+    meta->recommended = Json::ensureBoolean(in, "recommended", false);
+    meta->downloadType = parseDownloadType(Json::ensureString(in, "downloadType", ""));
+    meta->packageType = Json::ensureString(in, "packageType", "");
+
+    if (in.contains("checksum")) {
+        auto obj = Json::requireObject(in, "checksum");
+        meta->checksumHash = Json::ensureString(obj, "hash", "");
+        meta->checksumType = Json::ensureString(obj, "type", "");
+    }
+
+    if (in.contains("version")) {
+        auto obj = Json::requireObject(in, "checksum");
+        auto name = Json::ensureString(obj, "name", "");
+        auto major = Json::ensureInteger(obj, "major", 0);
+        auto minor = Json::ensureInteger(obj, "minor", 0);
+        auto security = Json::ensureInteger(obj, "security", 0);
+        auto build = Json::ensureInteger(obj, "build", 0);
+        meta->version = JavaVersion(major, minor, security, build, name);
+    }
+    return meta;
+}
+}  // namespace JavaRuntime