pollymc/logic/lists/MinecraftVersionList.cpp

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/* Copyright 2013 Andrew Okin
*
* 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 "MinecraftVersionList.h"
#include <MultiMC.h>
#include <QDebug>
#include <QtXml>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonArray>
#include <QJsonValue>
#include <QJsonParseError>
#include <QtAlgorithms>
#include <QtNetwork>
#define MCVLIST_URLBASE "http://s3.amazonaws.com/Minecraft.Download/versions/"
#define ASSETS_URLBASE "http://assets.minecraft.net/"
#define MCN_URLBASE "http://sonicrules.org/mcnweb.py"
MinecraftVersionList::MinecraftVersionList(QObject *parent) :
BaseVersionList(parent)
{
}
Task *MinecraftVersionList::getLoadTask()
{
return new MCVListLoadTask(this);
}
bool MinecraftVersionList::isLoaded()
{
return m_loaded;
}
const BaseVersionPtr MinecraftVersionList::at(int i) const
{
return m_vlist.at(i);
}
int MinecraftVersionList::count() const
{
return m_vlist.count();
}
bool cmpVersions(BaseVersionPtr first, BaseVersionPtr second)
{
auto left = first.dynamicCast<MinecraftVersion>();
auto right = second.dynamicCast<MinecraftVersion>();
return left->timestamp > right->timestamp;
}
void MinecraftVersionList::sort()
{
beginResetModel();
qSort(m_vlist.begin(), m_vlist.end(), cmpVersions);
endResetModel();
}
BaseVersionPtr MinecraftVersionList::getLatestStable() const
{
for (int i = 0; i < m_vlist.length(); i++)
{
auto ver = m_vlist.at(i).dynamicCast<MinecraftVersion>();
if (ver->is_latest && !ver->is_snapshot)
{
return m_vlist.at(i);
}
}
return BaseVersionPtr();
}
void MinecraftVersionList::updateListData(QList<BaseVersionPtr > versions)
{
beginResetModel();
m_vlist = versions;
m_loaded = true;
endResetModel();
// NOW SORT!!
sort();
}
inline QDomElement getDomElementByTagName(QDomElement parent, QString tagname)
{
QDomNodeList elementList = parent.elementsByTagName(tagname);
if (elementList.count())
return elementList.at(0).toElement();
else
return QDomElement();
}
inline QDateTime timeFromS3Time(QString str)
{
return QDateTime::fromString(str, Qt::ISODate);
}
MCVListLoadTask::MCVListLoadTask(MinecraftVersionList *vlist)
{
m_list = vlist;
m_currentStable = NULL;
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vlistReply = nullptr;
legacyWhitelist.insert("1.5.2");
legacyWhitelist.insert("1.5.1");
legacyWhitelist.insert("1.5");
legacyWhitelist.insert("1.4.7");
legacyWhitelist.insert("1.4.6");
legacyWhitelist.insert("1.4.5");
legacyWhitelist.insert("1.4.4");
legacyWhitelist.insert("1.4.2");
legacyWhitelist.insert("1.3.2");
legacyWhitelist.insert("1.3.1");
legacyWhitelist.insert("1.2.5");
legacyWhitelist.insert("1.2.4");
legacyWhitelist.insert("1.2.3");
legacyWhitelist.insert("1.2.2");
legacyWhitelist.insert("1.2.1");
legacyWhitelist.insert("1.1");
legacyWhitelist.insert("1.0.1");
legacyWhitelist.insert("1.0");
}
MCVListLoadTask::~MCVListLoadTask()
{
}
void MCVListLoadTask::executeTask()
{
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setStatus("Loading instance version list...");
auto worker = MMC->qnam();
vlistReply = worker->get(QNetworkRequest(QUrl(QString(MCVLIST_URLBASE) + "versions.json")));
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connect(vlistReply, SIGNAL(finished()), this, SLOT(list_downloaded()));
}
void MCVListLoadTask::list_downloaded()
{
if(vlistReply->error() != QNetworkReply::QNetworkReply::NoError)
{
vlistReply->deleteLater();
emitFailed("Failed to load Minecraft main version list" + vlistReply->errorString());
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return;
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}
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QJsonParseError jsonError;
QJsonDocument jsonDoc = QJsonDocument::fromJson(vlistReply->readAll(), &jsonError);
vlistReply->deleteLater();
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if (jsonError.error != QJsonParseError::NoError)
{
emitFailed("Error parsing version list JSON:" + jsonError.errorString());
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return;
}
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if(!jsonDoc.isObject())
{
emitFailed("Error parsing version list JSON: jsonDoc is not an object");
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return;
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}
QJsonObject root = jsonDoc.object();
// Get the ID of the latest release and the latest snapshot.
if(!root.value("latest").isObject())
{
emitFailed("Error parsing version list JSON: version list is missing 'latest' object");
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return;
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}
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QJsonObject latest = root.value("latest").toObject();
QString latestReleaseID = latest.value("release").toString("");
QString latestSnapshotID = latest.value("snapshot").toString("");
if(latestReleaseID.isEmpty())
{
emitFailed("Error parsing version list JSON: latest release field is missing");
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return;
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}
if(latestSnapshotID.isEmpty())
{
emitFailed("Error parsing version list JSON: latest snapshot field is missing");
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return;
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}
// Now, get the array of versions.
if(!root.value("versions").isArray())
{
emitFailed("Error parsing version list JSON: version list object is missing 'versions' array");
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return;
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}
QJsonArray versions = root.value("versions").toArray();
QList<BaseVersionPtr > tempList;
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for (int i = 0; i < versions.count(); i++)
{
bool is_snapshot = false;
bool is_latest = false;
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// Load the version info.
if(!versions[i].isObject())
{
//FIXME: log this somewhere
continue;
}
QJsonObject version = versions[i].toObject();
QString versionID = version.value("id").toString("");
QString versionTimeStr = version.value("releaseTime").toString("");
QString versionTypeStr = version.value("type").toString("");
if(versionID.isEmpty() || versionTimeStr.isEmpty() || versionTypeStr.isEmpty())
{
//FIXME: log this somewhere
continue;
}
// Parse the timestamp.
QDateTime versionTime = timeFromS3Time(versionTimeStr);
if(!versionTime.isValid())
{
//FIXME: log this somewhere
continue;
}
// Parse the type.
MinecraftVersion::VersionType versionType;
// OneSix or Legacy. use filter to determine type
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if (versionTypeStr == "release")
{
versionType = legacyWhitelist.contains(versionID)?MinecraftVersion::Legacy:MinecraftVersion::OneSix;
is_latest = (versionID == latestReleaseID);
is_snapshot = false;
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}
else if(versionTypeStr == "snapshot") // It's a snapshot... yay
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{
versionType = legacyWhitelist.contains(versionID)?MinecraftVersion::Legacy:MinecraftVersion::OneSix;
is_latest = (versionID == latestSnapshotID);
is_snapshot = true;
}
else if(versionTypeStr == "old_alpha")
{
versionType = MinecraftVersion::Nostalgia;
is_latest = false;
is_snapshot = false;
}
else if(versionTypeStr == "old_beta")
{
versionType = MinecraftVersion::Legacy;
is_latest = false;
is_snapshot = false;
}
else
{
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//FIXME: log this somewhere
continue;
}
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// Get the download URL.
QString dlUrl = QString(MCVLIST_URLBASE) + versionID + "/";
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// Now, we construct the version object and add it to the list.
QSharedPointer<MinecraftVersion> mcVersion(new MinecraftVersion());
mcVersion->m_name = mcVersion->m_descriptor = versionID;
mcVersion->timestamp = versionTime.toMSecsSinceEpoch();
mcVersion->download_url = dlUrl;
mcVersion->is_latest = is_latest;
mcVersion->is_snapshot = is_snapshot;
mcVersion->type = versionType;
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tempList.append(mcVersion);
}
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m_list->updateListData(tempList);
emitSucceeded();
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return;
}