text: /*
   * Copyright 2020-2021 Jamie Mansfield <jmansfield@cadixdev.org>
   *
   * 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 "AtlListModel.h"
  
  #include <BuildConfig.h>
  #include <Application.h>
  #include <Json.h>
  
  namespace Atl {
  
  ListModel::ListModel(QObject *parent) : QAbstractListModel(parent)
  {
  }
  
  ListModel::~ListModel()
  {
  }
  
  int ListModel::rowCount(const QModelIndex &parent) const
  {
      return modpacks.size();
  }
  
  int ListModel::columnCount(const QModelIndex &parent) const
  {
      return 1;
  }
  
  QVariant ListModel::data(const QModelIndex &index, int role) const
  {
      int pos = index.row();
      if(pos >= modpacks.size() || pos < 0 || !index.isValid())
      {
          return QString("INVALID INDEX %1").arg(pos);
      }
  
      ATLauncher::IndexedPack pack = modpacks.at(pos);
      if(role == Qt::DisplayRole)
      {
          return pack.name;
      }
      else if (role == Qt::ToolTipRole)
      {
          return pack.name;
      }
      else if(role == Qt::DecorationRole)
      {
          if(m_logoMap.contains(pack.safeName))
          {
              return (m_logoMap.value(pack.safeName));
          }
          auto icon = APPLICATION->getThemedIcon("atlauncher-placeholder");
  
          auto url = QString(BuildConfig.ATL_DOWNLOAD_SERVER_URL + "launcher/images/%1.png").arg(pack.safeName.toLower());
          ((ListModel *)this)->requestLogo(pack.safeName, url);
  
          return icon;
      }
      else if(role == Qt::UserRole)
      {
          QVariant v;
          v.setValue(pack);
          return v;
      }
  
      return QVariant();
  }
  
  void ListModel::request()
  {
      beginResetModel();
      modpacks.clear();
      endResetModel();
  
      auto *netJob = new NetJob("Atl::Request");
      auto url = QString(BuildConfig.ATL_DOWNLOAD_SERVER_URL + "launcher/json/packsnew.json");
      netJob->addNetAction(Net::Download::makeByteArray(QUrl(url), &response));
      jobPtr = netJob;
      jobPtr->start(APPLICATION->network());
  
      QObject::connect(netJob, &NetJob::succeeded, this, &ListModel::requestFinished);
      QObject::connect(netJob, &NetJob::failed, this, &ListModel::requestFailed);
  }
  
  void ListModel::requestFinished()
  {
      jobPtr.reset();
  
      QJsonParseError parse_error;
      QJsonDocument doc = QJsonDocument::fromJson(response, &parse_error);
      if(parse_error.error != QJsonParseError::NoError) {
          qWarning() << "Error while parsing JSON response from ATL at " << parse_error.offset << " reason: " << parse_error.errorString();
          qWarning() << response;
          return;
      }
  
      QList<ATLauncher::IndexedPack> newList;
  
      auto packs = doc.array();
      for(auto packRaw : packs) {
          auto packObj = packRaw.toObject();
  
          ATLauncher::IndexedPack pack;
  
          try {
              ATLauncher::loadIndexedPack(pack, packObj);
          }
          catch (const JSONValidationError &e) {
              qDebug() << QString::fromUtf8(response);
              qWarning() << "Error while reading pack manifest from ATLauncher: " << e.cause();
              return;
          }
  
          // ignore packs without a published version
          if(pack.versions.length() == 0) continue;
          // only display public packs (for now)
          if(pack.type != ATLauncher::PackType::Public) continue;
          // ignore "system" packs (Vanilla, Vanilla with Forge, etc)
          if(pack.system) continue;
  
          newList.append(pack);
      }
  
      beginInsertRows(QModelIndex(), modpacks.size(), modpacks.size() + newList.size() - 1);
      modpacks.append(newList);
      endInsertRows();
  }
  
  void ListModel::requestFailed(QString reason)
  {
      jobPtr.reset();
  }
  
  void ListModel::getLogo(const QString &logo, const QString &logoUrl, LogoCallback callback)
  {
      if(m_logoMap.contains(logo))
      {
          callback(APPLICATION->metacache()->resolveEntry("ATLauncherPacks", QString("logos/%1").arg(logo.section(".", 0, 0)))->getFullPath());
      }
      else
      {
          requestLogo(logo, logoUrl);
      }
  }
  
  void ListModel::logoFailed(QString logo)
  {
      m_failedLogos.append(logo);
      m_loadingLogos.removeAll(logo);
  }
  
  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].safeName == logo) {
              emit dataChanged(createIndex(i, 0), createIndex(i, 0), {Qt::DecorationRole});
          }
      }
  }
  
  void ListModel::requestLogo(QString file, QString url)
  {
      if(m_loadingLogos.contains(file) || m_failedLogos.contains(file))
      {
          return;
      }
  
      MetaEntryPtr entry = APPLICATION->metacache()->resolveEntry("ATLauncherPacks", QString("logos/%1").arg(file.section(".", 0, 0)));
      NetJob *job = new NetJob(QString("ATLauncher Icon Download %1").arg(file));
      job->addNetAction(Net::Download::makeCached(QUrl(url), entry));
  
      auto fullPath = entry->getFullPath();
      QObject::connect(job, &NetJob::succeeded, this, [this, file, fullPath]
      {
          emit logoLoaded(file, QIcon(fullPath));
          if(waitingCallbacks.contains(file))
          {
              waitingCallbacks.value(file)(fullPath);
          }
      });
  
      QObject::connect(job, &NetJob::failed, this, [this, file]
      {
          emit logoFailed(file);
      });
  
      job->start(APPLICATION->network());
  
      m_loadingLogos.append(file);
  }
  
  }
  