#include "servercommunicator.h"

#include <QJsonArray>
#include <QJsonObject>
#include <QRestAccessManager>
#include <QRestReply>

#include "../genericcore.h"
#include "../structs.h"
#include "apiroutes.h"

using namespace Qt::StringLiterals;

ServerCommunicator::ServerCommunicator(GenericCore* core)
    : m_core(core)
    , QObject{core} {
  m_netManager.setAutoDeleteReplies(true);
  m_restManager = std::make_shared<QRestAccessManager>(&m_netManager);
  m_serviceApi  = std::make_shared<QNetworkRequestFactory>();

  connect(m_core, &GenericCore::sendGetRequest, this,
          &ServerCommunicator::onSendGetRequestTriggered);
  connect(this, &ServerCommunicator::biddingsChanged, m_core, &GenericCore::onBiddingsChanged);
}

bool ServerCommunicator::sslSupported() const {
#if QT_CONFIG(ssl)
  return QSslSocket::supportsSsl();
#else
  return false;
#endif
}

QUrl ServerCommunicator::url() const { return m_serviceApi->baseUrl(); }

void ServerCommunicator::setUrl(const QUrl& url) {
  if (m_serviceApi->baseUrl() == url) {
    return;
  }
  m_serviceApi->setBaseUrl(url);
  QHttpHeaders authenticationHeaders;
  authenticationHeaders.append(QHttpHeaders::WellKnownHeader::ContentType, "application/json");
  m_serviceApi->setCommonHeaders(authenticationHeaders);
  emit urlChanged();
}

void ServerCommunicator::fetchItems() {
  /// Set up a GET request
  m_restManager->get(m_serviceApi->createRequest(ROUTE_ITEMS), this, [this](QRestReply& reply) {
    if (reply.isSuccess()) {
      qInfo() << "Fetching items successful.";
      const QJsonDocument doc = reply.readJson().value();
      emit itemsFetched(doc.toJson());

    } else {
      if (reply.hasError()) {
        const QString errorString = reply.errorString();
        qCritical() << "ERROR:" << errorString;
        emit itemsFetchFailure(errorString);
      } else {
        int statusCode = reply.httpStatus();
        qCritical() << "ERROR:" << statusCode;
        emit itemsFetchFailure(QString::number(statusCode));
        emit itemsFetchFailure(QString("HTTP status code: %1").arg(statusCode));
      }
    }
  });
}

void ServerCommunicator::postItems(const QByteArray& jsonData) {
  QNetworkReply* reply = m_restManager->post(m_serviceApi->createRequest(ROUTE_ITEMS), jsonData);

  QObject::connect(reply, &QNetworkReply::finished, [=]() {
    if (reply->error() == QNetworkReply::NoError) {
      QByteArray responseData = reply->readAll();
      const QString message   = QString("POST successful! Response: %1").arg(responseData);
      qInfo() << message;
      emit postRequestSuccessful(responseData);
    } else {
      const QString message = QString("Error: %1").arg(reply->errorString());
      qDebug() << message;
      emit postRequestFailure(message);
    }
    reply->deleteLater();
  });
}

void ServerCommunicator::deleteItem(const QString& id) {
  const QString deleteRoute = QString("%1/%2").arg(ROUTE_ITEMS, id);
  QNetworkReply* reply = m_restManager->deleteResource(m_serviceApi->createRequest(deleteRoute));

  QObject::connect(reply, &QNetworkReply::finished, [=]() {
    if (reply->error() == QNetworkReply::NoError) {
      QByteArray responseData = reply->readAll();
      const QString message   = QString("DELETE successful! Response: %1").arg(responseData);
      qInfo() << message;
      emit deleteRequestSuccessful(responseData);
    } else {
      const QString message = QString("Error: %1").arg(reply->errorString());
      qDebug() << message;
      emit deleteRequestFailure(message);
    }
    reply->deleteLater();
  });
}

void ServerCommunicator::setServerConfiguration(const QString url,
                                                const QString email,
                                                const QString password) {
  setUrl(url);

  m_email    = email;
  m_password = password;
}

void ServerCommunicator::onSendGetRequestTriggered(const GetRequestTypes type) {
  QString path;
  switch (type) {
    case GetCurrentBiddingRound:
      path = ROUTE_CURRENT_BIDDINGROUND;
      break;
    case StartNewBiddingRound:
      path = ROUTE_START_BIDDINGROUND;
      break;
    case RestartLastBiddingRound:
      path = ROUTE_RESTART_BIDDINGROUND;
      break;
    case StopCurrentBiddingRound:
      path = ROUTE_STOP_BIDDINGROUND;
      break;
    // case GetBiddingsOfSpecificRound:
    case GetBiddingsOfHighestRound:
      path = ROUTE_GET_BIDDINGS_OF_HIGHEST_ROUND;
      break;
    default:
      qWarning() << "No route found for GetRequestType:" << type;
      break;
  }

  // TODO move into default case of switch statement?
  if (path.isEmpty()) {
    qDebug() << "Empty path -> Not sending a request.";
    return;
  }

  const QNetworkRequest request = m_serviceApi->createRequest(path);

  m_restManager->get(request, this, [this, type](QRestReply& reply) {
    if (reply.isSuccess()) {
      qInfo() << "Request successful.";
      const QJsonDocument doc = reply.readJson().value();
      onGetReplySuccessful(type, doc);
    } else {
      if (reply.hasError()) {
        const QString errorString = reply.errorString();
        qWarning() << "Network error:" << errorString;
        onGetReplyFailure(type, errorString);
      } else {
        int statusCode = reply.httpStatus();
        qWarning() << "Request not successful:" << statusCode;
        onGetReplyFailure(type, QString("HTTP status code: %1").arg(statusCode));
      }
    }
  });
}

void ServerCommunicator::onGetReplySuccessful(const GetRequestTypes type, const QJsonDocument doc) {
  switch (type) {
    case GetCurrentBiddingRound:
    case StartNewBiddingRound:
    case RestartLastBiddingRound:
    case StopCurrentBiddingRound:
      currentBiddingRoundChangedReply(doc);
      break;
    case GetBiddingsOfHighestRound:
      currentBiddingsReply(doc);
      break;
    default:
      qWarning() << "Can't match request type:" << type;
      break;
  }
}

void ServerCommunicator::onGetReplyFailure(const GetRequestTypes type, const QString errorString) {
  const QString message =
      QString("Request of type %1 returned: %2").arg(QString::number(type), errorString);
  m_core->displayStatusMessage(message);
}

void ServerCommunicator::currentBiddingRoundChangedReply(const QJsonDocument jsonDoc) {
  qInfo() << "Current bidding round received.";
  const QJsonObject rootObject = jsonDoc["data"].toObject();
  const int roundNumber        = rootObject["round_number"].toInt();
  const bool stopped           = rootObject["stopped"].toBool();
  const bool isActive          = !stopped;

  // NOTE ?use ServerCommunicator::currentBiddingRoundChanged signal instead of emiting a signal of
  // the core directly?
  emit m_core->currentBiddingRoundChanged(roundNumber, isActive);
}

void ServerCommunicator::currentBiddingsReply(const QJsonDocument jsonDoc) {
  qCritical() << "currentBiddingsReply:" << jsonDoc;

  // NEXT extract biddings from jsonDoc
  const int roundNumber = 0;
  const bidding dummyBidding{.userId       = QUuid(),
                             .biddingRound = 0,
                             .amount       = 123,
                             .depotWishOne = "one",
                             .depotWishTwo = "two"};
  const QList<bidding> biddings{dummyBidding};

  emit biddingsChanged(roundNumber, biddings);
}