#include "colnodapi.h"

Q_LOGGING_CATEGORY(colnod, "colnod.api");


ColnodAPI::ColnodAPI(serversdk::RequestManager* reqMan, const qint64 &lastSync, const bool &dryMode, const QString &userName, const QString &password)
    :mReqMan(reqMan), mUserName(userName), mPassword(password), mDryMode(dryMode)
{
    mLastSync.set_timestamp(lastSync);
    mData = std::make_shared<Data>();

    // -----------------------------------
    mReqMan->setIgnoreSsl(true);
    // -----------------------------------
}

void ColnodAPI::downloadData()
{
    // Have to get Login
    auto login = requestLogin();
    connect(login.get(), &serversdk::Request::finished, this, [=](){  // TODO: error handling
        // Get token
        AuthToken token;
        token.fromJson(login->responseData());
        authToken = token.id();

        // if I have all data emit downloadDataFinished
        connect(this, &ColnodAPI::partOfDataReady, this, &ColnodAPI::areDataReady);
        getTokensUpdated(mLastSync);
        getTokensDeleted(mLastSync);
        getSubjectsUpdated(mLastSync);
        getSubjectsDeleted(mLastSync);
    });
}

void ColnodAPI::processData(const std::shared_ptr<Data> &data)
{

    qInfo(colnod) << tab << "-> DATA PROCESSED TO COLNOD:";
    qInfo(colnod) << tab << tab << data->updatedTokens.size() << "TOKENS UPDATED";
    qInfo(colnod) << tab << tab << data->deletedTokens.size() << "TOKENS DELETED";
    qInfo(colnod) << dash;


    connect(this, &ColnodAPI::partOfDataProcessFinished, this, &ColnodAPI::isDataProcessFinished);
    if ( !data->updatedTokens.isEmpty() && !mDryMode) {
        setTokens(data->updatedTokens);
    } else {
        emit partOfDataProcessFinished();
    }
    if ( !data->deletedTokens.isEmpty() && !mDryMode) {
        deleteTokens(data->deletedTokens);
    } else {
        emit partOfDataProcessFinished();
    }
}

std::shared_ptr<serversdk::Request> ColnodAPI::requestLogin()
{
    Q_ASSERT(mReqMan);
    LoginResp login;
    login.set_username(userName());

    // password
    QString encodedPassword = QCryptographicHash::hash(
                password().toLocal8Bit(), // -> bytearray
                QCryptographicHash::Sha512 // SHA 512
                ).toHex().toUpper();
    login.set_password(encodedPassword);

    auto loginRequest = composeRequest("/AaaManager/authSession", login.jsonData());
    loginRequest->setUserName(login.username());
    loginRequest->setPassword(login.password());
    mReqMan->processRequest(loginRequest);

    return loginRequest;
}

void ColnodAPI::getTokensUpdated(const Timestamp &time)
{
    auto request = composeRequest("/TokenManager/getTokensUpdated", time.jsonData());
    request->setUserName(authToken);
    mReqMan->processRequest(request);
    connect(request.get(), &serversdk::Request::finished, [=](){
        saveUpdatedTokens(request->responseData());
        emit partOfDataReady(mData);
    });
}

void ColnodAPI::getTokensDeleted(const Timestamp &time)
{
    auto request = composeRequest("/TokenManager/getTokensDeleted", time.jsonData());
    request->setUserName(authToken);
    mReqMan->processRequest(request);
    connect(request.get(), &serversdk::Request::finished, [=](){
        saveDeletedTokens(request->responseData());
        emit partOfDataReady();
    });
}

void ColnodAPI::getSubjectsUpdated(const Timestamp &time)
{
    auto request = composeRequest("/SubjectManager/getSubjectsUpdated", time.jsonData());
    request->setUserName(authToken);
    mReqMan->processRequest(request);
    connect(request.get(), &serversdk::Request::finished, [=](){
        saveUpdatedSubjects(request->responseData());
        emit partOfDataReady();
    });
}

void ColnodAPI::getSubjectsDeleted(const Timestamp &time)
{
    auto request = composeRequest("/SubjectManager/getSubjectsDeleted", time.jsonData());
    request->setUserName(authToken);
    mReqMan->processRequest(request);
    connect(request.get(), &serversdk::Request::finished, [=](){
        saveDeletedSubjects(request->responseData());
        emit partOfDataReady();
    });
}

void ColnodAPI::setTokens(const QHash<QString, std::shared_ptr<Token>> &tokens)
{
    auto request = composeRequest("/TokenManager/setTokens", Token::tokensToColnodJson(tokens));
    request->setUserName(authToken);
    mReqMan->processRequest(request);
    connect(request.get(),  &serversdk::Request::finished, [=](){
        if (checkResponse(request->responseData())) {
            emit partOfDataProcessFinished();
        }
        else {
            qWarning(colnod) << "Tokens wasn't updated";
            // TODO: error: data wasnt upload to colnod
        }
    });
}

void ColnodAPI::deleteTokens(const QList<QString> &ids)
{
    auto request = composeRequest("/TokenManager/deleteTokens", Token::idsToJSON(ids));
    request->setUserName(authToken);
    mReqMan->processRequest(request);
    connect(request.get(),  &serversdk::Request::finished, [=](){
        if (checkResponse(request->responseData())) {
            emit partOfDataProcessFinished();
        }
        else {
            qWarning(colnod) << "Tokens wasn't deleted";
            // TODO: error: data wasnt upload to colnod
        }
    });

}

std::shared_ptr<serversdk::Request> ColnodAPI::composeRequest(const QString &endpoint, const QByteArray &data)
{
    QString url = mHost + endpoint;
    return std::make_shared<serversdk::Request>("POST", url, data);
}

QString ColnodAPI::password() const
{
    return mPassword;
}

void ColnodAPI::setPassword(const QString &password)
{
    mPassword = password;
}

qint64 ColnodAPI::lastSync() const
{
    return mLastSync.timestamp();
}

void ColnodAPI::setlastSync(const qint64 &lastSync)
{
    mLastSync.set_timestamp(lastSync);
}


QString ColnodAPI::userName() const
{
    return mUserName;
}

void ColnodAPI::setUserName(const QString &userName)
{
    mUserName = userName;
}

void ColnodAPI::areDataReady()
{
    if (++amountData == 4) {

        qInfo(colnod) << tab << "-> COLNOD DATA:";
        qInfo(colnod) << tab << tab << mData->updatedTokens.size() << "TOKENS WERE ADDED/UPDATED";
        qInfo(colnod) << tab << tab << mData->deletedTokens.size() << "TOKENS DELETED";
        qInfo(colnod) << tab << tab << mData->updatedSubjects.size() << "SUBJECTS WERE ADDED/UPDATED";
        qInfo(colnod) << tab << tab << mData->deletedSubjects.size() << "SUBJECTS DELETED";
        qInfo(colnod) << dash;

        emit downloadDataFinished(mData);
        newData();
    }
}

void ColnodAPI::isDataProcessFinished()
{
    if (++amountProccessesFinished == 2) {
        emit dataProcessFinished();
    }
}

void ColnodAPI::saveUpdatedTokens(const QByteArray &responseData)
{
    mData->loadTokensFromJson(responseData);
}

void ColnodAPI::saveDeletedTokens(const QByteArray &responseData)
{
    QJsonDocument doc = QJsonDocument::fromJson(responseData);
    QJsonArray items = doc.object()["items"].toArray();
    for (QJsonValueRef item : items) {
        mData->deletedTokens.append(item.toString());
    }
}

void ColnodAPI::saveUpdatedSubjects(const QByteArray &responseData)
{
    mData->loadSubjectsFormJson(responseData);
}

void ColnodAPI::saveDeletedSubjects(const QByteArray &responseData)
{
    QJsonDocument doc = QJsonDocument::fromJson(responseData);
    QJsonArray items = doc.object()["items"].toArray();
    for (QJsonValueRef item : items) {
        mData->deletedSubjects.append(item.toString());
    }
}

void ColnodAPI::newData()
{
    mData = std::make_shared<Data>();
}

bool ColnodAPI::checkResponse(const QByteArray &responseData)
{
    QJsonDocument doc = QJsonDocument::fromJson(responseData);
    return doc.object().contains("items");
}