#include "NetworkService.h"

#include <QEventLoop>
#include <QUrlQuery>
#include <QHttpPart>
#include <QNetworkReply>
#include <QJsonObject>
#include <QJsonArray>

#include "dao/AccountDAO.h"
#include "dao/EventDAO.h"
#include "dao/TransactionDAO.h"
#include "db/EventInfo.h"

NetworkService::NetworkService(QObject *parent) : QObject(parent) {
}

NetworkService::~NetworkService() = default;

// FIXME доделать работу с экстра
void NetworkService::addExtra(const QString &key, const QVariant &value) {
    m_extraData[key] = value;
}

void addFormField(QHttpMultiPart *multiPart, const QString &fieldName, const QString &fieldValue) {
    QHttpPart formField;
    formField.setHeader(
        QNetworkRequest::ContentDispositionHeader,QStringLiteral("form-data; name=\"%1\"").arg(fieldName)
    );
    formField.setBody(fieldValue.toUtf8());
    multiPart->append(formField);
}

void addFormMetadata(QHttpMultiPart *multiPart, const QByteArray &fieldValue) {
    QHttpPart jsonPart;
    jsonPart.setHeader(QNetworkRequest::ContentTypeHeader, "application/json; charset=UTF-8");
    jsonPart.setHeader(QNetworkRequest::ContentDispositionHeader, R"(form-data; name="metadata")");
    jsonPart.setBody(fieldValue);
    multiPart->append(jsonPart);
}

QJsonValue NetworkService::post(QHttpMultiPart *multiPart, const QString &path) {
    QNetworkAccessManager manager; // создаём внутри потока
    const QUrl url(path);
    const QNetworkRequest request(url);

    QNetworkReply *reply = manager.post(request, multiPart);
    multiPart->setParent(reply);

    QEventLoop loop;
    connect(reply, &QNetworkReply::finished, &loop, &QEventLoop::quit);
    connect(reply, &QNetworkReply::errorOccurred, [&loop](QNetworkReply::NetworkError) {
        loop.quit();
    });
    loop.exec(); // <- здесь и запускается event-loop потока

    QJsonValue result;
    if (reply->error() == QNetworkReply::NoError) {
        const QByteArray raw = reply->readAll();
        QJsonParseError err;
        const QJsonDocument doc = QJsonDocument::fromJson(raw, &err);
        if (err.error == QJsonParseError::NoError && doc.isObject()) {
            const QJsonObject root = doc.object();
            if (root.value("success").toBool()) {
                result = root.value("data");
            } else {
                qWarning() << "Ошибка:" << root;
            }
        }
    } else {
        qWarning() << "Ошибка:" << reply->errorString();
    }
    reply->deleteLater();
    return result;
}


QJsonArray NetworkService::get(const QString &path, const QMap<QString, QString> &params) {
    QNetworkAccessManager manager; // создаём внутри потока

    QUrl url(path);
    QUrlQuery query;
    for (auto it = params.constBegin(); it != params.constEnd(); ++it) {
        query.addQueryItem(it.key(), it.value());
    }
    url.setQuery(query);

    const QNetworkRequest request(url);
    QNetworkReply *reply = manager.get(request);

    QEventLoop loop;
    connect(reply, &QNetworkReply::finished, &loop, &QEventLoop::quit);
    connect(reply, &QNetworkReply::errorOccurred, [&loop](QNetworkReply::NetworkError) {
        loop.quit();
    });
    loop.exec(); // <- здесь и запускается event-loop потока

    QJsonArray result;
    if (reply->error() == QNetworkReply::NoError) {
        const QByteArray raw = reply->readAll();
        QJsonParseError err;
        const QJsonDocument doc = QJsonDocument::fromJson(raw, &err);
        if (err.error == QJsonParseError::NoError && doc.isObject()) {
            const QJsonObject root = doc.object();
            if (root.value("success").toBool()) {
                result = root.value("data").toArray();
            } else {
                qWarning() << "Ошибка:" << root;
            }
        }
    } else {
        qWarning() << "Ошибка:" << reply->errorString();
    }
    reply->deleteLater();
    return result;
}

void NetworkService::postAccountsData() {
    QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);

    addFormMetadata(multiPart, m_json);
    addFormField(multiPart, "desktopUniqueName", m_desktopId);
    addFormField(multiPart, "androidUniqueName", m_deviceId);
    const bool isSuccess = post(multiPart, "http://localhost:9999/api/v1/account/update").toBool();
    if (!isSuccess) {
        qDebug() << "Cant post accounts data";
    }

    emit finished();
}

void NetworkService::getPayments() {
    QMap<QString, QString> params;
    params["desktopUniqueName"] = m_desktopId;
    const QJsonArray data = get("http://localhost:9999/api/v1/payments", params);

    for (QJsonValue item: data) {
        QJsonObject obj = item.toObject();
        EventInfo eventInfo;
        eventInfo.status = EventStatus::Wait;
        eventInfo.externalId = obj["id"].toInt();
        eventInfo.amount = obj["amount"].toDouble();
        eventInfo.bankName = obj["bankName"].toString();
        eventInfo.phone = obj["phone"].toString();

        QString deviceId = obj["deviceId"].toString();
        QString appName = obj["appName"].toString();
        QString lastNumbers = obj["lastNumbers"].toString();
        AccountInfo account = AccountDAO::findAppAccount(deviceId, appName, lastNumbers);

        eventInfo.accountId = account.id;


        int id = EventDAO::insertEvent(eventInfo);
        if (id == -1) {
            qDebug() << "Cant insert event";
        } else {
            if (!EventDAO::updateEvent(id, EventStatus::Wait)) {
                qDebug() << "Cant update event";
            }
        }
    }


    emit finished();
}


void NetworkService::updateTransactionData() {
    QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);

    addFormMetadata(multiPart, m_json);
    addFormField(multiPart, "desktopUniqueName", m_desktopId);
    addFormField(multiPart, "androidUniqueName", m_deviceId);
    addFormField(multiPart, "lastNumbers", m_extraData["lastNumbers"].toString());

    const bool isSuccess = post(multiPart, "http://localhost:9999/api/v1/transaction/update").toBool();
    if (!isSuccess) {
        qDebug() << "Cant update transaction";
    }

    emit finished();
}

void NetworkService::insertTransactionData() {
    QHttpMultiPart *multiPart = new QHttpMultiPart(QHttpMultiPart::FormDataType);

    addFormMetadata(multiPart, m_json);
    addFormField(multiPart, "desktopUniqueName", m_desktopId);
    addFormField(multiPart, "androidUniqueName", m_deviceId);
    addFormField(multiPart, "lastNumbers", m_extraData["lastNumbers"].toString());

    const int id = post(multiPart, "http://localhost:9999/api/v1/transaction/insert").toInt();
    if (id > 0) {
        const int transactionId = m_extraData["transactionId"].toInt();
        if (!TransactionDAO::updateExternalTransactionId(transactionId, id)) {
            qDebug() << "Cant update transaction id";
        }
    }
    emit finished();
}

void NetworkService::stop() {
    m_running = false;
}