#include "dataprovider.h"
#include <QNetworkRequest>
#include <QNetworkReply>
#include <QJsonDocument>
#include <QJsonObject>
#include <QUrl>
#include <QUrlQuery>

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

void DataProvider::signalerSucces()
{
    m_connecte = true;
    m_derniereConnexionReussie = QDateTime::currentDateTime();
    emit etatConnexionChange();
}

void DataProvider::signalerEchec()
{
    // Ne touche JAMAIS m_derniereConnexionReussie ici : on veut garder la
    // trace du dernier succès réel, pas la remplacer par l'instant de l'échec.
    if (m_connecte) {
        m_connecte = false;
        emit etatConnexionChange();
    }
}

void DataProvider::get_familles(const QString &type)
{
    QUrl url(m_baseUrl + "/elements/familles");
    QUrlQuery query;
    query.addQueryItem("type", type);
    url.setQuery(query);

    auto reply = m_manager.get(QNetworkRequest(url));
    connect(reply, &QNetworkReply::finished, this, [this, reply, type]() {
        reply->deleteLater();
        if (reply->error() != QNetworkReply::NoError) {
            signalerEchec();
            emit erreur(reply->errorString());
            return;
        }
        const auto doc = QJsonDocument::fromJson(reply->readAll());
        const auto obj = doc.object();
        if (obj["status"].toString() != "ok") {
            signalerEchec();
            emit erreur(obj["message"].toString());
            return;
        }
        signalerSucces();
        emit famillesRecues(type, obj["familles"].toArray());
    });
}

void DataProvider::get_elements(const QString &type, int famille)
{
    QUrl url(m_baseUrl + "/elements");
    QUrlQuery query;
    query.addQueryItem("type", type);
    query.addQueryItem("famille", QString::number(famille));
    url.setQuery(query);

    auto reply = m_manager.get(QNetworkRequest(url));
    connect(reply, &QNetworkReply::finished, this, [this, reply, type, famille]() {
        reply->deleteLater();
        if (reply->error() != QNetworkReply::NoError) {
            signalerEchec();
            emit erreur(reply->errorString());
            return;
        }
        const auto doc = QJsonDocument::fromJson(reply->readAll());
        const auto obj = doc.object();
        if (obj["status"].toString() != "ok") {
            signalerEchec();
            emit erreur(obj["message"].toString());
            return;
        }
        signalerSucces();
        emit elementsRecus(type, famille, obj["elements"].toArray());
    });
}

void DataProvider::set_circuit(int id, int consigne)
{
    QUrl url(m_baseUrl + "/elements/circuit/" + QString::number(id));
    QNetworkRequest request(url);
    request.setHeader(QNetworkRequest::ContentTypeHeader, "application/json");

    QJsonObject body;
    body["consigne"] = consigne;
    const QByteArray data = QJsonDocument(body).toJson();

    auto reply = m_manager.sendCustomRequest(request, "PATCH", data);
    connect(reply, &QNetworkReply::finished, this, [this, reply, id]() {
        reply->deleteLater();
        const bool succes = (reply->error() == QNetworkReply::NoError);
        if (succes) signalerSucces();
        else {
            signalerEchec();
            emit erreur(reply->errorString());
        }
        emit circuitModifie(id, succes);
    });
}