#include "restsviewmodel.h"

#include "models/basemodel.h"
#include "services/settingsservice.h"

RestsViewModel::RestsViewModel(QObject *parent)
    : QObject{parent}
{
    connect(m_restsModel, &BaseModel::dataChanged, this, &RestsViewModel::reloadRests);
    connect(m_productsModel, &BaseModel::dataChanged, this, &RestsViewModel::productsChanged);
    connect(settings(), &SettingsService::selectedStoreIdChanged, this, &RestsViewModel::productsChanged);

    reloadRests();
}

QVariantList RestsViewModel::products() const
{
    QVariantList res;

    const QString storeId = settings()->selectedStoreId();
    const QVariantList products = m_productsModel->items();
    for (const QVariant &product : products) {
        QString productId = product.toMap().value("id").toString();
        QVariantMap rest = m_rests.value(storeId).value(productId).toMap();
        res << QVariantMap {
            { "productId", productId },
            { "title", m_productsModel->itemProperty(productId, "name").toString() },
            { "rest", rest.value("rest", 0.0).toFloat() }
        };
    }

    return res;
}

void RestsViewModel::setProductRest(const QString &productId, float rest)
{
    QString storeId = settings()->selectedStoreId();
    QVariantMap productRest = m_rests.value(storeId).value(productId).toMap();
    productRest["rest"] = rest;
    productRest["storeId"] = storeId;
    productRest["productId"] = productId;
    QString restId = productRest.value("id").toString();
    if (restId.isEmpty()) {
        m_restsModel->addItem(productRest);
    } else {
        m_restsModel->modifyItem(restId, productRest);
    }
}

SettingsService *RestsViewModel::settings() const
{
    return SettingsService::instance();
}

void RestsViewModel::reloadRests()
{
    m_rests.clear();

    const QVariantList rests = m_restsModel->items();
    for (const QVariant &varRest : rests) {
        QVariantMap rest = varRest.toMap();
        QString storeId = rest.value("storeId").toString();
        QVariantMap storeRests = m_rests.value(storeId);
        storeRests[rest.value("productId").toString()] = rest;
        m_rests[storeId] = storeRests;
    }

    emit productsChanged();
}