From baefd64ce66487f6d9a822456eab2a28de100b75 Mon Sep 17 00:00:00 2001
From: "Denis V. Dedkov" <denis.v.dedkov@gmail.com>
Date: Fri, 14 Apr 2023 08:37:59 +0200
Subject: [PATCH] Products linked with rests

---
 qml/Views/ProductsView.qml       |  3 ++-
 viewmodels/productsviewmodel.cpp | 31 ++++++++++++++++++++++++++++---
 viewmodels/productsviewmodel.h   |  6 ++++++
 viewmodels/restsviewmodel.cpp    |  1 +
 4 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/qml/Views/ProductsView.qml b/qml/Views/ProductsView.qml
index 1e2e80a..d1d9ee4 100644
--- a/qml/Views/ProductsView.qml
+++ b/qml/Views/ProductsView.qml
@@ -25,6 +25,7 @@ Page {
             delegate: ItemDelegate {
                 width: productsList.width
 
+                font.strikeout: modelData.rest === 0
                 text: modelData.name
                 height: spinbox.height
 
@@ -33,7 +34,7 @@ Page {
 
                     width: 150
                     from: 0
-                    to: 100 * 100
+                    to: modelData.rest * 100
                     stepSize: 50
                     anchors.right: parent.right
                     editable: true
diff --git a/viewmodels/productsviewmodel.cpp b/viewmodels/productsviewmodel.cpp
index f826945..9181143 100644
--- a/viewmodels/productsviewmodel.cpp
+++ b/viewmodels/productsviewmodel.cpp
@@ -7,11 +7,19 @@ ProductsViewModel::ProductsViewModel(QObject *parent)
     : QObject{parent}
 {
     connect(m_productsModel, &BaseModel::dataChanged, this, &ProductsViewModel::productsChanged);
+    connect(m_restsModel, &BaseModel::dataChanged, this, &ProductsViewModel::productsChanged);
+    connect(settings(), &SettingsService::selectedStoreIdChanged, this, &ProductsViewModel::productsChanged);
 }
 
 QVariantList ProductsViewModel::products() const
 {
-    return m_productsModel->items();
+    QVariantList res;
+    for (const QVariant &product : m_productsModel->items()) {
+        QVariantMap item = product.toMap();
+        item["rest"] = productRest(item.value("id").toString());
+        res << item;
+    }
+    return res;
 }
 
 QVariantList ProductsViewModel::order() const
@@ -59,20 +67,37 @@ void ProductsViewModel::setOrderValue(const QString &productId, float value)
 
 void ProductsViewModel::submitOrder()
 {
-    BaseModel *ordersModel = ModelsRegister::model("orders");
-    ordersModel->submitItem({
+    m_ordersModel->submitItem({
         { "userId", settings()->selectedUserId() },
         { "storeId", settings()->selectedStoreId() },
         { "products", m_order.values() },
         { "amount", orderSum() }
     });
 
+    updateRests();
+
     m_order.clear();
 
     emit orderChanged();
 }
 
+float ProductsViewModel::productRest(const QString &productId) const
+{
+    QString storeId = settings()->selectedStoreId();
+    return m_restsModel->productRest(storeId, productId);
+}
+
 SettingsService *ProductsViewModel::settings() const
 {
     return SettingsService::instance();
 }
+
+void ProductsViewModel::updateRests() const
+{
+    QString storeId = settings()->selectedStoreId();
+    for (auto it = m_order.constBegin(); it != m_order.constEnd(); ++it) {
+        float quantity = it.value().toMap().value("quantity", 0.0).toFloat();
+        float rest = productRest(it.key());
+        m_restsModel->submitRest(storeId, it.key(), rest - quantity);
+    }
+}
diff --git a/viewmodels/productsviewmodel.h b/viewmodels/productsviewmodel.h
index b0f8dcb..615678e 100644
--- a/viewmodels/productsviewmodel.h
+++ b/viewmodels/productsviewmodel.h
@@ -4,6 +4,8 @@
 #include <QObject>
 #include <QVariantMap>
 
+#include "models/restsmodel.h"
+
 #include "services/modelsregister.h"
 
 class SettingsService;
@@ -31,8 +33,12 @@ signals:
 
 private:
     SettingsService *settings() const;
+    float productRest(const QString &productId) const;
+    void updateRests() const;
 
     BaseModel *m_productsModel = ModelsRegister::model("products");
+    BaseModel *m_ordersModel = ModelsRegister::model("orders");
+    RestsModel *m_restsModel = ModelsRegister::get<RestsModel>("rests");
     QVariantMap m_order;
 };
 
diff --git a/viewmodels/restsviewmodel.cpp b/viewmodels/restsviewmodel.cpp
index b0c9d97..3fecd03 100644
--- a/viewmodels/restsviewmodel.cpp
+++ b/viewmodels/restsviewmodel.cpp
@@ -5,6 +5,7 @@
 RestsViewModel::RestsViewModel(QObject *parent)
     : QObject{parent}
 {
+    connect(m_restsModel, &BaseModel::dataChanged, this, &RestsViewModel::productsChanged);
     connect(m_productsModel, &BaseModel::dataChanged, this, &RestsViewModel::productsChanged);
     connect(settings(), &SettingsService::selectedStoreIdChanged, this, &RestsViewModel::productsChanged);
 }