started to work over currencies

models/CMakeLists.txt

@@ -4,11 +4,13 @@
 set(HEADERS
     magpie.h
     assets.h
+    currencies.h
 )
 
 set(SOURCES
     magpie.cpp
     assets.cpp
+    currencies.cpp
 )
 
 target_sources(magpie PRIVATE ${SOURCES})

models/assets.cpp

@@ -5,6 +5,10 @@
 
 #include "utils/helpers.h"
 
+const QHash<int, QByteArray> Models::Assets::roles({
+    {Title, "title"}, {Icon, "icon"}, {Balance, "balance"}, {Archived, "archived"}, {Color, "color"}, {Id, "assetId"}
+});
+
 Models::Assets::Assets (QObject* parent):
     QAbstractListModel(parent),
     records(),
@@ -17,7 +21,7 @@ void Models::Assets::clear () {
     endResetModel();
 }
 
-void Models::Assets::addAsset (const Asset& asset) {
+void Models::Assets::add (const Asset& asset) {
     QModelIndex index = getIndex(asset.id);
     if (index.isValid())
         throw std::runtime_error("An attempt to insert a duplicating Asset to an asset model");
@@ -27,7 +31,7 @@ void Models::Assets::addAsset (const Asset& asset) {
     endInsertRows();
 }
 
-void Models::Assets::addAssets (const std::deque<Asset>& assets) {
+void Models::Assets::add (const std::deque<Asset>& assets) {
     if (assets.empty())
         return;
 
@@ -42,7 +46,7 @@ void Models::Assets::addAssets (const std::deque<Asset>& assets) {
     endInsertRows();
 }
 
-void Models::Assets::deleteAsset (unsigned int id) {
+void Models::Assets::remove (unsigned int id) {
     QModelIndex index = getIndex(id);
     if (!index.isValid())
         throw std::runtime_error("An attempt to delete non existing Asset from asset model");
@@ -64,10 +68,7 @@ int Models::Assets::rowCount (const QModelIndex& parent) const {
 }
 
 QHash<int, QByteArray> Models::Assets::roleNames () const {
-    static const QHash<int, QByteArray> roleNames({
+    return roles;
-        {Title, "title"}, {Icon, "icon"}, {Balance, "balance"}, {Archived, "archived"}, {Color, "color"}, {Id, "assetId"}
-    });
-    return roleNames;
 }
 
 bool Models::Assets::canFetchMore (const QModelIndex& parent) const {

models/assets.h

@@ -37,10 +37,10 @@ public:
         Id
     };
 
-    void clear();
+    void clear ();
-    void addAsset(const Asset& asset);
+    void add (const Asset& asset);
-    void addAssets(const std::deque<Asset>& assets);
+    void add (const std::deque<Asset>& assets);
-    void deleteAsset(unsigned int id);
+    void remove (unsigned int id);
 
     //Basic functionality:
     int rowCount (const QModelIndex& parent = QModelIndex()) const override;
@@ -51,16 +51,17 @@ public:
     void fetchMore (const QModelIndex& parent) override;
     QVariant data (const QModelIndex& index, int role = Qt::DisplayRole) const override;
 
-    static bool deserialize(const QVariantList& from, std::deque<Asset>& out);
+    static bool deserialize (const QVariantList& from, std::deque<Asset>& out);
+    static const QHash<int, QByteArray> roles;
 
 signals:
-    void requestAssets();
+    void requestAssets ();
 
 public slots:
-    void receivedAssets(const std::deque<Asset>& assets);
+    void receivedAssets (const std::deque<Asset>& assets);
 
 private:
-    QModelIndex getIndex(unsigned int id) const;
+    QModelIndex getIndex (unsigned int id) const;
 
 private:
     enum class State {

models/currencies.cpp

@@ -0,0 +1,132 @@
+//SPDX-FileCopyrightText: 2023 Yury Gubich <blue@macaw.me>
+//SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "currencies.h"
+
+#include "utils/helpers.h"
+
+const QHash<int, QByteArray> Models::Currencies::roles({
+    {Id, "id"}, {Code, "code"}, {Title, "title"}, {Type, "type"}, {Value, "value"}, {Description, "description"}, {Icon, "icon"}
+});
+
+Models::Currencies::Currencies (QObject* parent):
+    QAbstractListModel(parent),
+    order(),
+    index(),
+    map()
+{}
+
+void Models::Currencies::clear () {
+    beginResetModel();
+    order.clear();
+    index.clear();
+    map.clear();
+    endResetModel();
+}
+
+void Models::Currencies::add (const Currency& currency) {
+    if (map.count(currency.id))
+        throw std::runtime_error("An attempt to insert a duplicating currency to a currency model");
+
+    beginInsertRows(QModelIndex(), index.size(), index.size());
+    Order::iterator itr = order.insert(order.end(), currency);
+    index.push_back(itr);
+    map.emplace(currency.id, itr);
+    endInsertRows();
+}
+
+void Models::Currencies::add (const std::deque<Currency>& currencies) {
+    if (currencies.empty())
+        return;
+
+    for (const Currency& currency : currencies)
+        if (map.count(currency.id))
+            throw std::runtime_error("An attempt to insert a duplicating currency to a currency model (bulk)");
+
+    beginInsertRows(QModelIndex(), index.size(), index.size() + currencies.size() - 1);
+    for (const Currency& currency : currencies) {
+        Order::iterator itr = order.insert(order.end(), currency);
+        index.push_back(itr);
+        map.emplace(currency.id, itr);
+    }
+
+    endInsertRows();
+}
+
+void Models::Currencies::remove (Currency::ID id) {
+    Map::iterator mItr = map.find(id);
+    if (mItr == map.end())
+        throw std::runtime_error("An attempt to delete non existing currency from currency model");
+
+    Order::iterator itr = mItr->second;
+    Index::iterator iItr = std::find(index.begin(), index.end(), itr);
+    int row = std::distance(index.begin(), iItr);
+
+    beginRemoveRows(QModelIndex(), row, row);
+    map.erase(mItr);
+    index.erase(iItr);
+    order.erase(itr);
+    endRemoveRows();
+}
+
+int Models::Currencies::rowCount (const QModelIndex& parent) const {
+    //For list models only the root node (an invalid parent) should return the
+    //list's size. For all other (valid) parents, rowCount() should return 0 so
+    //that it does not become a tree model.
+    if (parent.isValid())
+        return 0;
+
+    return index.size();
+}
+
+QHash<int, QByteArray> Models::Currencies::roleNames () const {
+    return roles;
+}
+
+QVariant Models::Currencies::data (const QModelIndex& index, int role) const {
+    if (!index.isValid())
+        return QVariant();
+
+    int row = index.row();
+    if (row >= 0 && row < Currencies::index.size()) {
+        const Order::iterator& itr = Currencies::index[row];
+        switch (role) {
+            case Qt::DisplayRole:
+            case Title:
+                return itr->title;
+            case Icon:
+                return itr->icon;
+            case Description:
+                return itr->description;
+            case Code:
+                return itr->code;
+            case Type:
+                return itr->type;
+            case Id:
+                return itr->id;
+            case Value:
+                return itr->value;
+        }
+    }
+
+    return QVariant();
+}
+
+bool Models::Currencies::deserialize (const QVariantList& from, std::deque<Currency>& out) {
+    for (const QVariant& item : from) {
+        if (!item.canConvert<QVariantMap>())
+            return false;
+
+        const QVariantMap& ser = qast<QVariantMap>(item);
+        Currency& currency = out.emplace_back();
+        currency.title = ser.value("title").toString();
+        currency.icon = ser.value("icon", "").toString();
+        currency.description = ser.value("archived", "").toString();
+        currency.id = ser.value("id").toUInt();
+        currency.code = ser.value("code").toString();
+        currency.value = ser.value("value").toDouble();
+        currency.type = ser.value("type", 1).toUInt();
+    }
+
+    return true;
+}

models/currencies.h

@@ -0,0 +1,68 @@
+//SPDX-FileCopyrightText: 2023 Yury Gubich <blue@macaw.me>
+//SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <deque>
+#include <list>
+#include <map>
+
+#include <QString>
+#include <QColor>
+#include <QAbstractListModel>
+#include <qqmlregistration.h>
+
+namespace Models {
+struct Currency {
+    using ID = uint32_t;
+
+    ID id;
+    QString code;
+    QString title;
+    unsigned int type;
+    double value;
+    QString description;
+    QString icon;
+};
+
+class Currencies : public QAbstractListModel {
+    Q_OBJECT
+    QML_ELEMENT
+
+public:
+    Currencies (QObject* parent = nullptr);
+
+    enum Roles {
+        Id = Qt::UserRole + 1,
+        Code,
+        Title,
+        Type,
+        Value,
+        Description,
+        Icon
+    };
+
+    void clear ();
+    void add (const Currency& currency);
+    void add (const std::deque<Currency>& currencies);
+    void remove (Currency::ID id);
+
+    //Basic functionality:
+    int rowCount (const QModelIndex& parent = QModelIndex()) const override;
+    QHash<int, QByteArray> roleNames () const override;
+    QVariant data (const QModelIndex& index, int role = Qt::DisplayRole) const override;
+
+    static bool deserialize(const QVariantList& from, std::deque<Currency>& out);
+    static const QHash<int, QByteArray> roles;
+
+private:
+    using Order = std::list<Currency>;
+    using Index = std::deque<Order::iterator>;
+    using Map = std::map<Currency::ID, Order::iterator>;
+
+    Order order;
+    Index index;
+    Map map;
+};
+
+}

models/magpie.cpp

@@ -18,7 +18,8 @@ Models::Magpie::Magpie (QObject* parent):
     renewToken(),
     api(),
     firstPoll(),
-    pollRequestId(API::none)
+    pollRequestId(API::none),
+    requestingCurrencies(false)
 {
     firstPoll.setSingleShot(true);
     firstPoll.setInterval(2000);
@@ -89,6 +90,10 @@ Models::Assets* Models::Magpie::getAssets () {
     return &assets;
 }
 
+Models::Currencies* Models::Magpie::getCurrencies () {
+    return &currencies;
+}
+
 void Models::Magpie::requestAssets () {
     api->requestAssets(
         [this] (const QVariantList& list) {
@@ -101,10 +106,10 @@ void Models::Magpie::requestAssets () {
                 qDebug() << "Assets successfully received";
             }
 
-            assets.addAssets(result);
+            assets.add(result);
         },
         [this] (const QString& error, const std::optional<QVariantMap>& data) {
-            assets.addAssets({});
+            assets.add(std::deque<Asset>());
         }
     );
 }
@@ -172,35 +177,55 @@ bool Models::Magpie::handleChanges (const QVariantMap& changes) {
         }
     }
 
+    bool result = true;
     itr = changes.constFind("assets");
-    if (itr != changes.constEnd() && itr.value().canConvert<QVariantMap>()) {
+    if (itr != changes.constEnd() && itr.value().canConvert<QVariantMap>())
-        const QVariantMap& assets = qast<QVariantMap>(itr.value());
+        result = handleAssetChanges(qast<QVariantMap>(itr.value()));
-        QVariantMap::ConstIterator aItr = assets.constFind("invalidate");
+
-        if (aItr != assets.constEnd()) {
+    itr = changes.constFind("currencies");
+    if (itr != changes.constEnd() && itr.value().canConvert<QVariantMap>())
+        result = result && handleCurrenciesChanges(qast<QVariantMap>(itr.value()));
+
+    return result;
+}
+
+bool Models::Magpie::handleAssetChanges (const QVariantMap& changes) {
+    QVariantMap::ConstIterator aItr = changes.constFind("invalidate");
+    if (aItr != changes.constEnd()) {
         const QVariant& vinv = aItr.value();
         if (vinv.canConvert<bool>() && vinv.toBool())
-                Magpie::assets.clear();
+            assets.clear();
     }
 
-        aItr = assets.constFind("added");
+    aItr = changes.constFind("added");
-        if (aItr != assets.constEnd() && aItr.value().canConvert<QVariantList>()) {
+    if (aItr != changes.constEnd() && aItr.value().canConvert<QVariantList>()) {
         std::deque<Models::Asset> added;
         if (!Models::Assets::deserialize(qast<QVariantList>(aItr.value()), added))
             qDebug() << "Error deserializng added assets";
         else
-                Magpie::assets.addAssets(added);
+            assets.add(added);
     }
 
-        aItr = assets.constFind("removed");
+    aItr = changes.constFind("removed");
-        if (aItr != assets.constEnd() && aItr.value().canConvert<QVariantList>()) {
+    if (aItr != changes.constEnd() && aItr.value().canConvert<QVariantList>()) {
         const QVariantList rem = qast<QVariantList>(aItr.value());
         for (const QVariant& vId : rem) {
             if (vId.isValid() && vId.canConvert<unsigned int>())
-                    Magpie::assets.deleteAsset(vId.toUInt());
+                assets.remove(vId.toUInt());
             else
                 qDebug() << "Error deserializing removed assets";
         }
     }
+
+    return true;
+}
+
+bool Models::Magpie::handleCurrenciesChanges (const QVariantMap& changes) {
+    QVariantMap::ConstIterator aItr = changes.constFind("invalidate");
+    if (aItr != changes.constEnd()) {
+        const QVariant& vinv = aItr.value();
+        if (vinv.canConvert<bool>() && vinv.toBool())
+            requestCurrencies();
     }
 
     return true;
@@ -208,4 +233,12 @@ bool Models::Magpie::handleChanges (const QVariantMap& changes) {
 
 void Models::Magpie::resetAllModels () {
     assets.clear();
+    requestCurrencies();
+}
+
+void Models::Magpie::requestCurrencies () {
+    if (requestingCurrencies)
+        return;
+
+    currencies.clear();
 }

models/magpie.h

@@ -9,6 +9,7 @@
 #include <QQmlEngine>
 #include <QTimer>
 
+#include "currencies.h"
 #include "assets.h"
 
 class API;
@@ -32,6 +33,7 @@ public:
     Q_PROPERTY(QUrl address READ getAddress NOTIFY addressChanged)
     Q_PROPERTY(State state READ getState NOTIFY stateChanged)
     Q_PROPERTY(Assets* assets READ getAssets CONSTANT)
+    Q_PROPERTY(Currencies* currencies READ getCurrencies CONSTANT)
 
     explicit Magpie(QObject *parent = nullptr);
 
@@ -46,6 +48,7 @@ public:
     void setTokens(const QString access, const QString& renew, bool notify = false);
     void setState(State newState);
     Assets* getAssets();
+    Currencies* getCurrencies();
 
 signals:
     void addressChanged(const QUrl& path);
@@ -56,6 +59,7 @@ signals:
 
 public:
     Assets assets;
+    Currencies currencies;
 
 private slots:
     void requestAssets();
@@ -67,7 +71,10 @@ private:
     void onPollSuccess(const QVariantMap& data);
     void onPollError(const QString& err, const std::optional<QVariantMap>& data);
     bool handleChanges(const QVariantMap& changes);
+    bool handleAssetChanges(const QVariantMap& changes);
+    bool handleCurrenciesChanges(const QVariantMap& changes);
     void resetAllModels();
+    void requestCurrencies();
 
 private:
     QUrl address;
@@ -77,6 +84,7 @@ private:
     std::shared_ptr<API> api;
     QTimer firstPoll;
     unsigned int pollRequestId;
+    bool requestingCurrencies;
 };
 
 }