refactor: replace groupedRegions with internal list model

client/core/controllers/coreController.cpp

@@ -94,9 +94,6 @@ void CoreController::initModels()
     m_apiCountryModel.reset(new ApiCountryModel(this));
     m_engine->rootContext()->setContextProperty("ApiCountryModel", m_apiCountryModel.get());
 
-    m_apiCountriesRegionModel.reset(new ApiCountriesRegionModel(m_apiCountryModel.get(), this));
-    m_engine->rootContext()->setContextProperty("ApiCountriesRegionModel", m_apiCountriesRegionModel.get());
-
     m_apiAccountInfoModel.reset(new ApiAccountInfoModel(this));
     m_engine->rootContext()->setContextProperty("ApiAccountInfoModel", m_apiAccountInfoModel.get());
 

client/core/controllers/coreController.h

@@ -33,7 +33,6 @@
 #endif
 #include "ui/models/api/apiAccountInfoModel.h"
 #include "ui/models/api/apiCountryModel.h"
-#include "ui/models/api/apiCountriesRegionModel.h"
 #include "ui/models/api/apiDevicesModel.h"
 #include "ui/models/api/apiServicesModel.h"
 #include "ui/models/appSplitTunnelingModel.h"
@@ -135,7 +134,6 @@ private:
 
     QSharedPointer<ApiServicesModel> m_apiServicesModel;
     QSharedPointer<ApiCountryModel> m_apiCountryModel;
-    QSharedPointer<ApiCountriesRegionModel> m_apiCountriesRegionModel;
     QSharedPointer<ApiAccountInfoModel> m_apiAccountInfoModel;
     QSharedPointer<ApiDevicesModel> m_apiDevicesModel;
 

client/ui/models/api/apiCountriesRegionModel.cpp

@@ -1,367 +0,0 @@
-#include "apiCountriesRegionModel.h"
-
-#include <utility>
-#include <QSettings>
-#include <QVariantMap>
-
-#include "apiCountryModel.h"
-
-ApiCountriesRegionModel::ApiCountriesRegionModel(ApiCountryModel *sourceModel, QObject *parent)
-    : QAbstractListModel(parent), m_sourceModel(sourceModel)
-{
-    m_regionDefinitions = {
-        {
-            "Europe",
-            {
-                {"BE", "Belgium", "Бельгия"},
-                {"EE", "Estonia", "Эстония"},
-                {"FI", "Finland", "Финляндия"},
-                {"FR", "France", "Франция"},
-                {"GE", "Georgia", "Грузия"},
-                {"DE", "Germany", "Германия"},
-                {"NL", "Netherlands", "Нидерланды"},
-                {"PL", "Poland", "Польша"},
-                {"RU", "Russia", "Россия"},
-                {"ES", "Spain", "Испания"},
-                {"SE", "Sweden", "Швеция"},
-                {"CH", "Switzerland", "Швейцария"},
-                {"TR", "Turkey", "Турция"},
-            },
-        },
-        {
-            "America",
-            {
-                {"BR", "Brazil", "Бразилия"},
-                {"CA", "Canada East", "Канада"},
-                {"US", "USA East", "США"},
-                {"US", "USA West", "США"},
-            },
-        },
-        {
-            "Asia",
-            {
-                {"AE", "UAE", "ОАЭ"},
-                {"JP", "Japan", "Япония"},
-                {"KZ", "Kazakhstan", "Казахстан"},
-                {"KR", "South Korea", "Южная Корея"},
-                {"SG", "Singapore", "Сингапур"},
-            },
-        },
-        {
-            "Oceania and Africa",
-            {
-                {"AU", "Australia", "Австралия"},
-                {"NZ", "New Zealand", "Новая Зеландия"},
-                {"ZA", "South Africa", "Южная Африка"},
-            },
-        },
-    };
-
-    if (m_sourceModel) {
-        connect(m_sourceModel, &QAbstractItemModel::modelReset, this, &ApiCountriesRegionModel::rebuildModel);
-        connect(m_sourceModel, &QAbstractItemModel::rowsInserted, this, &ApiCountriesRegionModel::rebuildModel);
-        connect(m_sourceModel, &QAbstractItemModel::rowsRemoved, this, &ApiCountriesRegionModel::rebuildModel);
-        connect(m_sourceModel, &QAbstractItemModel::dataChanged, this, &ApiCountriesRegionModel::rebuildModel);
-    }
-
-    loadRegionExpansionState();
-    rebuildModel();
-}
-
-int ApiCountriesRegionModel::rowCount(const QModelIndex &parent) const
-{
-    Q_UNUSED(parent)
-    return m_regions.size();
-}
-
-QVariant ApiCountriesRegionModel::data(const QModelIndex &index, int role) const
-{
-    if (!index.isValid() || index.row() < 0 || index.row() >= static_cast<int>(rowCount())) {
-        return QVariant();
-    }
-
-    const RegionData &region = m_regions.at(index.row());
-    switch (role) {
-    case RegionNameRole:
-        return region.regionName;
-    case CountriesRole:
-        return region.countries;
-    default:
-        return QVariant();
-    }
-}
-
-QString ApiCountriesRegionModel::searchText() const
-{
-    return m_searchText;
-}
-
-void ApiCountriesRegionModel::setSearchText(const QString &text)
-{
-    if (m_searchText == text) {
-        return;
-    }
-
-    m_searchText = text;
-    emit searchTextChanged();
-    rebuildModel();
-}
-
-bool ApiCountriesRegionModel::isRegionExpanded(const QString &regionName) const
-{
-    if (isSearchActive()) {
-        return true;
-    }
-    return m_regionsExpanded.contains(regionName) ? m_regionsExpanded.value(regionName) : true;
-}
-
-void ApiCountriesRegionModel::toggleRegionExpanded(const QString &regionName)
-{
-    if (regionName.isEmpty() || isSearchActive()) {
-        return;
-    }
-
-    const bool currentValue = isRegionExpanded(regionName);
-    m_regionsExpanded.insert(regionName, !currentValue);
-    saveRegionExpansionState();
-
-    beginResetModel();
-    endResetModel();
-}
-
-QHash<int, QByteArray> ApiCountriesRegionModel::roleNames() const
-{
-    QHash<int, QByteArray> roles;
-    roles[RegionNameRole] = "regionName";
-    roles[CountriesRole] = "countries";
-    return roles;
-}
-
-QString ApiCountriesRegionModel::normalizeCountryCode(const QString &countryCode) const
-{
-    return countryCode.trimmed().toUpper();
-}
-
-QString ApiCountriesRegionModel::extractCountryIsoCode(const QString &countryCode) const
-{
-    const QString normalizedCode = normalizeCountryCode(countryCode);
-
-    for (int i = 0; i + 1 < normalizedCode.size(); ++i) {
-        const QChar first = normalizedCode.at(i);
-        const QChar second = normalizedCode.at(i + 1);
-        if (first.isUpper() && second.isUpper()) {
-            return normalizedCode.mid(i, 2);
-        }
-    }
-
-    return normalizedCode;
-}
-
-QString ApiCountriesRegionModel::normalizeCountryName(const QString &countryName) const
-{
-    return countryName.trimmed().toLower();
-}
-
-QString ApiCountriesRegionModel::normalizeSearchComparableText(const QString &textValue) const
-{
-    QString normalizedText = normalizeCountryName(textValue);
-    normalizedText.replace(QChar(0x0451), QChar(0x0435)); // ё -> е
-    normalizedText.replace(QChar(0x0439), QChar(0x0438)); // й -> и
-
-    QString result;
-    result.reserve(normalizedText.size());
-    for (int i = 0; i < normalizedText.size(); ++i) {
-        const QChar currentChar = normalizedText.at(i);
-        const bool isSeparator = currentChar == '.' || currentChar == '-';
-
-        if (!isSeparator) {
-            result.append(currentChar);
-            continue;
-        }
-
-        const QChar prevChar = i > 0 ? normalizedText.at(i - 1) : QChar();
-        const QChar nextChar = i + 1 < normalizedText.size() ? normalizedText.at(i + 1) : QChar();
-        const bool hasSeparatorNeighbor =
-                prevChar == '.' || prevChar == '-' || nextChar == '.' || nextChar == '-';
-
-        if (hasSeparatorNeighbor) {
-            result.append(currentChar);
-        }
-    }
-
-    return result;
-}
-
-bool ApiCountriesRegionModel::isCountryMatchingSearch(const QString &countryName, const QString &regionCountryCode,
-                                                      const QString &sourceCountryCode, const QString &ruCountryName) const
-{
-    const QString normalizedSearchText = normalizeSearchComparableText(m_searchText);
-    if (normalizedSearchText.isEmpty()) {
-        return true;
-    }
-
-    const QString normalizedCountryName = normalizeSearchComparableText(countryName);
-    const QString normalizedRuCountryName = normalizeSearchComparableText(ruCountryName);
-    const QString normalizedRegionCountryCode = normalizeCountryCode(regionCountryCode).toLower();
-    const QString normalizedSourceCountryCode = normalizeCountryCode(sourceCountryCode).toLower();
-
-    return normalizedCountryName.startsWith(normalizedSearchText) || normalizedRuCountryName.startsWith(normalizedSearchText) ||
-           normalizedRegionCountryCode.startsWith(normalizedSearchText) ||
-           normalizedSourceCountryCode.startsWith(normalizedSearchText);
-}
-
-bool ApiCountriesRegionModel::isSearchActive() const
-{
-    return !normalizeSearchComparableText(m_searchText).isEmpty();
-}
-
-QString ApiCountriesRegionModel::getDisplayCountryName(const QString &countryName) const
-{
-    const QString p2pPrefix = "[P2P] ";
-    if (countryName.startsWith(p2pPrefix)) {
-        return countryName.mid(p2pPrefix.size()) + " [P2P]";
-    }
-    return countryName;
-}
-
-bool ApiCountriesRegionModel::getSourceCountry(int sourceIndex, SourceCountry &country) const
-{
-    if (!m_sourceModel || sourceIndex < 0 || sourceIndex >= m_sourceModel->rowCount()) {
-        return false;
-    }
-
-    const QModelIndex modelIndex = m_sourceModel->index(sourceIndex, 0);
-    if (!modelIndex.isValid()) {
-        return false;
-    }
-
-    country.countryName = m_sourceModel->data(modelIndex, ApiCountryModel::CountryNameRole).toString();
-    country.countryCode = m_sourceModel->data(modelIndex, ApiCountryModel::CountryCodeRole).toString();
-    country.countryImageCode = m_sourceModel->data(modelIndex, ApiCountryModel::CountryImageCodeRole).toString();
-
-    return !country.countryName.isEmpty() && !country.countryCode.isEmpty();
-}
-
-int ApiCountriesRegionModel::findCountryIndexByRef(const CountryRef &countryRef, const QHash<int, bool> &usedIndices) const
-{
-    if (!m_sourceModel) {
-        return -1;
-    }
-
-    const QString expectedCode = normalizeCountryCode(countryRef.code);
-    const QString expectedName = normalizeCountryName(countryRef.name);
-
-    const int countriesCount = m_sourceModel->rowCount();
-    for (int i = 0; i < countriesCount; ++i) {
-        if (usedIndices.value(i)) {
-            continue;
-        }
-
-        SourceCountry sourceCountry;
-        if (!getSourceCountry(i, sourceCountry)) {
-            continue;
-        }
-
-        const QString modelCode = normalizeCountryCode(sourceCountry.countryCode);
-        const QString modelIsoCode = extractCountryIsoCode(sourceCountry.countryCode);
-        const QString modelName = normalizeCountryName(sourceCountry.countryName);
-
-        if (!expectedName.isEmpty() && modelName == expectedName) {
-            return i;
-        }
-
-        if (!expectedCode.isEmpty() && (modelCode == expectedCode || modelIsoCode == expectedCode)) {
-            return i;
-        }
-    }
-
-    return -1;
-}
-
-void ApiCountriesRegionModel::rebuildModel()
-{
-    beginResetModel();
-
-    QVector<RegionData> regions;
-    regions.reserve(m_regionDefinitions.size());
-    const auto &regionDefinitions = std::as_const(m_regionDefinitions);
-    for (const RegionDefinition &regionDefinition : regionDefinitions) {
-        RegionData region;
-        region.regionName = regionDefinition.regionName;
-        regions.push_back(region);
-    }
-
-    QHash<int, bool> usedIndices;
-    for (int regionIndex = 0; regionIndex < m_regionDefinitions.size(); ++regionIndex) {
-        const RegionDefinition &regionDefinition = m_regionDefinitions.at(regionIndex);
-        for (const CountryRef &countryRef : regionDefinition.countries) {
-            const int sourceIndex = findCountryIndexByRef(countryRef, usedIndices);
-
-            if (sourceIndex < 0) {
-                if (isCountryMatchingSearch(countryRef.name, countryRef.code, countryRef.code, countryRef.ruName)) {
-                    QVariantMap fallbackCountry;
-                    fallbackCountry.insert("sourceIndex", -1);
-                    fallbackCountry.insert("countryName", getDisplayCountryName(countryRef.name));
-                    fallbackCountry.insert("sourceCountryName", countryRef.name);
-                    fallbackCountry.insert("countryCode", countryRef.code);
-                    fallbackCountry.insert("countryImageCode", extractCountryIsoCode(countryRef.code));
-                    fallbackCountry.insert("isAvailable", false);
-                    regions[regionIndex].countries.push_back(fallbackCountry);
-                }
-                continue;
-            }
-
-            SourceCountry sourceCountry;
-            if (!getSourceCountry(sourceIndex, sourceCountry)) {
-                continue;
-            }
-
-            const QString displayCountryName = getDisplayCountryName(sourceCountry.countryName);
-            if (!isCountryMatchingSearch(displayCountryName, countryRef.code, sourceCountry.countryCode, countryRef.ruName)) {
-                continue;
-            }
-
-            QVariantMap countryData;
-            countryData.insert("sourceIndex", sourceIndex);
-            countryData.insert("countryName", displayCountryName);
-            countryData.insert("sourceCountryName", sourceCountry.countryName);
-            countryData.insert("countryCode", sourceCountry.countryCode);
-            countryData.insert("countryImageCode", extractCountryIsoCode(sourceCountry.countryImageCode));
-            countryData.insert("isAvailable", true);
-            regions[regionIndex].countries.push_back(countryData);
-            usedIndices.insert(sourceIndex, true);
-        }
-    }
-
-    m_regions.clear();
-    m_regions.reserve(regions.size());
-    const auto &regionsConst = std::as_const(regions);
-    for (const RegionData &region : regionsConst) {
-        if (!region.countries.isEmpty()) {
-            m_regions.push_back(region);
-        }
-    }
-
-    endResetModel();
-}
-
-void ApiCountriesRegionModel::loadRegionExpansionState()
-{
-    QSettings settings;
-    const QVariantMap stored = settings.value("PageSettingsApiAvailableCountries/regionsExpanded").toMap();
-    m_regionsExpanded.clear();
-    for (auto it = stored.constBegin(); it != stored.constEnd(); ++it) {
-        m_regionsExpanded.insert(it.key(), it.value().toBool());
-    }
-}
-
-void ApiCountriesRegionModel::saveRegionExpansionState() const
-{
-    QVariantMap stored;
-    for (auto it = m_regionsExpanded.constBegin(); it != m_regionsExpanded.constEnd(); ++it) {
-        stored.insert(it.key(), it.value());
-    }
-
-    QSettings settings;
-    settings.setValue("PageSettingsApiAvailableCountries/regionsExpanded", stored);
-}

client/ui/models/api/apiCountriesRegionModel.h

@@ -1,87 +0,0 @@
-#ifndef APICOUNTRIESREGIONMODEL_H
-#define APICOUNTRIESREGIONMODEL_H
-
-#include <QAbstractListModel>
-#include <QHash>
-#include <QVector>
-#include <QString>
-
-class ApiCountryModel;
-
-class ApiCountriesRegionModel : public QAbstractListModel
-{
-    Q_OBJECT
-    Q_PROPERTY(QString searchText READ searchText WRITE setSearchText NOTIFY searchTextChanged)
-
-public:
-    enum Roles {
-        RegionNameRole = Qt::UserRole + 1,
-        CountriesRole
-    };
-
-    explicit ApiCountriesRegionModel(ApiCountryModel *sourceModel, QObject *parent = nullptr);
-
-    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
-    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
-
-    QString searchText() const;
-    void setSearchText(const QString &text);
-    Q_INVOKABLE bool isRegionExpanded(const QString &regionName) const;
-    Q_INVOKABLE void toggleRegionExpanded(const QString &regionName);
-
-signals:
-    void searchTextChanged();
-
-protected:
-    QHash<int, QByteArray> roleNames() const override;
-
-private:
-    struct CountryRef
-    {
-        QString code;
-        QString name;
-        QString ruName;
-    };
-
-    struct RegionDefinition
-    {
-        QString regionName;
-        QVector<CountryRef> countries;
-    };
-
-    struct SourceCountry
-    {
-        QString countryName;
-        QString countryCode;
-        QString countryImageCode;
-    };
-
-    struct RegionData
-    {
-        QString regionName;
-        QVariantList countries;
-    };
-
-    QString normalizeCountryCode(const QString &countryCode) const;
-    QString extractCountryIsoCode(const QString &countryCode) const;
-    QString normalizeCountryName(const QString &countryName) const;
-    QString normalizeSearchComparableText(const QString &textValue) const;
-    bool isCountryMatchingSearch(const QString &countryName, const QString &regionCountryCode, const QString &sourceCountryCode,
-                                 const QString &ruCountryName) const;
-    QString getDisplayCountryName(const QString &countryName) const;
-
-    bool getSourceCountry(int sourceIndex, SourceCountry &country) const;
-    int findCountryIndexByRef(const CountryRef &countryRef, const QHash<int, bool> &usedIndices) const;
-    void rebuildModel();
-    void loadRegionExpansionState();
-    void saveRegionExpansionState() const;
-    bool isSearchActive() const;
-
-    QVector<RegionDefinition> m_regionDefinitions;
-    QVector<RegionData> m_regions;
-    ApiCountryModel *m_sourceModel = nullptr;
-    QString m_searchText;
-    QHash<QString, bool> m_regionsExpanded;
-};
-
-#endif // APICOUNTRIESREGIONMODEL_H

client/ui/models/api/apiCountryModel.cpp

@@ -1,21 +1,160 @@
 #include "apiCountryModel.h"
 
 #include <QJsonObject>
+#include <QSettings>
+#include <utility>
 
 #include "core/api/apiDefs.h"
-#include "logger.h"
 
 namespace
 {
-    Logger logger("ApiCountryModel");
+constexpr QLatin1String countryConfig("country_config");
 
-    constexpr QLatin1String countryConfig("country_config");
-}
-
-ApiCountryModel::ApiCountryModel(QObject *parent) : QAbstractListModel(parent)
+struct RegionRowData
 {
+    bool isRegionHeader = false;
+    QString regionName;
+    bool isExpanded = true;
+    int sourceIndex = -1;
+    QString countryName;
+    QString sourceCountryName;
+    QString countryCode;
+    QString countryImageCode;
+};
 }
 
+class ApiCountryModel::RegionRowsModel : public QAbstractListModel
+{
+public:
+    enum Roles {
+        RowTypeRole = Qt::UserRole + 1,
+        RegionNameRole,
+        IsExpandedRole,
+        SourceIndexRole,
+        CountryNameRole,
+        SourceCountryNameRole,
+        CountryCodeRole,
+        CountryImageCodeRole
+    };
+
+    explicit RegionRowsModel(QObject *parent = nullptr) : QAbstractListModel(parent) {}
+
+    int rowCount(const QModelIndex &parent = QModelIndex()) const override
+    {
+        Q_UNUSED(parent)
+        return m_rows.size();
+    }
+
+    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override
+    {
+        if (!index.isValid() || index.row() < 0 || index.row() >= m_rows.size()) {
+            return QVariant();
+        }
+
+        const RegionRowData &row = m_rows.at(index.row());
+        switch (role) {
+        case RowTypeRole:
+            return row.isRegionHeader ? "region" : "country";
+        case RegionNameRole:
+            return row.regionName;
+        case IsExpandedRole:
+            return row.isExpanded;
+        case SourceIndexRole:
+            return row.sourceIndex;
+        case CountryNameRole:
+            return row.countryName;
+        case SourceCountryNameRole:
+            return row.sourceCountryName;
+        case CountryCodeRole:
+            return row.countryCode;
+        case CountryImageCodeRole:
+            return row.countryImageCode;
+        default:
+            return QVariant();
+        }
+    }
+
+    QHash<int, QByteArray> roleNames() const override
+    {
+        QHash<int, QByteArray> roles;
+        roles[RowTypeRole] = "rowType";
+        roles[RegionNameRole] = "regionName";
+        roles[IsExpandedRole] = "isExpanded";
+        roles[SourceIndexRole] = "sourceIndex";
+        roles[CountryNameRole] = "countryName";
+        roles[SourceCountryNameRole] = "sourceCountryName";
+        roles[CountryCodeRole] = "countryCode";
+        roles[CountryImageCodeRole] = "countryImageCode";
+        return roles;
+    }
+
+    void setRows(QVector<RegionRowData> &&rows)
+    {
+        beginResetModel();
+        m_rows = std::move(rows);
+        endResetModel();
+    }
+
+private:
+    QVector<RegionRowData> m_rows;
+};
+
+ApiCountryModel::ApiCountryModel(QObject *parent)
+    : QAbstractListModel(parent), m_regionRowsModel(std::make_unique<RegionRowsModel>(this))
+{
+    m_regionDefinitions = {
+        {
+            "Europe",
+            {
+                {"BE", "Belgium", "Бельгия"},
+                {"EE", "Estonia", "Эстония"},
+                {"FI", "Finland", "Финляндия"},
+                {"FR", "France", "Франция"},
+                {"GE", "Georgia", "Грузия"},
+                {"DE", "Germany", "Германия"},
+                {"NL", "Netherlands", "Нидерланды"},
+                {"PL", "Poland", "Польша"},
+                {"RU", "Russia", "Россия"},
+                {"ES", "Spain", "Испания"},
+                {"SE", "Sweden", "Швеция"},
+                {"CH", "Switzerland", "Швейцария"},
+                {"TR", "Turkey", "Турция"},
+            },
+        },
+        {
+            "America",
+            {
+                {"BR", "Brazil", "Бразилия"},
+                {"CA", "Canada East", "Канада"},
+                {"US", "USA East", "США"},
+            },
+        },
+        {
+            "Asia",
+            {
+                {"AE", "UAE", "ОАЭ"},
+                {"JP", "Japan", "Япония"},
+                {"KZ", "Kazakhstan", "Казахстан"},
+                {"KR", "South Korea", "Южная Корея"},
+                {"SG", "Singapore", "Сингапур"},
+            },
+        },
+        {
+            "Oceania and Africa",
+            {
+                {"AU", "Australia", "Австралия"},
+                {"NZ", "New Zealand", "Новая Зеландия"},
+                {"ZA", "South Africa", "Южная Африка"},
+            },
+        },
+    };
+
+    loadRegionExpansionState();
+    rebuildGroupedRegions();
+}
+
+ApiCountryModel::~ApiCountryModel() = default;
+
 int ApiCountryModel::rowCount(const QModelIndex &parent) const
 {
     Q_UNUSED(parent)
@@ -24,32 +163,28 @@ int ApiCountryModel::rowCount(const QModelIndex &parent) const
 
 QVariant ApiCountryModel::data(const QModelIndex &index, int role) const
 {
-    if (!index.isValid() || index.row() < 0 || index.row() >= static_cast<int>(rowCount()))
+    if (!index.isValid() || index.row() < 0 || index.row() >= static_cast<int>(rowCount())) {
         return QVariant();
+    }
 
-    CountryInfo countryInfo = m_countries.at(index.row());
-    IssuedConfigInfo issuedConfigInfo = m_issuedConfigs.value(countryInfo.countryCode);
-    bool isIssued = issuedConfigInfo.sourceType == countryConfig;
+    const CountryInfo &countryInfo = m_countries.at(index.row());
+    const IssuedConfigInfo issuedConfigInfo = m_issuedConfigs.value(countryInfo.countryCode);
+    const bool isIssued = issuedConfigInfo.sourceType == countryConfig;
 
     switch (role) {
-    case CountryCodeRole: {
+    case CountryCodeRole:
         return countryInfo.countryCode;
-    }
-    case CountryNameRole: {
+    case CountryNameRole:
         return countryInfo.countryName;
-    }
-    case CountryImageCodeRole: {
+    case CountryImageCodeRole:
         return countryInfo.countryCode.toUpper();
-    }
-    case IsIssuedRole: {
+    case IsIssuedRole:
         return isIssued;
-    }
-    case IsWorkerExpiredRole: {
+    case IsWorkerExpiredRole:
         return issuedConfigInfo.lastDownloaded < issuedConfigInfo.workerLastUpdated;
+    default:
+        return QVariant();
     }
-    }
-
-    return QVariant();
 }
 
 void ApiCountryModel::updateModel(const QJsonArray &countries, const QString &currentCountryCode)
@@ -57,9 +192,9 @@ void ApiCountryModel::updateModel(const QJsonArray &countries, const QString &cu
     beginResetModel();
 
     m_countries.clear();
-    for (int i = 0; i < countries.size(); i++) {
+    for (int i = 0; i < countries.size(); ++i) {
         CountryInfo countryInfo;
-        QJsonObject countryObject = countries.at(i).toObject();
+        const QJsonObject countryObject = countries.at(i).toObject();
 
         countryInfo.countryName = countryObject.value(apiDefs::key::serverCountryName).toString();
         countryInfo.countryCode = countryObject.value(apiDefs::key::serverCountryCode).toString();
@@ -72,6 +207,7 @@ void ApiCountryModel::updateModel(const QJsonArray &countries, const QString &cu
     }
 
     endResetModel();
+    rebuildGroupedRegions();
 }
 
 void ApiCountryModel::updateIssuedConfigsInfo(const QJsonArray &issuedConfigs)
@@ -79,9 +215,9 @@ void ApiCountryModel::updateIssuedConfigsInfo(const QJsonArray &issuedConfigs)
     beginResetModel();
 
     m_issuedConfigs.clear();
-    for (int i = 0; i < issuedConfigs.size(); i++) {
+    for (int i = 0; i < issuedConfigs.size(); ++i) {
         IssuedConfigInfo issuedConfigInfo;
-        QJsonObject issuedConfigObject = issuedConfigs.at(i).toObject();
+        const QJsonObject issuedConfigObject = issuedConfigs.at(i).toObject();
 
         if (issuedConfigObject.value(apiDefs::key::sourceType).toString() != countryConfig) {
             continue;
@@ -110,6 +246,52 @@ void ApiCountryModel::setCurrentIndex(const int i)
     emit currentIndexChanged(m_currentIndex);
 }
 
+QString ApiCountryModel::searchText() const
+{
+    return m_searchText;
+}
+
+void ApiCountryModel::setSearchText(const QString &text)
+{
+    if (m_searchText == text) {
+        return;
+    }
+
+    m_searchText = text;
+    emit searchTextChanged();
+    rebuildGroupedRegions();
+}
+
+QAbstractListModel *ApiCountryModel::regionRowsModel() const
+{
+    return m_regionRowsModel.get();
+}
+
+bool ApiCountryModel::hasVisibleRegions() const
+{
+    return m_regionRowsModel && m_regionRowsModel->rowCount() > 0;
+}
+
+bool ApiCountryModel::isRegionExpanded(const QString &regionName) const
+{
+    if (isSearchActive()) {
+        return true;
+    }
+    return m_regionsExpanded.contains(regionName) ? m_regionsExpanded.value(regionName) : true;
+}
+
+void ApiCountryModel::toggleRegionExpanded(const QString &regionName)
+{
+    if (regionName.isEmpty() || isSearchActive()) {
+        return;
+    }
+
+    const bool currentValue = isRegionExpanded(regionName);
+    m_regionsExpanded.insert(regionName, !currentValue);
+    saveRegionExpansionState();
+    rebuildGroupedRegions();
+}
+
 QHash<int, QByteArray> ApiCountryModel::roleNames() const
 {
     QHash<int, QByteArray> roles;
@@ -120,3 +302,192 @@ QHash<int, QByteArray> ApiCountryModel::roleNames() const
     roles[IsWorkerExpiredRole] = "isWorkerExpired";
     return roles;
 }
+
+QString ApiCountryModel::normalizeCountryCode(const QString &countryCode) const
+{
+    return countryCode.trimmed().toUpper();
+}
+
+QString ApiCountryModel::extractCountryIsoCode(const QString &countryCode) const
+{
+    const QString normalizedCode = normalizeCountryCode(countryCode);
+    for (int i = 0; i + 1 < normalizedCode.size(); ++i) {
+        const QChar first = normalizedCode.at(i);
+        const QChar second = normalizedCode.at(i + 1);
+        if (first.isUpper() && second.isUpper()) {
+            return normalizedCode.mid(i, 2);
+        }
+    }
+    return normalizedCode;
+}
+
+QString ApiCountryModel::normalizeCountryName(const QString &countryName) const
+{
+    return countryName.trimmed().toLower();
+}
+
+QString ApiCountryModel::normalizeSearchComparableText(const QString &textValue) const
+{
+    QString normalizedText = normalizeCountryName(textValue);
+    normalizedText.replace(QChar(0x0451), QChar(0x0435)); // ё -> е
+    normalizedText.replace(QChar(0x0439), QChar(0x0438)); // й -> и
+
+    QString result;
+    result.reserve(normalizedText.size());
+    for (int i = 0; i < normalizedText.size(); ++i) {
+        const QChar currentChar = normalizedText.at(i);
+        const bool isSeparator = currentChar == '.' || currentChar == '-';
+
+        if (!isSeparator) {
+            result.append(currentChar);
+            continue;
+        }
+
+        const QChar prevChar = i > 0 ? normalizedText.at(i - 1) : QChar();
+        const QChar nextChar = i + 1 < normalizedText.size() ? normalizedText.at(i + 1) : QChar();
+        const bool hasSeparatorNeighbor = prevChar == '.' || prevChar == '-' || nextChar == '.' || nextChar == '-';
+        if (hasSeparatorNeighbor) {
+            result.append(currentChar);
+        }
+    }
+
+    return result;
+}
+
+bool ApiCountryModel::isCountryMatchingSearch(const QString &countryName, const QString &regionCountryCode,
+                                              const QString &sourceCountryCode, const QString &ruCountryName,
+                                              const QString &normalizedSearchText) const
+{
+    if (normalizedSearchText.isEmpty()) {
+        return true;
+    }
+
+    const QString normalizedCountryName = normalizeSearchComparableText(countryName);
+    const QString normalizedRuCountryName = normalizeSearchComparableText(ruCountryName);
+    const QString normalizedRegionCountryCode = normalizeCountryCode(regionCountryCode).toLower();
+    const QString normalizedSourceCountryCode = normalizeCountryCode(sourceCountryCode).toLower();
+
+    return normalizedCountryName.startsWith(normalizedSearchText) || normalizedRuCountryName.startsWith(normalizedSearchText) ||
+           normalizedRegionCountryCode.startsWith(normalizedSearchText) ||
+           normalizedSourceCountryCode.startsWith(normalizedSearchText);
+}
+
+QString ApiCountryModel::getDisplayCountryName(const QString &countryName) const
+{
+    const QString p2pPrefix = "[P2P] ";
+    if (countryName.startsWith(p2pPrefix)) {
+        return countryName.mid(p2pPrefix.size()) + " [P2P]";
+    }
+    return countryName;
+}
+
+int ApiCountryModel::findCountryIndexByRef(const CountryRef &countryRef, const QHash<int, bool> &usedIndices) const
+{
+    const QString expectedCode = normalizeCountryCode(countryRef.code);
+    const QString expectedName = normalizeCountryName(countryRef.name);
+    const int countriesCount = m_countries.size();
+
+    for (int i = 0; i < countriesCount; ++i) {
+        if (usedIndices.value(i)) {
+            continue;
+        }
+
+        const CountryInfo &country = m_countries.at(i);
+        const QString modelCode = normalizeCountryCode(country.countryCode);
+        const QString modelIsoCode = extractCountryIsoCode(country.countryCode);
+        const QString modelName = normalizeCountryName(country.countryName);
+
+        if (!expectedName.isEmpty() && modelName == expectedName) {
+            return i;
+        }
+        if (!expectedCode.isEmpty() && (modelCode == expectedCode || modelIsoCode == expectedCode)) {
+            return i;
+        }
+    }
+
+    return -1;
+}
+
+void ApiCountryModel::rebuildGroupedRegions()
+{
+    QVector<RegionRowData> rows;
+    QHash<int, bool> usedIndices;
+    const QString normalizedSearchText = normalizeSearchComparableText(m_searchText);
+
+    for (int regionIndex = 0; regionIndex < m_regionDefinitions.size(); ++regionIndex) {
+        const RegionDefinition &regionDefinition = m_regionDefinitions.at(regionIndex);
+        QVector<RegionRowData> countries;
+
+        const auto &countryRefs = std::as_const(regionDefinition.countries);
+        for (const CountryRef &countryRef : countryRefs) {
+            const int sourceIndex = findCountryIndexByRef(countryRef, usedIndices);
+            if (sourceIndex < 0) {
+                continue;
+            }
+
+            const CountryInfo &sourceCountry = m_countries.at(sourceIndex);
+            const QString displayCountryName = getDisplayCountryName(sourceCountry.countryName);
+            if (!isCountryMatchingSearch(displayCountryName, countryRef.code, sourceCountry.countryCode, countryRef.ruName,
+                                         normalizedSearchText)) {
+                continue;
+            }
+
+            RegionRowData countryRow;
+            countryRow.isRegionHeader = false;
+            countryRow.regionName = regionDefinition.regionName;
+            countryRow.sourceIndex = sourceIndex;
+            countryRow.countryName = displayCountryName;
+            countryRow.sourceCountryName = sourceCountry.countryName;
+            countryRow.countryCode = sourceCountry.countryCode;
+            countryRow.countryImageCode = extractCountryIsoCode(sourceCountry.countryCode);
+            countries.push_back(std::move(countryRow));
+            usedIndices.insert(sourceIndex, true);
+        }
+
+        if (!countries.isEmpty()) {
+            const bool expanded = isRegionExpanded(regionDefinition.regionName);
+
+            RegionRowData headerRow;
+            headerRow.isRegionHeader = true;
+            headerRow.regionName = regionDefinition.regionName;
+            headerRow.isExpanded = expanded;
+            rows.push_back(std::move(headerRow));
+
+            if (expanded) {
+                for (RegionRowData &countryRow : countries) {
+                    countryRow.isExpanded = expanded;
+                    rows.push_back(std::move(countryRow));
+                }
+            }
+        }
+    }
+
+    m_regionRowsModel->setRows(std::move(rows));
+    emit regionRowsChanged();
+}
+
+void ApiCountryModel::loadRegionExpansionState()
+{
+    QSettings settings;
+    const QVariantMap stored = settings.value("PageSettingsApiAvailableCountries/regionsExpanded").toMap();
+    m_regionsExpanded.clear();
+    for (auto it = stored.constBegin(); it != stored.constEnd(); ++it) {
+        m_regionsExpanded.insert(it.key(), it.value().toBool());
+    }
+}
+
+void ApiCountryModel::saveRegionExpansionState() const
+{
+    QVariantMap stored;
+    for (auto it = m_regionsExpanded.constBegin(); it != m_regionsExpanded.constEnd(); ++it) {
+        stored.insert(it.key(), it.value());
+    }
+
+    QSettings settings;
+    settings.setValue("PageSettingsApiAvailableCountries/regionsExpanded", stored);
+}
+
+bool ApiCountryModel::isSearchActive() const
+{
+    return !normalizeSearchComparableText(m_searchText).isEmpty();
+}

client/ui/models/api/apiCountryModel.h

@@ -4,6 +4,7 @@
 #include <QAbstractListModel>
 #include <QHash>
 #include <QJsonArray>
+#include <memory>
 
 class ApiCountryModel : public QAbstractListModel
 {
@@ -19,12 +20,16 @@ public:
     };
 
     explicit ApiCountryModel(QObject *parent = nullptr);
+    ~ApiCountryModel() override;
 
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
 
     QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
 
     Q_PROPERTY(int currentIndex READ getCurrentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)
+    Q_PROPERTY(QString searchText READ searchText WRITE setSearchText NOTIFY searchTextChanged)
+    Q_PROPERTY(QAbstractListModel *regionRowsModel READ regionRowsModel CONSTANT)
+    Q_PROPERTY(bool hasVisibleRegions READ hasVisibleRegions NOTIFY regionRowsChanged)
 
 public slots:
     void updateModel(const QJsonArray &countries, const QString &currentCountryCode);
@@ -32,9 +37,17 @@ public slots:
 
     int getCurrentIndex();
     void setCurrentIndex(const int i);
+    QString searchText() const;
+    void setSearchText(const QString &text);
+    QAbstractListModel *regionRowsModel() const;
+    bool hasVisibleRegions() const;
+    Q_INVOKABLE bool isRegionExpanded(const QString &regionName) const;
+    Q_INVOKABLE void toggleRegionExpanded(const QString &regionName);
 
 signals:
     void currentIndexChanged(const int index);
+    void searchTextChanged();
+    void regionRowsChanged();
 
 protected:
     QHash<int, QByteArray> roleNames() const override;
@@ -55,9 +68,40 @@ private:
         QString countryCode;
     };
 
+    struct CountryRef
+    {
+        QString code;
+        QString name;
+        QString ruName;
+    };
+
+    struct RegionDefinition
+    {
+        QString regionName;
+        QVector<CountryRef> countries;
+    };
+
     QVector<CountryInfo> m_countries;
     QHash<QString, IssuedConfigInfo> m_issuedConfigs;
-    int m_currentIndex;
+    int m_currentIndex = -1;
+    QString m_searchText;
+    QVector<RegionDefinition> m_regionDefinitions;
+    QHash<QString, bool> m_regionsExpanded;
+    class RegionRowsModel;
+    std::unique_ptr<RegionRowsModel> m_regionRowsModel;
+
+    QString normalizeCountryCode(const QString &countryCode) const;
+    QString extractCountryIsoCode(const QString &countryCode) const;
+    QString normalizeCountryName(const QString &countryName) const;
+    QString normalizeSearchComparableText(const QString &textValue) const;
+    bool isCountryMatchingSearch(const QString &countryName, const QString &regionCountryCode, const QString &sourceCountryCode,
+                                 const QString &ruCountryName, const QString &normalizedSearchText) const;
+    QString getDisplayCountryName(const QString &countryName) const;
+    int findCountryIndexByRef(const CountryRef &countryRef, const QHash<int, bool> &usedIndices) const;
+    void rebuildGroupedRegions();
+    void loadRegionExpansionState();
+    void saveRegionExpansionState() const;
+    bool isSearchActive() const;
 };
 
 #endif // APICOUNTRYMODEL_H

client/ui/qml/Pages2/PageSettingsApiAvailableCountries.qml

@@ -48,7 +48,7 @@ PageType {
 
         anchors.fill: parent
 
-        model: ApiCountriesRegionModel
+        model: ApiCountryModel.regionRowsModel
 
         currentIndex: 0
 
@@ -152,7 +152,7 @@ PageType {
                             const shouldRestoreFocus = activeFocus
                             const previousCursorPosition = cursorPosition
 
-                            ApiCountriesRegionModel.searchText = text
+                            ApiCountryModel.searchText = text
 
                             if (shouldRestoreFocus) {
                                 Qt.callLater(function() {
@@ -197,7 +197,7 @@ PageType {
 
         footer: Item {
             width: menuContent.width
-            height: ApiCountriesRegionModel.count === 0 ? emptyStateText.implicitHeight + 32 : 0
+            height: ApiCountryModel.hasVisibleRegions ? 0 : emptyStateText.implicitHeight + 32
 
             CaptionTextType {
                 id: emptyStateText
@@ -209,7 +209,7 @@ PageType {
                 anchors.top: parent.top
                 anchors.topMargin: 16
 
-                visible: ApiCountriesRegionModel.count === 0
+                visible: !ApiCountryModel.hasVisibleRegions
                 color: AmneziaStyle.color.mutedGray
 
                 font.pixelSize: 15
@@ -219,39 +219,33 @@ PageType {
             }
         }
 
-        delegate: ColumnLayout {
-            id: regionContent
-
+        delegate: Item {
             width: menuContent.width
-            height: regionContent.implicitHeight
-            spacing: 0
+            implicitHeight: rowType === "region" ? 44 : 88
 
             Item {
-                Layout.fillWidth: true
-                Layout.leftMargin: 16
-                Layout.rightMargin: 16
-                Layout.topMargin: 12
-                Layout.bottomMargin: 8
-
-                implicitHeight: 24
+                anchors.fill: parent
+                visible: rowType === "region"
 
                 RowLayout {
                     anchors.fill: parent
+                    anchors.leftMargin: 16
+                    anchors.rightMargin: 16
+                    anchors.topMargin: 12
+                    anchors.bottomMargin: 8
                     spacing: 8
 
                     CaptionTextType {
                         Layout.fillWidth: true
                         color: AmneziaStyle.color.mutedGray
-
                         text: regionName
                         horizontalAlignment: Text.AlignLeft
                         verticalAlignment: Text.AlignVCenter
                     }
 
                     Image {
-                        source: ApiCountriesRegionModel.isRegionExpanded(regionName)
-                                ? "qrc:/images/controls/chevron-up.svg"
-                                : "qrc:/images/controls/chevron-down.svg"
+                        source: isExpanded ? "qrc:/images/controls/chevron-up.svg"
+                                           : "qrc:/images/controls/chevron-down.svg"
                     }
                 }
 
@@ -259,85 +253,75 @@ PageType {
                     anchors.fill: parent
                     cursorShape: Qt.PointingHandCursor
                     onClicked: {
-                        ApiCountriesRegionModel.toggleRegionExpanded(regionName)
+                        ApiCountryModel.toggleRegionExpanded(regionName)
                     }
                 }
             }
 
-            Repeater {
-                model: ApiCountriesRegionModel.isRegionExpanded(regionName) ? countries : []
+            ColumnLayout {
+                anchors.fill: parent
+                visible: rowType === "country"
+                spacing: 0
 
-                delegate: ColumnLayout {
-                    property var countryData: modelData
+                RowLayout {
+                    Layout.fillWidth: true
 
-                    width: menuContent.width
-                    spacing: 0
-
-                    RowLayout {
-                        VerticalRadioButton {
-                            id: containerRadioButton
-
-                            Layout.fillWidth: true
-                            Layout.leftMargin: 16
-
-                            text: countryData.countryName
-
-                            ButtonGroup.group: containersRadioButtonGroup
-
-                            imageSource: "qrc:/images/controls/download.svg"
-
-                            checked: countryData.sourceIndex >= 0 && countryData.sourceIndex === ApiCountryModel.currentIndex
-                            checkable: countryData.isAvailable && !ConnectionController.isConnected
-
-                            onClicked: {
-                                if (!countryData.isAvailable) {
-                                    return
-                                }
-                                if (ConnectionController.isConnectionInProgress) {
-                                    PageController.showNotificationMessage(qsTr("Unable change server location while trying to make an active connection"))
-                                    return
-                                }
-                                if (ConnectionController.isConnected) {
-                                    PageController.showNotificationMessage(qsTr("Unable change server location while there is an active connection"))
-                                    return
-                                }
-
-                                if (countryData.sourceIndex !== ApiCountryModel.currentIndex) {
-                                    PageController.showBusyIndicator(true)
-                                    var prevIndex = ApiCountryModel.currentIndex
-                                    ApiCountryModel.currentIndex = countryData.sourceIndex
-                                    if (!ApiConfigsController.updateServiceFromGateway(ServersModel.defaultIndex, countryData.countryCode, countryData.sourceCountryName)) {
-                                        ApiCountryModel.currentIndex = prevIndex
-                                    }
-                                    PageController.showBusyIndicator(false)
-                                }
-                            }
-
-                            Keys.onEnterPressed: {
-                                if (checkable) {
-                                    checked = true
-                                }
-                                containerRadioButton.clicked()
-                            }
-                            Keys.onReturnPressed: {
-                                if (checkable) {
-                                    checked = true
-                                }
-                                containerRadioButton.clicked()
-                            }
-                        }
-
-                        Image {
-                            Layout.rightMargin: 32
-                            Layout.alignment: Qt.AlignRight
-
-                            source: "qrc:/countriesFlags/images/flagKit/" + countryData.countryImageCode + ".svg"
-                        }
-                    }
-
-                    DividerType {
+                    VerticalRadioButton {
+                        id: containerRadioButton
                         Layout.fillWidth: true
+                        Layout.leftMargin: 16
+
+                        text: countryName
+                        ButtonGroup.group: containersRadioButtonGroup
+                        imageSource: "qrc:/images/controls/download.svg"
+
+                        checked: sourceIndex >= 0 && sourceIndex === ApiCountryModel.currentIndex
+                        checkable: !ConnectionController.isConnected
+
+                        onClicked: {
+                            if (ConnectionController.isConnectionInProgress) {
+                                PageController.showNotificationMessage(qsTr("Unable change server location while trying to make an active connection"))
+                                return
+                            }
+                            if (ConnectionController.isConnected) {
+                                PageController.showNotificationMessage(qsTr("Unable change server location while there is an active connection"))
+                                return
+                            }
+
+                            if (sourceIndex !== ApiCountryModel.currentIndex) {
+                                PageController.showBusyIndicator(true)
+                                var prevIndex = ApiCountryModel.currentIndex
+                                ApiCountryModel.currentIndex = sourceIndex
+                                if (!ApiConfigsController.updateServiceFromGateway(ServersModel.defaultIndex, countryCode, sourceCountryName)) {
+                                    ApiCountryModel.currentIndex = prevIndex
+                                }
+                                PageController.showBusyIndicator(false)
+                            }
+                        }
+
+                        Keys.onEnterPressed: {
+                            if (checkable) {
+                                checked = true
+                            }
+                            containerRadioButton.clicked()
+                        }
+                        Keys.onReturnPressed: {
+                            if (checkable) {
+                                checked = true
+                            }
+                            containerRadioButton.clicked()
+                        }
                     }
+
+                    Image {
+                        Layout.rightMargin: 32
+                        Layout.alignment: Qt.AlignRight
+                        source: "qrc:/countriesFlags/images/flagKit/" + countryImageCode + ".svg"
+                    }
+                }
+
+                DividerType {
+                    Layout.fillWidth: true
                 }
             }
         }