wowlet: WOW/USD price feed from neroswap (HTTP poll); fix fiat conversion to use WOW not XMR

src/utils/AppData.cpp

@@ -4,9 +4,14 @@
 #include "AppData.h"
 
 #include <QCoreApplication>
+#include <QTimer>
+#include <QJsonDocument>
+#include <QJsonObject>
+#include <QNetworkReply>
 
 #include "config.h"
 #include "WebsocketNotifier.h"
+#include "Networking.h"
 
 AppData::AppData(QObject *parent)
     : QObject(parent)
@@ -22,10 +27,28 @@ AppData::AppData(QObject *parent)
         websocketNotifier()->websocketClient->sendMsg(data);
     });
 
-    connect(websocketNotifier(), &WebsocketNotifier::CryptoRatesReceived, &this->prices, &Prices::cryptoPricesReceived);
+    // wownero: crypto prices come from neroswap (HTTP poll below), not feather's websocket (no WOW).
+    // connect(websocketNotifier(), &WebsocketNotifier::CryptoRatesReceived, &this->prices, &Prices::cryptoPricesReceived);
     connect(websocketNotifier(), &WebsocketNotifier::FiatRatesReceived, &this->prices, &Prices::fiatPricesReceived);
     connect(websocketNotifier(), &WebsocketNotifier::TxFiatHistoryReceived, this->txFiatHistory, &TxFiatHistory::onWSData);
     connect(websocketNotifier(), &WebsocketNotifier::BlockHeightsReceived, this, &AppData::onBlockHeightsReceived);
+
+    // wownero: poll WOW (+ BTC/XMR/etc.) USD prices from neroswap every 2 minutes.
+    m_network = new Networking(this);
+    auto fetchNeroswapPrices = [this] {
+        QNetworkReply *reply = m_network->getJson(this, "https://prices.neroswap.com/v1/prices");
+        connect(reply, &QNetworkReply::finished, this, [this, reply] {
+            reply->deleteLater();
+            if (reply->error() != QNetworkReply::NoError)
+                return;
+            QJsonObject obj = QJsonDocument::fromJson(reply->readAll()).object();
+            this->prices.neroswapPricesReceived(obj);
+        });
+    };
+    fetchNeroswapPrices();
+    auto *priceTimer = new QTimer(this);
+    connect(priceTimer, &QTimer::timeout, this, fetchNeroswapPrices);
+    priceTimer->start(120 * 1000);
 }
 
 QPointer<AppData> AppData::m_instance(nullptr);

src/utils/AppData.h

@@ -11,6 +11,8 @@
 #include "TxFiatHistory.h"
 #include "RestoreHeightLookup.h"
 
+class Networking;
+
 class AppData : public QObject {
 Q_OBJECT
 
@@ -29,6 +31,7 @@ private slots:
 private:
     void initRestoreHeights();
 
+    Networking *m_network = nullptr;
     static QPointer<AppData> m_instance;
 };
 

src/utils/prices.cpp

@@ -34,6 +34,29 @@ void Prices::cryptoPricesReceived(const QJsonArray &data) {
     emit cryptoPricesUpdated();
 }
 
+void Prices::neroswapPricesReceived(const QJsonObject &data) {
+    // neroswap returns {"rates": {"WOW": usd, "XMR": usd, ...}}. It is wowlet's sole crypto-price
+    // source (feather's websocket server does not carry WOW), so repopulate markets from it.
+    QJsonObject ratesData = data.value("rates").toObject();
+    if (ratesData.isEmpty())
+        return;
+
+    this->markets.clear();
+    for (const QString &sym : ratesData.keys()) {
+        double usd = ratesData.value(sym).toDouble();
+        if (usd <= 0)
+            continue;
+        marketStruct ms;
+        ms.symbol = sym.toUpper();
+        ms.name = sym;
+        ms.price_usd = usd;
+        ms.price_usd_change_pct_24h = 0.0;  // neroswap does not provide 24h change
+        this->markets.insert(sym.toUpper(), ms);
+    }
+
+    emit cryptoPricesUpdated();
+}
+
 void Prices::fiatPricesReceived(const QJsonObject &data) {
     QJsonObject ratesData = data.value("rates").toObject();
     for (const auto &currency : ratesData.keys()) {
@@ -79,7 +102,7 @@ double Prices::convert(QString symbolFrom, QString symbolTo, double amount) {
 
 QString Prices::atomicUnitsToPreferredFiatString(quint64 amount, bool wrapInParens) {
     QString fiatCurrency = conf()->get(Config::preferredFiatCurrency).toString();
-    double fiatAmount = convert("XMR", fiatCurrency, amount / constants::cdiv);
+    double fiatAmount = convert("WOW", fiatCurrency, amount / constants::cdiv);
     QString currencyString = Utils::amountToCurrencyString(fiatAmount, fiatCurrency);
 
     if (wrapInParens) {

src/utils/prices.h

@@ -27,6 +27,7 @@ public:
 
 public slots:
     void cryptoPricesReceived(const QJsonArray &data);
+    void neroswapPricesReceived(const QJsonObject &data);   // wownero: WOW (+ others) USD prices from neroswap
     void fiatPricesReceived(const QJsonObject &data);
 
     double convert(QString symbolFrom, QString symbolTo, double amount);