blance and inventory stubs

interface/src/commerce/Ledger.cpp

@@ -33,6 +33,11 @@ bool Ledger::buy(const QString& hfc_key, int cost, const QString& asset_id, cons
     request["signature"] = signature;
 
     qCInfo(commerce) << "Transaction:" << QJsonDocument(request).toJson(QJsonDocument::Compact);
+    // FIXME: talk to server instead
+    QStringList keySet{ hfc_key };
+    if (initializedBalance() < cost) return false;
+    _balance -= cost;
+    _inventory.push_back(asset_id);
     return true; // FIXME send to server.
 }
 
@@ -46,3 +51,15 @@ bool Ledger::receiveAt(const QString& hfc_key) {
     qCInfo(commerce) << "Setting default receiving key for" << username;
     return true; // FIXME send to server.
 }
+
+int Ledger::balance(const QStringList& keys) {
+    // FIXME: talk to server instead
+    qCInfo(commerce) << "Balance:" << initializedBalance();
+    return _balance;
+}
+
+QStringList Ledger::inventory(const QStringList& keys) {
+    // FIXME: talk to server instead
+    qCInfo(commerce) << "Inventory:" << _inventory;
+    return _inventory;
+}

interface/src/commerce/Ledger.h

@@ -23,6 +23,14 @@ class Ledger : public QObject, public Dependency {
 public:
     bool buy(const QString& hfc_key, int cost, const QString& asset_id, const QString& inventory_key, const QString& buyerUsername = "");
     bool receiveAt(const QString& hfc_key);
+    int balance(const QStringList& keys);
+    QStringList inventory(const QStringList& keys);
+
+private:
+    // These in-memory caches is temporary, until we start sending things to the server.
+    int _balance{ -1 };
+    QStringList _inventory{};
+    int initializedBalance() { if (_balance < 0) _balance = 100; return _balance; }
 };
 
 #endif // hifi_Ledger_h

interface/src/commerce/QmlCommerce.cpp

@@ -17,7 +17,7 @@
 
 HIFI_QML_DEF(QmlCommerce)
 
-bool QmlCommerce::buy(const QString& assetId, int cost, const QString& buyerUsername) {
+void QmlCommerce::buy(const QString& assetId, int cost, const QString& buyerUsername) {
     auto ledger = DependencyManager::get<Ledger>();
     auto wallet = DependencyManager::get<Wallet>();
     QStringList keys = wallet->listPublicKeys();
@@ -26,5 +26,20 @@ bool QmlCommerce::buy(const QString& assetId, int cost, const QString& buyerUser
     }
     QString key = keys[0];
     // For now, we receive at the same key that pays for it.
-    return ledger->buy(key, cost, assetId, key, buyerUsername);
+    bool success = ledger->buy(key, cost, assetId, key, buyerUsername);
+    // FIXME: until we start talking to server, report post-transaction balance and inventory so we can see log for testing.
+    balance();
+    inventory();
+    return success;
+}
+
+int QmlCommerce::balance() {
+    auto ledger = DependencyManager::get<Ledger>();
+    auto wallet = DependencyManager::get<Wallet>();
+    return ledger->balance(wallet->listPublicKeys());
+}
+QStringList QmlCommerce::inventory() {
+    auto ledger = DependencyManager::get<Ledger>();
+    auto wallet = DependencyManager::get<Wallet>();
+    return ledger->inventory(wallet->listPublicKeys());
  }

interface/src/commerce/QmlCommerce.h

@@ -21,8 +21,13 @@ class QmlCommerce : public OffscreenQmlDialog {
     Q_OBJECT
     HIFI_QML_DECL
 
+signals:
+    void buyResult(const QString& failureMessage);
+
 protected:
     Q_INVOKABLE bool buy(const QString& assetId, int cost, const QString& buyerUsername = "");
+    Q_INVOKABLE int balance();
+    Q_INVOKABLE QStringList inventory();
 };
 
 #endif // hifi_QmlCommerce_h

scripts/system/marketplaces/marketplaces.js

@@ -131,8 +131,8 @@
         } else {
             var parsedJsonMessage = JSON.parse(message);
             if (parsedJsonMessage.type === "CHECKOUT") {
-                tablet.sendToQml({ method: 'updateCheckoutQML', params: parsedJsonMessage });
                 tablet.pushOntoStack(MARKETPLACE_CHECKOUT_QML_PATH);
+                tablet.sendToQml({ method: 'updateCheckoutQML', params: parsedJsonMessage });
             } else if (parsedJsonMessage.type === "REQUEST_SETTING") {
                 tablet.emitScriptEvent(JSON.stringify({
                     type: "marketplaces",