interfaces: Add getWalletDir and listWalletDir to Node

src/dummywallet.cpp

@@ -34,6 +34,16 @@ void DummyWalletInit::AddWalletOptions() const
 
 const WalletInitInterface& g_wallet_init_interface = DummyWalletInit();
 
+fs::path GetWalletDir()
+{
+    throw std::logic_error("Wallet function called in non-wallet build.");
+}
+
+std::vector<fs::path> ListWalletDir()
+{
+    throw std::logic_error("Wallet function called in non-wallet build.");
+}
+
 std::vector<std::shared_ptr<CWallet>> GetWallets()
 {
     throw std::logic_error("Wallet function called in non-wallet build.");

src/interfaces/node.cpp

@@ -38,6 +38,8 @@
 #include <univalue.h>
 
 class CWallet;
+fs::path GetWalletDir();
+std::vector<fs::path> ListWalletDir();
 std::vector<std::shared_ptr<CWallet>> GetWallets();
 
 namespace interfaces {
@@ -218,6 +220,18 @@ class NodeImpl : public Node
         LOCK(::cs_main);
         return ::pcoinsTip->GetCoin(output, coin);
     }
+    std::string getWalletDir() override
+    {
+        return GetWalletDir().string();
+    }
+    std::vector<std::string> listWalletDir() override
+    {
+        std::vector<std::string> paths;
+        for (auto& path : ListWalletDir()) {
+            paths.push_back(path.string());
+        }
+        return paths;
+    }
     std::vector<std::unique_ptr<Wallet>> getWallets() override
     {
         std::vector<std::unique_ptr<Wallet>> wallets;

src/interfaces/node.h

@@ -173,6 +173,12 @@ public:
     //! Get unspent outputs associated with a transaction.
     virtual bool getUnspentOutput(const COutPoint& output, Coin& coin) = 0;
 
+    //! Return default wallet directory.
+    virtual std::string getWalletDir() = 0;
+
+    //! Return available wallets in wallet directory.
+    virtual std::vector<std::string> listWalletDir() = 0;
+
     //! Return interfaces for accessing wallets (if any).
     virtual std::vector<std::unique_ptr<Wallet>> getWallets() = 0;