refactor: Implement restorewallet() logic in the wallet section

Currently restorewallet() logic is written in the RPC layer
and it can´t be reused by GUI. So it reimplements this in the
wallet and interface sections and then, GUI can access it.

1 files changed, 25 insertions, 0 deletions

diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index cfe550cb3f..59ed8c2571 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -357,6 +357,31 @@ std::shared_ptr<CWallet> CreateWallet(WalletContext& context, const std::string&
     return wallet;
 }
 
+std::shared_ptr<CWallet> RestoreWallet(WalletContext& context, const std::string& backup_file, const std::string& wallet_name, std::optional<bool> load_on_start, DatabaseStatus& status, bilingual_str& error, std::vector<bilingual_str>& warnings)
+{
+    DatabaseOptions options;
+    options.require_existing = true;
+
+    if (!fs::exists(fs::u8path(backup_file))) {
+        error = Untranslated("Backup file does not exist");
+        status = DatabaseStatus::FAILED_BAD_PATH;
+        return nullptr;
+    }
+
+    const fs::path wallet_path = fsbridge::AbsPathJoin(GetWalletDir(), fs::u8path(wallet_name));
+
+    if (fs::exists(wallet_path) || !TryCreateDirectories(wallet_path)) {
+        error = Untranslated(strprintf("Failed to create database path '%s'. Database already exists.", fs::PathToString(wallet_path)));
+        status = DatabaseStatus::FAILED_ALREADY_EXISTS;
+        return nullptr;
+    }
+
+    auto wallet_file = wallet_path / "wallet.dat";
+    fs::copy_file(backup_file, wallet_file, fs::copy_option::fail_if_exists);
+
+    return LoadWallet(context, wallet_name, load_on_start, options, status, error, warnings);
+}
+
 /** @defgroup mapWallet
  *
  * @{