wallet2_api.h

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// Copyright (c) 2014-2019, The Monero Project
// 
// All rights reserved.
// 
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
// 
// 1. Redistributions of source code must retain the above copyright notice, this list of
//    conditions and the following disclaimer.
// 
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
//    materials provided with the distribution.
// 
// 3. Neither the name of the copyright holder nor the names of its contributors may be
//    used to endorse or promote products derived from this software without specific
//    prior written permission.
// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
 
#pragma once
 
 
#include <string>
#include <vector>
#include <list>
#include <set>
#include <ctime>
#include <iostream>
#include <stdexcept>
 
//  Public interface for libwallet library
namespace Electroneum {
 
enum NetworkType : uint8_t {
    MAINNET = 0,
    TESTNET,
    STAGENET
};
 
    namespace Utils {
        bool isAddressLocal(const std::string &hostaddr);
        void onStartup();
    }
 
    template<typename T>
    class optional {
      public:
        optional(): set(false) {}
        optional(const T &t): t(t), set(true) {}
        const T &operator*() const { return t; }
        T &operator*() { return t; }
        operator bool() const { return set; }
      private:
        T t;
        bool set;
    };
 
struct PendingTransaction
{
    enum Status {
        Status_Ok,
        Status_Error,
        Status_Critical
    };
 
    enum Priority {
        Priority_Default = 0,
        Priority_Low = 1,
        Priority_Medium = 2,
        Priority_High = 3,
        Priority_Last
    };
 
    virtual ~PendingTransaction() = 0;
    virtual int status() const = 0;
    virtual std::string errorString() const = 0;
    // commit transaction or save to file if filename is provided.
    virtual bool commit(const std::string &filename = "", bool overwrite = false) = 0;
    virtual uint64_t amount() const = 0;
    virtual uint64_t dust() const = 0;
    virtual uint64_t fee() const = 0;
    virtual std::vector<std::string> txid() const = 0;
    virtual uint64_t txCount() const = 0;
    virtual std::vector<uint32_t> subaddrAccount() const = 0;
    virtual std::vector<std::set<uint32_t>> subaddrIndices() const = 0;
 
    virtual std::string multisigSignData() = 0;
    virtual void signMultisigTx() = 0;
    virtual std::vector<std::string> signersKeys() const = 0;
};
 
struct UnsignedTransaction
{
    enum Status {
        Status_Ok,
        Status_Error,
        Status_Critical
    };
 
    virtual ~UnsignedTransaction() = 0;
    virtual int status() const = 0;
    virtual std::string errorString() const = 0;
    virtual std::vector<uint64_t> amount() const = 0;
    virtual std::vector<uint64_t>  fee() const = 0;
    virtual std::vector<uint64_t> mixin() const = 0;
    // returns a string with information about all transactions.
    virtual std::string confirmationMessage() const = 0;
    virtual std::vector<std::string> paymentId() const = 0;
    virtual std::vector<std::string> recipientAddress() const = 0;
    virtual uint64_t minMixinCount() const = 0;
    virtual uint64_t txCount() const = 0;
    virtual bool sign(const std::string &signedFileName) = 0;
};
 
struct TransactionInfo
{
    enum Direction {
        Direction_In,
        Direction_Out
    };
 
    struct Transfer {
        Transfer(uint64_t _amount, const std::string &address);
        const uint64_t amount;
        const std::string address;
    };
 
    virtual ~TransactionInfo() = 0;
    virtual int  direction() const = 0;
    virtual bool isPending() const = 0;
    virtual bool isFailed() const = 0;
    virtual uint64_t amount() const = 0;
    virtual uint64_t fee() const = 0;
    virtual uint64_t blockHeight() const = 0;
    virtual std::set<uint32_t> subaddrIndex() const = 0;
    virtual uint32_t subaddrAccount() const = 0;
    virtual std::string label() const = 0;
    virtual uint64_t confirmations() const = 0;
    virtual uint64_t unlockTime() const = 0;
    virtual std::string hash() const = 0;
    virtual std::time_t timestamp() const = 0;
    virtual std::string paymentId() const = 0;
    virtual const std::vector<Transfer> & transfers() const = 0;
};
struct TransactionHistory
{
    virtual ~TransactionHistory() = 0;
    virtual int count() const = 0;
    virtual TransactionInfo * transaction(int index)  const = 0;
    virtual TransactionInfo * transaction(const std::string &id) const = 0;
    virtual std::vector<TransactionInfo*> getAll() const = 0;
    virtual void refresh() = 0;
};
 
struct AddressBookRow {
public:
    AddressBookRow(std::size_t _rowId, const std::string &_address, const std::string &_paymentId, const std::string &_description):
        m_rowId(_rowId),
        m_address(_address),
        m_paymentId(_paymentId), 
        m_description(_description) {}
 
private:
    std::size_t m_rowId;
    std::string m_address;
    std::string m_paymentId;
    std::string m_description;
public:
    std::string extra;
    std::string getAddress() const {return m_address;} 
    std::string getDescription() const {return m_description;} 
    std::string getPaymentId() const {return m_paymentId;} 
    std::size_t getRowId() const {return m_rowId;}
};
 
struct AddressBook
{
    enum ErrorCode {
        Status_Ok,
        General_Error,
        Invalid_Address,
        Invalid_Payment_Id
    };
    virtual ~AddressBook() = 0;
    virtual std::vector<AddressBookRow*> getAll() const = 0;
    virtual bool addRow(const std::string &dst_addr , const std::string &payment_id, const std::string &description) = 0;  
    virtual bool deleteRow(std::size_t rowId) = 0;
    virtual void refresh() = 0;  
    virtual std::string errorString() const = 0;
    virtual int errorCode() const = 0;
    virtual int lookupPaymentID(const std::string &payment_id) const = 0;
};
 
struct SubaddressRow {
public:
    SubaddressRow(std::size_t _rowId, const std::string &_address, const std::string &_label):
        m_rowId(_rowId),
        m_address(_address),
        m_label(_label) {}
 
private:
    std::size_t m_rowId;
    std::string m_address;
    std::string m_label;
public:
    std::string extra;
    std::string getAddress() const {return m_address;}
    std::string getLabel() const {return m_label;}
    std::size_t getRowId() const {return m_rowId;}
};
 
struct Subaddress
{
    virtual ~Subaddress() = 0;
    virtual std::vector<SubaddressRow*> getAll() const = 0;
    virtual void addRow(uint32_t accountIndex, const std::string &label) = 0;
    virtual void setLabel(uint32_t accountIndex, uint32_t addressIndex, const std::string &label) = 0;
    virtual void refresh(uint32_t accountIndex) = 0;
};
 
struct SubaddressAccountRow {
public:
    SubaddressAccountRow(std::size_t _rowId, const std::string &_address, const std::string &_label, const std::string &_balance, const std::string &_unlockedBalance):
        m_rowId(_rowId),
        m_address(_address),
        m_label(_label),
        m_balance(_balance),
        m_unlockedBalance(_unlockedBalance) {}
 
private:
    std::size_t m_rowId;
    std::string m_address;
    std::string m_label;
    std::string m_balance;
    std::string m_unlockedBalance;
public:
    std::string extra;
    std::string getAddress() const {return m_address;}
    std::string getLabel() const {return m_label;}
    std::string getBalance() const {return m_balance;}
    std::string getUnlockedBalance() const {return m_unlockedBalance;}
    std::size_t getRowId() const {return m_rowId;}
};
 
struct SubaddressAccount
{
    virtual ~SubaddressAccount() = 0;
    virtual std::vector<SubaddressAccountRow*> getAll() const = 0;
    virtual void addRow(const std::string &label) = 0;
    virtual void setLabel(uint32_t accountIndex, const std::string &label) = 0;
    virtual void refresh() = 0;
};
 
struct MultisigState {
    MultisigState() : isMultisig(false), isReady(false), threshold(0), total(0) {}
 
    bool isMultisig;
    bool isReady;
    uint32_t threshold;
    uint32_t total;
};
 
 
struct DeviceProgress {
    DeviceProgress(): m_progress(0), m_indeterminate(false) {}
    DeviceProgress(double progress, bool indeterminate=false): m_progress(progress), m_indeterminate(indeterminate) {}
 
    virtual double progress() const { return m_progress; }
    virtual bool indeterminate() const { return m_indeterminate; }
 
protected:
    double m_progress;
    bool m_indeterminate;
};
 
struct Wallet;
struct WalletListener
{
    virtual ~WalletListener() = 0;
    virtual void moneySpent(const std::string &txId, uint64_t amount) = 0;
 
    virtual void moneyReceived(const std::string &txId, uint64_t amount) = 0;
    
    virtual void unconfirmedMoneyReceived(const std::string &txId, uint64_t amount) = 0;
 
    virtual void newBlock(uint64_t height) = 0;
 
    virtual void updated() = 0;
 
 
    virtual void refreshed() = 0;
 
    virtual void onDeviceButtonRequest(uint64_t code) { (void)code; }
 
    virtual void onDeviceButtonPressed() { }
 
    virtual optional<std::string> onDevicePinRequest() {
        throw std::runtime_error("Not supported");
    }
 
    virtual optional<std::string> onDevicePassphraseRequest(bool on_device) {
        if (!on_device) throw std::runtime_error("Not supported");
        return optional<std::string>();
    }
 
    virtual void onDeviceProgress(const DeviceProgress & event) { (void)event; };
 
    virtual void onSetWallet(Wallet * wallet) { (void)wallet; };
};
 
 
struct Wallet
{
    enum Device {
        Device_Software = 0,
        Device_Ledger = 1,
        Device_Trezor = 2
    };
 
    enum Status {
        Status_Ok,
        Status_Error,
        Status_Critical
    };
 
    enum ConnectionStatus {
        ConnectionStatus_Disconnected,
        ConnectionStatus_Connected,
        ConnectionStatus_WrongVersion
    };
 
    virtual ~Wallet() = 0;
    virtual std::string seed() const = 0;
    virtual std::string getSeedLanguage() const = 0;
    virtual void setSeedLanguage(const std::string &arg) = 0;
    virtual int status() const = 0; //deprecated: use safe alternative statusWithErrorString
    virtual std::string errorString() const = 0; //deprecated: use safe alternative statusWithErrorString
    virtual void statusWithErrorString(int& status, std::string& errorString) const = 0;
    virtual bool setPassword(const std::string &password) = 0;
    virtual bool setDevicePin(const std::string &pin) { (void)pin; return false; };
    virtual bool setDevicePassphrase(const std::string &passphrase) { (void)passphrase; return false; };
    virtual std::string address(uint32_t accountIndex = 0, uint32_t addressIndex = 0) const = 0;
    std::string mainAddress() const { return address(0, 0); }
    virtual std::string path() const = 0;
    virtual NetworkType nettype() const = 0;
    bool mainnet() const { return nettype() == MAINNET; }
    bool testnet() const { return nettype() == TESTNET; }
    bool stagenet() const { return nettype() == STAGENET; }
    virtual void hardForkInfo(uint8_t &version, uint64_t &earliest_height) const = 0;
    virtual bool useForkRules(uint8_t version, int64_t early_blocks) const = 0;  
    virtual std::string integratedAddress(const std::string &payment_id) const = 0;
    
    virtual std::string secretViewKey() const = 0;
 
    virtual std::string publicViewKey() const = 0;
 
    virtual std::string secretSpendKey() const = 0;
 
    virtual std::string publicSpendKey() const = 0;
 
    virtual std::string publicMultisigSignerKey() const = 0;
 
    virtual bool store(const std::string &path) = 0;
    virtual std::string filename() const = 0;
    virtual std::string keysFilename() const = 0;
    virtual bool init(const std::string &daemon_address, uint64_t upper_transaction_size_limit = 0, const std::string &daemon_username = "", const std::string &daemon_password = "", bool use_ssl = false, bool lightWallet = false) = 0;
 
    virtual bool createWatchOnly(const std::string &path, const std::string &password, const std::string &language) const = 0;
 
    virtual void setRefreshFromBlockHeight(uint64_t refresh_from_block_height) = 0;
 
    virtual uint64_t getRefreshFromBlockHeight() const = 0;
 
    virtual void setRecoveringFromSeed(bool recoveringFromSeed) = 0;
 
    virtual void setRecoveringFromDevice(bool recoveringFromDevice) = 0;
 
    virtual void setSubaddressLookahead(uint32_t major, uint32_t minor) = 0;
 
    virtual bool connectToDaemon() = 0;
 
    virtual ConnectionStatus connected() const = 0;
    virtual void setTrustedDaemon(bool arg) = 0;
    virtual bool trustedDaemon() const = 0;
    virtual uint64_t balance(uint32_t accountIndex = 0) const = 0;
    uint64_t balanceAll() const {
        uint64_t result = 0;
        for (uint32_t i = 0; i < numSubaddressAccounts(); ++i)
            result += balance(i);
        return result;
    }
    virtual uint64_t unlockedBalance(uint32_t accountIndex = 0) const = 0;
    uint64_t unlockedBalanceAll() const {
        uint64_t result = 0;
        for (uint32_t i = 0; i < numSubaddressAccounts(); ++i)
            result += unlockedBalance(i);
        return result;
    }
 
    virtual bool watchOnly() const = 0;
 
    virtual uint64_t blockChainHeight() const = 0;
 
    virtual uint64_t approximateBlockChainHeight() const = 0;
 
    virtual uint64_t estimateBlockChainHeight() const = 0;
    virtual uint64_t daemonBlockChainHeight() const = 0;
 
    virtual uint64_t daemonBlockChainTargetHeight() const = 0;
 
    virtual bool synchronized() const = 0;
 
    static std::string displayAmount(uint64_t amount);
    static uint64_t amountFromString(const std::string &amount);
    static uint64_t amountFromDouble(double amount);
    static std::string genPaymentId();
    static bool paymentIdValid(const std::string &paiment_id);
    static bool addressValid(const std::string &str, NetworkType nettype);
    static bool addressValid(const std::string &str, bool testnet)          // deprecated
    {
        return addressValid(str, testnet ? TESTNET : MAINNET);
    }
    static bool keyValid(const std::string &secret_key_string, const std::string &address_string, bool isViewKey, NetworkType nettype, std::string &error);
    static bool keyValid(const std::string &secret_key_string, const std::string &address_string, bool isViewKey, bool testnet, std::string &error)     // deprecated
    {
        return keyValid(secret_key_string, address_string, isViewKey, testnet ? TESTNET : MAINNET, error);
    }
    static std::string paymentIdFromAddress(const std::string &str, NetworkType nettype);
    static std::string paymentIdFromAddress(const std::string &str, bool testnet)       // deprecated
    {
        return paymentIdFromAddress(str, testnet ? TESTNET : MAINNET);
    }
    static uint64_t maximumAllowedAmount();
    // Easylogger wrapper
    static void init(const char *argv0, const char *default_log_base_name) { init(argv0, default_log_base_name, "", true); }
    static void init(const char *argv0, const char *default_log_base_name, const std::string &log_path, bool console);
    static void debug(const std::string &category, const std::string &str);
    static void info(const std::string &category, const std::string &str);
    static void warning(const std::string &category, const std::string &str);
    static void error(const std::string &category, const std::string &str);
 
    virtual void startRefresh() = 0;
    virtual void pauseRefresh() = 0;
 
    virtual bool refresh() = 0;
 
    virtual void refreshAsync() = 0;
 
    virtual bool rescanBlockchain() = 0;
 
    virtual void rescanBlockchainAsync() = 0;
 
    virtual void setAutoRefreshInterval(int millis) = 0;
 
    virtual int autoRefreshInterval() const = 0;
 
    virtual void addSubaddressAccount(const std::string& label) = 0;
    virtual size_t numSubaddressAccounts() const = 0;
    virtual size_t numSubaddresses(uint32_t accountIndex) const = 0;
    virtual void addSubaddress(uint32_t accountIndex, const std::string& label) = 0;
    virtual std::string getSubaddressLabel(uint32_t accountIndex, uint32_t addressIndex) const = 0;
    virtual void setSubaddressLabel(uint32_t accountIndex, uint32_t addressIndex, const std::string &label) = 0;
 
    virtual MultisigState multisig() const = 0;
    virtual std::string getMultisigInfo() const = 0;
    virtual std::string makeMultisig(const std::vector<std::string>& info, uint32_t threshold) = 0;
    virtual std::string exchangeMultisigKeys(const std::vector<std::string> &info) = 0;
    virtual bool finalizeMultisig(const std::vector<std::string>& extraMultisigInfo) = 0;
    virtual bool exportMultisigImages(std::string& images) = 0;
    virtual size_t importMultisigImages(const std::vector<std::string>& images) = 0;
    virtual bool hasMultisigPartialKeyImages() const = 0;
 
    virtual PendingTransaction*  restoreMultisigTransaction(const std::string& signData) = 0;
    virtual PendingTransaction * createTransaction(const std::string &dst_addr, const std::string &payment_id,
                                                   optional<uint64_t> amount, uint32_t mixin_count,
                                                   PendingTransaction::Priority = PendingTransaction::Priority_Low,
                                                   uint32_t subaddr_account = 0,
                                                   std::set<uint32_t> subaddr_indices = {}) = 0;
 
    virtual PendingTransaction * createSweepUnmixableTransaction() = 0;
    
    virtual UnsignedTransaction * loadUnsignedTx(const std::string &unsigned_filename) = 0;
    
    virtual bool submitTransaction(const std::string &fileName) = 0;
    
 
    virtual void disposeTransaction(PendingTransaction * t) = 0;
 
    virtual bool exportKeyImages(const std::string &filename) = 0;
   
    virtual bool importKeyImages(const std::string &filename) = 0;
 
 
    virtual TransactionHistory * history() = 0;
    virtual AddressBook * addressBook() = 0;
    virtual Subaddress * subaddress() = 0;
    virtual SubaddressAccount * subaddressAccount() = 0;
    virtual void setListener(WalletListener *) = 0;
    virtual uint32_t defaultMixin() const = 0;
    virtual void setDefaultMixin(uint32_t arg) = 0;
 
    virtual bool setUserNote(const std::string &txid, const std::string &note) = 0;
    virtual std::string getUserNote(const std::string &txid) const = 0;
    virtual std::string getTxKey(const std::string &txid) const = 0;
    virtual bool checkTxKey(const std::string &txid, std::string tx_key, const std::string &address, uint64_t &received, bool &in_pool, uint64_t &confirmations) = 0;
    virtual std::string getTxProof(const std::string &txid, const std::string &address, const std::string &message) const = 0;
    virtual bool checkTxProof(const std::string &txid, const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &received, bool &in_pool, uint64_t &confirmations) = 0;
    virtual std::string getSpendProof(const std::string &txid, const std::string &message) const = 0;
    virtual bool checkSpendProof(const std::string &txid, const std::string &message, const std::string &signature, bool &good) const = 0;
    virtual std::string getReserveProof(bool all, uint32_t account_index, uint64_t amount, const std::string &message) const = 0;
    virtual bool checkReserveProof(const std::string &address, const std::string &message, const std::string &signature, bool &good, uint64_t &total, uint64_t &spent) const = 0;
 
    /*
     * \brief signMessage - sign a message with the spend private key
     * \param message - the message to sign (arbitrary byte data)
     * \return the signature
     */
    virtual std::string signMessage(const std::string &message) = 0;
    virtual bool verifySignedMessage(const std::string &message, const std::string &addres, const std::string &signature) const = 0;
 
    virtual std::string signMultisigParticipant(const std::string &message) const = 0;
    virtual bool verifyMessageWithPublicKey(const std::string &message, const std::string &publicKey, const std::string &signature) const = 0;
 
    virtual bool parse_uri(const std::string &uri, std::string &address, std::string &payment_id, uint64_t &amount, std::string &tx_description, std::string &recipient_name, std::vector<std::string> &unknown_parameters, std::string &error) = 0;
 
    virtual std::string getDefaultDataDir() const = 0;
   
   /*
    * \brief rescanSpent - Rescan spent outputs - Can only be used with trusted daemon
    * \return true on success
    */
    virtual bool rescanSpent() = 0;
    
    virtual bool blackballOutputs(const std::vector<std::string> &outputs, bool add) = 0;
 
    virtual bool blackballOutput(const std::string &amount, const std::string &offset) = 0;
 
    virtual bool unblackballOutput(const std::string &amount, const std::string &offset) = 0;
 
    virtual bool getRing(const std::string &key_image, std::vector<uint64_t> &ring) const = 0;
 
    virtual bool getRings(const std::string &txid, std::vector<std::pair<std::string, std::vector<uint64_t>>> &rings) const = 0;
 
    virtual bool setRing(const std::string &key_image, const std::vector<uint64_t> &ring, bool relative) = 0;
 
    virtual void segregatePreForkOutputs(bool segregate) = 0;
 
    virtual void segregationHeight(uint64_t height) = 0;
 
    virtual void keyReuseMitigation2(bool mitigation) = 0;
 
    virtual bool lightWalletLogin(bool &isNewWallet) const = 0;
    
    virtual bool lightWalletImportWalletRequest(std::string &payment_id, uint64_t &fee, bool &new_request, bool &request_fulfilled, std::string &payment_address, std::string &status) = 0;
 
    virtual bool lockKeysFile() = 0;
    virtual bool unlockKeysFile() = 0;
    virtual bool isKeysFileLocked() = 0;
 
    virtual Device getDeviceType() const = 0;
 
    virtual uint64_t coldKeyImageSync(uint64_t &spent, uint64_t &unspent) = 0;
};
 
struct WalletManager
{
 
    virtual Wallet * createWallet(const std::string &path, const std::string &password, const std::string &language, NetworkType nettype, uint64_t kdf_rounds = 1) = 0;
    Wallet * createWallet(const std::string &path, const std::string &password, const std::string &language, bool testnet = false)      // deprecated
    {
        return createWallet(path, password, language, testnet ? TESTNET : MAINNET);
    }
 
    virtual Wallet * openWallet(const std::string &path, const std::string &password, NetworkType nettype, uint64_t kdf_rounds = 1, WalletListener * listener = nullptr) = 0;
    Wallet * openWallet(const std::string &path, const std::string &password, bool testnet = false)     // deprecated
    {
        return openWallet(path, password, testnet ? TESTNET : MAINNET);
    }
 
    virtual Wallet * recoveryWallet(const std::string &path, const std::string &password, const std::string &mnemonic,
                                    NetworkType nettype = MAINNET, uint64_t restoreHeight = 0, uint64_t kdf_rounds = 1) = 0;
    Wallet * recoveryWallet(const std::string &path, const std::string &password, const std::string &mnemonic,
                                    bool testnet = false, uint64_t restoreHeight = 0)           // deprecated
    {
        return recoveryWallet(path, password, mnemonic, testnet ? TESTNET : MAINNET, restoreHeight);
    }
 
    virtual Wallet * recoveryWallet(const std::string &path, const std::string &mnemonic, NetworkType nettype, uint64_t restoreHeight = 0) = 0;
    Wallet * recoveryWallet(const std::string &path, const std::string &mnemonic, bool testnet = false, uint64_t restoreHeight = 0)         // deprecated
    {
        return recoveryWallet(path, mnemonic, testnet ? TESTNET : MAINNET, restoreHeight);
    }
 
    virtual Wallet * createWalletFromKeys(const std::string &path,
                                                    const std::string &password,
                                                    const std::string &language,
                                                    NetworkType nettype,
                                                    uint64_t restoreHeight,
                                                    const std::string &addressString,
                                                    const std::string &viewKeyString,
                                                    const std::string &spendKeyString = "",
                                                    uint64_t kdf_rounds = 1) = 0;
    Wallet * createWalletFromKeys(const std::string &path,
                                  const std::string &password,
                                  const std::string &language,
                                  bool testnet,
                                  uint64_t restoreHeight,
                                  const std::string &addressString,
                                  const std::string &viewKeyString,
                                  const std::string &spendKeyString = "")       // deprecated
    {
        return createWalletFromKeys(path, password, language, testnet ? TESTNET : MAINNET, restoreHeight, addressString, viewKeyString, spendKeyString);
    }
 
    virtual Wallet * createWalletFromKeys(const std::string &path, 
                                                    const std::string &language,
                                                    NetworkType nettype, 
                                                    uint64_t restoreHeight,
                                                    const std::string &addressString,
                                                    const std::string &viewKeyString,
                                                    const std::string &spendKeyString = "") = 0;
    Wallet * createWalletFromKeys(const std::string &path, 
                                  const std::string &language,
                                  bool testnet, 
                                  uint64_t restoreHeight,
                                  const std::string &addressString,
                                  const std::string &viewKeyString,
                                  const std::string &spendKeyString = "")           // deprecated
    {
        return createWalletFromKeys(path, language, testnet ? TESTNET : MAINNET, restoreHeight, addressString, viewKeyString, spendKeyString);
    }
 
    virtual Wallet * createWalletFromDevice(const std::string &path,
                                            const std::string &password,
                                            NetworkType nettype,
                                            const std::string &deviceName,
                                            uint64_t restoreHeight = 0,
                                            const std::string &subaddressLookahead = "",
                                            uint64_t kdf_rounds = 1,
                                            WalletListener * listener = nullptr) = 0;
 
    virtual bool closeWallet(Wallet *wallet, bool store = true) = 0;
 
    /*
     * ! checks if wallet with the given name already exists
     */
 
    virtual bool walletExists(const std::string &path) = 0;
 
    virtual bool verifyWalletPassword(const std::string &keys_file_name, const std::string &password, bool no_spend_key, uint64_t kdf_rounds = 1) const = 0;
 
    virtual bool queryWalletDevice(Wallet::Device& device_type, const std::string &keys_file_name, const std::string &password, uint64_t kdf_rounds = 1) const = 0;
 
    virtual std::vector<std::string> findWallets(const std::string &path) = 0;
 
    virtual std::string errorString() const = 0;
 
    virtual void setDaemonAddress(const std::string &address) = 0;
 
    virtual bool connected(uint32_t *version = NULL) = 0;
 
    virtual uint64_t blockchainHeight() = 0;
 
    virtual uint64_t blockchainTargetHeight() = 0;
 
    virtual uint64_t networkDifficulty() = 0;
 
    virtual double miningHashRate() = 0;
 
    virtual uint64_t blockTarget() = 0;
 
    virtual bool isMining() = 0;
 
    virtual bool startMining(const std::string &address, uint32_t threads = 1, bool background_mining = false, bool ignore_battery = true) = 0;
 
    virtual bool stopMining() = 0;
 
    virtual std::string resolveOpenAlias(const std::string &address, bool &dnssec_valid) const = 0;
 
    static std::tuple<bool, std::string, std::string, std::string, std::string> checkUpdates(const std::string &software, std::string subdir);
};
 
 
struct WalletManagerFactory
{
    // logging levels for underlying library
    enum LogLevel {
        LogLevel_Silent = -1,
        LogLevel_0 = 0,
        LogLevel_1 = 1,
        LogLevel_2 = 2,
        LogLevel_3 = 3,
        LogLevel_4 = 4,
        LogLevel_Min = LogLevel_Silent,
        LogLevel_Max = LogLevel_4
    };
 
    static WalletManager * getWalletManager();
    static void setLogLevel(int level);
    static void setLogCategories(const std::string &categories);
};
 
 
}
 
namespace Bitelectroneum = Electroneum;