// Copyright (c) 2018-2021, CUT coin
// Copyright (c) 2014-2018, 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 "account_view.h"
#include "checkpoints/checkpoints.h"
#include "common/password.h"
#include "common/unordered_containers_boost_serialization.h"
#include "confirmed_transfer_details.h"
#include "crypto/chacha.h"
#include "crypto/hash.h"
#include "cryptonote_basic/account.h"
#include "cryptonote_basic/account_boost_serialization.h"
#include "cryptonote_basic/cryptonote_basic_impl.h"
#include "cryptonote_basic/cryptonote_format_utils.h"
#include "cryptonote_basic/token.h"
#include "cryptonote_core/cryptonote_tx_utils.h"
#include "multisig_tx_set.h"
#include "include_base_utils.h"
#include "net/http_client.h"
#include "node_rpc_proxy.h"
#include "pending_tx.h"
#include "ringct/rctTypes.h"
#include "rpc/core_rpc_server_commands_defs.h"
#include "storages/http_abstract_invoke.h"
#include "transfer_details.h"
#include "tx_creation_context.h"
#include "tx_template.h"
#include "unconfirmed_transfer_details.h"
#include "wallet_errors.h"

#include <boost/program_options/options_description.hpp>
#include <boost/program_options/variables_map.hpp>
#include <boost/serialization/deque.hpp>
#include <boost/serialization/list.hpp>
#include <boost/serialization/vector.hpp>

#include <atomic>
#include <memory>

#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "wallet.wallet2"

class Serialization_portability_wallet_Test;

namespace tools
{
  class ringdb;
  class wallet2;
  class Notify;

  class wallet_keys_unlocker
  {
  public:
    wallet_keys_unlocker(wallet2 &w, const boost::optional<tools::password_container> &password);
    wallet_keys_unlocker(wallet2 &w, bool locked, const epee::wipeable_string &password);
    ~wallet_keys_unlocker();
  private:
    wallet2 &w;
    bool locked;
    crypto::chacha_key key;
  };

  class i_wallet2_callback
  {
  public:
    // Full wallet callbacks
    virtual void on_new_block(uint64_t height, const cryptonote::block& block) {}
    virtual void on_money_received(uint64_t                            height,
                                   const crypto::hash                 &txid,
                                   const cryptonote::transaction      &tx,
                                   const cryptonote::TokenId          &token_id,
                                   uint64_t                            amount,
                                   const cryptonote::subaddress_index &subaddr_index) {}
      // This callback is called when the wallet receives any new utxo.

    virtual void on_unconfirmed_money_received(uint64_t                            height,
                                               const crypto::hash                 &txid,
                                               const cryptonote::transaction      &tx,
                                               uint64_t                            amount,
                                               const cryptonote::subaddress_index &subaddr_index) {}

    virtual void on_money_spent(uint64_t                            height,
                                const crypto::hash                 &txid,
                                const cryptonote::transaction      &in_tx,
                                const cryptonote::TokenId          &token_id,
                                uint64_t                            amount,
                                const cryptonote::transaction      &spend_tx,
                                const cryptonote::subaddress_index &subaddr_index) {}
      // This callback is called when the wallet spends any utxo.

    virtual void on_skip_transaction(uint64_t height, const crypto::hash &txid, const cryptonote::transaction& tx) {}
    virtual boost::optional<epee::wipeable_string> on_get_password(const char *reason) { return boost::none; }
    // Light wallet callbacks
    virtual void on_lw_new_block(uint64_t height) {}
    virtual void on_lw_money_received(uint64_t height, const crypto::hash &txid, uint64_t amount) {}
    virtual void on_lw_unconfirmed_money_received(uint64_t height, const crypto::hash &txid, uint64_t amount) {}
    virtual void on_lw_money_spent(uint64_t height, const crypto::hash &txid, uint64_t amount) {}
    // Common callbacks
    virtual void on_pool_tx_removed(const crypto::hash &txid) {}
    virtual ~i_wallet2_callback() {}
  };

  struct tx_dust_policy
  {
    uint64_t dust_threshold;
    bool add_to_fee;
    cryptonote::account_public_address addr_for_dust;

    tx_dust_policy(uint64_t a_dust_threshold = 0, bool an_add_to_fee = true, cryptonote::account_public_address an_addr_for_dust = cryptonote::account_public_address())
      : dust_threshold(a_dust_threshold)
      , add_to_fee(an_add_to_fee)
      , addr_for_dust(an_addr_for_dust)
    {
    }
  };

  class hashchain
  {
  public:
    hashchain(): m_genesis(crypto::null_hash), m_offset(0) {}

    size_t size() const { return m_blockchain.size() + m_offset; }
    size_t offset() const { return m_offset; }
    const crypto::hash &genesis() const { return m_genesis; }
    void push_back(const crypto::hash &hash) { if (m_offset == 0 && m_blockchain.empty()) m_genesis = hash; m_blockchain.push_back(hash); }
    bool is_in_bounds(size_t idx) const { return idx >= m_offset && idx < size(); }
    const crypto::hash &operator[](size_t idx) const { return m_blockchain[idx - m_offset]; }
    crypto::hash &operator[](size_t idx) { return m_blockchain[idx - m_offset]; }
    void crop(size_t height) { m_blockchain.resize(height - m_offset); }
    void clear() { m_offset = 0; m_blockchain.clear(); }
    bool empty() const { return m_blockchain.empty() && m_offset == 0; }
    void trim(size_t height) { while (height > m_offset && m_blockchain.size() > 1) { m_blockchain.pop_front(); ++m_offset; } m_blockchain.shrink_to_fit(); }
    void refill(const crypto::hash &hash) { m_blockchain.push_back(hash); --m_offset; }

    template <class t_archive>
    inline void serialize(t_archive &a, const unsigned int ver)
    {
      a & m_offset;
      a & m_genesis;
      a & m_blockchain;
    }

  private:
    size_t m_offset;
    crypto::hash m_genesis;
    std::deque<crypto::hash> m_blockchain;
  };

  class wallet_keys_unlocker;
  class wallet2
  {
    friend class ::Serialization_portability_wallet_Test;
    friend class wallet_keys_unlocker;
  public:
    static constexpr const std::chrono::seconds rpc_timeout = std::chrono::minutes(3) + std::chrono::seconds(30);

    enum RefreshType {
      RefreshFull,
      RefreshOptimizeCoinbase,
      RefreshNoCoinbase,
      RefreshDefault = RefreshOptimizeCoinbase,
    };

    enum AskPasswordType {
      AskPasswordNever = 0,
      AskPasswordOnAction = 1,
      AskPasswordToDecrypt = 2,
    };

    static const char* tr(const char* str);

    static bool has_testnet_option(const boost::program_options::variables_map& vm);
    static bool has_stagenet_option(const boost::program_options::variables_map& vm);
    static std::string device_name_option(const boost::program_options::variables_map& vm);
    static void init_options(boost::program_options::options_description& desc_params);

    //! Uses stdin and stdout. Returns a wallet2 if no errors.
    static std::pair<std::unique_ptr<wallet2>, password_container> make_from_json(const boost::program_options::variables_map& vm, bool unattended, const std::string& json_file, const std::function<boost::optional<password_container>(const char *, bool)> &password_prompter);

    //! Uses stdin and stdout. Returns a wallet2 and password for `wallet_file` if no errors.
    static std::pair<std::unique_ptr<wallet2>, password_container>
      make_from_file(const boost::program_options::variables_map& vm, bool unattended, const std::string& wallet_file, const std::function<boost::optional<password_container>(const char *, bool)> &password_prompter);

    //! Uses stdin and stdout. Returns a wallet2 and password for wallet with no file if no errors.
    static std::pair<std::unique_ptr<wallet2>, password_container> make_new(const boost::program_options::variables_map& vm, bool unattended, const std::function<boost::optional<password_container>(const char *, bool)> &password_prompter);

    //! Just parses variables.
    static std::unique_ptr<wallet2> make_dummy(const boost::program_options::variables_map& vm, bool unattended, const std::function<boost::optional<password_container>(const char *, bool)> &password_prompter);

    static bool verify_password(const std::string& keys_file_name, const epee::wipeable_string& password, bool no_spend_key, hw::device &hwdev, uint64_t kdf_rounds);
    static bool query_device(hw::device::device_type& device_type, const std::string& keys_file_name, const epee::wipeable_string& password, uint64_t kdf_rounds = 1);

    wallet2(cryptonote::network_type nettype = cryptonote::MAINNET, uint64_t kdf_rounds = 1, bool unattended = false);
    ~wallet2();

    struct tx_scan_info_t
    {
      cryptonote::keypair in_ephemeral;
      crypto::key_image   ki;
      rct::key            mask;
      rct::xmr_amount     amount;
      rct::xmr_amount     money_transferred;
      bool                error;
      boost::optional<cryptonote::subaddress_receive_info> received;

      tx_scan_info_t(): error(true) {}
    };

    // The term "Unsigned tx" is not really a tx since it's not signed yet.
    // It doesnt have tx hash, key and the integrated address is not separated into addr + payment id.
    struct unsigned_tx_set
    {
      std::vector<tx_construction_data> txes;
      transfer_details_v                transfers;
    };

    struct signed_tx_set
    {
      pending_tx_v ptx;
      std::vector<crypto::key_image> key_images;
    };

    struct keys_file_data
    {
      crypto::chacha_iv iv;
      std::string account_data;

      BEGIN_SERIALIZE_OBJECT()
        FIELD(iv)
        FIELD(account_data)
      END_SERIALIZE()
    };

    struct cache_file_data
    {
      crypto::chacha_iv iv;
      std::string cache_data;

      BEGIN_SERIALIZE_OBJECT()
        FIELD(iv)
        FIELD(cache_data)
      END_SERIALIZE()
    };

    // GUI Address book
    struct address_book_row
    {
      cryptonote::account_public_address m_address;
      crypto::hash m_payment_id;
      std::string m_description;
      bool m_is_subaddress;
    };

    struct reserve_proof_entry
    {
      crypto::hash txid;
      uint64_t index_in_tx;
      crypto::public_key shared_secret;
      crypto::key_image key_image;
      crypto::signature shared_secret_sig;
      crypto::signature key_image_sig;
    };

    typedef std::tuple<uint64_t, crypto::public_key, rct::key> get_outs_entry;

    struct parsed_block
    {
      crypto::hash hash;
      cryptonote::block block;
      std::vector<cryptonote::transaction> txes;
      cryptonote::COMMAND_RPC_GET_BLOCKS_FAST::block_output_indices o_indices;
      bool error;
    };

    struct is_out_data
    {
      crypto::public_key pkey;
      crypto::key_derivation derivation;
      std::vector<boost::optional<cryptonote::subaddress_receive_info>> received;
    };

    struct tx_cache_data
    {
      std::vector<cryptonote::tx_extra_field> tx_extra_fields;
      std::vector<is_out_data> primary;
      std::vector<is_out_data> additional;
    };

    /*!
     * \brief  Generates a wallet or restores one.
     * \param  wallet_              Name of wallet file
     * \param  password             Password of wallet file
     * \param  multisig_data        The multisig restore info and keys
     * \param  create_address_file  Whether to create an address file
     */
    void generate(const std::string& wallet_, const epee::wipeable_string& password,
      const epee::wipeable_string& multisig_data, bool create_address_file = false);

    /*!
     * \brief Generates a wallet or restores one.
     * \param  wallet_              Name of wallet file
     * \param  password             Password of wallet file
     * \param  recovery_param       If it is a restore, the recovery key
     * \param  recover              Whether it is a restore
     * \param  two_random           Whether it is a non-deterministic wallet
     * \param  create_address_file  Whether to create an address file
     * \return                      The secret key of the generated wallet
     */
    crypto::secret_key generate(const std::string& wallet, const epee::wipeable_string& password,
      const crypto::secret_key& recovery_param = crypto::secret_key(), bool recover = false,
      bool two_random = false, bool create_address_file = false);
    /*!
     * \brief Creates a wallet from a public address and a spend/view secret key pair.
     * \param  wallet_                 Name of wallet file
     * \param  password                Password of wallet file
     * \param  account_public_address  The account's public address
     * \param  spendkey                spend secret key
     * \param  viewkey                 view secret key
     * \param  create_address_file     Whether to create an address file
     */
    void generate(const std::string& wallet, const epee::wipeable_string& password,
      const cryptonote::account_public_address &account_public_address,
      const crypto::secret_key& spendkey, const crypto::secret_key& viewkey, bool create_address_file = false);
    /*!
     * \brief Creates a watch only wallet from a public address and a view secret key.
     * \param  wallet_                 Name of wallet file
     * \param  password                Password of wallet file
     * \param  account_public_address  The account's public address
     * \param  viewkey                 view secret key
     * \param  create_address_file     Whether to create an address file
     */
    void generate(const std::string& wallet, const epee::wipeable_string& password,
      const cryptonote::account_public_address &account_public_address,
      const crypto::secret_key& viewkey = crypto::secret_key(), bool create_address_file = false);
    /*!
     * \brief Restore a wallet hold by an HW.
     * \param  wallet_        Name of wallet file
     * \param  password       Password of wallet file
     * \param  device_name    name of HW to use
     * \param  create_address_file     Whether to create an address file
     */
    void restore(const std::string& wallet_, const epee::wipeable_string& password, const std::string &device_name, bool create_address_file = false);

    /*!
     * \brief Creates a multisig wallet
     * \return empty if done, non empty if we need to send another string
     * to other participants
     */
    std::string make_multisig(const epee::wipeable_string &password,
      const std::vector<std::string> &info,
      uint32_t threshold);
    /*!
     * \brief Creates a multisig wallet
     * \return empty if done, non empty if we need to send another string
     * to other participants
     */
    std::string make_multisig(const epee::wipeable_string &password,
      const std::vector<crypto::secret_key> &view_keys,
      const std::vector<crypto::public_key> &spend_keys,
      uint32_t threshold);
    std::string exchange_multisig_keys(const epee::wipeable_string &password,
      const std::vector<std::string> &info);
    /*!
     * \brief Any but first round of keys exchange
     */
    std::string exchange_multisig_keys(const epee::wipeable_string &password,
      std::unordered_set<crypto::public_key> pkeys,
      std::vector<crypto::public_key> signers);
    /*!
     * \brief Finalizes creation of a multisig wallet
     */
    bool finalize_multisig(const epee::wipeable_string &password, const std::vector<std::string> &info);
    /*!
     * \brief Finalizes creation of a multisig wallet
     */
    bool finalize_multisig(const epee::wipeable_string &password, std::unordered_set<crypto::public_key> pkeys, std::vector<crypto::public_key> signers);
    /*!
     * Get a packaged multisig information string
     */
    std::string get_multisig_info() const;
    /*!
     * Verifies and extracts keys from a packaged multisig information string
     */
    static bool verify_multisig_info(const std::string &data, crypto::secret_key &skey, crypto::public_key &pkey);
    /*!
     * Verifies and extracts keys from a packaged multisig information string
     */
    static bool verify_extra_multisig_info(const std::string &data, std::unordered_set<crypto::public_key> &pkeys, crypto::public_key &signer);
    /*!
     * Export multisig info
     * This will generate and remember new k values
     */
    cryptonote::blobdata export_multisig();
    /*!
     * Import a set of multisig info from multisig partners
     * \return the number of inputs which were imported
     */
    size_t import_multisig(std::vector<cryptonote::blobdata> info);
    /*!
     * \brief Rewrites to the wallet file for wallet upgrade (doesn't generate key, assumes it's already there)
     * \param wallet_name Name of wallet file (should exist)
     * \param password    Password for wallet file
     */
    void rewrite(const std::string& wallet_name, const epee::wipeable_string& password);
    void write_watch_only_wallet(const std::string& wallet_name, const epee::wipeable_string& password, std::string &new_keys_filename);
    void load(const std::string& wallet, const epee::wipeable_string& password);
    void store();
    /*!
     * \brief store_to  Stores wallet to another file(s), deleting old ones
     * \param path      Path to the wallet file (keys and address filenames will be generated based on this filename)
     * \param password  Password to protect new wallet (TODO: probably better save the password in the wallet object?)
     */
    void store_to(const std::string &path, const epee::wipeable_string &password);

    std::string path() const;

    /*!
     * \brief verifies given password is correct for default wallet keys file
     */
    bool verify_password(const epee::wipeable_string& password);
    cryptonote::account_base& get_account(){return m_account;}
    const cryptonote::account_base& get_account()const{return m_account;}

    void encrypt_keys(const crypto::chacha_key &key);
    void encrypt_keys(const epee::wipeable_string &password);
    void decrypt_keys(const crypto::chacha_key &key);
    void decrypt_keys(const epee::wipeable_string &password);

    void set_refresh_from_block_height(uint64_t height) {m_refresh_from_block_height = height;}
    uint64_t get_refresh_from_block_height() const {return m_refresh_from_block_height;}

    void explicit_refresh_from_block_height(bool expl) {m_explicit_refresh_from_block_height = expl;}
    bool explicit_refresh_from_block_height() const {return m_explicit_refresh_from_block_height;}

    bool deinit();
    bool init(std::string daemon_address = "http://localhost:8080",
      boost::optional<epee::net_utils::http::login> daemon_login = boost::none, uint64_t upper_transaction_weight_limit = 0, bool ssl = false, bool trusted_daemon = false);

    void stop() { m_run.store(false, std::memory_order_relaxed); }

    i_wallet2_callback* callback() const { return m_callback; }
    void callback(i_wallet2_callback* callback) { m_callback = callback; }

    bool is_trusted_daemon() const { return m_trusted_daemon; }
    void set_trusted_daemon(bool trusted) { m_trusted_daemon = trusted; }

    /*!
     * \brief Checks if deterministic wallet
     */
    bool is_deterministic() const;
    bool get_seed(epee::wipeable_string& electrum_words, const epee::wipeable_string &passphrase = epee::wipeable_string()) const;

    /*!
    * \brief Checks if light wallet. A light wallet sends view key to a server where the blockchain is scanned.
    */
    bool light_wallet() const { return m_light_wallet; }
    void set_light_wallet(bool light_wallet) { m_light_wallet = light_wallet; }
    uint64_t get_light_wallet_scanned_block_height() const { return m_light_wallet_scanned_block_height; }
    uint64_t get_light_wallet_blockchain_height() const { return m_light_wallet_blockchain_height; }

    /*!
     * \brief Gets the seed language
     */
    const std::string &get_seed_language() const;
    /*!
     * \brief Sets the seed language
     */
    void set_seed_language(const std::string &language);

    // Subaddress scheme
    cryptonote::account_public_address get_subaddress(const cryptonote::subaddress_index& index) const;
    cryptonote::account_public_address get_address() const { return get_subaddress({0,0}); }
    boost::optional<cryptonote::subaddress_index> get_subaddress_index(const cryptonote::account_public_address& address) const;
    crypto::public_key get_subaddress_spend_public_key(const cryptonote::subaddress_index& index) const;
    std::vector<crypto::public_key> get_subaddress_spend_public_keys(uint32_t account, uint32_t begin, uint32_t end) const;
    std::string get_subaddress_as_str(const cryptonote::subaddress_index& index) const;
    std::string get_address_as_str() const { return get_subaddress_as_str({0, 0}); }
    std::string get_integrated_address_as_str(const crypto::hash8& payment_id) const;
    void add_subaddress_account(const std::string& label);
    size_t get_num_subaddress_accounts() const { return m_subaddress_labels.size(); }
    size_t get_num_subaddresses(uint32_t index_major) const { return index_major < m_subaddress_labels.size() ? m_subaddress_labels[index_major].size() : 0; }
    void add_subaddress(uint32_t index_major, const std::string& label); // throws when index is out of bound
    void expand_subaddresses(const cryptonote::subaddress_index& index);
    std::string get_subaddress_label(const cryptonote::subaddress_index& index) const;
    void set_subaddress_label(const cryptonote::subaddress_index &index, const std::string &label);
    void set_subaddress_lookahead(size_t major, size_t minor);
    std::pair<size_t, size_t> get_subaddress_lookahead() const { return {m_subaddress_lookahead_major, m_subaddress_lookahead_minor}; }
    /*!
     * \brief Tells if the wallet file is deprecated.
     */
    bool is_deprecated() const;
    void refresh(bool trusted_daemon);
    void refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blocks_fetched);
    void refresh(bool trusted_daemon, uint64_t start_height, uint64_t & blocks_fetched, bool& received_money);
    bool refresh(bool trusted_daemon, uint64_t & blocks_fetched, bool& received_money, bool& ok);

    void set_refresh_type(RefreshType refresh_type) { m_refresh_type = refresh_type; }
    RefreshType get_refresh_type() const { return m_refresh_type; }

    cryptonote::network_type nettype() const { return m_nettype; }
    bool watch_only() const { return m_watch_only; }
    bool multisig(bool *ready = nullptr, uint32_t *threshold = nullptr, uint32_t *total = nullptr) const;
    bool has_multisig_partial_key_images() const;
    bool has_unknown_key_images() const;
    bool get_multisig_seed(epee::wipeable_string& seed, const epee::wipeable_string &passphrase = std::string(), bool raw = true) const;
    bool key_on_device() const { return get_device_type() != hw::device::device_type::SOFTWARE; }
    hw::device::device_type get_device_type() const { return m_key_device_type; }
    bool reconnect_device();

    // locked & unlocked balance of given or current subaddress account
    uint64_t balance(uint32_t subaddr_index_major) const;
    uint64_t unlocked_balance(uint32_t subaddr_index_major) const;
    // locked & unlocked balance per subaddress of given or current subaddress account
    std::unordered_map<uint32_t, uint64_t> balance_per_subaddress(uint32_t subaddr_index_major) const;
    std::unordered_map<uint32_t, uint64_t> unlocked_balance_per_subaddress(uint32_t subaddr_index_major) const;
    // all locked & unlocked balances of all subaddress accounts
    uint64_t balance_all() const;
    uint64_t unlocked_balance_all() const;
    template<typename T>
    void transfer_selected(const std::vector<cryptonote::tx_destination_entry>& dsts, const std::vector<size_t>& selected_transfers, size_t fake_outputs_count,
      std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs,
      uint64_t unlock_time, uint64_t fee, const std::vector<uint8_t>& extra, T destination_split_strategy, const tx_dust_policy& dust_policy, cryptonote::transaction& tx, pending_tx &ptx);
    void transfer_selected_rct(std::vector<cryptonote::tx_destination_entry> dsts, const std::vector<size_t>& selected_transfers, size_t fake_outputs_count,
      std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, uint64_t unlock_time, uint64_t fee, const std::vector<uint8_t>& extra,
      cryptonote::transaction& tx, pending_tx &ptx, rct::RangeProofType range_proof_type, bool is_stake = false);

    void transfer_token_rct(TxCreationContext                        &t_data,
                            size_t                                    fake_outputs_count,
                            std::vector<std::vector<get_outs_entry>> &outs,
                            uint64_t                                  unlock_time,
                            uint64_t                                  fee,
                            const std::vector<uint8_t>               &extra,
                            cryptonote::transaction&                  tx,
                            pending_tx                               &ptx,
                            rct::RangeProofType                       range_proof_type,
                            bool                                      is_stake = false);

    void commit_tx(pending_tx& ptx_vector);
    void commit_tx(pending_tx_v &ptx_vector);
    bool save_tx(const pending_tx_v &ptx_vector, const std::string &filename) const;
    std::string dump_tx_to_str(const pending_tx_v &ptx_vector) const;
    std::string save_multisig_tx(multisig_tx_set txs);
    bool save_multisig_tx(const multisig_tx_set &txs, const std::string &filename);
    std::string save_multisig_tx(const pending_tx_v &ptx_vector);
    bool save_multisig_tx(const pending_tx_v &ptx_vector, const std::string &filename);
    multisig_tx_set make_multisig_tx_set(const pending_tx_v &ptx_vector) const;
    // load unsigned tx from file and sign it. Takes confirmation callback as argument. Used by the cli wallet
    bool sign_tx(const std::string &unsigned_filename, const std::string &signed_filename, pending_tx_v &ptx, std::function<bool(const unsigned_tx_set&)> accept_func = nullptr, bool export_raw = false);
    // sign unsigned tx. Takes unsigned_tx_set as argument. Used by GUI
    bool sign_tx(unsigned_tx_set &exported_txs, const std::string &signed_filename, pending_tx_v &ptx, bool export_raw = false);
    bool sign_tx(unsigned_tx_set &exported_txs, pending_tx_v &ptx, signed_tx_set &signed_txs);
    std::string sign_tx_dump_to_str(unsigned_tx_set &exported_txs, pending_tx_v &ptx, signed_tx_set &signed_txes);
    // load unsigned_tx_set from file.
    bool load_unsigned_tx(const std::string &unsigned_filename, unsigned_tx_set &exported_txs) const;
    bool parse_unsigned_tx_from_str(const std::string &unsigned_tx_st, unsigned_tx_set &exported_txs) const;
    bool load_tx(const std::string &signed_filename, pending_tx_v &ptx, std::function<bool(const signed_tx_set&)> accept_func = nullptr);
    bool parse_tx_from_str(const std::string &signed_tx_st, pending_tx_v &ptx, std::function<bool(const signed_tx_set &)> accept_func);
    pending_tx_v create_transactions_2(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t>& extra, uint32_t subaddr_account, std::set<uint32_t> subaddr_indices);     // pass subaddr_indices by value on purpose
    pending_tx_v create_token_transactions_2(std::vector<cryptonote::tx_destination_entry> dsts, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t>& extra, uint32_t subaddr_account, std::set<uint32_t> subaddr_indices);
    pending_tx_v create_transactions_all(uint64_t below, const cryptonote::account_public_address &address, bool is_subaddress, const size_t outputs, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t>& extra, uint32_t subaddr_account, std::set<uint32_t> subaddr_indices);
    pending_tx_v create_transactions_single(const crypto::key_image &ki, const cryptonote::account_public_address &address, bool is_subaddress, const size_t outputs, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t>& extra);
    pending_tx_v create_transactions_from(const cryptonote::account_public_address &address, bool is_subaddress, const size_t outputs, std::vector<size_t> unused_transfers_indices, std::vector<size_t> unused_dust_indices, const size_t fake_outs_count, const uint64_t unlock_time, uint32_t priority, const std::vector<uint8_t>& extra);
    size_t estimate_pos_tx_size(std::vector<std::vector<get_outs_entry>> &outs, size_t fake_outs_count, const transfer_details &pos_output, const std::vector<uint8_t> &extra);
    void create_stake_transaction(pending_tx &stake_ptx, std::vector<std::vector<get_outs_entry>> &outs, size_t fake_outs_count, const transfer_details &pos_output, const std::vector<uint8_t> &extra);
    bool load_multisig_tx(cryptonote::blobdata blob, multisig_tx_set &exported_txs, std::function<bool(const multisig_tx_set&)> accept_func = nullptr);
    bool load_multisig_tx_from_file(const std::string &filename, multisig_tx_set &exported_txs, std::function<bool(const multisig_tx_set&)> accept_func = nullptr);
    bool sign_multisig_tx_from_file(const std::string &filename, std::vector<crypto::hash> &txids, std::function<bool(const multisig_tx_set&)> accept_func);
    bool sign_multisig_tx(multisig_tx_set &exported_txs, std::vector<crypto::hash> &txids);
    bool sign_multisig_tx_to_file(multisig_tx_set &exported_txs, const std::string &filename, std::vector<crypto::hash> &txids);
    pending_tx_v create_unmixable_sweep_transactions();
    void discard_unmixable_outputs();
    bool check_connection(uint32_t *version = nullptr, uint32_t timeout = 200000);
    AccountView get_account_view(uint32_t subaddr_index_major) const;
    void get_transfers(transfer_details_v &incoming_transfers) const;
    void get_payments(const crypto::hash& payment_id, std::list<payment_details>& payments, uint64_t min_height = 0, const boost::optional<uint32_t>& subaddr_account = boost::none, const std::set<uint32_t>& subaddr_indices = {}) const;
    void get_payments(std::list<std::pair<crypto::hash, payment_details>>& payments, uint64_t min_height, uint64_t max_height = (uint64_t)-1, const boost::optional<uint32_t>& subaddr_account = boost::none, const std::set<uint32_t>& subaddr_indices = {}) const;
    void get_payments_out(std::list<std::pair<crypto::hash, confirmed_transfer_details>>& confirmed_payments,
      uint64_t min_height, uint64_t max_height = (uint64_t)-1, const boost::optional<uint32_t>& subaddr_account = boost::none, const std::set<uint32_t>& subaddr_indices = {}) const;
    void get_unconfirmed_payments_out(std::list<std::pair<crypto::hash,unconfirmed_transfer_details>>& unconfirmed_payments, const boost::optional<uint32_t>& subaddr_account = boost::none, const std::set<uint32_t>& subaddr_indices = {}) const;
    void get_unconfirmed_payments(std::list<std::pair<crypto::hash, pool_payment_details>> &unconfirmed_payments, const boost::optional<uint32_t>& subaddr_account = boost::none, const std::set<uint32_t>& subaddr_indices = {}) const;

    uint64_t get_blockchain_current_height() const { return m_light_wallet_blockchain_height ? m_light_wallet_blockchain_height : m_blockchain.size(); }
    void rescan_spent();
    void rescan_blockchain(bool refresh = true);
    bool is_transfer_unlocked(const transfer_details& td) const;
    bool is_transfer_unlocked(uint64_t unlock_time, uint64_t block_height) const;

    uint64_t get_last_block_reward() const { return m_last_block_reward; }

    void token_genesis_transaction(const uint32_t                 subaddress_account,
                                   const cryptonote::TokenSummary &token_summary,
                                   pending_tx_v                   &ptx_vector,
                                   size_t                          custom_fake_outs_count = 0);

    pending_tx_v token_genesis_basic(const cryptonote::tx_destination_entry &token_destination,
                                     const size_t                            fake_outs_count,
                                     const uint64_t                          unlock_time,
                                     const cryptonote::TokenType            &token_type,
                                     std::vector<uint8_t>                   &extra);

    void token_genesis_rct(cryptonote::tx_destination_entry                         &coinburn_destination,
                           const cryptonote::tx_destination_entry                   &token_destination,
                           const std::vector<size_t>                                &selected_cut_transfers,
                           const cryptonote::TokenType                              &token_type,
                           size_t                                                    fake_outputs_count,
                           std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs,
                           uint64_t                                                  unlock_time,
                           uint64_t                                                  fee,
                           std::vector<uint8_t>                                     &extra,
                           cryptonote::transaction                                  &tx,
                           pending_tx                                               &ptx);

    template <class t_archive>
    inline void serialize(t_archive &a, const unsigned int ver)
    {
      uint64_t dummy_refresh_height = 0; // moved to keys file
      if(ver < 5)
        return;
      if (ver < 19)
      {
        std::vector<crypto::hash> blockchain;
        a & blockchain;
        for (const auto &b: blockchain)
        {
          m_blockchain.push_back(b);
        }
      }
      else
      {
        a & m_blockchain;
      }
      a & m_transfers;
      a & m_account_public_address;
      a & m_key_images;
      if(ver < 6)
        return;
      a & m_unconfirmed_txs;
      if(ver < 7)
        return;
      a & m_payments;
      if(ver < 8)
        return;
      a & m_tx_keys;
      if(ver < 9)
        return;
      a & m_confirmed_txs;
      if(ver < 11)
        return;
      a & dummy_refresh_height;
      if(ver < 12)
        return;
      a & m_tx_notes;
      if(ver < 13)
        return;
      if (ver < 17)
      {
        // we're loading an old version, where m_unconfirmed_payments was a std::map
        std::unordered_map<crypto::hash, payment_details> m;
        a & m;
        for (std::unordered_map<crypto::hash, payment_details>::const_iterator i = m.begin(); i != m.end(); ++i)
          m_unconfirmed_payments.insert(std::make_pair(i->first, pool_payment_details{i->second, false}));
      }
      if(ver < 14)
        return;
      if(ver < 15)
      {
        // we're loading an older wallet without a pubkey map, rebuild it
        for (size_t i = 0; i < m_transfers.size(); ++i)
        {
          const transfer_details &td = m_transfers[i];
          const cryptonote::tx_out &out = td.m_tx.vout[td.m_internal_output_index];
          const cryptonote::txout_to_key &o = boost::get<const cryptonote::txout_to_key>(out.target);
          m_pub_keys.emplace(o.key, i);
        }
        return;
      }
      a & m_pub_keys;
      if(ver < 16)
        return;
      a & m_address_book;
      if(ver < 17)
        return;
      if (ver < 22)
      {
        // we're loading an old version, where m_unconfirmed_payments payload was payment_details
        std::unordered_multimap<crypto::hash, payment_details> m;
        a & m;
        for (const auto &i: m)
          m_unconfirmed_payments.insert(std::make_pair(i.first, pool_payment_details{i.second, false}));
      }
      if(ver < 18)
        return;
      a & m_scanned_pool_txs[0];
      a & m_scanned_pool_txs[1];
      if (ver < 20)
        return;
      a & m_subaddresses;
      std::unordered_map<cryptonote::subaddress_index, crypto::public_key> dummy_subaddresses_inv;
      a & dummy_subaddresses_inv;
      a & m_subaddress_labels;
      a & m_additional_tx_keys;
      if(ver < 21)
        return;
      a & m_attributes;
      if(ver < 22)
        return;
      a & m_unconfirmed_payments;
      if(ver < 23)
        return;
      a & m_account_tags;
      if(ver < 24)
        return;
      a & m_ring_history_saved;
      if(ver < 25)
        return;
      a & m_last_block_reward;
    }

    /*!
     * \brief  Check if wallet keys and bin files exist
     * \param  file_path           Wallet file path
     * \param  keys_file_exists    Whether keys file exists
     * \param  wallet_file_exists  Whether bin file exists
     */
    static void wallet_exists(const std::string& file_path, bool& keys_file_exists, bool& wallet_file_exists);
    /*!
     * \brief  Check if wallet file path is valid format
     * \param  file_path      Wallet file path
     * \return                Whether path is valid format
     */
    static bool wallet_valid_path_format(const std::string& file_path);
    static bool parse_long_payment_id(const std::string& payment_id_str, crypto::hash& payment_id);
    static bool parse_short_payment_id(const std::string& payment_id_str, crypto::hash8& payment_id);
    static bool parse_payment_id(const std::string& payment_id_str, crypto::hash& payment_id);

    bool always_confirm_transfers() const { return m_always_confirm_transfers; }
    void always_confirm_transfers(bool always) { m_always_confirm_transfers = always; }
    bool print_ring_members() const { return m_print_ring_members; }
    void print_ring_members(bool value) { m_print_ring_members = value; }
    bool store_tx_info() const { return m_store_tx_info; }
    void store_tx_info(bool store) { m_store_tx_info = store; }
    uint32_t default_mixin() const { return m_default_mixin; }
    void default_mixin(uint32_t m) { m_default_mixin = m; }
    uint32_t get_default_priority() const { return m_default_priority; }
    void set_default_priority(uint32_t p) { m_default_priority = p; }
    bool auto_refresh() const { return m_auto_refresh; }
    void auto_refresh(bool r) { m_auto_refresh = r; }
    bool confirm_missing_payment_id() const { return m_confirm_missing_payment_id; }
    void confirm_missing_payment_id(bool always) { m_confirm_missing_payment_id = always; }
    AskPasswordType ask_password() const { return m_ask_password; }
    void ask_password(AskPasswordType ask) { m_ask_password = ask; }
    void set_min_output_count(uint32_t count) { m_min_output_count = count; }
    uint32_t get_min_output_count() const { return m_min_output_count; }
    void set_min_output_value(uint64_t value) { m_min_output_value = value; }
    uint64_t get_min_output_value() const { return m_min_output_value; }
    void merge_destinations(bool merge) { m_merge_destinations = merge; }
    bool merge_destinations() const { return m_merge_destinations; }
    bool confirm_backlog() const { return m_confirm_backlog; }
    void confirm_backlog(bool always) { m_confirm_backlog = always; }
    void set_confirm_backlog_threshold(uint32_t threshold) { m_confirm_backlog_threshold = threshold; };
    uint32_t get_confirm_backlog_threshold() const { return m_confirm_backlog_threshold; };
    bool confirm_export_overwrite() const { return m_confirm_export_overwrite; }
    void confirm_export_overwrite(bool always) { m_confirm_export_overwrite = always; }
    bool auto_low_priority() const { return m_auto_low_priority; }
    void auto_low_priority(bool value) { m_auto_low_priority = value; }
    bool segregate_pre_fork_outputs() const { return m_segregate_pre_fork_outputs; }
    void segregate_pre_fork_outputs(bool value) { m_segregate_pre_fork_outputs = value; }
    bool key_reuse_mitigation2() const { return m_key_reuse_mitigation2; }
    void key_reuse_mitigation2(bool value) { m_key_reuse_mitigation2 = value; }
    uint64_t segregation_height() const { return m_segregation_height; }
    void segregation_height(uint64_t height) { m_segregation_height = height; }
    bool ignore_fractional_outputs() const { return m_ignore_fractional_outputs; }
    void ignore_fractional_outputs(bool value) { m_ignore_fractional_outputs = value; }
    bool confirm_non_default_ring_size() const { return m_confirm_non_default_ring_size; }
    void confirm_non_default_ring_size(bool always) { m_confirm_non_default_ring_size = always; }
    const std::string & device_name() const { return m_device_name; }
    void device_name(const std::string & device_name) { m_device_name = device_name; }

    bool get_tx_key(const crypto::hash &txid, crypto::secret_key &tx_key, std::vector<crypto::secret_key> &additional_tx_keys) const;
    void set_tx_key(const crypto::hash &txid, const crypto::secret_key &tx_key, const std::vector<crypto::secret_key> &additional_tx_keys);
    void check_tx_key(const crypto::hash &txid, const crypto::secret_key &tx_key, const std::vector<crypto::secret_key> &additional_tx_keys, const cryptonote::account_public_address &address, uint64_t &received, bool &in_pool, uint64_t &confirmations);
    void check_tx_key_helper(const crypto::hash &txid, const crypto::key_derivation &derivation, const std::vector<crypto::key_derivation> &additional_derivations, const cryptonote::account_public_address &address, uint64_t &received, bool &in_pool, uint64_t &confirmations);
    std::string get_tx_proof(const crypto::hash &txid, const cryptonote::account_public_address &address, bool is_subaddress, const std::string &message);
    bool check_tx_proof(const crypto::hash &txid, const cryptonote::account_public_address &address, bool is_subaddress, const std::string &message, const std::string &sig_str, uint64_t &received, bool &in_pool, uint64_t &confirmations);

    std::string get_spend_proof(const crypto::hash &txid, const std::string &message);
    bool check_spend_proof(const crypto::hash &txid, const std::string &message, const std::string &sig_str);

    /*!
     * \brief  Generates a proof that proves the reserve of unspent funds
     * \param  account_minreserve       When specified, collect outputs only belonging to the given account and prove the smallest reserve above the given amount
     *                                  When unspecified, proves for all unspent outputs across all accounts
     * \param  message                  Arbitrary challenge message to be signed together
     * \return                          Signature string
     */
    std::string get_reserve_proof(const boost::optional<std::pair<uint32_t, uint64_t>> &account_minreserve, const std::string &message);
    /*!
     * \brief  Verifies a proof of reserve
     * \param  address                  The signer's address
     * \param  message                  Challenge message used for signing
     * \param  sig_str                  Signature string
     * \param  total                    [OUT] the sum of funds included in the signature
     * \param  spent                    [OUT] the sum of spent funds included in the signature
     * \return                          true if the signature verifies correctly
     */
    bool check_reserve_proof(const cryptonote::account_public_address &address, const std::string &message, const std::string &sig_str, uint64_t &total, uint64_t &spent);

   /*!
    * \brief GUI Address book get/store
    */
    std::vector<address_book_row> get_address_book() const { return m_address_book; }
    bool add_address_book_row(const cryptonote::account_public_address &address, const crypto::hash &payment_id, const std::string &description, bool is_subaddress);
    bool delete_address_book_row(std::size_t row_id);

    uint64_t get_num_rct_outputs();
    size_t get_num_transfer_details() const { return m_transfers.size(); }
    const transfer_details &get_transfer_details(size_t idx) const;

    void get_hard_fork_info(uint8_t version, uint64_t &earliest_height) const;
    bool use_fork_rules(uint8_t version, int64_t early_blocks = 0) const;
    int get_fee_algorithm() const;

    std::string get_wallet_file() const;
    std::string get_keys_file() const;
    std::string get_daemon_address() const;
    const boost::optional<epee::net_utils::http::login>& get_daemon_login() const { return m_daemon_login; }
    uint64_t get_daemon_blockchain_height(std::string& err) const;
    uint64_t get_daemon_blockchain_target_height(std::string& err);
   /*!
    * \brief Calculates the approximate blockchain height from current date/time.
    */
    uint64_t get_approximate_blockchain_height() const;
    uint64_t estimate_blockchain_height();
    std::vector<size_t> select_available_outputs_from_histogram(uint64_t count, bool atleast, bool unlocked, bool allow_rct);
    std::vector<size_t> select_available_outputs(const std::function<bool(const transfer_details &td)> &f) const;
    std::vector<size_t> select_available_unmixable_outputs();
    std::vector<size_t> select_available_mixable_outputs();

    size_t pop_best_value_from(const transfer_details_v &transfers, std::vector<size_t> &unused_dust_indices, const std::vector<size_t>& selected_transfers, bool smallest = false) const;
    size_t pop_best_value(std::vector<size_t> &unused_dust_indices, const std::vector<size_t>& selected_transfers, bool smallest = false) const;

    void set_tx_note(const crypto::hash &txid, const std::string &note);
    std::string get_tx_note(const crypto::hash &txid) const;

    void set_description(const std::string &description);
    std::string get_description() const;

    /*!
     * \brief  Get the list of registered account tags.
     * \return first.Key=(tag's name), first.Value=(tag's label), second[i]=(i-th account's tag)
     */
    const std::pair<std::map<std::string, std::string>, std::vector<std::string>>& get_account_tags();
    /*!
     * \brief  Set a tag to the given accounts.
     * \param  account_indices  Indices of accounts.
     * \param  tag              Tag's name. If empty, the accounts become untagged.
     */
    void set_account_tag(const std::set<uint32_t> account_indices, const std::string& tag);
    /*!
     * \brief  Set the label of the given tag.
     * \param  tag            Tag's name (which must be non-empty).
     * \param  description    Tag's description.
     */
    void set_account_tag_description(const std::string& tag, const std::string& description);

    std::string sign(const std::string &data) const;
    bool verify(const std::string &data, const cryptonote::account_public_address &address, const std::string &signature) const;

    /*!
     * \brief sign_multisig_participant signs given message with the multisig public signer key
     * \param data                      message to sign
     * \throws                          if wallet is not multisig
     * \return                          signature
     */
    std::string sign_multisig_participant(const std::string& data) const;
    /*!
     * \brief verify_with_public_key verifies message was signed with given public key
     * \param data                   message
     * \param public_key             public key to check signature
     * \param signature              signature of the message
     * \return                       true if the signature is correct
     */
    bool verify_with_public_key(const std::string &data, const crypto::public_key &public_key, const std::string &signature) const;

    // Import/Export wallet data
    std::vector<transfer_details> export_outputs() const;
    std::string export_outputs_to_str() const;
    size_t import_outputs(const std::vector<transfer_details> &outputs);
    size_t import_outputs_from_str(const std::string &outputs_st);
    payment_container export_payments() const;
    void import_payments(const payment_container &payments);
    void import_payments_out(const std::list<std::pair<crypto::hash, confirmed_transfer_details>> &confirmed_payments);
    std::tuple<size_t, crypto::hash, std::vector<crypto::hash>> export_blockchain() const;
    void import_blockchain(const std::tuple<size_t, crypto::hash, std::vector<crypto::hash>> &bc);
    bool export_key_images(const std::string &filename) const;
    std::vector<std::pair<crypto::key_image, crypto::signature>> export_key_images() const;
    uint64_t import_key_images(const std::vector<std::pair<crypto::key_image, crypto::signature>> &signed_key_images, uint64_t &spent, uint64_t &unspent, bool check_spent = true);
    uint64_t import_key_images(const std::string &filename, uint64_t &spent, uint64_t &unspent);

    void update_pool_state(bool refreshed = false);
    void remove_obsolete_pool_txs(const std::vector<crypto::hash> &tx_hashes);

    std::string encrypt(const char *plaintext, size_t len, const crypto::secret_key &skey, bool authenticated = true) const;
    std::string encrypt(const epee::span<char> &span, const crypto::secret_key &skey, bool authenticated = true) const;
    std::string encrypt(const std::string &plaintext, const crypto::secret_key &skey, bool authenticated = true) const;
    std::string encrypt(const epee::wipeable_string &plaintext, const crypto::secret_key &skey, bool authenticated = true) const;
    std::string encrypt_with_view_secret_key(const std::string &plaintext, bool authenticated = true) const;
    template<typename T=std::string> T decrypt(const std::string &ciphertext, const crypto::secret_key &skey, bool authenticated = true) const;
    std::string decrypt_with_view_secret_key(const std::string &ciphertext, bool authenticated = true) const;

    std::string make_uri(const std::string &address, const std::string &payment_id, uint64_t amount, const std::string &tx_description, const std::string &recipient_name, std::string &error) const;
    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);

    uint64_t get_blockchain_height_by_date(uint16_t year, uint8_t month, uint8_t day);    // 1<=month<=12, 1<=day<=31

    bool is_synced() const;

    std::vector<std::pair<uint64_t, uint64_t>> estimate_backlog(const std::vector<std::pair<double, double>> &fee_levels);
    std::vector<std::pair<uint64_t, uint64_t>> estimate_backlog(uint64_t min_tx_weight, uint64_t max_tx_weight, const std::vector<uint64_t> &fees);

    uint64_t get_fee_multiplier(uint32_t priority, int fee_algorithm = -1) const;
    uint64_t get_base_fee() const;
    uint64_t get_fee_quantization_mask() const;
    uint64_t get_min_ring_size() const;
    uint64_t get_max_ring_size() const;
    uint64_t adjust_mixin(uint64_t mixin) const;
    uint32_t adjust_priority(uint32_t priority);

    bool is_unattended() const { return m_unattended; }

    // Light wallet specific functions
    // fetch unspent outs from lw node and store in m_transfers
    void light_wallet_get_unspent_outs();
    // fetch txs and store in m_payments
    void light_wallet_get_address_txs();
    // get_address_info
    bool light_wallet_get_address_info(cryptonote::COMMAND_RPC_GET_ADDRESS_INFO::response &response);
    // Login. new_address is true if address hasn't been used on lw node before.
    bool light_wallet_login(bool &new_address);
    // Send an import request to lw node. returns info about import fee, address and payment_id
    bool light_wallet_import_wallet_request(cryptonote::COMMAND_RPC_IMPORT_WALLET_REQUEST::response &response);
    // get random outputs from light wallet server
    void light_wallet_get_outs(std::vector<std::vector<get_outs_entry>> &outs, const std::vector<size_t> &selected_transfers, size_t fake_outputs_count);
    // Parse rct string
    bool light_wallet_parse_rct_str(const std::string& rct_string, const crypto::public_key& tx_pub_key, uint64_t internal_output_index, rct::key& decrypted_mask, rct::key& rct_commit, bool decrypt) const;
    // check if key image is ours
    bool light_wallet_key_image_is_ours(const crypto::key_image& key_image, const crypto::public_key& tx_public_key, uint64_t out_index);

    /*
     * "attributes" are a mechanism to store an arbitrary number of string values
     * on the level of the wallet as a whole, identified by keys. Their introduction,
     * technically the unordered map m_attributes stored as part of a wallet file,
     * led to a new wallet file version, but now new singular pieces of info may be added
     * without the need for a new version.
     *
     * The first and so far only value stored as such an attribute is the description.
     * It's stored under the standard key ATTRIBUTE_DESCRIPTION (see method set_description).
     *
     * The mechanism is open to all clients and allows them to use it for storing basically any
     * single string values in a wallet. To avoid the problem that different clients possibly
     * overwrite or misunderstand each other's attributes, a two-part key scheme is
     * proposed: <client name>.<value name>
     */
    const char* const ATTRIBUTE_DESCRIPTION = "wallet2.description";
    void set_attribute(const std::string &key, const std::string &value);
    std::string get_attribute(const std::string &key) const;

    crypto::public_key get_multisig_signer_public_key(const crypto::secret_key &spend_skey) const;
    crypto::public_key get_multisig_signer_public_key() const;
    crypto::public_key get_multisig_signing_public_key(size_t idx) const;
    crypto::public_key get_multisig_signing_public_key(const crypto::secret_key &skey) const;

    template<class t_request, class t_response>
    inline bool invoke_http_json(const boost::string_ref uri, const t_request& req, t_response& res, std::chrono::milliseconds timeout = std::chrono::seconds(15), const boost::string_ref http_method = "GET")
    {
      boost::lock_guard<boost::mutex> lock(m_daemon_rpc_mutex);
      return epee::net_utils::invoke_http_json(uri, req, res, *m_http_client, timeout, http_method);
    }
    template<class t_request, class t_response>
    inline bool invoke_http_bin(const boost::string_ref uri, const t_request& req, t_response& res, std::chrono::milliseconds timeout = std::chrono::seconds(15), const boost::string_ref http_method = "GET")
    {
      boost::lock_guard<boost::mutex> lock(m_daemon_rpc_mutex);
      return epee::net_utils::invoke_http_bin(uri, req, res, *m_http_client, timeout, http_method);
    }
    template<class t_request, class t_response>
    inline bool invoke_http_json_rpc(const boost::string_ref uri, const std::string& method_name, const t_request& req, t_response& res, std::chrono::milliseconds timeout = std::chrono::seconds(15), const boost::string_ref http_method = "GET", const std::string& req_id = "0")
    {
      boost::lock_guard<boost::mutex> lock(m_daemon_rpc_mutex);
      return epee::net_utils::invoke_http_json_rpc(uri, method_name, req, res, *m_http_client, timeout, http_method, req_id);
    }

    bool set_ring_database(const std::string &filename);
    const std::string get_ring_database() const { return m_ring_database; }
    bool get_ring(const crypto::key_image &key_image, std::vector<uint64_t> &outs);
    bool get_rings(const crypto::hash &txid, std::vector<std::pair<crypto::key_image, std::vector<uint64_t>>> &outs);
    bool set_ring(const crypto::key_image &key_image, const std::vector<uint64_t> &outs, bool relative);
    bool find_and_save_rings(bool force = true);

    bool blackball_output(const std::pair<uint64_t, uint64_t> &output);
    bool set_blackballed_outputs(const std::vector<std::pair<uint64_t, uint64_t>> &outputs, bool add = false);
    bool unblackball_output(const std::pair<uint64_t, uint64_t> &output);
    bool is_output_blackballed(const std::pair<uint64_t, uint64_t> &output) const;

    bool lock_keys_file();
    bool unlock_keys_file();
    bool is_keys_file_locked() const;

    void change_password(const std::string &filename, const epee::wipeable_string &original_password, const epee::wipeable_string &new_password);

    void set_tx_notify(const std::shared_ptr<tools::Notify> &notify) { m_tx_notify = notify; }

    std::shared_ptr<epee::net_utils::http::http_simple_client> get_http_client();

    void lockTransport();
    void unlockTransport();

    void get_pos_transfers(transfer_details_v &pos_transfers, uint64_t start_height);

  private:
    /*!
     * \brief  Stores wallet information to wallet file.
     * \param  keys_file_name Name of wallet file
     * \param  password       Password of wallet file
     * \param  watch_only     true to save only view key, false to save both spend and view keys
     * \return                Whether it was successful.
     */
    bool store_keys(const std::string& keys_file_name, const epee::wipeable_string& password, bool watch_only = false);
    /*!
     * \brief Load wallet information from wallet file.
     * \param keys_file_name Name of wallet file
     * \param password       Password of wallet file
     */
    bool load_keys(const std::string& keys_file_name, const epee::wipeable_string& password);
    void process_new_transaction(const crypto::hash &txid, const cryptonote::transaction& tx, const std::vector<uint64_t> &o_indices, uint64_t height, uint64_t ts, bool miner_tx, bool pool, bool double_spend_seen, const tx_cache_data &tx_cache_data);
    void process_new_blockchain_entry(const cryptonote::block& b, const cryptonote::block_complete_entry& bche, const parsed_block &parsed_block, const crypto::hash& bl_id, uint64_t height, const std::vector<tx_cache_data> &tx_cache_data, size_t tx_cache_data_offset);
    void detach_blockchain(uint64_t height);
    void get_short_chain_history(std::list<crypto::hash>& ids, uint64_t granularity = 1) const;
    bool is_tx_spendtime_unlocked(uint64_t unlock_time, uint64_t block_height) const;
    bool clear();
    void pull_blocks(uint64_t start_height, uint64_t& blocks_start_height, const std::list<crypto::hash> &short_chain_history, std::vector<cryptonote::block_complete_entry> &blocks, std::vector<cryptonote::COMMAND_RPC_GET_BLOCKS_FAST::block_output_indices> &o_indices);
    void pull_hashes(uint64_t start_height, uint64_t& blocks_start_height, const std::list<crypto::hash> &short_chain_history, std::vector<crypto::hash> &hashes);
    void fast_refresh(uint64_t stop_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, bool force = false);
    void pull_and_parse_next_blocks(uint64_t start_height, uint64_t &blocks_start_height, std::list<crypto::hash> &short_chain_history, const std::vector<cryptonote::block_complete_entry> &prev_blocks, const std::vector<parsed_block> &prev_parsed_blocks, std::vector<cryptonote::block_complete_entry> &blocks, std::vector<parsed_block> &parsed_blocks, bool &error);
    void process_parsed_blocks(uint64_t start_height, const std::vector<cryptonote::block_complete_entry> &blocks, const std::vector<parsed_block> &parsed_blocks, uint64_t& blocks_added);
    uint64_t select_transfers(uint64_t needed_money, std::vector<size_t> unused_transfers_indices, std::vector<size_t>& selected_transfers) const;
    bool prepare_file_names(const std::string& file_path);
    void process_unconfirmed(const crypto::hash &txid, const cryptonote::transaction& tx, uint64_t height);
    void process_outgoing(const crypto::hash &txid,
                          const cryptonote::transaction &tx,
                          uint64_t                       height,
                          uint64_t                       ts,
                          const cryptonote::TokenAmount &spending,
                          cryptonote::Amount             received,
                          uint32_t                       subaddr_account,
                          const std::set<uint32_t>      &subaddr_indices);
    void add_unconfirmed_tx(const cryptonote::transaction& tx,
                            const cryptonote::TokenAmounts &amounts_in,
                            const std::vector<cryptonote::tx_destination_entry> &dests,
                            const crypto::hash &payment_id,
                            const std::unordered_map<cryptonote::TokenId, cryptonote::tx_destination_entry> &change,
                            uint32_t subaddr_account,
                            const std::set<uint32_t>& subaddr_indices);
    void generate_genesis(cryptonote::block& b) const;
    void check_genesis(const crypto::hash& genesis_hash) const; //throws
    bool generate_chacha_key_from_secret_keys(crypto::chacha_key &key) const;
    void generate_chacha_key_from_password(const epee::wipeable_string &pass, crypto::chacha_key &key) const;
    crypto::hash get_payment_id(const pending_tx &ptx) const;
    void check_acc_out_precomp(const cryptonote::tx_out &o, const crypto::key_derivation &derivation, const std::vector<crypto::key_derivation> &additional_derivations, size_t i, tx_scan_info_t &tx_scan_info) const;
    void check_acc_out_precomp(const cryptonote::tx_out &o, const crypto::key_derivation &derivation, const std::vector<crypto::key_derivation> &additional_derivations, size_t i, const is_out_data *is_out_data, tx_scan_info_t &tx_scan_info) const;
    void check_acc_out_precomp_once(const cryptonote::tx_out &o, const crypto::key_derivation &derivation, const std::vector<crypto::key_derivation> &additional_derivations, size_t i, const is_out_data *is_out_data, tx_scan_info_t &tx_scan_info, bool &already_seen) const;
    void parse_block_round(const cryptonote::blobdata &blob, cryptonote::block &bl, crypto::hash &bl_id, bool &error) const;
    uint64_t get_upper_transaction_weight_limit() const;
    std::vector<uint64_t> get_unspent_amounts_vector() const;
    uint64_t get_dynamic_base_fee_estimate() const;
    float get_output_relatedness(const transfer_details &td0, const transfer_details &td1) const;
    std::vector<size_t> pick_preferred_rct_inputs(uint64_t needed_money, uint32_t subaddr_account, const std::set<uint32_t> &subaddr_indices) const;
    void set_spent(size_t idx, uint64_t height);
    void set_unspent(size_t idx);
    void get_outs(cryptonote::TokenId token_id, std::vector<std::vector<get_outs_entry>> &outs, const std::vector<size_t> &selected_transfers, size_t fake_outputs_count, size_t max_height);
    bool tx_add_fake_output(std::vector<std::vector<tools::wallet2::get_outs_entry>> &outs, uint64_t global_index, const crypto::public_key& tx_public_key, const rct::key& mask, uint64_t real_index, bool unlocked) const;
    crypto::public_key get_tx_pub_key_from_received_outs(const transfer_details &td) const;
    bool should_pick_a_second_output(bool use_rct, size_t n_transfers, const std::vector<size_t> &unused_transfers_indices, const std::vector<size_t> &unused_dust_indices) const;
    std::vector<size_t> get_only_rct(const std::vector<size_t> &unused_dust_indices, const std::vector<size_t> &unused_transfers_indices) const;
    void scan_output(const cryptonote::transaction &tx,
                     bool miner_tx,
                     const crypto::public_key &tx_pub_key,
                     size_t i,
                     tx_scan_info_t &tx_scan_info,
                     int &num_vouts_received,
                     std::unordered_map<cryptonote::TokenId, std::unordered_map<cryptonote::subaddress_index, rct::xmr_amount> > &tx_money_got_in_outs,
                     std::vector<size_t> &outs);
    void trim_hashchain();
    crypto::key_image get_multisig_composite_key_image(size_t n) const;
    rct::multisig_kLRki get_multisig_composite_kLRki(size_t n, const crypto::public_key &ignore, std::unordered_set<rct::key> &used_L, std::unordered_set<rct::key> &new_used_L) const;
    rct::multisig_kLRki get_multisig_kLRki(size_t n, const rct::key &k) const;
    rct::key get_multisig_k(size_t idx, const std::unordered_set<rct::key> &used_L) const;
    void update_multisig_rescan_info(const std::vector<std::vector<rct::key>> &multisig_k, const std::vector<std::vector<multisig_info>> &info, size_t n);
    bool add_rings(const crypto::chacha_key &key, const cryptonote::transaction_prefix &tx);
    bool add_rings(const cryptonote::transaction_prefix &tx);
    bool remove_rings(const cryptonote::transaction_prefix &tx);
    bool get_ring(const crypto::chacha_key &key, const crypto::key_image &key_image, std::vector<uint64_t> &outs);
    crypto::chacha_key get_ringdb_key();
    void setup_keys(const epee::wipeable_string &password);

    bool get_rct_distribution(const cryptonote::TokenId &token_id,
                              uint64_t                  &start_height,
                              std::vector<uint64_t>     &distribution,
                              uint64_t                   max_height);

    uint64_t get_segregation_fork_height() const;
    void unpack_multisig_info(const std::vector<std::string>& info,
      std::vector<crypto::public_key> &public_keys,
      std::vector<crypto::secret_key> &secret_keys) const;
    bool unpack_extra_multisig_info(const std::vector<std::string>& info,
      std::vector<crypto::public_key> &signers,
      std::unordered_set<crypto::public_key> &pkeys) const;

    void cache_tx_data(const cryptonote::transaction& tx, const crypto::hash &txid, tx_cache_data &tx_cache_data) const;

    void setup_new_blockchain();
    void create_keys_file(const std::string &wallet_, bool watch_only, const epee::wipeable_string &password, bool create_address_file);

    cryptonote::account_base m_account;
    boost::optional<epee::net_utils::http::login> m_daemon_login;
    std::string m_daemon_address;
    std::string m_wallet_file;
    std::string m_keys_file;
    std::shared_ptr<epee::net_utils::http::http_simple_client> m_http_client;
    hashchain m_blockchain;
    std::unordered_map<crypto::hash, unconfirmed_transfer_details> m_unconfirmed_txs;
    std::unordered_map<crypto::hash, confirmed_transfer_details> m_confirmed_txs;
    std::unordered_multimap<crypto::hash, pool_payment_details> m_unconfirmed_payments;
    std::unordered_map<crypto::hash, crypto::secret_key> m_tx_keys;
    cryptonote::checkpoints m_checkpoints;
    std::unordered_map<crypto::hash, std::vector<crypto::secret_key>> m_additional_tx_keys;

    transfer_details_v m_transfers;
    payment_container m_payments;
    std::unordered_map<crypto::key_image, size_t> m_key_images;
    std::unordered_map<crypto::public_key, size_t> m_pub_keys;
    cryptonote::account_public_address m_account_public_address;
    std::unordered_map<crypto::public_key, cryptonote::subaddress_index> m_subaddresses;
    std::vector<std::vector<std::string>> m_subaddress_labels;
    std::unordered_map<crypto::hash, std::string> m_tx_notes;
    std::unordered_map<std::string, std::string> m_attributes;
    std::vector<tools::wallet2::address_book_row> m_address_book;
    std::pair<std::map<std::string, std::string>, std::vector<std::string>> m_account_tags;
    uint64_t m_upper_transaction_weight_limit; //TODO: auto-calc this value or request from daemon, now use some fixed value
    const std::vector<std::vector<multisig_info>> *m_multisig_rescan_info;
    const std::vector<std::vector<rct::key>> *m_multisig_rescan_k;

    std::atomic<bool> m_run;

    boost::mutex m_daemon_rpc_mutex;

    bool m_trusted_daemon;
    i_wallet2_callback* m_callback;
    hw::device::device_type m_key_device_type;
    cryptonote::network_type m_nettype;
    uint64_t m_kdf_rounds;
    std::string seed_language; /*!< Language of the mnemonics (seed). */
    bool is_old_file_format; /*!< Whether the wallet file is of an old file format */
    bool m_watch_only; /*!< no spend key */
    bool m_multisig; /*!< if > 1 spend secret key will not match spend public key */
    uint32_t m_multisig_threshold;
    std::vector<crypto::public_key> m_multisig_signers;
    //in case of general M/N multisig wallet we should perform N - M + 1 key exchange rounds and remember how many rounds are passed.
    uint32_t m_multisig_rounds_passed;
    std::vector<crypto::public_key> m_multisig_derivations;
    bool m_always_confirm_transfers;
    bool m_print_ring_members;
    bool m_store_tx_info; /*!< request txkey to be returned in RPC, and store in the wallet cache file */
    uint32_t m_default_mixin;
    uint32_t m_default_priority;
    RefreshType m_refresh_type;
    bool m_auto_refresh;
    bool m_first_refresh_done;
    uint64_t m_refresh_from_block_height;
    // If m_refresh_from_block_height is explicitly set to zero we need this to differentiate it from the case that
    // m_refresh_from_block_height was defaulted to zero.*/
    bool m_explicit_refresh_from_block_height;
    bool m_confirm_missing_payment_id;
    bool m_confirm_non_default_ring_size;
    AskPasswordType m_ask_password;
    uint32_t m_min_output_count;
    uint64_t m_min_output_value;
    bool m_merge_destinations;
    bool m_confirm_backlog;
    uint32_t m_confirm_backlog_threshold;
    bool m_confirm_export_overwrite;
    bool m_auto_low_priority;
    bool m_segregate_pre_fork_outputs;
    bool m_key_reuse_mitigation2;
    uint64_t m_segregation_height;
    bool m_ignore_fractional_outputs;
    bool m_is_initialized;
    NodeRPCProxy m_node_rpc_proxy;
    std::unordered_set<crypto::hash> m_scanned_pool_txs[2];
    size_t m_subaddress_lookahead_major, m_subaddress_lookahead_minor;
    std::string m_device_name;

    // Light wallet
    bool m_light_wallet; /* sends view key to daemon for scanning */
    uint64_t m_light_wallet_scanned_block_height;
    uint64_t m_light_wallet_blockchain_height;
    uint64_t m_light_wallet_per_kb_fee = FEE_PER_KB;
    bool m_light_wallet_connected;
    uint64_t m_light_wallet_balance;
    uint64_t m_light_wallet_unlocked_balance;
    // Light wallet info needed to populate m_payment requires 2 separate api calls (get_address_txs and get_unspent_outs)
    // We save the info from the first call in m_light_wallet_address_txs for easier lookup.
    std::unordered_map<crypto::hash, address_tx> m_light_wallet_address_txs;
    // store calculated key image for faster lookup
    std::unordered_map<crypto::public_key, std::map<uint64_t, crypto::key_image> > m_key_image_cache;

    std::string m_ring_database;
    bool m_ring_history_saved;
    std::unique_ptr<ringdb> m_ringdb;
    boost::optional<crypto::chacha_key> m_ringdb_key;

    uint64_t m_last_block_reward;
    std::unique_ptr<tools::file_locker> m_keys_file_locker;

    crypto::chacha_key m_cache_key;
    boost::optional<epee::wipeable_string> m_encrypt_keys_after_refresh;

    bool m_unattended;

    std::shared_ptr<tools::Notify> m_tx_notify;
  };

}  // namespace tools

BOOST_CLASS_VERSION(tools::wallet2, 25)
BOOST_CLASS_VERSION(tools::multisig_info::LR, 0)
BOOST_CLASS_VERSION(tools::wallet2::address_book_row, 17)
BOOST_CLASS_VERSION(tools::wallet2::reserve_proof_entry, 0)
BOOST_CLASS_VERSION(tools::wallet2::unsigned_tx_set, 0)
BOOST_CLASS_VERSION(tools::wallet2::signed_tx_set, 0)

namespace boost {
namespace serialization {

template <typename Archive>
inline
void serialize(Archive& a, tools::wallet2::address_book_row& x, const boost::serialization::version_type ver)
{
  a & x.m_address;
  a & x.m_payment_id;
  a & x.m_description;
  if (ver < 17)
  {
    x.m_is_subaddress = false;
    return;
  }
  a & x.m_is_subaddress;
}

template <typename Archive>
inline
void serialize(Archive& a, tools::wallet2::reserve_proof_entry& x, const boost::serialization::version_type /*ver*/)
{
  a & x.txid;
  a & x.index_in_tx;
  a & x.shared_secret;
  a & x.key_image;
  a & x.shared_secret_sig;
  a & x.key_image_sig;
}

template <typename Archive>
inline
void serialize(Archive &a, tools::wallet2::unsigned_tx_set &x, const boost::serialization::version_type /*ver*/)
{
  a & x.txes;
  a & x.transfers;
}

template <typename Archive>
inline
void serialize(Archive &a, tools::wallet2::signed_tx_set &x, const boost::serialization::version_type /*ver*/)
{
  a & x.ptx;
  a & x.key_images;
}

}  // namespace serialization
}  // namespace boost

namespace tools {
namespace detail {

inline void digit_split_strategy(const std::vector<cryptonote::tx_destination_entry>& dsts,
  const cryptonote::tx_destination_entry& change_dst, uint64_t dust_threshold,
  std::vector<cryptonote::tx_destination_entry>& splitted_dsts, std::vector<cryptonote::tx_destination_entry> &dust_dsts)
{
  splitted_dsts.clear();
  dust_dsts.clear();

  for(auto& de: dsts)
  {
    cryptonote::decompose_amount_into_digits(de.amount, 0,
      [&](uint64_t chunk) { splitted_dsts.emplace_back(de.token_id, chunk, de.addr, de.is_subaddress); },
      [&](uint64_t a_dust) { splitted_dsts.emplace_back(de.token_id, a_dust, de.addr, de.is_subaddress); } );
  }

  cryptonote::decompose_amount_into_digits(change_dst.amount, 0,
    [&](uint64_t chunk) {
      if (chunk <= dust_threshold)
        dust_dsts.emplace_back(change_dst.token_id, chunk, change_dst.addr, false);
      else
        splitted_dsts.emplace_back(change_dst.token_id, chunk, change_dst.addr, false);
    },
    [&](uint64_t a_dust) { dust_dsts.emplace_back(change_dst.token_id, a_dust, change_dst.addr, false); } );
}
//----------------------------------------------------------------------------------------------------
inline void null_split_strategy(const std::vector<cryptonote::tx_destination_entry>& dsts,
  const cryptonote::tx_destination_entry& change_dst, uint64_t dust_threshold,
  std::vector<cryptonote::tx_destination_entry>& splitted_dsts, std::vector<cryptonote::tx_destination_entry> &dust_dsts)
{
  splitted_dsts = dsts;

  dust_dsts.clear();
  uint64_t change = change_dst.amount;

  if (0 != change)
  {
    splitted_dsts.emplace_back(change_dst.token_id, change, change_dst.addr, false);
  }
}
//----------------------------------------------------------------------------------------------------
inline void print_source_entry(const cryptonote::tx_source_entry& src)
{
  std::string indexes;
  std::for_each(src.outputs.begin(), src.outputs.end(), [&](const cryptonote::tx_source_entry::output_entry& s_e) { indexes += boost::to_string(s_e.first) + " "; });
  LOG_PRINT_L0("amount=" << cryptonote::print_money(src.amount) << ", real_output=" <<src.real_output << ", real_output_in_tx_index=" << src.real_output_in_tx_index << ", indexes: " << indexes);
}

}  // namespace detail
}  // namespace tools
