// Copyright (c) 2009-2010 Satoshi Nakamoto

// Copyright (c) 2009-present The Bitcoin Core developers

// Distributed under the MIT software license, see the accompanying

// file COPYING or http://www.opensource.org/licenses/mit-license.php.

#include <common/messages.h>

#include <common/types.h>

#include <node/types.h>

#include <policy/fees/block_policy_estimator.h>

#include <tinyformat.h>

#include <util/fees.h>

#include <util/strencodings.h>

#include <util/string.h>

#include <util/translation.h>

#include <cassert>

#include <map>

#include <string>

#include <string_view>

#include <utility>

#include <vector>

using node::TransactionError;

using util::Join;

namespace common {

std::string StringForFeeReason(FeeReason reason)

{

    static const std::map<FeeReason, std::string> fee_reason_strings = {

        {FeeReason::NONE, "None"},

        {FeeReason::HALF_ESTIMATE, "Half Target 60% Threshold"},

        {FeeReason::FULL_ESTIMATE, "Target 85% Threshold"},

        {FeeReason::DOUBLE_ESTIMATE, "Double Target 95% Threshold"},

        {FeeReason::CONSERVATIVE, "Conservative Double Target longer horizon"},

        {FeeReason::MEMPOOL_MIN, "Mempool Min Fee"},

        {FeeReason::FALLBACK, "Fallback fee"},

        {FeeReason::REQUIRED, "Minimum Required Fee"},

    };

    auto reason_string = fee_reason_strings.find(reason);

    if (reason_string == fee_reason_strings.end()) return "Unknown";

    return reason_string->second;

}

const std::vector<std::pair<std::string, FeeEstimateMode>>& FeeModeMap()

{

    static const std::vector<std::pair<std::string, FeeEstimateMode>> FEE_MODES = {

        {"unset", FeeEstimateMode::UNSET},

        {"economical", FeeEstimateMode::ECONOMICAL},

        {"conservative", FeeEstimateMode::CONSERVATIVE},

    };

    return FEE_MODES;

}

std::string FeeModeInfo(const std::pair<std::string, FeeEstimateMode>& mode, std::string& default_info)

{

    switch (mode.second) {

        case FeeEstimateMode::UNSET:

            return strprintf("%s means no mode set (%s). \n", mode.first, default_info);

        case FeeEstimateMode::ECONOMICAL:

            return strprintf("%s estimates use a shorter time horizon, making them more\n"

                   "responsive to short-term drops in the prevailing fee market. This mode\n"

                   "potentially returns a lower fee rate estimate.\n", mode.first);

        case FeeEstimateMode::CONSERVATIVE:

            return strprintf("%s estimates use a longer time horizon, making them\n"

                   "less responsive to short-term drops in the prevailing fee market. This mode\n"

                   "potentially returns a higher fee rate estimate.\n", mode.first);

    } // no default case, so the compiler can warn about missing cases

    assert(false);

}

std::string FeeModesDetail(std::string default_info)

{

    std::string info;

    for (const auto& fee_mode : FeeModeMap()) {

        info += FeeModeInfo(fee_mode, default_info);

    }

    return strprintf("%s \n%s", FeeModes(", "), info);

}

std::string FeeModes(const std::string& delimiter)

{

    return Join(FeeModeMap(), delimiter, [&](const std::pair<std::string, FeeEstimateMode>& i) { return i.first; });

}

std::string InvalidEstimateModeErrorMessage()

{

    return "Invalid estimate_mode parameter, must be one of: \"" + FeeModes("\", \"") + "\"";

}

bool FeeModeFromString(std::string_view mode_string, FeeEstimateMode& fee_estimate_mode)

{

    auto searchkey = ToUpper(mode_string);

    for (const auto& pair : FeeModeMap()) {

        if (ToUpper(pair.first) == searchkey) {

            fee_estimate_mode = pair.second;

            return true;

        }

    }

    return false;

}

bilingual_str PSBTErrorString(PSBTError err)

{

    switch (err) {

        case PSBTError::MISSING_INPUTS:

            return Untranslated("Inputs missing or spent");

        case PSBTError::SIGHASH_MISMATCH:

            return Untranslated("Specified sighash value does not match value stored in PSBT");

        case PSBTError::EXTERNAL_SIGNER_NOT_FOUND:

            return Untranslated("External signer not found");

        case PSBTError::EXTERNAL_SIGNER_FAILED:

            return Untranslated("External signer failed to sign");

        case PSBTError::UNSUPPORTED:

            return Untranslated("Signer does not support PSBT");

        case PSBTError::INCOMPLETE:

            return Untranslated("Input needs additional signatures or other data");

        case PSBTError::OK:

            return Untranslated("No errors");

    } // no default case, so the compiler can warn about missing cases

    assert(false);

}

bilingual_str TransactionErrorString(const TransactionError err)

{

    switch (err) {

        case TransactionError::OK:

            return Untranslated("No error");

        case TransactionError::MISSING_INPUTS:

            return Untranslated("Inputs missing or spent");

        case TransactionError::ALREADY_IN_UTXO_SET:

            return Untranslated("Transaction outputs already in utxo set");

        case TransactionError::MEMPOOL_REJECTED:

            return Untranslated("Transaction rejected by mempool");

        case TransactionError::MEMPOOL_ERROR:

            return Untranslated("Mempool internal error");

        case TransactionError::MAX_FEE_EXCEEDED:

            return Untranslated("Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)");

        case TransactionError::MAX_BURN_EXCEEDED:

            return Untranslated("Unspendable output exceeds maximum configured by user (maxburnamount)");

        case TransactionError::INVALID_PACKAGE:

            return Untranslated("Transaction rejected due to invalid package");

    } // no default case, so the compiler can warn about missing cases

    assert(false);

}

bilingual_str ResolveErrMsg(const std::string& optname, const std::string& strBind)

{

    return strprintf(_("Cannot resolve -%s address: '%s'"), optname, strBind);

}

bilingual_str InvalidPortErrMsg(const std::string& optname, const std::string& invalid_value)

{

    return strprintf(_("Invalid port specified in %s: '%s'"), optname, invalid_value);

}

bilingual_str AmountHighWarn(const std::string& optname)

{

    return strprintf(_("%s is set very high!"), optname);

}

bilingual_str AmountErrMsg(const std::string& optname, const std::string& strValue)

{

    return strprintf(_("Invalid amount for -%s=<amount>: '%s'"), optname, strValue);

}

} // namespace common