# This file is part of GNU Taler
# (C) 2020 Taler Systems SA
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 3 of the License, or (at your option) any later
# version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free
# Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
# Boston, MA  02110-1301  USA
#
# @author Florian Dold
# @repository https://git.taler.net/taler-util.git/

from dataclasses import dataclass
import textwrap

@dataclass
class ErrorCode:
    name: str
    code: int
    description: str


class ErrorCodeRegistry:
    def __init__(self):
        self.last_numcode = -1
        self._ec_name_memo = {}
        self._ec_numcode_memo = {}
        self._codes = []

    def _add_ec(self, name, numcode, description):
        if numcode <= self.last_numcode:
            raise Exception(
                f"Error code for {name} must be larger than last error code {self.last_numcode}"
            )
        if self._ec_name_memo.get(name) is not None:
            raise Exception(f"Duplicate error code name {name}")
        self._ec_name_memo[name] = True
        if self._ec_numcode_memo.get(numcode) is not None:
            raise Exception(f"Duplicate error code number {numcode}")
        self._ec_numcode_memo[numcode] = True
        self.last_numcode = numcode
        desc = textwrap.dedent(description).strip()
        self._codes.append(ErrorCode(name, numcode, desc))


ec = ErrorCodeRegistry()

__all__ = ["ec"]

ec._add_ec(
    "NONE",
    0,
    """
    Special code to indicate no error (or no "code" present).
    """,
)

ec._add_ec(
    "INVALID",
    1,
    """
    Special code to indicate that a non-integer error code was returned in the
    JSON response.
    """,
)

ec._add_ec(
    "INVALID_RESPONSE",
    2,
    """
    The response we got from the server was not even in JSON format.
    """,
)

ec._add_ec(
    "NOT_IMPLEMENTED",
    3,
    """
    Generic implementation error: this function was not yet implemented.
    """,
)

ec._add_ec(
    "EXCHANGE_BAD_CONFIGURATION",
    4,
    """
    Exchange is badly configured and thus cannot operate.
    """,
)

ec._add_ec(
    "INTERNAL_INVARIANT_FAILURE",
    5,
    """
    Internal assertion error.
    """,
)

ec._add_ec(
    "TIMEOUT",
    6,
    """
    Operation timed out.
    """,
)

ec._add_ec(
    "JSON_ALLOCATION_FAILURE",
    7,
    """
    Exchange failed to allocate memory for building JSON reply.
    """,
)

ec._add_ec(
    "METHOD_INVALID",
    8,
    """
    HTTP method invalid for this URL.
    """,
)

ec._add_ec(
    "OPERATION_INVALID",
    9,
    """
    Operation specified invalid for this URL (resulting in a "NOT
    FOUND" for the overall response).
    """,
)

ec._add_ec(
    "ENDPOINT_UNKNOWN",
    10,
    """
    There is no endpoint defined for the URL provided by the client
    (returned together with a #MHD_HTTP_NOT_FOUND status code).
    """,
)

ec._add_ec(
    "URI_TOO_LONG",
    11,
    """
     The URI is longer than the longest URI the HTTP server is willing
     to parse. Returned together with an HTTP status code of
     #MHD_HTTP_URI_TOO_LONG.
    """,
)

ec._add_ec(
    "WRONG_NUMBER_OF_SEGMENTS",
    12,
    """
    The number of segments included in the URI does not match the
    number of segments expected by the endpoint. (returned together
    with a #MHD_HTTP_NOT_FOUND status code).
    """,
)


ec._add_ec(
    "DB_SETUP_FAILED",
    1001,
    """
    The exchange failed to even just initialize its connection to the database.

    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DB_START_FAILED",
    1002,
    """
    The exchange encountered an error event to just start the database
    transaction.

    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)


ec._add_ec(
    "DB_COMMIT_FAILED_HARD",
    1003,
    """
    The exchange encountered an error event to commit
    the database transaction (hard, unrecoverable error).
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DB_COMMIT_FAILED_ON_RETRY",
    1004,
    """
    The exchange encountered an error event to commit
    the database transaction, even after repeatedly
    retrying it there was always a conflicting transaction.
    (This indicates a repeated serialization error; should
    only happen if some client maliciously tries to create
    conflicting concurrent transactions.)
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)


ec._add_ec(
    "PARSER_OUT_OF_MEMORY",
    1005,
    """
    The exchange had insufficient memory to parse the request. This
    response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)


ec._add_ec(
    "JSON_INVALID",
    1006,
    """
    The JSON in the client's request to the exchange was malformed.
    (Generic parse error).
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "JSON_INVALID_WITH_DETAILS",
    1007,
    """
    The JSON in the client's request to the exchange was malformed.
    Details about the location of the parse error are provided.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PARAMETER_MISSING",
    1008,
    """
    A required parameter in the request to the exchange was missing.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PARAMETER_MALFORMED",
    1009,
    """
    A parameter in the request to the exchange was malformed.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "COIN_HISTORY_DB_ERROR_INSUFFICIENT_FUNDS",
    1010,
    """
    The exchange failed to obtain the transaction history of the
    given coin from the database while generating an insufficient
    funds errors.  This can happen during /deposit or /recoup requests.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "INTERNAL_LOGIC_ERROR",
    1011,
    """
    Internal logic error.  Some server-side function
    failed that really should not.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PAYTO_WRONG_METHOD",
    1012,
    """
    The method specified in a payto:// URI is not one we expected.
    """,
)

ec._add_ec(
    "PAYTO_MALFORMED",
    1013,
    """
    The payto:// URI is malformed.
    """,
)

ec._add_ec(
    "DB_COIN_HISTORY_STORE_ERROR",
    1014,
    """
    We failed to update the database of known coins.
    """,
)

ec._add_ec(
    "COINS_INVALID_COIN_PUB",
    1050,
    """
    The public key of given to a /coins/ handler was malformed.
    """,
)

ec._add_ec(
    "RESERVES_INVALID_RESERVE_PUB",
    1051,
    """
    The reserve key of given to a /reserves/ handler was malformed.
    """,
)

ec._add_ec(
    "TRANSFERS_INVALID_WTID",
    1052,
    """
    The public key of given to a /transfers/ handler was malformed.
    """,
)

ec._add_ec(
    "DEPOSITS_INVALID_H_WIRE",
    1053,
    """
    The wire hash of given to a /deposits/ handler was malformed.
    """,
)

ec._add_ec(
    "DEPOSITS_INVALID_MERCHANT_PUB",
    1054,
    """
    The merchant key of given to a /deposits/ handler was malformed.
    """,
)

ec._add_ec(
    "DEPOSITS_INVALID_H_CONTRACT_TERMS",
    1055,
    """
    The hash of the contract terms given to a /deposits/ handler was malformed.
    """,
)

ec._add_ec(
    "DEPOSITS_INVALID_COIN_PUB",
    1056,
    """
    The coin public key of given to a /deposits/ handler was malformed.
    """,
)

ec._add_ec(
    "DEPOSITS_INVALID_BODY_BY_EXCHANGE",
    1057,
    """
    The body returned by the exchange for a /deposits/ request was malformed. Error created client-side.
    """,
)

ec._add_ec(
    "DEPOSITS_INVALID_SIGNATURE_BY_EXCHANGE",
    1058,
    """
    The signature returned by the exchange in a /deposits/ request was malformed. Error created client-side.
    """,
)



ec._add_ec(
    "WITHDRAW_INSUFFICIENT_FUNDS",
    1100,
    """
    The given reserve does not have sufficient funds to admit the
    requested withdraw operation at this time.  The response includes
    the current "balance" of the reserve as well as the transaction
    "history" that lead to this balance.  This response is provided
    with HTTP status code #MHD_HTTP_CONFLICT.
    """,
)

ec._add_ec(
    "WITHDRAW_RESERVE_UNKNOWN",
    1101,
    """
    The exchange has no information about the "reserve_pub" that
    was given.
    This response is provided with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "WITHDRAW_AMOUNT_FEE_OVERFLOW",
    1102,
    """
    The amount to withdraw together with the fee exceeds the
    numeric range for Taler amounts.  This is not a client
    failure, as the coin value and fees come from the exchange's
    configuration.
    This response is provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "AMOUNT_DEPOSITS_OVERFLOW",
    1103,
    """
    All of the deposited amounts into this reserve total up to a
    value that is too big for the numeric range for Taler amounts.
    This is not a client failure, as the transaction history comes
    from the exchange's configuration.  This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_HISTORIC_DENOMINATION_KEY_NOT_FOUND",
    1104,
    """
    For one of the historic withdrawals from this reserve, the
    exchange could not find the denomination key.
    This is not a client failure, as the transaction history comes
    from the exchange's configuration.  This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_AMOUNT_WITHDRAWALS_OVERFLOW",
    1105,
    """
    All of the withdrawals from reserve total up to a
    value that is too big for the numeric range for Taler amounts.
    This is not a client failure, as the transaction history comes
    from the exchange's configuration.  This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_RESERVE_WITHOUT_WIRE_TRANSFER",
    1106,
    """
    The exchange somehow knows about this reserve, but there seem to
    have been no wire transfers made.  This is not a client failure,
    as this is a database consistency issue of the exchange.  This
    response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_SIGNATURE_FAILED",
    1107,
    """
    The exchange failed to create the signature using the
    denomination key.  This response is provided with HTTP status
    code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_DB_STORE_ERROR",
    1108,
    """
    The exchange failed to store the withdraw operation in its
    database.  This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_DB_FETCH_ERROR",
    1109,
    """
    The exchange failed to check against historic withdraw data from
    database (as part of ensuring the idempotency of the operation).
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_DENOMINATION_KEY_NOT_FOUND",
    1110,
    """
    The exchange is not aware of the denomination key
    the wallet requested for the withdrawal.
    This response is provided
    with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "WITHDRAW_RESERVE_SIGNATURE_INVALID",
    1111,
    """
    The signature of the reserve is not valid.  This response is
    provided with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "WITHDRAW_HISTORY_DB_ERROR_INSUFFICIENT_FUNDS",
    1112,
    """
    When computing the reserve history, we ended up with a negative
    overall balance, which should be impossible.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_RESERVE_HISTORY_IMPOSSIBLE",
    1113,
    """
    When computing the reserve history, we ended up with a negative
    overall balance, which should be impossible.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_VALIDITY_IN_FUTURE",
    1114,
    """
    Validity period of the coin to be withdrawn
    is in the future.  Returned with an HTTP
    status of #MHD_HTTP_PRECONDITION_FAILED.
    """,
)

ec._add_ec(
    "WITHDRAW_VALIDITY_IN_PAST",
    1115,
    """
    Withdraw period of the coin to be withdrawn
    is in the past.  Returned with an HTTP
    status of #MHD_HTTP_GONE.
    """,
)

ec._add_ec(
    "DENOMINATION_KEY_LOST",
    1116,
    """
    Withdraw period of the coin to be withdrawn
    is in the past.  Returned with an HTTP
    status of #MHD_HTTP_GONE.
    """,
)

ec._add_ec(
    "WITHDRAW_RESERVE_BALANCE_CORRUPT",
    1117,
    """
    The exchange's database entry with the reserve balance summary
    is inconsistent with its own history of the reserve.
    Returned with an HTTP status of #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "WITHDRAW_REPLY_MALFORMED",
    1118,
    """
    The exchange responded with a reply that did not satsify the protocol.
    This error is not used in the protocol but created client-side.
    """,
)


ec._add_ec(
    "RESERVE_STATUS_DB_ERROR",
    1150,
    """
    The exchange failed to obtain the transaction history of the
    given reserve from the database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "RESERVE_STATUS_UNKNOWN",
    1151,
    """
    The reserve status was requested using a unknown key,
    to be returned with 404 Not Found.
    """,
)

ec._add_ec(
    "RESERVE_STATUS_REPLY_MALFORMED",
    1152,
    """
    The exchange responded with a reply that did not satsify the protocol.
    This error is not used in the protocol but created client-side.
    """,
)

ec._add_ec(
    "DEPOSIT_INSUFFICIENT_FUNDS",
    1200,
    """
    The respective coin did not have sufficient residual value
    for the /deposit operation (i.e. due to double spending).
    The "history" in the respose provides the transaction history
    of the coin proving this fact.  This response is provided
    with HTTP status code #MHD_HTTP_CONFLICT.
    """,
)

ec._add_ec(
    "DEPOSIT_HISTORY_DB_ERROR",
    1201,
    """
    The exchange failed to obtain the transaction history of the
    given coin from the database (this does not happen merely because
    the coin is seen by the exchange for the first time).
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DEPOSIT_STORE_DB_ERROR",
    1202,
    """
    The exchange failed to store the /depost information in the
    database.  This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DEPOSIT_DB_DENOMINATION_KEY_UNKNOWN",
    1203,
    """
    The exchange database is unaware of the denomination key that
    signed the coin (however, the exchange process is; this is not
    supposed to happen; it can happen if someone decides to purge the
    DB behind the back of the exchange process).  Hence the deposit
    is being refused.  This response is provided with HTTP status
    code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DEPOSIT_DENOMINATION_KEY_UNKNOWN",
    1204,
    """
    The exchange was trying to lookup the denomination key for
    the purpose of a DEPOSIT operation. However, the denomination
    key is unavailable for that purpose. This can be because
    it is entirely unknown to the exchange or not in the validity
    period for the deposit operation.  Hence the deposit
    is being refused.  This response is provided with HTTP status
    code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "DEPOSIT_COIN_SIGNATURE_INVALID",
    1205,
    """
    The signature made by the coin over the deposit permission is not
    valid.  This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "DEPOSIT_DENOMINATION_SIGNATURE_INVALID",
    1206,
    """
    The signature of the denomination key over the coin is not valid.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "DEPOSIT_NEGATIVE_VALUE_AFTER_FEE",
    1207,
    """
    The stated value of the coin after the deposit fee is subtracted
    would be negative.  This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "DEPOSIT_REFUND_DEADLINE_AFTER_WIRE_DEADLINE",
    1208,
    """
    The stated refund deadline is after the wire deadline.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "DEPOSIT_INVALID_WIRE_FORMAT_TYPE",
    1209,
    """
    The exchange does not recognize the validity of or support the
    given wire format type.
    This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "DEPOSIT_INVALID_WIRE_FORMAT_JSON",
    1210,
    """
    The exchange failed to canonicalize and hash the given wire format.
    For example, the merchant failed to provide the "salt" or
    a valid payto:// URI in the wire details.  Note that while the
    exchange will do some basic sanity checking on the wire details,
    it cannot warrant that the banking system will ultimately be able
    to route to the specified address, even if this check passed.
    This response is provided with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "DEPOSIT_INVALID_WIRE_FORMAT_CONTRACT_HASH_CONFLICT",
    1211,
    """
    The hash of the given wire address does not match the hash
    specified in the proposal data.  This response is provided with
    HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "DEPOSIT_INVALID_WIRE_FORMAT_ACCOUNT_NUMBER",
    1213,
    """
    The exchange detected that the given account number is invalid for
    the selected wire format type.  This response is provided with HTTP
    status code #MHD_HTTP_BAD_REQUEST.
    """,
)


ec._add_ec(
    "DEPOSIT_INVALID_TIMESTAMP",
    1218,
    """
    Timestamp included in deposit permission is intolerably far off
    with respect to the clock of the exchange.
    """,
)

ec._add_ec(
    "DEPOSIT_DENOMINATION_VALIDITY_IN_FUTURE",
    1219,
    """
    Validity period of the denomination key
    is in the future.  Returned with an HTTP
    status of #MHD_HTTP_PRECONDITION_FAILED.
    """,
)

ec._add_ec(
    "DEPOSIT_DENOMINATION_EXPIRED",
    1220,
    """
    Denomination key of the coin is past the
    deposit deadline.  Returned with an HTTP
    status of #MHD_HTTP_GONE.
    """,
)

ec._add_ec(
    "DEPOSIT_INVALID_SIGNATURE_BY_EXCHANGE",
    1221,
    """
    The signature provided by the exchange is not
    valid. Error created client-side.
    """,
)

ec._add_ec(
    "DEPOSIT_CURRENCY_MISSMATCH",
    1222,
    """
    The currency specified for the deposit is different from
    the currency of the coin.  This response is provided with HTTP
    status code #MHD_HTTP_PRECONDITION_FAILED.
    """,
)


ec._add_ec(
    "MELT_INSUFFICIENT_FUNDS",
    1300,
    """
    The respective coin did not have sufficient residual value
    for the /refresh/melt operation.  The "history" in this
    response provdes the "residual_value" of the coin, which may
    be less than its "original_value".  This response is provided
    with HTTP status code #MHD_HTTP_CONFLICT.
    """,
)

ec._add_ec(
    "MELT_DENOMINATION_KEY_NOT_FOUND",
    1301,
    """
    The respective coin did not have sufficient residual value
    for the /refresh/melt operation.  The "history" in this
    response provdes the "residual_value" of the coin, which may
    be less than its "original_value".  This response is provided
    with HTTP status code #MHD_HTTP_CONFLICT.
    """,
)

ec._add_ec(
    "MELT_COIN_HISTORY_COMPUTATION_FAILED",
    1302,
    """
    The exchange had an internal error reconstructing the
    transaction history of the coin that was being melted.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "MELT_DB_FETCH_ERROR",
    1303,
    """
    The exchange failed to check against historic melt data from
    database (as part of ensuring the idempotency of the operation).
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "MELT_DB_STORE_SESSION_ERROR",
    1304,
    """
    The exchange failed to store session data in the
    database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "MELT_FEES_EXCEED_CONTRIBUTION",
    1305,
    """
    The exchange encountered melt fees exceeding the melted
    coin's contribution.  This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "MELT_DENOMINATION_SIGNATURE_INVALID",
    1306,
    """
    The denomination key signature on the melted coin is invalid.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "MELT_COIN_SIGNATURE_INVALID",
    1307,
    """
    The signature made with the coin to be melted is invalid.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "MELT_HISTORY_DB_ERROR_INSUFFICIENT_FUNDS",
    1308,
    """
    The exchange failed to obtain the transaction history of the
    given coin from the database while generating an insufficient
    funds errors.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "MELT_COIN_EXPIRED_NO_ZOMBIE",
    1309,
    """
    The denomination of the given coin has past its expiration date and
    it is also not a valid zombie (that is, was not refreshed with the
    fresh coin being subjected to recoup).
    """,
)

ec._add_ec(
    "MELT_INVALID_SIGNATURE_BY_EXCHANGE",
    1310,
    """
    The signature returned by the exchange in a melt request was malformed. Error created client-side.
    """,
)

ec._add_ec(
    "MELT_CURRENCY_MISSMATCH",
    1311,
    """
    The currency specified for the melt amount is different from
    the currency of the coin.  This response is provided with HTTP
    status code #MHD_HTTP_PRECONDITION_FAILED.
    """,
)

ec._add_ec(
    "REFRESH_RECOUP_DENOMINATION_KEY_NOT_FOUND",
    1351,
    """
    The exchange is unaware of the denomination key that was
    used to sign the melted zombie coin.  This response is provided
    with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "REFRESH_RECOUP_DENOMINATION_VALIDITY_IN_FUTURE",
    1352,
    """
    Validity period of the denomination key
    is in the future.  Returned with an HTTP
    status of #MHD_HTTP_PRECONDITION_FAILED.
    """,
)

ec._add_ec(
    "REFRESH_RECOUP_DENOMINATION_EXPIRED",
    1353,
    """
    Denomination key of the coin is past the
    deposit deadline.  Returned with an HTTP
    status of #MHD_HTTP_GONE.
    """,
)

ec._add_ec(
    "REFRESH_ZOMBIE_DENOMINATION_EXPIRED",
    1354,
    """
    Denomination key of the coin is past the
    deposit deadline.  Returned with an HTTP
    status of #MHD_HTTP_GONE.
    """,
)

ec._add_ec(
    "REVEAL_COMMITMENT_VIOLATION",
    1370,
    """
    The provided transfer keys do not match up with the
    original commitment.  Information about the original
    commitment is included in the response.  This response is
    provided with HTTP status code #MHD_HTTP_CONFLICT.
    """,
)

ec._add_ec(
    "REVEAL_SIGNING_ERROR",
    1371,
    """
    Failed to produce the blinded signatures over the coins
    to be returned.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REVEAL_SESSION_UNKNOWN",
    1372,
    """
    The exchange is unaware of the refresh session specified in
    the request.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REVEAL_DB_FETCH_SESSION_ERROR",
    1373,
    """
    The exchange failed to retrieve valid session data from the
    database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REVEAL_DB_FETCH_REVEAL_ERROR",
    1374,
    """
    The exchange failed to retrieve previously revealed data from the
    database.  This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REVEAL_DB_COMMIT_ERROR",
    1375,
    """
    The exchange failed to retrieve commitment data from the
    database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REVEAL_CNC_TRANSFER_ARRAY_SIZE_INVALID",
    1376,
    """
    The size of the cut-and-choose dimension of the
    private transfer keys request does not match #TALER_CNC_KAPPA - 1.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REVEAL_NEW_DENOMS_ARRAY_SIZE_EXCESSIVE",
    1377,
    """
    The number of coins to be created in refresh exceeds the limits
    of the exchange.
    private transfer keys request does not match #TALER_CNC_KAPPA - 1.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REVEAL_NEW_DENOMS_ARRAY_SIZE_MISSMATCH",
    1378,
    """
    The number of envelopes given does not match the number
    of denomination keys given.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REVEAL_COST_CALCULATION_OVERFLOW",
    1379,
    """
    The exchange encountered a numeric overflow totaling up
    the cost for the refresh operation.  This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REVEAL_AMOUNT_INSUFFICIENT",
    1380,
    """
    The exchange's cost calculation shows that the melt amount
    is below the costs of the transaction.  This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REVEAL_FRESH_DENOMINATION_KEY_NOT_FOUND",
    1381,
    """
    The exchange is unaware of the denomination key that was
    requested for one of the fresh coins.  This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)


ec._add_ec(
    "REVEAL_LINK_SIGNATURE_INVALID",
    1382,
    """
    The signature made with the coin over the link data is invalid.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REVEAL_KEYS_MISSING",
    1383,
    """
    The exchange failed to generate the signature as
    it could not find the signing key for the denomination.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REVEAL_INVALID_RCH",
    1384,
    """
    The refresh session hash given to a /refreshes/ handler was malformed.
    """,
)

ec._add_ec(
    "REVEAL_REPLY_MALFORMED",
    1385,
    """
    The exchange responded with a reply that did not satsify the protocol.
    This error is not used in the protocol but created client-side.
    """,
)


ec._add_ec(
    "LINK_COIN_UNKNOWN",
    1400,
    """
    The coin specified in the link request is unknown to the exchange.
    This response is provided with HTTP status code
    #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "LINK_REPLY_MALFORMED",
    1401,
    """
    The exchange responded with a reply that did not satsify the protocol.
    This error is not used in the protocol but created client-side.
    """,
)

ec._add_ec(
    "REFUND_COIN_NOT_FOUND",
    1500,
    """
    The exchange knows literally nothing about the coin we were asked
    to refund. But without a transaction history, we cannot issue a
    refund.  This is kind-of OK, the owner should just refresh it
    directly without executing the refund.  This response is provided
    with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "REFUND_CONFLICT",
    1501,
    """
    We could not process the refund request as the coin's transaction
    history does not permit the requested refund at this time.  The
    "history" in the response proves this.  This response is provided
    with HTTP status code #MHD_HTTP_CONFLICT.
    """,
)

ec._add_ec(
    "REFUND_DEPOSIT_NOT_FOUND",
    1503,
    """
    The exchange knows about the coin we were asked to refund, but
    not about the specific /deposit operation.  Hence, we cannot
    issue a refund (as we do not know if this merchant public key is
    authorized to do a refund).  This response is provided with HTTP
    status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "REFUND_CURRENCY_MISSMATCH",
    1504,
    """
    The currency specified for the refund is different from
    the currency of the coin.  This response is provided with HTTP
    status code #MHD_HTTP_PRECONDITION_FAILED.
    """,
)

ec._add_ec(
    "REFUND_DB_INCONSISTENT",
    1505,
    """
    When we tried to check if we already paid out the coin, the
    exchange's database suddenly disagreed with data it previously
    provided (internal inconsistency).
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REFUND_MERCHANT_ALREADY_PAID",
    1506,
    """
    The exchange can no longer refund the customer/coin as the
    money was already transferred (paid out) to the merchant.
    (It should be past the refund deadline.)
    This response is provided with HTTP status code
    #MHD_HTTP_GONE.
    """,
)

ec._add_ec(
    "REFUND_INSUFFICIENT_FUNDS",
    1507,
    """
    The amount the exchange was asked to refund exceeds
    (with fees) the total amount of the deposit (including fees).
    This response is provided with HTTP status code
    #MHD_HTTP_PRECONDITION_FAILED.
    """,
)

ec._add_ec(
    "REFUND_DENOMINATION_KEY_NOT_FOUND",
    1508,
    """
    The exchange failed to recover information about the
    denomination key of the refunded coin (even though it
    recognizes the key).  Hence it could not check the fee
    strucutre.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REFUND_FEE_TOO_LOW",
    1509,
    """
    The refund fee specified for the request is lower than
    the refund fee charged by the exchange for the given
    denomination key of the refunded coin.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REFUND_STORE_DB_ERROR",
    1510,
    """
    The exchange failed to store the refund information to
    its database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REFUND_FEE_CURRENCY_MISSMATCH",
    1511,
    """
    The refund fee is specified in a different currency
    than the refund amount.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REFUND_FEE_ABOVE_AMOUNT",
    1512,
    """
    The refunded amount is smaller than the refund fee,
    which would result in a negative refund.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REFUND_MERCHANT_SIGNATURE_INVALID",
    1513,
    """
    The signature of the merchant is invalid.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "REFUND_MERCHANT_SIGNING_FAILED",
    1514,
    """
    Merchant backend failed to create the refund confirmation signature.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "REFUND_INVALID_SIGNATURE_BY_EXCHANGE",
    1515,
    """
    The signature returned by the exchange in a refund request was malformed. Error created client-side.
    """,
)


ec._add_ec(
    "ADMIN_ADD_INCOMING_WIREFORMAT_UNSUPPORTED",
    1600,
    """
    The wire format specified in the "sender_account_details"
    is not understood or not supported by this exchange.
    Returned with an HTTP status code of #MHD_HTTP_NOT_FOUND.
    (As we did not find an interpretation of the wire format.)
    """,
)

ec._add_ec(
    "ADMIN_ADD_INCOMING_CURRENCY_UNSUPPORTED",
    1601,
    """
    The currency specified in the "amount" parameter is not
    supported by this exhange.  Returned with an HTTP status
    code of #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "ADMIN_ADD_INCOMING_DB_STORE",
    1602,
    """
    The exchange failed to store information about the incoming
    transfer in its database.  This response is provided with HTTP
    status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_DB_FETCH_FAILED",
    1700,
    """
    The exchange encountered an error (that is not about not finding
    the wire transfer) trying to lookup a wire transfer identifier
    in the database.  This response is provided with HTTP
    status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_DB_INCONSISTENT",
    1701,
    """
    The exchange found internally inconsistent data when resolving a
    wire transfer identifier in the database.  This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_WTID_NOT_FOUND",
    1702,
    """
    The exchange did not find information about the specified
    wire transfer identifier in the database.  This response is
    provided with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_WIRE_FEE_NOT_FOUND",
    1703,
    """
    The exchange did not find information about the wire transfer
    fees it charged. This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_WIRE_FEE_INCONSISTENT",
    1704,
    """
    The exchange found a wire fee that was above the total transfer
    value (and thus could not have been charged). This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_REPLY_MALFORMED",
    1705,
    """
    The exchange responded with a reply that did not satsify the protocol.
    This error is not used in the protocol but created client-side.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_DB_FEE_INCONSISTENT",
    1800,
    """
    The exchange found internally inconsistent fee data when
    resolving a transaction in the database.  This
    response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_DB_FETCH_FAILED",
    1801,
    """
    The exchange encountered an error (that is not about not finding
    the transaction) trying to lookup a transaction
    in the database.  This response is provided with HTTP
    status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_NOT_FOUND",
    1802,
    """
    The exchange did not find information about the specified
    transaction in the database.  This response is
    provided with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_WTID_RESOLUTION_ERROR",
    1803,
    """
    The exchange failed to identify the wire transfer of the
    transaction (or information about the plan that it was supposed
    to still happen in the future).  This response is provided with
    HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_MERCHANT_SIGNATURE_INVALID",
    1804,
    """
    The signature of the merchant is invalid.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "RECOUP_DENOMINATION_KEY_UNKNOWN",
    1850,
    """
    The given denomination key is not in the "recoup" set of the
    exchange right now.  This response is provided with an
    HTTP status code of #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "RECOUP_SIGNATURE_INVALID",
    1851,
    """
    The given coin signature is invalid for the request.
    This response is provided with an
    HTTP status code of #MHD_HTTP_FORBIDDEN.
    """,
)

ec._add_ec(
    "RECOUP_DENOMINATION_SIGNATURE_INVALID",
    1852,
    """
    The signature of the denomination key over the coin is not valid.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "RECOUP_DB_FETCH_FAILED",
    1853,
    """
    The exchange failed to access its own database about reserves.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "RECOUP_WITHDRAW_NOT_FOUND",
    1854,
    """
    The exchange could not find the corresponding withdraw operation.
    The request is denied.  This response is provided with an HTTP
    status code of #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "RECOUP_HISTORY_DB_ERROR",
    1855,
    """
    The exchange obtained an internally inconsistent transaction
    history for the given coin. This response is provided with HTTP
    status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "RECOUP_DB_PUT_FAILED",
    1856,
    """
    The exchange failed to store information about the recoup to be
    performed in the database. This response is provided with HTTP
    status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "RECOUP_COIN_BALANCE_ZERO",
    1857,
    """
    The coin's remaining balance is zero.  The request is denied.
    This response is provided with an HTTP status code of
    #MHD_HTTP_FORBIDDEN.
    """,
)

ec._add_ec(
    "RECOUP_BLINDING_FAILED",
    1858,
    """
    The exchange failed to reproduce the coin's blinding.
    This response is provided with an HTTP status code of
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "RECOUP_COIN_BALANCE_NEGATIVE",
    1859,
    """
    The coin's remaining balance is zero.  The request is denied.
    This response is provided with an HTTP status code of
    #MHD_HTTP_INTERNAL_SERVER_ERROR
    """,
)

ec._add_ec(
    "RECOUP_DENOMINATION_VALIDITY_IN_FUTURE",
    1860,
    """
    Validity period of the denomination key
    is in the future.  Returned with an HTTP
    status of #MHD_HTTP_PRECONDITION_FAILED.
    """,
)

ec._add_ec(
    "RECOUP_REPLY_MALFORMED",
    1861,
    """
    The exchange responded with a reply that did not satsify the protocol.
    This error is not used in the protocol but created client-side.
    """,
)

ec._add_ec(
    "KEYS_HAVE_NOT_NUMERIC",
    1900,
    """
    The "have" parameter was not a natural number.
    This reponse is provied with an HTTP status code of
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "KEYS_MISSING",
    1901,
    """
    We currently cannot find any keys.
    This reponse is provied with an HTTP status code of
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "KEYS_TIMETRAVEL_FORBIDDEN",
    1902,
    """
    This exchange does not allow clients to request /keys for
    times other than the current (exchange) time.
    This reponse is provied with an HTTP status code of
    #MHD_HTTP_FORBIDDEN.
    """,
)


ec._add_ec(
    "INSTANCE_UNKNOWN",
    2000,
    """
    The backend could not find the merchant instance specified
    in the request.   This response is
    provided with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)


ec._add_ec(
    "PROPOSAL_INSTANCE_CONFIGURATION_LACKS_WIRE",
    2002,
    """
    The backend lacks a wire transfer method configuration option
    for the given instance.
    """,
)

ec._add_ec(
    "PAY_EXCHANGE_FAILED",
    2101,
    """
    The exchange failed to provide a meaningful response
    to a /deposit request.  This response is provided
    with HTTP status code #MHD_HTTP_SERVICE_UNAVAILABLE.
    """,
)

ec._add_ec(
    "PAY_DB_STORE_PAY_ERROR",
    2102,
    """
    The merchant failed to commit the exchanges' response to
    a /deposit request to its database.  This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PAY_EXCHANGE_REJECTED",
    2103,
    """
    The specified exchange is not supported/trusted by
    this merchant.  This response is provided
    with HTTP status code #MHD_HTTP_PRECONDITION_FAILED.
    """,
)

ec._add_ec(
    "PAY_DENOMINATION_KEY_NOT_FOUND",
    2104,
    """
    The denomination key used for payment is not listed among the
    denomination keys of the exchange.  This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_DENOMINATION_KEY_AUDITOR_FAILURE",
    2105,
    """
    The denomination key used for payment is not audited by an
    auditor approved by the merchant.  This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_AMOUNT_OVERFLOW",
    2106,
    """
    There was an integer overflow totaling up the amounts or
    deposit fees in the payment.  This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_FEES_EXCEED_PAYMENT",
    2107,
    """
    The deposit fees exceed the total value of the payment.
    This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_PAYMENT_INSUFFICIENT_DUE_TO_FEES",
    2108,
    """
    After considering deposit fees, the payment is insufficient
    to satisfy the required amount for the contract.
    This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_PAYMENT_INSUFFICIENT",
    2109,
    """
    While the merchant is happy to cover all applicable deposit fees,
    the payment is insufficient to satisfy the required amount for
    the contract.  This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_COIN_SIGNATURE_INVALID",
    2110,
    """
    The signature over the contract of one of the coins
    was invalid. This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_EXCHANGE_TIMEOUT",
    2111,
    """
    We failed to contact the exchange for the /pay request.
    This response is provided
    with HTTP status code #MHD_HTTP_SERVICE_UNAVAILABLE.
    """,
)

ec._add_ec(
    "PAY_MERCHANT_SIGNATURE_INVALID",
    2113,
    """
    The signature over the contract of the merchant
    was invalid. This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_REFUND_DEADLINE_PAST_WIRE_TRANSFER_DEADLINE",
    2114,
    """
    The refund deadline was after the transfer deadline.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_COINS_ARRAY_EMPTY",
    2115,
    """
    The request fails to provide coins for the payment.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_DB_FETCH_PAY_ERROR",
    2116,
    """
    The merchant failed to fetch the merchant's previous state with
    respect to a /pay request from its database.  This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PAY_DB_FETCH_TRANSACTION_ERROR",
    2117,
    """
    The merchant failed to fetch the merchant's previous state with
    respect to transactions from its database.  This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PAY_DB_TRANSACTION_ID_CONFLICT",
    2118,
    """
    The transaction ID was used for a conflicing transaction before.
    This response is
    provided with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_DB_STORE_TRANSACTION_ERROR",
    2119,
    """
    The merchant failed to store the merchant's state with
    respect to the transaction in its database.  This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PAY_EXCHANGE_KEYS_FAILURE",
    2120,
    """
    The exchange failed to provide a valid response to
    the merchant's /keys request.
    This response is provided
    with HTTP status code #MHD_HTTP_SERVICE_UNAVAILABLE.
    """,
)

ec._add_ec(
    "PAY_OFFER_EXPIRED",
    2121,
    """
    The payment is too late, the offer has expired.
    This response is
    provided with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_MERCHANT_FIELD_MISSING",
    2122,
    """
    The "merchant" field is missing in the proposal data.
    This response is
    provided with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "PAY_FAILED_COMPUTE_PROPOSAL_HASH",
    2123,
    """
    Failed computing a hash code (likely server out-of-memory).
    This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PAY_WIRE_HASH_UNKNOWN",
    2124,
    """
    Failed to locate merchant's account information matching the
    wire hash given in the proposal.
    This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PAY_WIRE_FEE_CURRENCY_MISSMATCH",
    2125,
    """
    We got different currencies for the wire fee and the maximum wire
    fee.  This response is provided with HTTP status code of
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PAY_ABORT_REFUND_REFUSED_PAYMENT_COMPLETE",
    2126,
    """
    The merchant refuses to abort and refund the payment
    operation as the payment succeeded already.
    This response is provided with HTTP status code of
    #MHD_HTTP_FORBIDDEN.
    """,
)

ec._add_ec(
    "PAY_WRONG_INSTANCE",
    2127,
    """
    A unknown merchant public key was included in the payment.  That
    happens typically when the wallet sends the payment to the wrong
    merchant instance.
    """,
)

ec._add_ec(
    "HISTORY_TIMESTAMP_OVERFLOW",
    2200,
    """
    Integer overflow with sepcified timestamp argument detected.
    This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "HISTORY_DB_FETCH_ERROR",
    2201,
    """
    Failed to retrieve history from merchant database.
    This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "POLL_PAYMENT_CONTRACT_NOT_FOUND",
    2250,
    """
    The backend could not find the contract specified
    in the request.   This response is
    provided with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_EXCHANGE_TIMEOUT",
    2300,
    """
    We failed to contact the exchange for the /track/transaction
    request.  This response is provided with HTTP status code
    #MHD_HTTP_SERVICE_UNAVAILABLE.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_TRANSACTION_UNKNOWN",
    2302,
    """
    The backend could not find the transaction specified
    in the request.   This response is
    provided with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_DB_FETCH_TRANSACTION_ERROR",
    2303,
    """
    The backend had a database access error trying to
    retrieve transaction data from its database.
    The response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_DB_FETCH_PAYMENT_ERROR",
    2304,
    """
    The backend had a database access error trying to
    retrieve payment data from its database.
    The response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_DB_NO_DEPOSITS_ERROR",
    2305,
    """
    The backend found no applicable deposits in the database.
    This is odd, as we know about the transaction, but not
    about deposits we made for the transaction.  The response is
    provided with HTTP status code #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_COIN_TRACE_ERROR",
    2306,
    """
    We failed to obtain a wire transfer identifier for one
    of the coins in the transaction.  The response is
    provided with HTTP status code #MHD_HTTP_FAILED_DEPENDENCY if
    the exchange had a hard error, or #MHD_HTTP_ACCEPTED if the
    exchange signaled that the transfer was in progress.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_WIRE_TRANSFER_TRACE_ERROR",
    2307,
    """
    We failed to obtain the full wire transfer identifier for the
    transfer one of the coins was aggregated into.
    The response is
    provided with HTTP status code #MHD_HTTP_FAILED_DEPENDENCY.
    """,
)

ec._add_ec(
    "DEPOSITS_GET_CONFLICTING_REPORTS",
    2308,
    """
    We got conflicting reports from the exhange with
    respect to which transfers are included in which
    aggregate.
    The response is
    provided with HTTP status code #MHD_HTTP_FAILED_DEPENDENCY.
    """,
)


ec._add_ec(
    "TRANSFERS_GET_EXCHANGE_TIMEOUT",
    2400,
    """
    We failed to contact the exchange for the /track/transfer
    request.  This response is provided with HTTP status code
    #MHD_HTTP_SERVICE_UNAVAILABLE.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_DB_STORE_COIN_ERROR",
    2402,
    """
    We failed to persist coin wire transfer information in
    our merchant database.
    The response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_REQUEST_ERROR",
    2403,
    """
    We internally failed to execute the /track/transfer request.
    The response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_DB_STORE_TRANSFER_ERROR",
    2404,
    """
    We failed to persist wire transfer information in
    our merchant database.
    The response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_EXCHANGE_ERROR",
    2405,
    """
    The exchange returned an error from /track/transfer.
    The response is
    provided with HTTP status code #MHD_HTTP_FAILED_DEPENDENCY.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_DB_FETCH_DEPOSIT_ERROR",
    2406,
    """
    We failed to fetch deposit information from
    our merchant database.
    The response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_DB_INTERNAL_LOGIC_ERROR",
    2407,
    """
    We encountered an internal logic error.
    The response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_CONFLICTING_REPORTS",
    2408,
    """
    The exchange gave conflicting information about a coin which has
    been wire transferred.
    The response is provided with HTTP status code
    #MHD_HTTP_FAILED_DEPENDENCY.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_JSON_RESPONSE_ERROR",
    2409,
    """
    The merchant backend had problems in creating the JSON response.
    """,
)

ec._add_ec(
    "TRANSFERS_GET_JSON_BAD_WIRE_FEE",
    2410,
    """
    The exchange charged a different wire fee than what it
    originally advertised, and it is higher.  The response
    is provied with an HTTP status of
    #MHD_HTTP_FAILED_DEPENDENCY.
    """,
)

ec._add_ec(
    "MAP_IN_UNMATCHED_HASH",
    2500,
    """
    The hash provided in the request of /map/in does not match
    the contract sent alongside in the same request.
    """,
)

ec._add_ec(
    "PROPOSAL_STORE_DB_ERROR",
    2501,
    """
    The backend encountered an error while trying to store the
    h_contract_terms into the database.
    The response is provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PROPOSAL_LOOKUP_DB_ERROR",
    2502,
    """
    The backend encountered an error while trying to retrieve the
    proposal data from database.  Likely to be an internal error.
    """,
)

ec._add_ec(
    "PROPOSAL_LOOKUP_NOT_FOUND",
    2503,
    """
    The proposal being looked up is not found on this merchant.
    """,
)

ec._add_ec(
    "PROPOSAL_NO_LOCALTIME",
    2504,
    """
    The proposal had no timestamp and the backend failed to obtain the local time.
    Likely to be an internal error.
    """,
)

ec._add_ec(
    "PROPOSAL_ORDER_PARSE_ERROR",
    2505,
    """
    The order provided to the backend could not be parsed, some
    required fields were missing or ill-formed.
    Returned as a bad request.
    """,
)

ec._add_ec(
    "PROPOSAL_STORE_DB_ERROR_HARD",
    2506,
    """
    The backend encountered an error while trying to find the
    existing proposal in the database.
    The response is provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PROPOSAL_STORE_DB_ERROR_SOFT",
    2507,
    """
    The backend encountered an error while trying to find the
    existing proposal in the database.
    The response is provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PROPOSAL_STORE_DB_ERROR_ALREADY_EXISTS",
    2508,
    """
    The backend encountered an error: the proposal already
    exists.
    The response is provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "PROPOSAL_ORDER_BAD_CURRENCY",
    2509,
    """
    The order provided to the backend uses an amount
    in a currency that does not match the backend's
    configuration.
    Returned as a bad request.
    """,
)

ec._add_ec(
    "REFUND_ORDER_ID_UNKNOWN",
    2601,
    """
    The frontend gave an unknown order id to issue the refund to.
    """,
)

ec._add_ec(
    "REFUND_INCONSISTENT_AMOUNT",
    2602,
    """
    The amount to be refunded is inconsistent: either is lower than
    the previous amount being awarded, or it is too big to be paid back.
    In this second case, the fault stays on the business dept. side.
    Returned with an HTTP status of #MHD_HTTP_CONFLICT.
    """,
)

ec._add_ec(
    "REFUND_LOOKUP_DB_ERROR",
    2603,
    """
    The backend encountered an error while trying to retrieve the
    payment data from database.  Likely to be an internal error.
    """,
)

ec._add_ec(
    "REFUND_MERCHANT_DB_COMMIT_ERROR",
    2604,
    """
    The backend encountered an error while trying to retrieve the
    payment data from database.  Likely to be an internal error.
    """,
)

ec._add_ec(
    "PAY_DB_STORE_PAYMENTS_ERROR",
    2605,
    """
    Payments are stored in a single db transaction; this error indicates
    that one db operation within that transaction failed.  This might involve
    storing of coins or other related db operations, like starting/committing
    the db transaction or marking a contract as paid.
    """,
)

ec._add_ec(
    "PAY_REFUND_SIGNATURE_FAILED",
    2606,
    """
    The backend failed to sign the refund request.
    """,
)


ec._add_ec(
    "TIP_AUTHORIZE_INSTANCE_DOES_NOT_TIP",
    2701,
    """
    The backend knows the instance that was supposed to support the
    tip, but it was not configured for tipping (i.e. has no exchange
    associated with it).  Likely to be a configuration
    error. Returned with an HTTP status code of #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "TIP_AUTHORIZE_RESERVE_EXPIRED",
    2702,
    """
    The reserve that was used to fund the tips has expired.
    Returned with an HTTP status code of "not found".
    """,
)

ec._add_ec(
    "TIP_AUTHORIZE_RESERVE_UNKNOWN",
    2703,
    """
    The reserve that was used to fund the tips was not found in the DB.
    Returned with an HTTP status code of "not found".
    """,
)

ec._add_ec(
    "TIP_AUTHORIZE_INSUFFICIENT_FUNDS",
    2704,
    """
    The backend knows the instance that was supposed to support the
    tip, and it was configured for tipping. However, the funds
    remaining are insufficient to cover the tip, and the merchant
    should top up the reserve.
    Returned with an HTTP status code of "PRECONDITION FAILED".
    """,
)

ec._add_ec(
    "TIP_AUTHORIZE_DB_HARD_ERROR",
    2705,
    """
    The backend had trouble accessing the database to persist
    information about the tip authorization.
    Returned with an HTTP status code of internal error.
    """,
)

ec._add_ec(
    "TIP_AUTHORIZE_DB_SOFT_ERROR",
    2706,
    """
    The backend had trouble accessing the database to persist
    information about the tip authorization.
    The problem might be fixable by repeating the transaction.
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_STATUS_FAILED_EXCHANGE_DOWN",
    2707,
    """
    The backend failed to obtain a reserve status from the exchange.
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_HISTORY_FAILED_EMPTY",
    2708,
    """
    The backend got an empty (!) reserve history from the exchange.
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_HISTORY_INVALID_NO_DEPOSIT",
    2709,
    """
    The backend got an invalid reserve history
    (fails to start with a deposit) from the exchange.
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_HISTORY_INVALID_CURRENCY",
    2710,
    """
    The backend got an reserve history
    with a bad currency from the exchange.
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_CURRENCY_MISSMATCH",
    2711,
    """
    The backend got a reserve with a currency that does not match
    the backend's currency.
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_HISTORY_ARITHMETIC_ISSUE_DEPOSIT",
    2712,
    """
    The backend got a reserve history with amounts it cannot
    process (addition failure in deposits).
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_HISTORY_ARITHMETIC_ISSUE_WITHDRAW",
    2713,
    """
    The backend got a reserve history with amounts it cannot
    process (addition failure in withdraw amounts).
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_HISTORY_ARITHMETIC_ISSUE_CLOSED",
    2714,
    """
    The backend got a reserve history with amounts it cannot
    process (addition failure in closing amounts).
    """,
)

ec._add_ec(
    "TIP_QUERY_RESERVE_HISTORY_ARITHMETIC_ISSUE_INCONSISTENT",
    2715,
    """
    The backend got a reserve history with inconsistent amounts.
    """,
)

ec._add_ec(
    "TIP_QUERY_DB_ERROR",
    2716,
    """
    The backend encountered a database error querying tipping reserves.
    """,
)


ec._add_ec(
    "TIP_ENABLE_DB_TRANSACTION_ERROR",
    2750,
    """
    The backend had trouble accessing the database to persist
    information about enabling tips.
    Returned with an HTTP status code of internal error.
    """,
)

ec._add_ec(
    "TIP_PICKUP_TIP_ID_UNKNOWN",
    2800,
    """
    The tip ID is unknown.  This could happen if the tip has
    expired.  Returned with an HTTP status code of "not found".
    """,
)

ec._add_ec(
    "TIP_PICKUP_NO_FUNDS",
    2801,
    """
    The amount requested exceeds the remaining tipping balance for this tip ID.
    Returned with an HTTP status code of "Conflict" (as it conflicts with
    a previous pickup operation).
    """,
)

ec._add_ec(
    "TIP_PICKUP_DB_ERROR_SOFT",
    2802,
    """
    We encountered a DB error, repeating the request may work.
    """,
)

ec._add_ec(
    "TIP_PICKUP_DB_ERROR_HARD",
    2803,
    """
    We encountered a DB error, repeating the request will not help.
    This is an internal server error.
    """,
)

ec._add_ec(
    "TIP_PICKUP_AMOUNT_CHANGED",
    2804,
    """
    The same pickup ID was already used for picking up a different
    amount. This points to a very strange internal error as the
    pickup ID is derived from the denomination key which is tied
    to a particular amount. Hence this should also be an internal
    server error.
    """,
)

ec._add_ec(
    "TIP_PICKUP_EXCHANGE_DOWN",
    2805,
    """
    We failed to contact the exchange to obtain the denomination
    keys.  Returned with a response code "failed dependency" (424).
    """,
)

ec._add_ec(
    "TIP_PICKUP_EXCHANGE_LACKED_KEYS",
    2806,
    """
    We contacted the exchange to obtain any denomination
    keys, but got no valid keys.
    Returned with a response code "failed dependency" (424).
    """,
)

ec._add_ec(
    "TIP_PICKUP_EXCHANGE_LACKED_KEY",
    2807,
    """
    We contacted the exchange to obtain at least one of
    the denomination keys specified in the request.
    Returned with a response code "not found" (404).
    """,
)

ec._add_ec(
    "TIP_PICKUP_EXCHANGE_AMOUNT_OVERFLOW",
    2808,
    """
    We encountered an arithmetic issue totaling up the
    amount to withdraw. Returned with a response code
    of "bad request".
    """,
)

ec._add_ec(
    "TIP_PICKUP_EXCHANGE_TOO_MANY_PLANCHETS",
    2809,
    """
    The number of planchets specified exceeded the
    limit. Returned with a response code
    of "bad request".
    """,
)

ec._add_ec(
    "TIP_QUERY_TIP_ID_UNKNOWN",
    2810,
    """
    The tip id is unknown.  This could happen if the
    tip id is wrong or the tip authorization expired.
    """,
)

ec._add_ec(
    "CHECK_PAYMENT_DB_FETCH_CONTRACT_TERMS_ERROR",
    2911,
    """
    We failed to contract terms from our merchant database.
    The response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "CHECK_PAYMENT_DB_FETCH_ORDER_ERROR",
    2912,
    """
    We failed to contract terms from our merchant database.
    The response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "CHECK_PAYMENT_ORDER_ID_UNKNOWN",
    2913,
    """
    The order id we're checking is unknown, likely
    the frontend did not create the order first.
    """,
)

ec._add_ec(
    "CHECK_PAYMENT_FAILED_COMPUTE_PROPOSAL_HASH",
    2914,
    """
    Failed computing a hash code (likely server out-of-memory).
    This response is
    provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "CHECK_PAYMENT_SESSION_SIGNATURE_INVALID",
    2915,
    """
    Signature "session_sig" failed to verify. This response is
    provided with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)


ec._add_ec(
    "DEPOSIT_CONFIRMATION_SIGNATURE_INVALID",
    3000,
    """
    The signature from the exchange on the deposit confirmation
    is invalid.  Returned with a "400 Bad Request" status code.
    """,
)

ec._add_ec(
    "DEPOSIT_CONFIRMATION_STORE_DB_ERROR",
    3001,
    """
    The auditor had trouble storing the deposit confirmation
    in its database. Returned with an HTTP status code of
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "LIST_EXCHANGES_DB_ERROR",
    3002,
    """
    The auditor had trouble retrieving the exchange list
    from its database. Returned with an HTTP status code of
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "AUDITOR_EXCHANGE_STORE_DB_ERROR",
    3003,
    """
    The auditor had trouble storing an exchange in its
    database. Returned with an HTTP status code of
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "AUDITOR_EXCHANGES_REPLY_MALFORMED",
    3004,
    """
    The auditor (!) responded with a reply that did not satsify the protocol.
    This error is not used in the protocol but created client-side.
    """,
)

ec._add_ec(
    "TEST_ECDH_ERROR",
    4000,
    """
    The exchange failed to compute ECDH.  This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TEST_EDDSA_INVALID",
    4001,
    """
    The EdDSA test signature is invalid.  This response is provided
    with HTTP status code #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "TEST_EDDSA_ERROR",
    4002,
    """
    The exchange failed to compute the EdDSA test signature.  This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TEST_RSA_GEN_ERROR",
    4003,
    """
    The exchange failed to generate an RSA key.  This response is provided
    with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TEST_RSA_PUB_ERROR",
    4004,
    """
    The exchange failed to compute the public RSA key.  This response
    is provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "TEST_RSA_SIGN_ERROR",
    4005,
    """
    The exchange failed to compute the RSA signature.  This response
    is provided with HTTP status code #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)


ec._add_ec(
    "SERVER_JSON_INVALID",
    5000,
    """
    The JSON in the server's response was malformed.  This response
    is provided with HTTP status code of 0.
    """,
)

ec._add_ec(
    "SERVER_SIGNATURE_INVALID",
    5001,
    """
    A signature in the server's response was malformed.  This response
    is provided with HTTP status code of 0.
    """,
)


ec._add_ec(
    "BANK_SAME_ACCOUNT",
    5102,
    """
    Wire tranfer attempted with credit and debit party being
    the same bank account.
    """,
)

ec._add_ec(
    "BANK_UNALLOWED_DEBIT",
    5103,
    """
    Wire transfer impossible, due to financial limitation of
    the party that attempted the payment.
    """,
)

ec._add_ec(
    "BANK_CURRENCY_MISMATCH",
    5104,
    """
    Arithmetic operation between two amounts of different
    currency was attempted.
    """,
)

ec._add_ec(
    "BANK_PARAMETER_MISSING_OR_INVALID",
    5105,
    """
    At least one GET parameter was either missing or invalid for
    the requested operation.
    """,
)

ec._add_ec(
    "BANK_JSON_INVALID",
    5106,
    """
    JSON body sent was invalid for the requested operation.
    """,
)

ec._add_ec(
    "BANK_NEGATIVE_NUMBER_AMOUNT",
    5107,
    """
    Negative number was used (as value and/or fraction) to initiate
    a Amount object.
    """,
)

ec._add_ec(
    "BANK_NUMBER_TOO_BIG",
    5108,
    """
    A number too big was used (as value and/or fraction) to initiate
    a amount object.
    """,
)

ec._add_ec(
    "BANK_LOGIN_FAILED",
    5109,
    """
    Could not login for the requested operation.
    """,
)

ec._add_ec(
    "BANK_UNKNOWN_ACCOUNT",
    5110,
    """
    The bank account referenced in the requested operation
    was not found.  Returned along "400 Not found".
    """,
)

ec._add_ec(
    "BANK_TRANSACTION_NOT_FOUND",
    5111,
    """
    The transaction referenced in the requested operation (typically
    a reject operation), was not found.
    """,
)


ec._add_ec(
    "BANK_BAD_FORMAT_AMOUNT",
    5112,
    """
    Bank received a malformed amount string.
    """,
)

ec._add_ec(
    "BANK_REJECT_NO_RIGHTS",
    5200,
    """
    The client does not own the account credited by the transaction
    which is to be rejected, so it has no rights do reject it.  To be
    returned along HTTP 403 Forbidden.
    """,
)


ec._add_ec(
    "BANK_UNMANAGED_EXCEPTION",
    5300,
    """
    This error code is returned when no known exception types
    captured the exception, and comes along with a 500 Internal
    Server Error.
    """,
)


ec._add_ec(
    "BANK_SOFT_EXCEPTION",
    5400,
    """
    This error code is used for all those exceptions that
    do not really need a specific error code to return to
    the client, but need to signal the middleware that the
    bank is not responding with 500 Internal Server Error.

    Used for example when a client is trying to register
    with a unavailable username.
    """,
)

ec._add_ec(
    "BANK_TRANSFER_REQUEST_UID_REUSED",
    5500,
    """
    The request UID for a request to transfer funds has already
    been used, but with different details for the transfer.
    """,
)


ec._add_ec(
    "SYNC_DB_FETCH_ERROR",
    6000,
    """
    The sync service failed to access its database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "SYNC_BACKUP_UNKNOWN",
    6001,
    """
    The sync service failed find the record in its database.
    This response is provided with HTTP status code
    #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "SYNC_ACCOUNT_UNKNOWN",
    6002,
    """
    The sync service failed find the account in its database.
    This response is provided with HTTP status code
    #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "SYNC_BAD_IF_NONE_MATCH",
    6003,
    """
    The SHA-512 hash provided in the If-None-Match header is
    malformed.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "SYNC_BAD_IF_MATCH",
    6004,
    """
    The SHA-512 hash provided in the If-Match header is
    malformed or missing.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "SYNC_BAD_SYNC_SIGNATURE",
    6005,
    """
    The signature provided in the "Sync-Signature" header is
    malformed or missing.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "SYNC_INVALID_SIGNATURE",
    6007,
    """
    The signature provided in the "Sync-Signature" header
    does not match the account, old or new Etags.
    This response is provided with HTTP status code
    #MHD_HTTP_FORBIDDEN.
    """,
)

ec._add_ec(
    "SYNC_BAD_CONTENT_LENGTH",
    6008,
    """
    The "Content-length" field for the upload is either
    not a number, or too big, or missing.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "SYNC_EXCESSIVE_CONTENT_LENGTH",
    6009,
    """
    The "Content-length" field for the upload is
    too big based on the server's terms of service.
    This response is provided with HTTP status code
    #MHD_HTTP_PAYLOAD_TOO_LARGE.
    """,
)

ec._add_ec(
    "SYNC_OUT_OF_MEMORY_ON_CONTENT_LENGTH",
    6010,
    """
    The server is out of memory to handle the upload.
    Trying again later may succeed.
    This response is provided with HTTP status code
    #MHD_HTTP_PAYLOAD_TOO_LARGE.
    """,
)

ec._add_ec(
    "SYNC_INVALID_UPLOAD",
    6011,
    """
    The uploaded data does not match the Etag.
    This response is provided with HTTP status code
    #MHD_HTTP_BAD_REQUEST.
    """,
)

ec._add_ec(
    "SYNC_DATABASE_FETCH_ERROR",
    6012,
    """
    We failed to check for existing upload data in the database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "SYNC_SHUTDOWN",
    6013,
    """
    HTTP server was being shutdown while this operation was
    pending.
    This response is provided with HTTP status code
    #MHD_HTTP_SERVICE_UNAVAILABLE.
    """,
)

ec._add_ec(
    "SYNC_PAYMENT_TIMEOUT",
    6014,
    """
    HTTP server experienced a timeout while awaiting
    promised payment.
    This response is provided with HTTP status code
    #MHD_HTTP_REQUEST_TIMEOUT.
    """,
)

ec._add_ec(
    "SYNC_PAYMENT_CREATE_DB_ERROR",
    6015,
    """
    Sync could not store order data in its own database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "SYNC_PAYMENT_CONFIRM_DB_ERROR",
    6016,
    """
    Sync could not store payment confirmation in its own database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "SYNC_PAYMENT_CHECK_ORDER_DB_ERROR",
    6017,
    """
    Sync could not fetch information about possible existing
    orders from its own database.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "SYNC_PAYMENT_CREATE_BACKEND_ERROR",
    6018,
    """
    Sync could not setup the payment request with its own backend.
    This response is provided with HTTP status code
    #MHD_HTTP_INTERNAL_SERVER_ERROR.
    """,
)

ec._add_ec(
    "SYNC_PREVIOUS_BACKUP_UNKNOWN",
    6019,
    """
    The sync service failed find the backup to be updated in its database.
    This response is provided with HTTP status code
    #MHD_HTTP_NOT_FOUND.
    """,
)

ec._add_ec(
    "END",
    9999,
    """
End of error code range.
""",
)