# Copyright (c) 2026 Emanuele Bellocchia
#
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# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# THE SOFTWARE.
"""Module for Avax address encoding/decoding."""
# Imports
from typing import Any, Union
from typing_extensions import override
from bip_utils.addr.addr_dec_utils import AddrDecUtils
from bip_utils.addr.atom_addr import AtomAddrDecoder, AtomAddrEncoder
from bip_utils.addr.iaddr_decoder import IAddrDecoder
from bip_utils.addr.iaddr_encoder import IAddrEncoder
from bip_utils.coin_conf import CoinsConf
from bip_utils.ecc import IPublicKey
class _AvaxAddrUtils:
"""Avax address utility class."""
@staticmethod
def DecodeAddr(addr: str,
prefix: str,
hrp: str) -> bytes:
"""
Decode an Avax address to bytes.
Args:
addr (str) : Address string
prefix (str): Address prefix
hrp (str) : Address HRP
Returns:
bytes: Public key hash bytes
Raises:
ValueError: If the address encoding is not valid
"""
addr_no_prefix = AddrDecUtils.ValidateAndRemovePrefix(addr, prefix)
return AtomAddrDecoder.DecodeAddr(addr_no_prefix, hrp=hrp)
class AvaxPChainAddrDecoder(IAddrDecoder):
"""
Avax P-Chain address decoder class.
It allows the Avax P-Chain address decoding.
"""
@override
@staticmethod
def DecodeAddr(addr: str,
**kwargs: Any) -> bytes:
"""
Decode an Avax P-Chain address to bytes.
Args:
addr (str): Address string
**kwargs : Not used
Returns:
bytes: Public key hash bytes
Raises:
ValueError: If the address encoding is not valid
"""
return _AvaxAddrUtils.DecodeAddr(addr,
CoinsConf.AvaxPChain.ParamByKey("addr_prefix"),
CoinsConf.AvaxPChain.ParamByKey("addr_hrp"))
class AvaxPChainAddrEncoder(IAddrEncoder):
"""
Avax P-Chain address encoder class.
It allows the Avax P-Chain address encoding.
"""
@override
@staticmethod
def EncodeKey(pub_key: Union[bytes, IPublicKey],
**kwargs: Any) -> str:
"""
Encode a public key to Avax P-Chain address.
Args:
pub_key (bytes or IPublicKey): Public key bytes or object
**kwargs : Not used
Returns:
str: Address string
Raises:
ValueError: If the public key is not valid
TypeError: If the public key is not secp256k1
"""
prefix = CoinsConf.AvaxPChain.ParamByKey("addr_prefix")
return prefix + AtomAddrEncoder.EncodeKey(pub_key,
hrp=CoinsConf.AvaxPChain.ParamByKey("addr_hrp"))
class AvaxXChainAddrDecoder(IAddrDecoder):
"""
Avax X-Chain address decoder class.
It allows the Avax X-Chain address decoding.
"""
@override
@staticmethod
def DecodeAddr(addr: str,
**kwargs: Any) -> bytes:
"""
Decode an Avax X-Chain address to bytes.
Args:
addr (str): Address string
**kwargs : Not used
Returns:
bytes: Public key hash bytes
Raises:
ValueError: If the address encoding is not valid
"""
return _AvaxAddrUtils.DecodeAddr(addr,
CoinsConf.AvaxXChain.ParamByKey("addr_prefix"),
CoinsConf.AvaxXChain.ParamByKey("addr_hrp"))
class AvaxXChainAddrEncoder(IAddrEncoder):
"""
Avax X-Chain address encoder class.
It allows the Avax X-Chain address encoding.
"""
@override
@staticmethod
def EncodeKey(pub_key: Union[bytes, IPublicKey],
**kwargs: Any) -> str:
"""
Encode a public key to Avax X-Chain address.
Args:
pub_key (bytes or IPublicKey): Public key bytes or object
**kwargs : Not used
Returns:
str: Address string
Raises:
ValueError: If the public key is not valid
TypeError: If the public key is not secp256k1
"""
prefix = CoinsConf.AvaxXChain.ParamByKey("addr_prefix")
return prefix + AtomAddrEncoder.EncodeKey(pub_key,
hrp=CoinsConf.AvaxXChain.ParamByKey("addr_hrp"))
# Deprecated: only for compatibility, Encoder classes shall be used instead
AvaxPChainAddr = AvaxPChainAddrEncoder
AvaxXChainAddr = AvaxXChainAddrEncoder