import os
import platform

from twisted.internet import defer

from . import data
from p2pool.util import math, pack, jsonrpc

@defer.inlineCallbacks
def check_genesis_block(bitcoind, genesis_block_hash):
    try:
        yield bitcoind.rpc_getblock(genesis_block_hash)
    except jsonrpc.Error_for_code(-5):
        defer.returnValue(False)
    else:
        defer.returnValue(True)

nets = dict(
    bitcoin=math.Object(
        P2P_PREFIX='f9beb4d9'.decode('hex'),
        P2P_PORT=8333,
        ADDRESS_VERSION=0,
        RPC_PORT=8332,
        RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
            (yield check_genesis_block(bitcoind, '000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f')) and
            not (yield bitcoind.rpc_getinfo())['testnet']
        )),
        SUBSIDY_FUNC=lambda height: 50*100000000 >> (height + 1)//210000,
        POW_FUNC=data.hash256,
        BLOCK_PERIOD=600, # s
        SYMBOL='BTC',
        CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Bitcoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Bitcoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.bitcoin'), 'bitcoin.conf'),
        BLOCK_EXPLORER_URL_PREFIX='https://blockchain.info/block/',
        ADDRESS_EXPLORER_URL_PREFIX='https://blockchain.info/address/',
        TX_EXPLORER_URL_PREFIX='https://blockchain.info/tx/',
        SANE_TARGET_RANGE=(2**256//2**32//1000 - 1, 2**256//2**32 - 1),
        DUMB_SCRYPT_DIFF=1,
        DUST_THRESHOLD=0.001e8,
    ),
    bitcoin_testnet=math.Object(
        P2P_PREFIX='0b110907'.decode('hex'),
        P2P_PORT=18333,
        ADDRESS_VERSION=111,
        RPC_PORT=18332,
        RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
            'bitcoinaddress' in (yield bitcoind.rpc_help()) and
            (yield bitcoind.rpc_getinfo())['testnet']
        )),
        SUBSIDY_FUNC=lambda height: 50*100000000 >> (height + 1)//210000,
        POW_FUNC=data.hash256,
        BLOCK_PERIOD=600, # s
        SYMBOL='tBTC',
        CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Bitcoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Bitcoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.bitcoin'), 'bitcoin.conf'),
        BLOCK_EXPLORER_URL_PREFIX='http://blockexplorer.com/testnet/block/',
        ADDRESS_EXPLORER_URL_PREFIX='http://blockexplorer.com/testnet/address/',
        TX_EXPLORER_URL_PREFIX='http://blockexplorer.com/testnet/tx/',
        SANE_TARGET_RANGE=(2**256//2**32//1000 - 1, 2**256//2**32 - 1),
        DUMB_SCRYPT_DIFF=1,
        DUST_THRESHOLD=1e8,
    ),
    
    namecoin=math.Object(
        P2P_PREFIX='f9beb4fe'.decode('hex'),
        P2P_PORT=8334,
        ADDRESS_VERSION=52,
        RPC_PORT=8332,
        RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
            'namecoinaddress' in (yield bitcoind.rpc_help()) and
            not (yield bitcoind.rpc_getinfo())['testnet']
        )),
        SUBSIDY_FUNC=lambda height: 50*100000000 >> (height + 1)//210000,
        POW_FUNC=data.hash256,
        BLOCK_PERIOD=600, # s
        SYMBOL='NMC',
        CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Namecoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Namecoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.namecoin'), 'bitcoin.conf'),
        BLOCK_EXPLORER_URL_PREFIX='http://explorer.dot-bit.org/b/',
        ADDRESS_EXPLORER_URL_PREFIX='http://explorer.dot-bit.org/a/',
        TX_EXPLORER_URL_PREFIX='http://explorer.dot-bit.org/tx/',
        SANE_TARGET_RANGE=(2**256//2**32 - 1, 2**256//2**32 - 1),
        DUMB_SCRYPT_DIFF=1,
        DUST_THRESHOLD=0.2e8,
    ),
    namecoin_testnet=math.Object(
        P2P_PREFIX='fabfb5fe'.decode('hex'),
        P2P_PORT=18334,
        ADDRESS_VERSION=111,
        RPC_PORT=8332,
        RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
            'namecoinaddress' in (yield bitcoind.rpc_help()) and
            (yield bitcoind.rpc_getinfo())['testnet']
        )),
        SUBSIDY_FUNC=lambda height: 50*100000000 >> (height + 1)//210000,
        POW_FUNC=data.hash256,
        BLOCK_PERIOD=600, # s
        SYMBOL='tNMC',
        CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Namecoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Namecoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.namecoin'), 'bitcoin.conf'),
        BLOCK_EXPLORER_URL_PREFIX='http://testnet.explorer.dot-bit.org/b/',
        ADDRESS_EXPLORER_URL_PREFIX='http://testnet.explorer.dot-bit.org/a/',
        TX_EXPLORER_URL_PREFIX='http://testnet.explorer.dot-bit.org/tx/',
        SANE_TARGET_RANGE=(2**256//2**32 - 1, 2**256//2**32 - 1),
        DUMB_SCRYPT_DIFF=1,
        DUST_THRESHOLD=1e8,
    ),
    
    litecoin=math.Object(
        P2P_PREFIX='fbc0b6db'.decode('hex'),
        P2P_PORT=9333,
        ADDRESS_VERSION=48,
        RPC_PORT=9332,
        RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
            'litecoinaddress' in (yield bitcoind.rpc_help()) and
            not (yield bitcoind.rpc_getinfo())['testnet']
        )),
        SUBSIDY_FUNC=lambda height: 50*100000000 >> (height + 1)//840000,
        POW_FUNC=lambda data: pack.IntType(256).unpack(__import__('ltc_scrypt').getPoWHash(data)),
        BLOCK_PERIOD=150, # s
        SYMBOL='LTC',
        CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Litecoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Litecoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.litecoin'), 'litecoin.conf'),
        BLOCK_EXPLORER_URL_PREFIX='http://explorer.litecoin.net/block/',
        ADDRESS_EXPLORER_URL_PREFIX='http://explorer.litecoin.net/address/',
        TX_EXPLORER_URL_PREFIX='http://explorer.litecoin.net/tx/',
        SANE_TARGET_RANGE=(2**256//1000000000 - 1, 2**256//1000 - 1),
        DUMB_SCRYPT_DIFF=2**16,
        DUST_THRESHOLD=0.03e8,
    ),
    litecoin_testnet=math.Object(
        P2P_PREFIX='fcc1b7dc'.decode('hex'),
        P2P_PORT=19333,
        ADDRESS_VERSION=111,
        RPC_PORT=19332,
        RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
            'litecoinaddress' in (yield bitcoind.rpc_help()) and
            (yield bitcoind.rpc_getinfo())['testnet']
        )),
        SUBSIDY_FUNC=lambda height: 50*100000000 >> (height + 1)//840000,
        POW_FUNC=lambda data: pack.IntType(256).unpack(__import__('ltc_scrypt').getPoWHash(data)),
        BLOCK_PERIOD=150, # s
        SYMBOL='tLTC',
        CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Litecoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Litecoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.litecoin'), 'litecoin.conf'),
        BLOCK_EXPLORER_URL_PREFIX='http://nonexistent-litecoin-testnet-explorer/block/',
        ADDRESS_EXPLORER_URL_PREFIX='http://nonexistent-litecoin-testnet-explorer/address/',
        TX_EXPLORER_URL_PREFIX='http://nonexistent-litecoin-testnet-explorer/tx/',
        SANE_TARGET_RANGE=(2**256//1000000000 - 1, 2**256 - 1),
        DUMB_SCRYPT_DIFF=2**16,
        DUST_THRESHOLD=1e8,
    ),

    terracoin=math.Object(
        P2P_PREFIX='42babe56'.decode('hex'),
        P2P_PORT=13333,
        ADDRESS_VERSION=0,
        RPC_PORT=13332,
        RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
            'terracoinaddress' in (yield bitcoind.rpc_help()) and
            not (yield bitcoind.rpc_getinfo())['testnet']
        )),
        SUBSIDY_FUNC=lambda height: 20*100000000 >> (height + 1)//1050000,
        POW_FUNC=data.hash256,
        BLOCK_PERIOD=120, # s
        SYMBOL='TRC',
        CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Terracoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Terracoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.terracoin'), 'terracoin.conf'),
        BLOCK_EXPLORER_URL_PREFIX='http://trc.cryptocoinexplorer.com/block/',
        ADDRESS_EXPLORER_URL_PREFIX='http://trc.cryptocoinexplorer.com/address/',
        TX_EXPLORER_URL_PREFIX='http://trc.cryptocoinexplorer.com/tx/',
        SANE_TARGET_RANGE=(2**256//2**32//1000 - 1, 2**256//2**32 - 1),
        DUMB_SCRYPT_DIFF=1,
        DUST_THRESHOLD=1e8,
    ),
    terracoin_testnet=math.Object(
        P2P_PREFIX='41babe56'.decode('hex'),
        P2P_PORT=23333,
        ADDRESS_VERSION=111,
        RPC_PORT=23332,
        RPC_CHECK=defer.inlineCallbacks(lambda bitcoind: defer.returnValue(
            'terracoinaddress' in (yield bitcoind.rpc_help()) and
            (yield bitcoind.rpc_getinfo())['testnet']
        )),
        SUBSIDY_FUNC=lambda height: 20*100000000 >> (height + 1)//1050000,
        POW_FUNC=data.hash256,
        BLOCK_PERIOD=120, # s
        SYMBOL='tTRC',
        CONF_FILE_FUNC=lambda: os.path.join(os.path.join(os.environ['APPDATA'], 'Terracoin') if platform.system() == 'Windows' else os.path.expanduser('~/Library/Application Support/Terracoin/') if platform.system() == 'Darwin' else os.path.expanduser('~/.terracoin'), 'terracoin.conf'),
        BLOCK_EXPLORER_URL_PREFIX='http://trc.cryptocoinexplorer.com/testnet/block/',
        ADDRESS_EXPLORER_URL_PREFIX='http://trc.cryptocoinexplorer.com/testnet/address/',
        TX_EXPLORER_URL_PREFIX='http://trc.cryptocoinexplorer.com/testnet/tx/',
        SANE_TARGET_RANGE=(2**256//2**32//1000 - 1, 2**256//2**32 - 1),
        DUMB_SCRYPT_DIFF=1,
        DUST_THRESHOLD=1e8,
    ),

)
for net_name, net in nets.iteritems():
    net.NAME = net_name