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NeoOps.py
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NeoOps.py
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from typing import Any, Dict, List, cast, Union
from boa3.builtin import CreateNewEvent, public, metadata, NeoMetadata, to_script_hash
from boa3.builtin.interop.blockchain import Transaction
from boa3.builtin.interop import Oracle
from boa3.builtin.contract import abort
from boa3.builtin.interop.contract import call_contract, destroy_contract, update_contract, GAS, NEO
from boa3.builtin.interop.runtime import calling_script_hash, script_container, check_witness, time, executing_script_hash
from boa3.builtin.interop.storage import delete, find, get, put
from boa3.builtin.type import UInt160, UInt256
#------------------------
# MANIFEST
#------------------------
@metadata
def manifest_metadata()->NeoMetadata:
meta = NeoMetadata()
meta.author = "StevenWang@Neo"
meta.email = "[email protected]"
meta.description = """Binary Options. With Crypto."""
return meta
#-----------------------
# STORAGE KEYS
#-----------------------
OWNER_KEY = b'OWNER'
POOL_OWNER_KEY = b'pool_owner_'
# throughout this contract, the deployer of the smart contract will be consistently referred to as 'owner'
# while the owners of individual pools will be referred to as 'pool_owner's.
TOKEN_ACCEPTED_KEY = b'token_'
MARGIN_KEY = b'margin_'
TOTAL_MARGIN_KEY = b'total_margin_'
LONG_POSITION_KEY = b'long_'
SHORT_POSITION_KEY = b'short_'
URL_KEY = b'url_'
FILTER_KEY = b'filter_'
RAW_DATA_KEY = b'raw_data_'
EXPIRY_KEY = b'expiry_'
SYMBOL_KEY = b'symbol_'
DESCRIPTION_KEY = b'description_'
THRESHOLD_KEY = b'threshold_'
PLAYER_POSITION_KEY = b'user_bet_'
RESULT_KEY = b'result_'
STATUS_KEY = b'status_' # 0 for open; 1 for canceled; 2 for closed
DEPOSIT_KEY = b'deposit_'
STRIKE_PRICE_KEY = b'strike_'
OWNER_COMMISSION = 1 # 0.1%
POOL_OWNER_COMMISSION = 2 # 0.2%
DEPOSIT_COMMISSION = 2 # 0.2%
CANCEL_PENALTY = 3 # 0.3%
MINIMUM_DEPOSIT = 10 * 100_000_000 # minimum deposit for creating a pool
ORACLE_ADDRESS = 'NTz4UrybSL4C7HSfaVpXV6hcsWTkks8Nrj'
NEO_ADDRESS = NEO
GAS_ADDRESS = GAS
#-----------------------
# CONTRACT LOGIC
#-----------------------
@public
def pool_init(pool_owner: UInt160, token_id: int, url: str, json_filter: str, margin: int, expiry: int, threshold: int, deposit: int, strike: str, description: str)-> UInt256:
if not check_witness(pool_owner):
raise Exception('No authorization.')
tx: Transaction = script_container
pool_id: UInt256 = tx.hash
put(POOL_OWNER_KEY + pool_id, pool_owner)
if token_id == 0:
put(TOKEN_ACCEPTED_KEY + pool_id, NEO_ADDRESS)
elif token_id == 1:
put(TOKEN_ACCEPTED_KEY + pool_id, GAS_ADDRESS)
else:
raise Exception('Unauthorized token.')
if deposit < MINIMUM_DEPOSIT:
raise Exception('Mininum deposit is 1 GAS token.')
transfer_token(GAS, pool_owner, executing_script_hash, deposit, None)
put(DEPOSIT_KEY + pool_id, deposit)
put(URL_KEY + pool_id, url)
put(FILTER_KEY + pool_id, json_filter)
if margin < 0:
raise Exception('Margin must an integer greater than 0.')
put(MARGIN_KEY + pool_id ,margin)
if expiry < time:
raise Exception('Expiry time is set too soon.')
put(EXPIRY_KEY + pool_id, expiry)
if threshold < time:
raise Exception('Threshold time is set too soon.')
put(THRESHOLD_KEY + pool_id, threshold)
put(STRIKE_PRICE_KEY + pool_id, strike)
put(DESCRIPTION_KEY + pool_id, description)
put(LONG_POSITION_KEY + pool_id, 0)
put(SHORT_POSITION_KEY + pool_id, 0)
put(TOTAL_MARGIN_KEY + pool_id, 0)
put(STATUS_KEY + pool_id, 0)
return pool_id
@public
def retrieve_pool(pool_id: UInt256)-> Dict:
pool_owner = get(POOL_OWNER_KEY + pool_id)
if len(pool_owner) == 0:
raise Exception("Pool doesn't exist.")
json = {}
json['pool_owner'] = UInt160(pool_owner)
json['expiry'] = get(EXPIRY_KEY + pool_id).to_int()
json['threshold'] = get(THRESHOLD_KEY + pool_id).to_int()
json['token_id'] = UInt160(get(TOKEN_ACCEPTED_KEY + pool_id))
json['margin'] = get(MARGIN_KEY + pool_id).to_int()
json['total_margin'] = get(TOTAL_MARGIN_KEY + pool_id).to_int()
json['short'] = get(SHORT_POSITION_KEY + pool_id).to_int()
json['long'] = get(LONG_POSITION_KEY + pool_id).to_int()
json['url'] = get(URL_KEY + pool_id).to_str()
json['filter'] = get(FILTER_KEY + pool_id).to_str()
json['description'] = get(DESCRIPTION_KEY + pool_id).to_str()
json['status'] = get(STATUS_KEY + pool_id).to_int()
json['deposit'] = get(DEPOSIT_KEY + pool_id).to_int()
json['strike_price'] = get(STRIKE_PRICE_KEY + pool_id).to_str()
json['result'] = get(RESULT_KEY + pool_id).to_int()
json['raw'] = get(RAW_DATA_KEY + pool_id).to_str()
return json
@public
def list_ongoing_pools()->Dict:
pools = find(POOL_OWNER_KEY)
json = {}
while pools.next():
result_pair = pools.value
storage_key = cast(bytes, result_pair[0])
pool_id = UInt256(storage_key[len(POOL_OWNER_KEY):])
if get(STATUS_KEY + pool_id).to_int() == 0:
json[pool_id.to_str()] = retrieve_pool(pool_id)
return json
@public
def list_pools_by_owner(pool_owner: UInt160) -> Dict:
pools = find(POOL_OWNER_KEY)
owner_pools: Dict = {}
while pools.next():
result_pair = pools.value
owner = cast(bytes, result_pair[1])
owner = UInt160(owner)
if pool_owner == owner:
storage_key = cast(bytes, result_pair[0])
pool_id = UInt256(storage_key[len(POOL_OWNER_KEY):])
pool_result:Dict = retrieve_pool(pool_id)
owner_pools[pool_id] = pool_result
return owner_pools
@public
def list_pools_by_player(player: UInt160)-> Dict:
pools = find(POOL_OWNER_KEY)
pools_by_player: Dict = {}
while pools.next():
result_pair = pools.value
storage_key = cast(bytes, result_pair[0])
pool_id = UInt256(storage_key[len(POOL_OWNER_KEY):])
position = get(PLAYER_POSITION_KEY + pool_id + player)
if len(position) != 0:
pool_result:Dict = retrieve_pool(pool_id)
pool_result['position'] = cast(int, position)
pools_by_player[pool_id] = pool_result
return pools_by_player
@public
def cancel_pool(pool_id: UInt256):
pool_owner = get(POOL_OWNER_KEY + pool_id)
if len(pool_owner) == 0:
raise Exception('Pool does not exist.')
pool_owner = UInt160(pool_owner)
if not check_witness(pool_owner):
raise Exception('No authorization.')
if get(STATUS_KEY + pool_id).to_int() != 0:
raise Exception('Pool already canceled or closed.')
token = UInt160(get(TOKEN_ACCEPTED_KEY + pool_id))
margin = get(MARGIN_KEY + pool_id).to_int()
players = find(PLAYER_POSITION_KEY + pool_id)
while players.next():
pair = players.value
storage_key = cast(bytes, pair[0])
address = UInt160(storage_key[len(PLAYER_POSITION_KEY + pool_id):])
transfer_token(token, executing_script_hash, address, margin, None)
put(STATUS_KEY + pool_id, 1)
@public
def bet(player: UInt160, pool_id: UInt256, bet_option: int):
if len(get(POOL_OWNER_KEY+pool_id)) == 0:
raise Exception("Pool does not exist.")
if not check_witness(player):
raise Exception("No authorization.")
if get(STATUS_KEY + pool_id).to_int() != 0:
raise Exception("Pool already canceled or closed.")
threshold = get(THRESHOLD_KEY + pool_id).to_int()
expiry = get(EXPIRY_KEY + pool_id).to_int()
if time > threshold or time > expiry:
raise Exception('Already passed betting threshold.')
if len(get(PLAYER_POSITION_KEY + pool_id + player)) != 0:
raise Exception("Position already settled.")
if bet_option != 1 and bet_option != 2:
raise Exception("Bet option must be either 1 (Long) or 2 (Short).")
margin: int = get(MARGIN_KEY + pool_id).to_int()
total_margin: int = get(TOTAL_MARGIN_KEY + pool_id).to_int()
token = UInt160(get(TOKEN_ACCEPTED_KEY + pool_id))
transfer_token(token, player, executing_script_hash, margin, None)
if bet_option == 2:
total_short: int = get(SHORT_POSITION_KEY + pool_id).to_int()
total_short += 1
put(SHORT_POSITION_KEY + pool_id, total_short)
else:
total_long: int = get(LONG_POSITION_KEY + pool_id).to_int()
total_long += 1
put(LONG_POSITION_KEY + pool_id, total_long)
total_margin += margin
put(TOTAL_MARGIN_KEY + pool_id, total_margin)
put(PLAYER_POSITION_KEY + pool_id + player, bet_option)
@public
def cancel_bet(player: UInt160, pool_id: UInt256):
if len(get(POOL_OWNER_KEY+pool_id)) == 0:
raise Exception("Pool does not exist.")
if not check_witness(player):
raise Exception('No authorization.')
if len(get(PLAYER_POSITION_KEY + pool_id + player)) == 0:
raise Exception('No position settled in current pool.')
if get(STATUS_KEY + pool_id).to_int() != 0:
raise Exception('Pool already canceled or closed.')
margin: int = get(MARGIN_KEY+pool_id).to_int()
total_margin: int = get(TOTAL_MARGIN_KEY+pool_id).to_int()
refund = margin - margin * CANCEL_PENALTY // 1000
total_margin -= margin
put(TOTAL_MARGIN_KEY + pool_id, total_margin)
position:int = get(PLAYER_POSITION_KEY + pool_id + player).to_int()
token = UInt160(get(TOKEN_ACCEPTED_KEY + pool_id))
transfer_token(token, executing_script_hash, player, refund, None)
if position == 2:
total_short: int = get(SHORT_POSITION_KEY + pool_id).to_int()
total_short -= 1
put(SHORT_POSITION_KEY + pool_id, total_short)
else:
total_long: int = get(LONG_POSITION_KEY + pool_id).to_int()
total_long -= 1
put(LONG_POSITION_KEY + pool_id, total_long)
delete(PLAYER_POSITION_KEY + pool_id + player)
@public
def oracle_call(pool_id: UInt256):
pool_owner = get(POOL_OWNER_KEY + pool_id)
if len(pool_owner) == 0:
raise Exception('Pool does not exist.')
pool_owner = UInt160(pool_owner)
if not check_witness(pool_owner):
raise Exception('No authorization.')
if get(STATUS_KEY + pool_id).to_int() != 0:
raise Exception('Pool already canceled or closed.')
expiry = get(EXPIRY_KEY + pool_id).to_int()
if time < expiry:
raise Exception('Not yet time to call on oracle.')
url = get(URL_KEY + pool_id).to_str()
json_filter = get(FILTER_KEY + pool_id).to_str()
Oracle.request(url, json_filter, 'store', pool_id, 100000000)
@public
def store(url: str, user_data: Any, code: int, result: bytes):
oracle_hash = ORACLE_ADDRESS.to_script_hash()
if calling_script_hash != oracle_hash:
raise Exception('No authorization')
pool_id = cast(UInt160, user_data)
spot = cast(str, result)
spot = spot[2 : -2]
if code != 0:
put(RAW_DATA_KEY + pool_id, 'Error')
else:
put(RAW_DATA_KEY + pool_id, spot)
def greater_equal(a: str, b: str)->bool:
length_a = len(a)
length_b = len(b)
decimal_a: int = 0
decimal_b: int = 0
i: int = 0
while i < length_a:
if a[i] == '.':
decimal_a = i
break
i += 1
if decimal_a == 0:
decimal_a = length_a
i = 0
while i < length_b:
if b[i] == '.':
decimal_b = i
break
i += 1
if decimal_b == 0:
decimal_b = length_b
if decimal_a > decimal_b:
return True
elif decimal_a < decimal_b:
return False
else:
for i in range(0, decimal_a):
if a[i] > b[i]:
return True
elif a[i] < b[i]:
return False
i+=1
for i in range(decimal_a+1, min(length_a, length_b)):
if a[i] > b[i]:
return True
elif a[i] < b[i]:
return False
if length_a >= length_b:
return True
else:
return False
return False
@public
def payout(pool_id: UInt256):
pool_owner = get(POOL_OWNER_KEY + pool_id)
if len(pool_owner) == 0:
raise Exception('Pool does not exist.')
pool_owner = UInt160(pool_owner)
if not check_witness(pool_owner):
raise Exception("No authorization.")
if get(STATUS_KEY + pool_id).to_int() != 0:
raise Exception('Pool already canceled or closed.')
spot = get(RAW_DATA_KEY + pool_id)
if len(spot) == 0:
raise Exception('Spot price not yet retrieved by Oracle nodes.')
strike = get(STRIKE_PRICE_KEY + pool_id)
spot = cast(str, spot)
strike = cast(str, strike)
if greater_equal(spot, strike):
result = 1
else:
result = 2
put(RESULT_KEY + pool_id, result)
owner = UInt160(get(OWNER_KEY))
token = UInt160(get(TOKEN_ACCEPTED_KEY + pool_id))
players = find(PLAYER_POSITION_KEY + pool_id)
total_short = get(SHORT_POSITION_KEY + pool_id).to_int()
total_long = get(LONG_POSITION_KEY + pool_id).to_int()
total_margin = get(TOTAL_MARGIN_KEY + pool_id).to_int()
# settles commission derived from players' margin pool
owner_commission = total_margin * OWNER_COMMISSION // 1000
transfer_token(token, executing_script_hash, owner, owner_commission, None)
pool_owner_commission = total_margin * POOL_OWNER_COMMISSION // 1000
transfer_token(token, executing_script_hash, pool_owner, pool_owner_commission, None)
total_margin -= (owner_commission + pool_owner_commission)
# settles commission derived from deposit
deposit = get(DEPOSIT_KEY + pool_id).to_int()
deposit_commission = deposit * DEPOSIT_COMMISSION // 1000
deposit -= deposit_commission
transfer_token(token, executing_script_hash, pool_owner, deposit, None)
if result == 2 and total_short != 0:
payoff = total_margin // total_short
while players.next():
pair = players.value
storage_key = cast(bytes, pair[0])
position = cast(int, pair[1])
if position == 2:
address = UInt160(storage_key[len(PLAYER_POSITION_KEY + pool_id):])
transfer_token(token, executing_script_hash, address, payoff, None)
if result == 1 and total_long != 0:
payoff = total_margin // total_long
while players.next():
pair = players.value
storage_key = cast(bytes, pair[0])
position = cast(int, pair[1])
if position == 1:
address = UInt160(storage_key[len(PLAYER_POSITION_KEY + pool_id):])
transfer_token(token, executing_script_hash, address, payoff, None)
# when the winning position is short of margin, the total margin is equally split between pool owner and contract owner
if (result == 2 and total_short == 0) or (result == 1 and total_long == 0):
payoff_to_pool_owner = total_margin // 2
payoff_to_owner = total_margin - payoff_to_pool_owner
transfer_token(token, executing_script_hash, pool_owner, payoff_to_pool_owner, None)
transfer_token(token, executing_script_hash, owner, payoff_to_owner, None)
put(STATUS_KEY + pool_id, 2)
def transfer_token(token_id: UInt160, from_address: UInt160, to_address: UInt160, amount: int, data: Any):
success: bool = call_contract(token_id, 'transfer', [from_address, to_address, amount, data])
if not success:
raise Exception('Transfer of token was not successful.')
@public
def onNEP17Payment(from_address: UInt160, amount: int, data: Any):
pass
#-----------------------
# CONTRACT MANAGEMENT
#-----------------------
@public
def _deploy(data: Any, update: bool):
if update:
return
if len(get(OWNER_KEY)) != 0:
return
put(OWNER_KEY, "NfT1orMtVTTDSPAJAGCutx6hFZkLKSr5dV".to_script_hash())
@public
def update(script: bytes, manifest: bytes):
owner = UInt160(get(OWNER_KEY))
if not check_witness(owner):
raise Exception('No authorization.')
update_contract(script, manifest)
@public
def destroy():
owner = UInt160(get(OWNER_KEY))
if not check_witness(owner):
raise Exception('No authorization.')
destroy_contract()