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tibet_lib.py
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tibet_lib.py
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import asyncio
import os
import sys
import time
import requests
from pathlib import Path
from typing import List
from blspy import AugSchemeMPL
from blspy import PrivateKey
from cdv.cmds.rpc import get_client
from cdv.cmds.sim_utils import SIMULATOR_ROOT_PATH
from chia.consensus.default_constants import DEFAULT_CONSTANTS
from chia.rpc.full_node_rpc_client import FullNodeRpcClient
from chia.rpc.wallet_rpc_client import WalletRpcClient
from chia.simulator.simulator_full_node_rpc_client import \
SimulatorFullNodeRpcClient
from chia.types.blockchain_format.coin import Coin
from chia.types.blockchain_format.program import INFINITE_COST
from chia.types.blockchain_format.program import Program
from chia.types.blockchain_format.program import SerializedProgram
from chia.types.blockchain_format.sized_bytes import bytes32
from chia.types.coin_spend import CoinSpend
from chia.types.condition_opcodes import ConditionOpcode
from chia.types.spend_bundle import SpendBundle
from chia.util.bech32m import bech32_decode
from chia.util.bech32m import bech32_encode
from chia.util.bech32m import convertbits
from chia.util.bech32m import decode_puzzle_hash
from chia.util.bech32m import encode_puzzle_hash
from chia.util.condition_tools import conditions_dict_for_solution
from chia.util.config import load_config
from chia.util.hash import std_hash
from chia.util.ints import uint16
from chia.util.ints import uint32
from chia.util.ints import uint64
from chia.wallet.cat_wallet.cat_utils import SpendableCAT
from chia.wallet.cat_wallet.cat_utils import construct_cat_puzzle
from chia.wallet.cat_wallet.cat_utils import get_innerpuzzle_from_puzzle
from chia.wallet.cat_wallet.cat_utils import \
unsigned_spend_bundle_for_spendable_cats
from chia.wallet.derive_keys import master_sk_to_wallet_sk_unhardened
from chia.wallet.lineage_proof import LineageProof
from chia.wallet.puzzles.cat_loader import CAT_MOD
from chia.wallet.puzzles.cat_loader import CAT_MOD_HASH
from chia.wallet.puzzles.p2_conditions import puzzle_for_conditions
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
DEFAULT_HIDDEN_PUZZLE_HASH
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
calculate_synthetic_secret_key
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
puzzle_for_pk
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
puzzle_for_synthetic_public_key
from chia.wallet.puzzles.p2_delegated_puzzle_or_hidden_puzzle import \
solution_for_delegated_puzzle
from chia.wallet.puzzles.singleton_top_layer_v1_1 import SINGLETON_LAUNCHER
from chia.wallet.puzzles.singleton_top_layer_v1_1 import \
SINGLETON_LAUNCHER_HASH
from chia.wallet.puzzles.singleton_top_layer_v1_1 import SINGLETON_MOD
from chia.wallet.puzzles.singleton_top_layer_v1_1 import SINGLETON_MOD_HASH
from chia.wallet.puzzles.singleton_top_layer_v1_1 import generate_launcher_coin
from chia.wallet.puzzles.singleton_top_layer_v1_1 import \
launch_conditions_and_coinsol
from chia.wallet.puzzles.singleton_top_layer_v1_1 import \
lineage_proof_for_coinsol
from chia.wallet.puzzles.singleton_top_layer_v1_1 import puzzle_for_singleton
from chia.wallet.puzzles.singleton_top_layer_v1_1 import solution_for_singleton
from chia.wallet.puzzles.tails import GenesisById
from chia.wallet.sign_coin_spends import sign_coin_spends
from chia.wallet.trading.offer import OFFER_MOD
from chia.wallet.trading.offer import OFFER_MOD_HASH
from chia.wallet.trading.offer import Offer
from chia.wallet.util.puzzle_compression import compress_object_with_puzzles
from chia.wallet.util.puzzle_compression import decompress_object_with_puzzles
from chia.wallet.util.puzzle_compression import lowest_best_version
from chia_rs import run_chia_program
from clvm.casts import int_to_bytes
from clvm import SExp
from leaflet_client import LeafletFullNodeRpcClient
def load_clvm_hex(
filename
) -> Program:
clvm_hex = open(filename, "r").read().strip()
assert len(clvm_hex) != 0
clvm_blob = bytes.fromhex(clvm_hex)
return SerializedProgram.from_bytes(clvm_blob).to_program()
ROUTER_MOD: Program = load_clvm_hex("clvm/router.clvm.hex")
PAIR_MOD: Program = load_clvm_hex("clvm/pair.clvm.hex")
LIQUIDITY_TAIL_MOD: Program = load_clvm_hex("clvm/liquidity_tail.clvm.hex")
P2_SINGLETON_FLASHLOAN_MOD: Program = load_clvm_hex("clvm/p2_singleton_flashloan.clvm.hex")
ROUTER_MOD_HASH = ROUTER_MOD.get_tree_hash()
PAIR_MOD_HASH = PAIR_MOD.get_tree_hash()
LIQUIDITY_TAIL_MOD_HASH = LIQUIDITY_TAIL_MOD.get_tree_hash()
P2_SINGLETON_FLASHLOAN_MOD_HASH = P2_SINGLETON_FLASHLOAN_MOD.get_tree_hash()
# can be overriden for all func calls
DEFAULT_RETURN_ADDRESS = "xch10d09t9eqpr2y34thcayk54sjz34qhyv3tmhrejjp6xxvj598sfds5z0xch"
def get_router_puzzle():
return ROUTER_MOD.curry(
PAIR_MOD_HASH,
SINGLETON_MOD_HASH,
P2_SINGLETON_FLASHLOAN_MOD_HASH,
CAT_MOD_HASH,
LIQUIDITY_TAIL_MOD_HASH,
OFFER_MOD_HASH,
993,
SINGLETON_LAUNCHER_HASH,
ROUTER_MOD_HASH
)
def get_pair_inner_puzzle(singleton_launcher_id, tail_hash, liquidity, xch_reserve, token_reserve):
return PAIR_MOD.curry(
PAIR_MOD_HASH,
(SINGLETON_MOD_HASH, (singleton_launcher_id, SINGLETON_LAUNCHER_HASH)),
P2_SINGLETON_FLASHLOAN_MOD_HASH,
CAT_MOD_HASH,
LIQUIDITY_TAIL_MOD_HASH,
OFFER_MOD_HASH,
tail_hash,
993,
liquidity,
xch_reserve,
token_reserve
)
def get_pair_puzzle(singleton_launcher_id, tail_hash, liquidity, xch_reserve, token_reserve):
return puzzle_for_singleton(
singleton_launcher_id,
get_pair_inner_puzzle(singleton_launcher_id, tail_hash, liquidity, xch_reserve, token_reserve)
)
def pair_liquidity_tail_puzzle(pair_launcher_id):
return LIQUIDITY_TAIL_MOD.curry(
(SINGLETON_MOD_HASH, (pair_launcher_id, SINGLETON_LAUNCHER_HASH))
)
# https://github.com/Chia-Network/chia-blockchain/blob/main/chia/wallet/puzzles/singleton_top_layer_v1_1.py
def pay_to_singleton_flashloan_puzzle(launcher_id: bytes32) -> Program:
return P2_SINGLETON_FLASHLOAN_MOD.curry(SINGLETON_MOD_HASH, launcher_id, SINGLETON_LAUNCHER_HASH)
# https://github.com/Chia-Network/chia-blockchain/blob/main/chia/wallet/puzzles/singleton_top_layer_v1_1.py
def solution_for_p2_singleton_flashloan(
p2_singleton_coin: Coin,
singleton_inner_puzhash: bytes32,
extra_conditions = []
) -> Program:
solution: Program = Program.to([singleton_inner_puzhash, p2_singleton_coin.name(), extra_conditions])
return solution
async def get_full_node_client(
chia_root,
leaflet_url
) -> FullNodeRpcClient:
node_client = None
if leaflet_url is not None:
# use leaflet by default
node_client = LeafletFullNodeRpcClient(leaflet_url)
else:
root_path = Path(chia_root)
config = load_config(root_path, "config.yaml")
self_hostname = config["self_hostname"]
rpc_port = config["full_node"]["rpc_port"]
node_client: FullNodeRpcClient = await FullNodeRpcClient.create(
self_hostname, uint16(rpc_port), root_path, config
)
await node_client.healthz()
return node_client
async def get_sim_full_node_client(
chia_root: str
) -> SimulatorFullNodeRpcClient:
root_path = Path(chia_root)
config = load_config(root_path, "config.yaml")
self_hostname = config["self_hostname"]
rpc_port = config["full_node"]["rpc_port"]
node_client: SimulatorFullNodeRpcClient = await SimulatorFullNodeRpcClient.create(
self_hostname, uint16(rpc_port), root_path, config
)
await node_client.healthz()
return node_client
async def get_wallet_client(
chia_root: str
) -> FullNodeRpcClient:
root_path = Path(chia_root)
config = load_config(root_path, "config.yaml")
self_hostname = config["self_hostname"]
rpc_port = config["wallet"]["rpc_port"]
wallet_client: WalletRpcClient = await WalletRpcClient.create(
self_hostname, uint16(rpc_port), root_path, config
)
await wallet_client.healthz()
return wallet_client
async def launch_router_from_coin(parent_coin, parent_coin_puzzle, fee=0):
comment: List[Tuple[str, str]] = [("tibet", "v1")]
conds, launcher_coin_spend = launch_conditions_and_coinsol(parent_coin, get_router_puzzle(), comment, 1)
if parent_coin.amount > fee + 1:
conds.append(
[
ConditionOpcode.CREATE_COIN,
parent_coin.puzzle_hash,
parent_coin.amount - 1 - fee,
]
)
if fee > 0:
conds.append([
ConditionOpcode.RESERVE_FEE,
fee
])
p2_coin_spend = CoinSpend(
parent_coin,
parent_coin_puzzle,
solution_for_delegated_puzzle(Program.to((1, conds)), [])
)
sb = SpendBundle(
[launcher_coin_spend, p2_coin_spend],
AugSchemeMPL.aggregate([])
)
launcher_id = launcher_coin_spend.coin.name().hex()
return launcher_id, sb
async def create_test_cat(token_amount, coin, coin_puzzle):
coin_id = coin.name()
tail = GenesisById.construct([coin_id])
tail_hash = tail.get_tree_hash()
cat_inner_puzzle = coin_puzzle
cat_puzzle = construct_cat_puzzle(CAT_MOD, tail_hash, cat_inner_puzzle)
cat_puzzle_hash = cat_puzzle.get_tree_hash()
cat_creation_tx = CoinSpend(
coin,
cat_inner_puzzle, # same as this coin's puzzle
solution_for_delegated_puzzle(Program.to((1, [
[ConditionOpcode.CREATE_COIN, cat_puzzle_hash, token_amount * 1000],
[ConditionOpcode.CREATE_COIN, coin.puzzle_hash, coin.amount - token_amount * 1000],
])), [])
)
cat_coin = Coin(
coin.name(), # parent
cat_puzzle_hash,
token_amount * 1000
)
cat_inner_solution = solution_for_delegated_puzzle(
Program.to((1, [
[ConditionOpcode.CREATE_COIN, 0, -113, tail, []],
[ConditionOpcode.CREATE_COIN, cat_inner_puzzle.get_tree_hash(), cat_coin.amount]
])), []
)
cat_eve_spend_bundle = unsigned_spend_bundle_for_spendable_cats(
CAT_MOD,
[
SpendableCAT(
cat_coin,
tail_hash,
cat_inner_puzzle,
cat_inner_solution,
limitations_program_reveal=tail,
)
],
)
cat_eve_spend = cat_eve_spend_bundle.coin_spends[0]
sb = SpendBundle(
[cat_creation_tx, cat_eve_spend],
AugSchemeMPL.aggregate([])
)
return tail_hash.hex(), sb
async def create_pair_from_coin(
coin,
coin_puzzle,
tail_hash,
router_launcher_id,
current_router_coin,
current_router_coin_creation_spend,
fee=0
):
lineage_proof = lineage_proof_for_coinsol(current_router_coin_creation_spend)
router_inner_puzzle = get_router_puzzle()
router_inner_solution = Program.to([
current_router_coin.name(),
tail_hash
])
router_singleton_puzzle = puzzle_for_singleton(router_launcher_id, router_inner_puzzle)
router_singleton_solution = solution_for_singleton(lineage_proof, current_router_coin.amount, router_inner_solution)
router_singleton_spend = CoinSpend(current_router_coin, router_singleton_puzzle, router_singleton_solution)
pair_launcher_coin = Coin(current_router_coin.name(), SINGLETON_LAUNCHER_HASH, 2)
pair_puzzle = get_pair_puzzle(
pair_launcher_coin.name(),
tail_hash,
0, 0, 0
)
comment: List[Tuple[str, str]] = []
# launch_conditions_and_coinsol would not work here since we spend a coin with amount 2
# and the solution says the amount is 1 *-*
pair_launcher_solution = Program.to(
[
pair_puzzle.get_tree_hash(),
1,
comment,
]
)
assert_launcher_announcement = [
ConditionOpcode.ASSERT_COIN_ANNOUNCEMENT,
std_hash(pair_launcher_coin.name() + pair_launcher_solution.get_tree_hash()),
]
pair_launcher_spend = CoinSpend(
pair_launcher_coin,
SINGLETON_LAUNCHER,
pair_launcher_solution,
)
# first condition is CREATE_COIN, which we took care of
# important to note: router also takes care of assert_launcher_announcement, but we need it to link the fund spend to the bundle
conds = []
conds.append([ConditionOpcode.CREATE_COIN, coin.puzzle_hash, coin.amount - fee - 2])
if fee > 0:
conds.append([ConditionOpcode.RESERVE_FEE, fee])
conds.append(assert_launcher_announcement)
fund_spend = CoinSpend(
coin,
coin_puzzle,
solution_for_delegated_puzzle(Program.to((1, conds)), [])
)
pair_launcher_id = Coin(current_router_coin.name(), SINGLETON_LAUNCHER_HASH, 2).name().hex()
sb = SpendBundle(
[router_singleton_spend, pair_launcher_spend, fund_spend],
AugSchemeMPL.aggregate([])
)
return pair_launcher_id, sb
async def sync_router(full_node_client, last_router_id):
new_pairs = []
coin_record = await full_node_client.get_coin_record_by_name(last_router_id)
if not coin_record.spent:
# hack
current_router_coin, creation_spend, _ = await sync_router(full_node_client, coin_record.coin.parent_coin_info)
return current_router_coin, creation_spend, []
router_puzzle_hash = get_router_puzzle().get_tree_hash()
while coin_record.spent:
creation_spend = await full_node_client.get_puzzle_and_solution(last_router_id, coin_record.spent_block_index)
_, conditions_dict, __ = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
if coin_record.coin.puzzle_hash != SINGLETON_LAUNCHER_HASH:
solution_program = creation_spend.solution.to_program()
tail_hash = [_ for _ in solution_program.as_iter()][-1].as_python()[-1]
for cwa in conditions_dict[ConditionOpcode.CREATE_COIN]:
new_puzzle_hash = cwa.vars[0]
new_amount = cwa.vars[1]
if new_amount == b"\x01": # CREATE_COIN with amount=1 -> router recreated
new_router_coin = Coin(last_router_id, new_puzzle_hash, 1)
last_router_id = new_router_coin.name()
elif new_amount == b"\x02": # CREATE_COIN with amount=2 -> pair launcher deployed
assert new_puzzle_hash == SINGLETON_LAUNCHER_HASH
pair_launcher_coin = Coin(creation_spend.coin.name(), new_puzzle_hash, 2)
pair_launcher_id = pair_launcher_coin.name()
new_pairs.append((tail_hash.hex(), pair_launcher_id.hex()))
else:
print("Someone did something extremely weird with the router - time to call the cops.")
sys.exit(1)
coin_record = await full_node_client.get_coin_record_by_name(last_router_id)
return coin_record.coin, creation_spend, new_pairs
async def get_spend_bundle_in_mempool(full_node_client, coin):
try:
parent_id_hex = "0x" + coin.parent_coin_info.hex()
r = requests.post("http://localhost:1337/get_mempool_item_by_parent_coin_info", json={
"request_url": full_node_client.leaflet_url + "get_all_mempool_items",
"parent_coin_info": parent_id_hex
})
j = r.json()
if j["item"] is None:
return None
return SpendBundle.from_json_dict(j["item"])
except:
return await get_spend_bundle_in_mempool_full_node(full_node_client, coin.name())
async def get_spend_bundle_in_mempool_full_node(full_node_client, coin_id):
items = await full_node_client.fetch("get_all_mempool_items", {})
for sb_id, d in items["mempool_items"].items():
sb = SpendBundle.from_json_dict(d["spend_bundle"])
for cs in sb.coin_spends:
if cs.coin.name() == coin_id:
return sb
return None
def get_coin_spend_from_sb(sb, coin_name):
if sb is None:
return None
for cs in sb.coin_spends:
if cs.coin.name() == coin_name:
return cs
return None
async def sync_pair(full_node_client, last_synced_coin_id, tail_hash):
state = {
"liquidity": 0,
"xch_reserve": 0,
"token_reserve": 0
}
coin_record = await full_node_client.get_coin_record_by_name(last_synced_coin_id)
last_synced_coin = coin_record.coin
creation_spend = None
if coin_record.coin.puzzle_hash == SINGLETON_LAUNCHER_HASH:
creation_spend = await full_node_client.get_puzzle_and_solution(last_synced_coin_id, coin_record.spent_block_index)
_, conditions_dict, __ = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
last_synced_coin = Coin(coin_record.coin.name(), conditions_dict[ConditionOpcode.CREATE_COIN][0].vars[0], 1)
if not coin_record.spent:
# hack
current_pair_coin, creation_spend, state, sb_to_aggregate, last_synced_pair_id_on_blockchain = await sync_pair(full_node_client, coin_record.coin.parent_coin_info, tail_hash)
return current_pair_coin, creation_spend, state, sb_to_aggregate, last_synced_pair_id_on_blockchain
creation_spend = None
while coin_record.spent:
creation_spend = await full_node_client.get_puzzle_and_solution(last_synced_coin_id, coin_record.spent_block_index)
_, conditions_dict, __ = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
for cwa in conditions_dict.get(ConditionOpcode.CREATE_COIN, []):
new_puzzle_hash = cwa.vars[0]
new_amount = cwa.vars[1]
if new_amount == b"\x01": # CREATE_COIN with amount=1 -> pair recreation
last_synced_coin = Coin(last_synced_coin_id, new_puzzle_hash, 1)
last_synced_coin_id = last_synced_coin.name()
coin_record = await full_node_client.get_coin_record_by_name(last_synced_coin_id)
last_synced_pair_id_on_blockchain = last_synced_coin_id
# mempool - watch this aggregation!
last_coin_on_chain = coin_record.coin
last_coin_on_chain_id = last_coin_on_chain.name()
sb = await get_spend_bundle_in_mempool(full_node_client, last_coin_on_chain)
sb_to_aggregate = sb
coin_spend = get_coin_spend_from_sb(sb, last_coin_on_chain_id)
while coin_spend != None:
creation_spend = coin_spend
_, conditions_dict, __ = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
for cwa in conditions_dict.get(ConditionOpcode.CREATE_COIN, []):
new_puzzle_hash = cwa.vars[0]
new_amount = cwa.vars[1]
if new_amount == b"\x01": # CREATE_COIN with amount=1 -> pair recreation
last_synced_coin = Coin(last_synced_coin_id, new_puzzle_hash, 1)
last_synced_coin_id = last_synced_coin.name()
coin_spend = get_coin_spend_from_sb(sb, last_synced_coin_id)
if creation_spend.coin.puzzle_hash == SINGLETON_LAUNCHER_HASH:
return last_synced_coin, creation_spend, state, None, last_synced_coin.name()
creation_spend_inner_puzzle_args = creation_spend.puzzle_reveal.uncurry()[1].at("rf").uncurry()[1]
liquidity = creation_spend_inner_puzzle_args.at("r" * 8 + "f").as_int()
xch_reserve = creation_spend_inner_puzzle_args.at("r" * 9 + "f").as_int()
token_reserve = creation_spend_inner_puzzle_args.at("r" * 10 + "f").as_int()
creation_spend_inner_solution = creation_spend.solution.to_program().at("rrf")
action = creation_spend_inner_solution.at("rf").as_int()
params = creation_spend_inner_solution.at("rrf")
if action == 0: # deposit liquidity
token_amount = params.at("f").as_int()
if liquidity == 0:
xch_amount = params.at("rrrf").as_int()
liquidity = token_amount
xch_reserve = xch_amount
token_reserve = token_amount
else:
liquidity += token_amount * liquidity // token_reserve
xch_reserve += token_amount * xch_reserve // token_reserve
token_reserve += token_amount
elif action == 1: # remove liquidity
liquidity_tokens_amount = params.at("f").as_int()
xch_reserve -= liquidity_tokens_amount * xch_reserve // liquidity
token_reserve -= liquidity_tokens_amount * token_reserve // liquidity
liquidity -= liquidity_tokens_amount
elif action == 2: # xch to token
xch_amount = params.at("f").as_int()
token_reserve -= (token_reserve * xch_amount * 993) // (1000 * xch_reserve + 993 * xch_amount)
xch_reserve += xch_amount
elif action == 3: # token to xch
token_amount = params.at("f").as_int()
xch_reserve -= (xch_reserve * token_amount * 993) // (1000 * token_reserve + 993 * token_amount)
token_reserve += token_amount
state = {
"liquidity": liquidity,
"xch_reserve": xch_reserve,
"token_reserve": token_reserve
}
return last_synced_coin, creation_spend, state, sb_to_aggregate, last_synced_pair_id_on_blockchain
async def get_pair_reserve_info(
full_node_client,
pair_launcher_id,
pair_coin,
token_tail_hash,
creation_spend,
cached_sb
):
puzzle_announcements_asserts = []
_, conditions_dict, __ = conditions_dict_for_solution(
creation_spend.puzzle_reveal,
creation_spend.solution,
INFINITE_COST
)
for cwa in conditions_dict.get(ConditionOpcode.ASSERT_PUZZLE_ANNOUNCEMENT, []):
puzzle_announcements_asserts.append(cwa.vars[0])
if len(puzzle_announcements_asserts) == 0:
return None, None, None # new pair
p2_singleton_puzzle = pay_to_singleton_flashloan_puzzle(pair_launcher_id)
p2_singleton_puzzle_hash = p2_singleton_puzzle.get_tree_hash()
p2_singleton_cat_puzzle = construct_cat_puzzle(CAT_MOD, token_tail_hash, p2_singleton_puzzle)
p2_singleton_cat_puzzle_hash = p2_singleton_cat_puzzle.get_tree_hash()
spends = []
if cached_sb is None:
coin_record = await full_node_client.get_coin_record_by_name(pair_coin.name())
block_record = await full_node_client.get_block_record_by_height(coin_record.confirmed_block_index)
spends = await full_node_client.get_block_spends(block_record.header_hash)
else:
spends = cached_sb.coin_spends
xch_reserve_coin = None
token_reserve_coin = None
token_reserve_lineage_proof = []
for spend in spends:
_, conditions_dict, __ = conditions_dict_for_solution(
spend.puzzle_reveal,
spend.solution,
INFINITE_COST
)
for cwa in conditions_dict.get(ConditionOpcode.CREATE_PUZZLE_ANNOUNCEMENT, []):
ann_hash = std_hash(spend.coin.puzzle_hash + cwa.vars[0])
if ann_hash in puzzle_announcements_asserts:
amount = 0
for cwa2 in conditions_dict[ConditionOpcode.CREATE_COIN]:
if cwa2.vars[0] in [p2_singleton_puzzle_hash, p2_singleton_cat_puzzle_hash]:
amount = SExp.to(cwa2.vars[1]).as_int()
if spend.coin.puzzle_hash == OFFER_MOD_HASH:
xch_reserve_coin = Coin(spend.coin.name(), p2_singleton_puzzle_hash, amount)
else: # OFFER_MOD_HASH but wrapped in CAT puzzle
token_reserve_coin = Coin(spend.coin.name(), p2_singleton_cat_puzzle_hash, amount)
token_reserve_lineage_proof = [
spend.coin.parent_coin_info,
OFFER_MOD_HASH,
spend.coin.amount
]
break
return xch_reserve_coin, token_reserve_coin, token_reserve_lineage_proof
def get_announcements_asserts_for_notarized_payments(not_payments, puzzle_hash=OFFER_MOD_HASH):
_, conditions_dict, __ = conditions_dict_for_solution(
OFFER_MOD,
not_payments,
INFINITE_COST
)
announcement_asserts = []
for cwa in conditions_dict.get(ConditionOpcode.CREATE_PUZZLE_ANNOUNCEMENT, []): #cwa = condition with args
announcement_asserts.append([
ConditionOpcode.ASSERT_PUZZLE_ANNOUNCEMENT,
std_hash(puzzle_hash + cwa.vars[0])
])
return announcement_asserts
async def respond_to_deposit_liquidity_offer(
pair_launcher_id,
current_pair_coin,
creation_spend,
token_tail_hash,
pair_liquidity,
pair_xch_reserve,
pair_token_reserve,
offer_str,
last_xch_reserve_coin,
last_token_reserve_coin,
last_token_reserve_lineage_proof, # coin_parent_coin_info, inner_puzzle_hash, amount
return_address = DEFAULT_RETURN_ADDRESS
):
# 1. Detect ephemeral coins (those created by the offer that we're allowed to use)
offer = Offer.from_bech32(offer_str)
offer_spend_bundle = offer.to_spend_bundle()
offer_coin_spends = offer_spend_bundle.coin_spends
eph_xch_coin = None
eph_token_coin = None
eph_token_coin_creation_spend = None # needed when spending eph_token_coin since it's a CAT
announcement_asserts = [] # assert everything when the liquidity cat is minted
ephemeral_token_coin_puzzle = construct_cat_puzzle(CAT_MOD, token_tail_hash, OFFER_MOD)
ephemeral_token_coin_puzzle_hash = ephemeral_token_coin_puzzle.get_tree_hash()
cs_from_initial_offer = [] # all valid coin spends (i.e., not 'hints' for offered assets or coins)
for coin_spend in offer_coin_spends:
if coin_spend.coin.parent_coin_info == b"\x00" * 32: # 'hint' for offer requested coin (liquidity CAT)
continue
cs_from_initial_offer.append(coin_spend)
_, conditions_dict, __ = conditions_dict_for_solution(
coin_spend.puzzle_reveal,
coin_spend.solution,
INFINITE_COST
)
# is this spend creating an ephemeral coin?
for cwa in conditions_dict.get(ConditionOpcode.CREATE_COIN, []):
puzzle_hash = cwa.vars[0]
amount = SExp.to(cwa.vars[1]).as_int()
if puzzle_hash == OFFER_MOD_HASH:
eph_xch_coin = Coin(coin_spend.coin.name(), puzzle_hash, amount)
if puzzle_hash == ephemeral_token_coin_puzzle_hash:
eph_token_coin = Coin(coin_spend.coin.name(), puzzle_hash, amount)
eph_token_coin_creation_spend = coin_spend
# is there any announcement that we'll need to assert?
for cwa in conditions_dict.get(ConditionOpcode.CREATE_COIN_ANNOUNCEMENT, []): #cwa = condition with args
announcement_asserts.append([
ConditionOpcode.ASSERT_COIN_ANNOUNCEMENT,
std_hash(coin_spend.coin.name() + cwa.vars[0])
])
# 2. Math stuff
new_liquidity_token_amount = 0
for k, v in offer.get_requested_amounts().items():
new_liquidity_token_amount = v
deposited_token_amount = new_liquidity_token_amount
if pair_token_reserve != 0:
deposited_token_amount = eph_token_coin.amount * pair_liquidity // pair_token_reserve
deposited_xch_amount = eph_xch_coin.amount - new_liquidity_token_amount
if pair_xch_reserve != 0:
deposited_xch_amount = deposited_token_amount * pair_xch_reserve // pair_token_reserve
if deposited_xch_amount > eph_xch_coin.amount or deposited_token_amount > eph_token_coin.amount:
print(f"Uh... to few XCH/tokens :(")
return None
# 3. spend the token ephemeral coin to create the token reserve coin
p2_singleton_puzzle = pay_to_singleton_flashloan_puzzle(pair_launcher_id)
p2_singleton_puzzle_cat = construct_cat_puzzle(CAT_MOD, token_tail_hash, p2_singleton_puzzle)
eph_token_coin_notarized_payments = []
eph_token_coin_notarized_payments.append(
Program.to([
current_pair_coin.name(),
[p2_singleton_puzzle.get_tree_hash(), deposited_token_amount + pair_token_reserve]
])
)
# send extra tokens to return address
if eph_token_coin.amount > deposited_token_amount:
not_payment = Program.to([
current_pair_coin.name(),
[decode_puzzle_hash(return_address), eph_token_coin.amount - deposited_token_amount]
])
eph_token_coin_notarized_payments.append(not_payment)
for ann_assert in get_announcements_asserts_for_notarized_payments([not_payment], eph_token_coin.puzzle_hash):
announcement_asserts.append(ann_assert)
eph_token_coin_inner_solution = Program.to(eph_token_coin_notarized_payments)
spendable_cats_for_token_reserve = []
spendable_cats_for_token_reserve.append(
SpendableCAT(
eph_token_coin,
token_tail_hash,
OFFER_MOD,
eph_token_coin_inner_solution,
lineage_proof=LineageProof(
eph_token_coin_creation_spend.coin.parent_coin_info,
get_innerpuzzle_from_puzzle(eph_token_coin_creation_spend.puzzle_reveal).get_tree_hash(),
eph_token_coin_creation_spend.coin.amount
)
)
)
pair_singleton_inner_puzzle = get_pair_inner_puzzle(
pair_launcher_id,
token_tail_hash,
pair_liquidity,
pair_xch_reserve,
pair_token_reserve
)
if last_token_reserve_coin is not None:
spendable_cats_for_token_reserve.append(
SpendableCAT(
last_token_reserve_coin,
token_tail_hash,
p2_singleton_puzzle,
solution_for_p2_singleton_flashloan(
last_token_reserve_coin, pair_singleton_inner_puzzle.get_tree_hash()
),
lineage_proof=LineageProof(
last_token_reserve_lineage_proof[0],
last_token_reserve_lineage_proof[1],
last_token_reserve_lineage_proof[2]
)
)
)
token_reserve_creation_spend_bundle = unsigned_spend_bundle_for_spendable_cats(
CAT_MOD, spendable_cats_for_token_reserve
)
token_reserve_creation_spends = token_reserve_creation_spend_bundle.coin_spends
# 4. spend the xch ephemeral coin
liquidity_cat_tail = pair_liquidity_tail_puzzle(pair_launcher_id)
liquidity_cat_tail_hash = liquidity_cat_tail.get_tree_hash()
liquidity_cat_mint_coin_tail_solution = Program.to([pair_singleton_inner_puzzle.get_tree_hash()])
# output everything from solution
# this is usually not safe to use, but in this case we don't really care since we are accepting an offer
# that is asking for liquidity tokens - it's kind of circular; if we don't get out tokens,
# the transaction doesn't go through because a puzzle announcemet from the parents of eph coins would fail
liquidity_cat_mint_coin_inner_puzzle = Program.from_bytes(b"\x01")
liquidity_cat_mint_coin_inner_puzzle_hash = liquidity_cat_mint_coin_inner_puzzle.get_tree_hash()
liquidity_cat_mint_coin_puzzle = construct_cat_puzzle(
CAT_MOD, liquidity_cat_tail_hash, liquidity_cat_mint_coin_inner_puzzle
)
liquidity_cat_mint_coin_puzzle_hash = liquidity_cat_mint_coin_puzzle.get_tree_hash()
eph_xch_coin_settlement_things = [
Program.to([
current_pair_coin.name(),
[p2_singleton_puzzle.get_tree_hash(), pair_xch_reserve + deposited_xch_amount]
]),
Program.to([
current_pair_coin.name(),
[liquidity_cat_mint_coin_puzzle_hash, new_liquidity_token_amount]
])
]
# send extra XCH to return address
if eph_xch_coin.amount > deposited_xch_amount + new_liquidity_token_amount:
not_payment = Program.to([
current_pair_coin.name(),
[decode_puzzle_hash(return_address), eph_xch_coin.amount - deposited_xch_amount - new_liquidity_token_amount]
])
eph_xch_coin_settlement_things.append(not_payment)
for ann_assert in get_announcements_asserts_for_notarized_payments([not_payment]):
announcement_asserts.append(ann_assert)
eph_xch_coin_solution = Program.to(eph_xch_coin_settlement_things)
eph_xch_coin_spend = CoinSpend(eph_xch_coin, OFFER_MOD, eph_xch_coin_solution)
# 5. Re-create the pair singleton (spend it)
pair_singleton_puzzle = get_pair_puzzle(
pair_launcher_id,
token_tail_hash,
pair_liquidity,
pair_xch_reserve,
pair_token_reserve
)
pair_singleton_inner_solution = Program.to([
Program.to([
current_pair_coin.name(),
b"\x00" * 32 if last_xch_reserve_coin is None else last_xch_reserve_coin.name(),
b"\x00" * 32 if last_token_reserve_coin is None else last_token_reserve_coin.name(),
]),
0,
Program.to([
deposited_token_amount,
liquidity_cat_mint_coin_inner_puzzle_hash,
eph_xch_coin.name(), # parent of liquidity cat mint coin
deposited_xch_amount
])
])
lineage_proof = lineage_proof_for_coinsol(creation_spend)
pair_singleton_solution = solution_for_singleton(
lineage_proof, current_pair_coin.amount, pair_singleton_inner_solution
)
pair_singleton_spend = CoinSpend(current_pair_coin, pair_singleton_puzzle, pair_singleton_solution)
# 6. Spend liquidity cat mint coin
liquidity_cat_mint_coin = Coin(
eph_xch_coin.name(),
liquidity_cat_mint_coin_puzzle_hash,
new_liquidity_token_amount
)
output_conditions = announcement_asserts
output_conditions.append([ConditionOpcode.CREATE_COIN, OFFER_MOD_HASH, new_liquidity_token_amount])
liquidity_cat_mint_coin_tail_puzzle = pair_liquidity_tail_puzzle(pair_launcher_id)
output_conditions.append([
ConditionOpcode.CREATE_COIN,
0,
-113,
liquidity_cat_mint_coin_tail_puzzle,
liquidity_cat_mint_coin_tail_solution
])
# also assert the XCH ephemeral coin announcement
# specifically, for the payment made to mint liquidity tokens
eph_xch_settlement_announcement = eph_xch_coin_settlement_things[-1].get_tree_hash()
output_conditions.append([
ConditionOpcode.ASSERT_PUZZLE_ANNOUNCEMENT,
std_hash(eph_xch_coin.puzzle_hash + eph_xch_settlement_announcement)
])
liquidity_cat_mint_coin_solution = Program.to([
output_conditions,
[],
liquidity_cat_mint_coin.name(),
[liquidity_cat_mint_coin.parent_coin_info, liquidity_cat_mint_coin.puzzle_hash, new_liquidity_token_amount],
[liquidity_cat_mint_coin.parent_coin_info, liquidity_cat_mint_coin_inner_puzzle_hash, new_liquidity_token_amount],
[],
[]
])
liquidity_cat_mint_coin_spend = CoinSpend(
liquidity_cat_mint_coin,
liquidity_cat_mint_coin_puzzle,
liquidity_cat_mint_coin_solution
)
# 7. Ephemeral liquidity cat
ephemeral_liquidity_cat_coin_puzzle = construct_cat_puzzle(CAT_MOD, liquidity_cat_tail_hash, OFFER_MOD)
ephemeral_liquidity_cat_coin_puzzle_hash = ephemeral_liquidity_cat_coin_puzzle.get_tree_hash()
ephemeral_liquidity_cat = Coin(
liquidity_cat_mint_coin.name(),
ephemeral_liquidity_cat_coin_puzzle_hash,
new_liquidity_token_amount
)
notarized_payment = offer.get_requested_payments()[liquidity_cat_tail_hash][0]
nonce = notarized_payment.nonce
memos = notarized_payment.memos
ephemeral_liquidity_cat_inner_solution = Program.to([
Program.to([
nonce,
[memos[0], new_liquidity_token_amount, memos]
])
])
ephemeral_liquidity_cat_spend_bundle = unsigned_spend_bundle_for_spendable_cats(
CAT_MOD,
[
SpendableCAT(
ephemeral_liquidity_cat,
liquidity_cat_tail_hash,
OFFER_MOD,
ephemeral_liquidity_cat_inner_solution,
lineage_proof=LineageProof(
liquidity_cat_mint_coin.parent_coin_info,
liquidity_cat_mint_coin_inner_puzzle_hash,
new_liquidity_token_amount
)
)
],
)
ephemeral_liquidity_cat_spend = ephemeral_liquidity_cat_spend_bundle.coin_spends[0]
# 8. Right now, the tx is valid, but the fee is negative - spend the last (previous) xch reserve coin and we're done!
last_xch_reserve_spend_maybe = []
if last_xch_reserve_coin != None:
last_xch_reserve_coin_puzzle = p2_singleton_puzzle
last_xch_reserve_coin_solution = solution_for_p2_singleton_flashloan(
last_xch_reserve_coin, pair_singleton_inner_puzzle.get_tree_hash()
)
last_xch_reserve_spend_maybe.append(
CoinSpend(last_xch_reserve_coin, last_xch_reserve_coin_puzzle, last_xch_reserve_coin_solution)
)
sb = SpendBundle(
[
eph_xch_coin_spend,
pair_singleton_spend,
liquidity_cat_mint_coin_spend,
ephemeral_liquidity_cat_spend
] + token_reserve_creation_spends + cs_from_initial_offer + last_xch_reserve_spend_maybe,
offer_spend_bundle.aggregated_signature
)
return sb
async def respond_to_remove_liquidity_offer(
pair_launcher_id,
current_pair_coin,
creation_spend,
token_tail_hash,
pair_liquidity,
pair_xch_reserve,
pair_token_reserve,
offer_str,
last_xch_reserve_coin,
last_token_reserve_coin,
last_token_reserve_lineage_proof, # coin_parent_coin_info, inner_puzzle_hash, amount
return_address = DEFAULT_RETURN_ADDRESS
):
# 1. detect offered ephemeral coin (ephemeral liquidity coin, created the offer so we can use it)
offer = Offer.from_bech32(offer_str)
offer_spend_bundle = offer.to_spend_bundle()
offer_coin_spends = offer_spend_bundle.coin_spends
eph_liquidity_coin = None
eph_liquidity_coin_creation_spend = None # needed when spending eph_liquidity_coin since it's a CAT
announcement_asserts = [] # assert everything when the old XCH reserve is spent
liquidity_cat_tail = pair_liquidity_tail_puzzle(pair_launcher_id)
liquidity_cat_tail_hash = liquidity_cat_tail.get_tree_hash()
eph_liquidity_coin_puzzle = construct_cat_puzzle(CAT_MOD, liquidity_cat_tail_hash, OFFER_MOD)
eph_liquidity_coin_puzzle_hash = eph_liquidity_coin_puzzle.get_tree_hash()
cs_from_initial_offer = [] # all valid coin spends (i.e., not 'hints' for offered assets or coins)
for coin_spend in offer_coin_spends:
if coin_spend.coin.parent_coin_info == b"\x00" * 32: # 'hint' for offer requested coin