Transaction #18598
| Hash | 816c8305992740f4b53fcfbabeaf908a287cea1abf7517a625e6d0fd70ede9c4 |
| Status | Success |
| Timestamp | 251 days ago - 8/20/2023, 8:31:58 AM UTC+0 |
| Block | 18598 |
| Stamps Used | 384 |
| Burned Fee | 0.02272189 TAU |
| From | c674a8a398fb81765277f77fc11464496dae94632de18eea1d69bf0c7894ad03 |
| Contract Name | submission |
| Function Name | submit_contract |
Additional Info
| Nonce | 0 |
| Processor | c674a8a398fb81765277f77fc11464496dae94632de18eea1d69bf0c7894ad03 |
| Signature | 4a9c42f9d39b0514af3a07867ca466cacb289c69efbffa5b097ea1fe63255fbdea51bacd545e91d8a166c8fff834cebb6d35af765d5aa173a9dc1154386d1101 |
| Stamps Supplied | 777 |
| Stamps per TAU | 169 |
Kwargs
| code | I = importlib token_interface = [I.Func('transfer', args=('amount', 'to')), I.Func( 'approve', args=('amount', 'to')), I.Func('transfer_from', args=( 'amount', 'to', 'main_account'))] pools = Hash(default_value=0) lp_points = Hash(default_value=0) config = Hash(default_value=0) fee_rewards = Hash(default_value=0) @construct def seed(): config['owner'] = ctx.caller @export def create_pool(tokens: list, fee: float): assert len(tokens) == 2, 'You need to have 2 tokens in a pool' for i in range(len(tokens)): token = tokens[i] token_module = I.import_module(token['contract']) assert I.enforce_interface(token_module, token_interface ), 'Invalid token interface!' assert token['amount'] > 0, 'Amount must be greater than 0' token_module.transfer_from(amount=token['amount'], to=ctx.this, main_account=ctx.caller) pool_id = len(pools) pool = {'tokens': tokens, 'total_lp_points': 100, 'fee': fee, 'price': tokens[0]['amount'] / tokens[1]['amount']} pools[pool_id] = pool lp_points[pool_id, ctx.caller] = 100 return pool_id @export def add_liquidity(pool_id: int, tokens: list): pool = pools[pool_id] assert len(tokens) == 2, 'You need to have 2 tokens in a pool' for i in range(len(tokens)): token = tokens[i] assert pool['tokens'][i]['contract'] == token['contract'], 'Invalid token contract' assert token['amount'] > 0, 'Amount must be greater than 0' token_module = I.import_module(token['contract']) token_module.transfer_from(amount=token['amount'], to=ctx.this, main_account=ctx.caller) pool['tokens'][i]['amount'] += token['amount'] pool['total_lp_points'] += tokens[0]['amount'] / pool['price'] * pool['total_lp_points'] / pool['tokens'][0]['amount'] lp_points[pool_id, ctx.caller] += tokens[0]['amount'] / pool['price'] * pool['total_lp_points'] / pool['tokens'][0]['amount'] pools[pool_id] = pool return tokens[0]['amount'] / pool['price'] * pool['total_lp_points'] / pool['tokens'][0]['amount'] @export def remove_liquidity(pool_id: int, amount: float): pool = pools[pool_id] assert amount > 0, 'Amount must be greater than 0' lp_points[pool_id, ctx.caller] -= amount pool['total_lp_points'] -= amount for i in range(len(pool['tokens'])): token = pool['tokens'][i] token_module = I.import_module(token['contract']) token_module.transfer(amount=amount * token['amount'] / pool['total_lp_points'], to=ctx.caller) pool['tokens'][i]['amount'] -= amount * token['amount'] / pool['total_lp_points'] pools[pool_id] = pool return amount @export def swap(pool_id: int, token_from: str, token_to: str, amount: float, max_slippage: float=10): # 1/5 of fee goes to the config owner and 4/5 goes to the liquidity providers of the pool # the fee is taken from the output amount # loop though all the liquidity providers and add the fee to fee_rewards fee_rewards[pool_id, account] += fee # assert if max_slippage is exceeded pool = pools[pool_id] assert token_from in [token['contract'] for token in pool['tokens']], 'Invalid token_from' assert token_to in [token['contract'] for token in pool['tokens']], 'Invalid token_to' assert amount > 0, 'Amount must be greater than 0' assert max_slippage > 0, 'Max slippage must be greater than 0' assert max_slippage < 50, 'Max slippage must be less than 50' token_from_index = None token_to_index = None for i in range(len(pool['tokens'])): if pool['tokens'][i]['contract'] == token_from: token_from_index = i if pool['tokens'][i]['contract'] == token_to: token_to_index = i token_module_from = I.import_module(token_from) token_module_to = I.import_module(token_to) token_amount_from = amount token_amount_to = amount * pool['tokens'][token_to_index]['amount'] / pool['tokens'][token_from_index]['amount'] # Calculate the fee fee = token_amount_to * pool['fee'] / 100 fee_owner = fee / 5 fee_liquidity_providers = fee - fee_owner # Transfer tokens from the caller to the contract token_module_from.transfer_from(amount=token_amount_from, to=ctx.this, main_account=ctx.caller) # Calculate slippage expected_token_amount_to = token_amount_to - fee_liquidity_providers min_token_amount_to = expected_token_amount_to * (100 - max_slippage) / 100 # Transfer tokens to the caller token_module_to.transfer(amount=token_amount_to - fee_liquidity_providers, to=ctx.caller) # Distribute fee to the owner and liquidity providers fee_rewards[pool_id, config['owner']] += fee_owner for account in lp_points.keys(): if account[0] == pool_id: fee_rewards[pool_id, account[1]] += fee_liquidity_providers / pool['total_lp_points'] * lp_points[account] return token_amount_to - fee_liquidity_providers @export def get_pool(pool_id: int): return pools[pool_id] @export def get_lp_points(pool_id: int, account: str): return lp_points[pool_id, account] @export def get_config(): return config |
| name | con_test_swap1 |
State Changes
| Contract | con_test_swap1 |
| Variable | __code__ |
| New Value | I = importlib token_interface = [I.Func('transfer', args=('amount', 'to')), I.Func( 'approve', args=('amount', 'to')), I.Func('transfer_from', args=( 'amount', 'to', 'main_account'))] __pools = Hash(default_value=0, contract='con_test_swap1', name='pools') __lp_points = Hash(default_value=0, contract='con_test_swap1', name='lp_points' ) __config = Hash(default_value=0, contract='con_test_swap1', name='config') __fee_rewards = Hash(default_value=0, contract='con_test_swap1', name= 'fee_rewards') def ____(): __config['owner'] = ctx.caller @__export('con_test_swap1') def create_pool(tokens: list, fee: float): assert len(tokens) == 2, 'You need to have 2 tokens in a pool' for i in range(len(tokens)): token = tokens[i] token_module = I.import_module(token['contract']) assert I.enforce_interface(token_module, token_interface ), 'Invalid token interface!' assert token['amount'] > 0, 'Amount must be greater than 0' token_module.transfer_from(amount=token['amount'], to=ctx.this, main_account=ctx.caller) pool_id = len(__pools) pool = {'tokens': tokens, 'total_lp_points': 100, 'fee': fee, 'price': tokens[0]['amount'] / tokens[1]['amount']} __pools[pool_id] = pool __lp_points[pool_id, ctx.caller] = 100 return pool_id @__export('con_test_swap1') def add_liquidity(pool_id: int, tokens: list): pool = __pools[pool_id] assert len(tokens) == 2, 'You need to have 2 tokens in a pool' for i in range(len(tokens)): token = tokens[i] assert pool['tokens'][i]['contract'] == token['contract' ], 'Invalid token contract' assert token['amount'] > 0, 'Amount must be greater than 0' token_module = I.import_module(token['contract']) token_module.transfer_from(amount=token['amount'], to=ctx.this, main_account=ctx.caller) pool['tokens'][i]['amount'] += token['amount'] pool['total_lp_points'] += tokens[0]['amount'] / pool['price'] * pool[ 'total_lp_points'] / pool['tokens'][0]['amount'] __lp_points[pool_id, ctx.caller] += tokens[0]['amount'] / pool['price' ] * pool['total_lp_points'] / pool['tokens'][0]['amount'] __pools[pool_id] = pool return tokens[0]['amount'] / pool['price'] * pool['total_lp_points' ] / pool['tokens'][0]['amount'] @__export('con_test_swap1') def remove_liquidity(pool_id: int, amount: float): pool = __pools[pool_id] assert amount > 0, 'Amount must be greater than 0' __lp_points[pool_id, ctx.caller] -= amount pool['total_lp_points'] -= amount for i in range(len(pool['tokens'])): token = pool['tokens'][i] token_module = I.import_module(token['contract']) token_module.transfer(amount=amount * token['amount'] / pool[ 'total_lp_points'], to=ctx.caller) pool['tokens'][i]['amount'] -= amount * token['amount'] / pool[ 'total_lp_points'] __pools[pool_id] = pool return amount @__export('con_test_swap1') def swap(pool_id: int, token_from: str, token_to: str, amount: float, max_slippage: float=10): pool = __pools[pool_id] assert token_from in [token['contract'] for token in pool['tokens'] ], 'Invalid token_from' assert token_to in [token['contract'] for token in pool['tokens'] ], 'Invalid token_to' assert amount > 0, 'Amount must be greater than 0' assert max_slippage > 0, 'Max slippage must be greater than 0' assert max_slippage < 50, 'Max slippage must be less than 50' token_from_index = None token_to_index = None for i in range(len(pool['tokens'])): if pool['tokens'][i]['contract'] == token_from: token_from_index = i if pool['tokens'][i]['contract'] == token_to: token_to_index = i token_module_from = I.import_module(token_from) token_module_to = I.import_module(token_to) token_amount_from = amount token_amount_to = amount * pool['tokens'][token_to_index]['amount'] / pool[ 'tokens'][token_from_index]['amount'] fee = token_amount_to * pool['fee'] / 100 fee_owner = fee / 5 fee_liquidity_providers = fee - fee_owner token_module_from.transfer_from(amount=token_amount_from, to=ctx.this, main_account=ctx.caller) expected_token_amount_to = token_amount_to - fee_liquidity_providers min_token_amount_to = expected_token_amount_to * (100 - max_slippage) / 100 token_module_to.transfer(amount=token_amount_to - fee_liquidity_providers, to=ctx.caller) __fee_rewards[pool_id, __config['owner']] += fee_owner for account in __lp_points.keys(): if account[0] == pool_id: __fee_rewards[pool_id, account[1] ] += fee_liquidity_providers / pool['total_lp_points' ] * __lp_points[account] return token_amount_to - fee_liquidity_providers @__export('con_test_swap1') def get_pool(pool_id: int): return __pools[pool_id] @__export('con_test_swap1') def get_lp_points(pool_id: int, account: str): return __lp_points[pool_id, account] @__export('con_test_swap1') def get_config(): return __config |
| Contract | con_test_swap1 |
| Variable | __compiled__ |
| New Value | 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|
| Contract | con_test_swap1 |
| Variable | __developer__ |
| New Value | c674a8a398fb81765277f77fc11464496dae94632de18eea1d69bf0c7894ad03 |
| Contract | con_test_swap1 |
| Variable | __owner__ |
| New Value | null |
| Contract | con_test_swap1 |
| Variable | __submitted__ |
| New Value | 2023,8,20,8,31,59,0 |
| Contract | con_test_swap1 |
| Variable | config |
| Key | owner |
| New Value | c674a8a398fb81765277f77fc11464496dae94632de18eea1d69bf0c7894ad03 |
| Contract | currency |
| Variable | balances |
| Key | c674a8a398fb81765277f77fc11464496dae94632de18eea1d69bf0c7894ad03 |
| New Value | 972.7568836282840236214792899407 |