Contract con_taurus_nft_farms
| Creator | ff61544ea94eaaeb5df08ed863c4a938e9129aba6ceee5f31b6681bdede11b89 |
| Creation Hash | 77a80bfdd2944271f3ff0c2d76b330abcd0489f5005d8133789d986658c32d92 |
| Created On | 503 days ago - 12/17/2022, 8:48:30 PM UTC+0 |
Contract Code
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I = importlib
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token_interface = [I.Func('transfer', args=('amount', 'to')), I.Func(
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'approve', args=('amount', 'to')), I.Func('transfer_from', args=(
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'amount', 'to', 'main_account'))]
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nft_interface = [I.Func('transfer', args=('name', 'amount', 'to')), I.Func(
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'approve', args=('amount', 'name', 'to')), I.Func('transfer_from', args=(
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'name', 'amount', 'to', 'main_account'))]
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farms = Hash(default_value = False)
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operator = Variable()
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existing_farms = Variable()
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fee = Variable()
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@construct
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def seed():
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operator.set(ctx.caller)
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existing_farms.set(0)
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fee.set(2)
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@export
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def change_op(new_op: str):
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assert operator.get() == ctx.caller, "You are not the current op"
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operator.set(new_op)
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@export
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def change_fee(new_fee: float):
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assert operator.get() == ctx.caller, "You are not the current op"
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fee.set(new_fee)
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@export
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def create_farm(nft_collection_contract:str, reward_token_contract: str, total_payout: float, end_year: int, end_month: int, end_day: int, end_hour: int, end_minute: int):
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assert total_payout > 0, "Total Payout needs to be more then 0"
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assert datetime.datetime(year=end_year,month=end_month,day=end_day) > now, "End Time needs to be in the future"
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collection = I.import_module(nft_collection_contract)
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assert I.enforce_interface(collection, nft_interface
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), 'Invalid nft collection interface!'
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token = I.import_module(reward_token_contract)
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assert I.enforce_interface(token, token_interface
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), 'Invalid token interface!'
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total_payout_deposit = total_payout / 100 * (100 - fee.get())
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op_fee = total_payout - total_payout_deposit
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token.transfer_from(amount=total_payout_deposit, to=ctx.this, main_account=ctx.
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caller)
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token.transfer_from(amount=op_fee, to=operator.get(), main_account=ctx.
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caller)
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new_farm_id = existing_farms.get() + 1
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farms[new_farm_id, 'info'] = {"nft_collection_contract": nft_collection_contract, "reward_token_contract": reward_token_contract, "end_time": datetime.datetime(year=end_year,month=end_month,day=end_day, hour=end_hour, minute=end_minute), "start_time":now, "reward_token_balance": total_payout_deposit, "current_epoch": 0}
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farms[new_farm_id, 'epochs', 0] = {"staked": 0, "amount_per_second": total_payout_deposit / timedelta_to_seconds(from_datetime=now,to_datetime=datetime.datetime(year=end_year,month=end_month,day=end_day, hour=end_hour, minute=end_minute)), "epoch_end": None, "epoch_start": now}
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existing_farms.set(new_farm_id)
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return 0
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@export
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def deposit_to_farm(farm_id:int, nft_name:str):
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assert farms[farm_id, 'info'] != False, "This farm does not exist"
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assert farms[farm_id, 'info']['end_time'] > now, "This farm is closed"
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collection = I.import_module(farms[farm_id, 'info']['nft_collection_contract'])
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collection.transfer_from(name=nft_name, amount=1, to=ctx.this, main_account=ctx.caller)
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end_epoch(farm_id)
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new_epoch_id=create_new_epoch(farm_id, "deposit")
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farms[farm_id, 'deposits', ctx.caller, nft_name] = {"start_epoch":new_epoch_id, "start_time":now}
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return True
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@export
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def withdraw_rewards_and_nft(farm_id:int, nft_name:str):
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assert farms[farm_id, 'deposits', ctx.caller, nft_name] != False, "You don't have that NFT deposited in the farm"
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assert farms[farm_id, 'info']['end_time'] > now, "This farm is closed"
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epoch_of_deposit = farms[farm_id, 'deposits', ctx.caller, nft_name]["start_epoch"]
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time_of_deposit = farms[farm_id, 'deposits', ctx.caller, nft_name]["start_time"]
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current_epoch = farms[farm_id, 'info']['current_epoch']
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farm_info = farms[farm_id, 'info']
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epochs_staked = current_epoch - epoch_of_deposit
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end_epoch(farm_id)
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rewards = 0
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for epoch in range(epoch_of_deposit, current_epoch + 1):
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this_epoch = farms[farm_id, 'epochs', epoch]
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this_epoch_reward = this_epoch['amount_per_second']
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if(time_of_deposit > this_epoch['epoch_end']):
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seconds_staked_in_epoch = timedelta_to_seconds(from_datetime=time_of_deposit,to_datetime=this_epoch['epoch_end'])
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else:
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seconds_staked_in_epoch = timedelta_to_seconds(from_datetime=this_epoch['epoch_start'],to_datetime=this_epoch['epoch_end'])
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rewards += this_epoch_reward * seconds_staked_in_epoch
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collection = I.import_module(farms[farm_id, 'info']['nft_collection_contract'])
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collection.transfer(name=nft_name, amount=1, to=ctx.caller)
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token = I.import_module(farms[farm_id, 'info']['reward_token_contract'])
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calc_rewards = 0
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if(farms[farm_id, 'withdrawals', ctx.caller, nft_name] == False):
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calc_rewards = rewards
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token.transfer(amount=calc_rewards, to=ctx.caller)
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farms[farm_id, 'withdrawals', ctx.caller, nft_name] = calc_rewards
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else:
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calc_rewards = rewards - farms[farm_id, 'withdrawals', ctx.caller, nft_name]
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token.transfer(amount=calc_rewards, to=ctx.caller)
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farms[farm_id, 'withdrawals', ctx.caller, nft_name] += calc_rewards
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farms[farm_id, 'info'] = farm_info
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new_epoch_id = create_new_epoch(farm_id, "withdraw")
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return new_epoch_id
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def timedelta_to_seconds(from_datetime: datetime.datetime, to_datetime: datetime.datetime):
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delta = to_datetime - from_datetime
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total = 0
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total += delta.weeks * 604800
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total += delta.days * 86400
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total += delta.hours * 3600
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total += delta.minutes * 60
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total += delta.seconds
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return total
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def end_epoch(farm_id: int):
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current_epoch_number = farms[farm_id, 'info']['current_epoch']
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current_epoch_data = farms[farm_id, 'epochs', current_epoch_number]
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current_epoch_data["epoch_end"] = now
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farms[farm_id, 'epochs', current_epoch_number] = current_epoch_data
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current_farm_info = farms[farm_id, 'info']
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current_farm_info["current_epoch"] = current_epoch_number + 1
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farms[farm_id, 'info'] = current_farm_info
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def create_new_epoch(farm_id:int, method:str):
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current_farm_info = farms[farm_id, 'info']
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current_epoch_number = farms[farm_id, 'info']['current_epoch'] - 1
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current_epoch_data = farms[farm_id, 'epochs', current_epoch_number]
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new_epoch_number = current_epoch_number + 1
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new_epoch_data = dict(current_epoch_data)
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if(method == "deposit"):
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new_epoch_data["staked"] += 1
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if(method == "withdraw"):
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new_epoch_data["staked"] -= 1
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if(new_epoch_data["staked"] == 0):
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new_epoch_data["amount_per_second"] = (current_farm_info["reward_token_balance"] / timedelta_to_seconds(from_datetime=current_farm_info["start_time"],to_datetime=current_farm_info["end_time"]))
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else:
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new_epoch_data["amount_per_second"] = (current_farm_info["reward_token_balance"] / timedelta_to_seconds(from_datetime=current_farm_info["start_time"],to_datetime=current_farm_info["end_time"]) / new_epoch_data["staked"])
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new_epoch_data["epoch_start"] = now
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farms[farm_id, 'epochs', new_epoch_number] = new_epoch_data
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return new_epoch_number
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@export
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def emergency_withdraw_token(token_contract:str, amount:float):
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assert ctx.caller == operator.get(), "You are not the operator"
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token = I.import_module(token_contract)
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token.transfer(amount=amount, to=ctx.caller)
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@export
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def emergency_withdraw_nft(contract:str, name:str, amount:int):
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assert ctx.caller == operator.get(), "You are not the operator"
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collection = I.import_module(contract)
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collection.transfer(name=name, amount=amount, to=ctx.caller)
Byte Code
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