Contract con_nebula_test

  

    

      

        

            
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balances = Hash(default_value=0)
          

            
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metadata = Hash()
          

            
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tax_percent = Variable()
          

            
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swap_allowed = Variable()
          

            
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vault_contract = Variable()
          

            
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tax_blacklist = Variable()
          

            
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total_supply = Variable()
          

            
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swap_end_date = Variable()
          

            
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SWAP_FACTOR = 0.01
          

            
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BURN_ADDRESS = 'NEBULA_BURN_ADDRESS'
          

            
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INTERNAL_VAULT = 'INTERNAL_NEB_VAULT'
          

            
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GOLD_CONTRACT = 'con_gold_contract'
          

            
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OPERATORS = [
          

            
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    'ae7d14d6d9b8443f881ba6244727b69b681010e782d4fe482dbfb0b6aca02d5d',
          

            
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    'e787ed5907742fa8d50b3ca2701ab8e03ec749ced806a15cdab800a127d7f863'
          

            
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]
          

            
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@construct
          

            
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def seed():
          

            
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    balances[ctx.caller] = 10_000_000
          

            
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    metadata['token_name'] = "Nebula TEST"
          

            
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    metadata['token_symbol'] = "NEBT"
          

            
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    metadata['operator'] = ctx.caller
          

            
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    tax_percent.set(2)
          

            
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    swap_allowed.set(False)
          

            
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    tax_blacklist.set(['con_rocketswap_official_v1_1'])
          

            
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    swap_end_date.set(now + datetime.timedelta(days=120))
          

            
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    vault_contract.set('')
          

            
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    total_supply.set(0)
          

            
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@export
          

            
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def change_metadata(key: str, value: Any):
          

            
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    assert_owner()
          

            
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    metadata[key] = value
          

            
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@export
          

            
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def transfer(amount: float, to: str):
          

            
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    assert amount > 0, 'Cannot send negative balances!'
          

            
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    assert balances[ctx.caller] >= amount, 'Not enough coins to send!'
          

            
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    balances[ctx.caller] -= amount
          

            
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    balances[to] += amount
          

            
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    if to in tax_blacklist.get():
          

            
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        pay_tax(amount)
          

            
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@export
          

            
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def approve(amount: float, to: str):
          

            
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    assert amount > 0, 'Cannot send negative balances!'
          

            
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    balances[ctx.caller, to] += amount
          

            
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@export
          

            
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def transfer_from(amount: float, to: str, main_account: str):
          

            
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    assert amount > 0, 'Cannot send negative balances!'
          

            
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    assert balances[main_account, ctx.caller] >= amount, 'Not enough coins approved to send! You have {} and are trying to spend {}'\
          

            
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        .format(balances[main_account, ctx.caller], amount)
          

            
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    assert balances[main_account] >= amount, 'Not enough coins to send!'
          

            
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    balances[main_account, ctx.caller] -= amount
          

            
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    balances[main_account] -= amount
          

            
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    balances[to] += amount
          

            
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    if to in tax_blacklist.get():
          

            
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        pay_tax(amount)
          

            
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# ------ TAX ------
          

            
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def pay_tax(amount: float):
          

            
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    tax_amount = int(amount / 100 * tax_percent.get())
          

            
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    if tax_amount > 0:
          

            
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        difference = int(balances[ctx.signer] - tax_amount)
          

            
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        assert balances[ctx.signer] >= tax_amount, 'Not enough coins to pay for NEB tax. Missing {} NEB'.format((difference * -1) + 1)
          

            
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        if not vault_contract.get():
          

            
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            vault = INTERNAL_VAULT
          

            
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        else:
          

            
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            vault = vault_contract.get()
          

            
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        balances[vault] += tax_amount
          

            
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        balances[ctx.signer] -= tax_amount
          

            
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@export
          

            
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def set_tax(tax_in_percent: float):
          

            
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    assert_owner()
          

            
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    assert (tax_in_percent >= 0 and tax_in_percent <= 100), 'Value must be between 0 and 100'
          

            
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    tax_percent.set(tax_in_percent)
          

            
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@export
          

            
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def add_to_tax_blacklist(recipient: str):
          

            
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    assert_owner()
          

            
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    assert recipient not in tax_blacklist.get(), 'Recipient already on tax blacklist'
          

            
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    lst = tax_blacklist.get()
          

            
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    lst.append(recipient)
          

            
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    tax_blacklist.set(lst)
          

            
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@export
          

            
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def remove_from_tax_blacklist(recipient: str):
          

            
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    assert_owner()
          

            
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    assert recipient in tax_blacklist.get(), 'Recipient not on tax blacklist'
          

            
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    lst = tax_blacklist.get()
          

            
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    lst.remove(recipient)
          

            
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    tax_blacklist.set(lst)
          

            
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# ------ SWAP ------
          

            
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@export
          

            
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def swap_gold(amount: float):
          

            
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    assert now < swap_end_date.get(), 'Swap period ended'
          

            
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    assert swap_allowed.get() == True, 'Swapping GOLD for NEB currently disabled'
          

            
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    assert amount > 0, 'Cannot swap negative balances!'
          

            
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    gold = importlib.import_module(GOLD_CONTRACT)
          

            
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    gold.transfer_from(amount=amount, to=BURN_ADDRESS, main_account=ctx.caller)
          

            
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    swap_amount = amount * SWAP_FACTOR
          

            
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    balances[ctx.caller] += swap_amount
          

            
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    total_supply.set(total_supply.get() + swap_amount)
          

            
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@export
          

            
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def enable_swap():
          

            
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    assert_owner()
          

            
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    swap_allowed.set(True)
          

            
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@export
          

            
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def disable_swap():
          

            
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    assert_owner()
          

            
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    swap_allowed.set(False)
          

            
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@export
          

            
107
            
def time_until_swap_end():
          

            
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    return swap_end_date.get() - now
          

            
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# ------ BURNING ------
          

            
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@export
          

            
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def burn(amount: float):
          

            
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    assert amount > 0, 'Cannot burn negative amount!'
          

            
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    assert balances[ctx.caller] >= amount, 'Not enough coins to burn!'
          

            
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    balances[BURN_ADDRESS] += amount
          

            
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    balances[ctx.caller] -= amount
          

            
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# ------ VAULT ------
          

            
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@export
          

            
118
            
def set_vault(contract: str):
          

            
119
            
    assert_owner()
          

            
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    vault_contract.set(contract)
          

            
121
            
@export
          

            
122
            
def flush_internal_vault():
          

            
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    assert_owner()
          

            
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    assert vault_contract.get(), 'Vault contract not set!'
          

            
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    balances[vault_contract.get()] += balances[INTERNAL_VAULT]
          

            
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    balances[INTERNAL_VAULT] = 0
          

            
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# ------ SUPPLY ------
          

            
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@export
          

            
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def circulating_supply():
          

            
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    return int(total_supply.get() - balances[BURN_ADDRESS])
          

            
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@export
          

            
132
            
def total_supply():
          

            
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    return int(total_supply.get())
          

            
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# ------ INTERNAL ------
          

            
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def assert_owner():
          

            
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    assert ctx.caller in OPERATORS, 'Only executable by operators!'
          
      
    
  
  

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