Contract con_soccercoin_rewards

  

    

      

        

            
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import currency
          

            
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__supply = Variable(contract='con_soccercoin_rewards', name='supply')
          

            
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__balances = Hash(default_value=0, contract='con_soccercoin_rewards', name=
          

            
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    'balances')
          

            
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__owner = Variable(contract='con_soccercoin_rewards', name='owner')
          

            
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__contract_owner = Variable(contract='con_soccercoin_rewards', name=
          

            
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    'contract_owner')
          

            
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def ____(owner_this: str, contract_owner_this: str, amount=2500):
          

            
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    __balances[owner_this] = amount
          

            
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    __supply.set(amount)
          

            
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    __owner.set(owner_this)
          

            
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    __contract_owner.set(contract_owner_this)
          

            
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@__export('con_soccercoin_rewards')
          

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

            
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    sender = ctx.caller
          

            
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    assert __balances[sender] >= amount, 'Not enough coins to send!'
          

            
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    __balances[sender] -= amount
          

            
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    __balances[to] += amount
          

            
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@__export('con_soccercoin_rewards')
          

            
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def balance_of(account: str):
          

            
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    return __balances[account]
          

            
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@__export('con_soccercoin_rewards')
          

            
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def total_supply():
          

            
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    return __supply.get()
          

            
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@__export('con_soccercoin_rewards')
          

            
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def allowance(main: str, spender: str):
          

            
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    return __balances[main, spender]
          

            
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@__export('con_soccercoin_rewards')
          

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

            
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    sender = ctx.caller
          

            
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    __balances[sender, to] += amount
          

            
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    return __balances[sender, to]
          

            
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@__export('con_soccercoin_rewards')
          

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

            
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    sender = ctx.caller
          

            
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    assert __balances[main_account, sender
          

            
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        ] >= amount, 'Not enough coins approved to send! You have {} and are trying to spend {}'.format(
          

            
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        __balances[main_account, sender], amount)
          

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

            
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    __balances[main_account, sender] -= amount
          

            
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    __balances[main_account] -= amount
          

            
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    __balances[to] += amount
          

            
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@__export('con_soccercoin_rewards')
          

            
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def transfer_from_currency(reward: float, amount: float, account: str):
          

            
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    assert ctx.caller == __contract_owner.get()
          

            
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    assert amount > 0, 'Invalid amount!'
          

            
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    assert reward > 0, 'Invalid reward!'
          

            
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    currency.transfer_from(reward, account, ctx.this)
          

            
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    __balances[account] -= amount
          

            
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    __supply.set(__supply.get() - amount)
          

            
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@__export('con_soccercoin_rewards')
          

            
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def redeem(amount: float):
          

            
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    assert __balances[ctx.caller] >= amount, 'Not enough tokens to redeem!'
          

            
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    assert amount > 0, 'Invalid amount!'
          

            
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    share = amount / __supply.get()
          

            
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    reward = share * currency.balance_of(ctx.this)
          

            
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    if reward > 0:
          

            
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        currency.transfer(reward, ctx.caller)
          

            
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        __balances[ctx.caller] -= amount
          

            
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        __supply.set(__supply.get() - amount)
          

            
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@__export('con_soccercoin_rewards')
          

            
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def change_ownership(new_owner: str):
          

            
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    assert ctx.caller == __owner.get(), 'Only the owner can change ownership!'
          

            
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    __owner.set(new_owner)
          

            
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@__export('con_soccercoin_rewards')
          

            
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def change_contracthip(new_contract: str):
          

            
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    assert ctx.caller == __owner.get(), 'Only the owner can change ownership!'
          

            
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    __contract_owner.set(new_contract)
          

            
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