Contract con_node_test5_distribute

  

    

      

        

            
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import con_node_test4 as node
          

            
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import currency as tau
          

            
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investors = Hash(default_value=0)
          

            
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end_date = Variable()
          

            
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total_tau_amount = Variable()
          

            
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total_node_amount = Variable()
          

            
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min_tau_amount = Variable()
          

            
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operator = Variable()
          

            
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@construct
          

            
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def init():
          

            
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    operator.set(ctx.caller)
          

            
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@export
          

            
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def setup(time_in_hours: int, min_tau: int, node_amount: float):
          

            
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    assert_caller_is_operator()
          

            
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    end_date.set(now + datetime.timedelta(hours=time_in_hours))
          

            
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    total_node_amount.set(node_amount)
          

            
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    min_tau_amount.set(min_tau)
          

            
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    node.transfer_from(amount=node_amount, to=ctx.this, main_account=ctx.caller)
          

            
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@export
          

            
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def invest(amount_tau: int):
          

            
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    assert amount_tau >= min_tau_amount.get(), f'You need to invest at least {min_tau_amount.get()} TAU'
          

            
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    assert now < end_date.get(), 'Investment timeframe ended'
          

            
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    total_tau_amount.set(total_tau_amount.get() + amount_tau)
          

            
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    investors[ctx.caller] += amount_tau
          

            
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    return investors[ctx.caller]
          

            
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@export
          

            
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def time_until_end():
          

            
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    return end_date.get() - now
          

            
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@export
          

            
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def withdraw_node_token():
          

            
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    assert end_date.get() < now, f'Investment time not over yet! End date is {end_date.get()}'
          

            
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    assert investors[ctx.caller] > 0, 'You do not own any NODE tokens'
          

            
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    tau_percent_owned = investors[ctx.caller] / total_tau_amount.get() * 100
          

            
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    node_owned = total_node_amount.get() / 100 * tau_percent_owned
          

            
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    node.transfer(amount=node_owned, to=ctx.caller)
          

            
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@export
          

            
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def withdraw_tau():
          

            
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    assert_caller_is_operator()
          

            
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    tau.transfer(amount=tau.balance_of(ctx.this), to=ctx.caller)
          

            
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def assert_caller_is_operator():
          

            
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    assert ctx.caller == operator.get()
          

            
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