Contract con_uw_setnick_name

  

    

      

        

            
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import currency 

          

            
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import con_uwarriors_lst001        

          

            
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metadata = Hash(default_value=0)

          

            
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nicks = Hash(default_value=0)

          

            
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wp = ForeignHash(foreign_contract='con_uwarriors_lst001', foreign_name='balances')

          

            
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@construct

          

            
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def seed():

          

            
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    metadata['operator'] = ctx.caller

          

            
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    metadata['cost'] = 100

          

            
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    metadata['recost'] = 50

          

            
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@export

          

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

          

            
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    assert ctx.caller == metadata['operator'], 'Only operator can set metadata!'

          

            
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    metadata[key] = value

          

            
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@export

          

            
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def set_nick_name(nickname: str):

          

            
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    caller = ctx.caller

          

            
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    amount = metadata['cost']

          

            
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    if nicks[caller, 'pay'] == True:

          

            
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       amount =  metadata['recost'] 

          

            
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    assert wp[caller] >= amount , 'Not enough coins to send!'

          

            
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    assert len(nickname) <= 25, 'Nickname too long (25 chars max).'

          

            
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    assert len(nickname) > 0, 'Nickname too short.'

          

            
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    names_uid = hashlib.sha256(nickname.lower().replace(' ', ''))

          

            
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    if nicks[caller, 'hash']: 

          

            
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       nicks['nicknames', nicks[caller, 'hash']] = False

          

            
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    assert not nicks['nicknames', names_uid], 'A form of this name already belongs to ' + nicks['nicknames', names_uid]

          

            
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    con_uwarriors_lst001.transfer_from(amount,  metadata['operator'], caller)

          

            
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    nicks[caller, 'nickname'] = nickname

          

            
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    nicks[caller, 'hash'] = names_uid

          

            
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    nicks['nicknames', names_uid] = nickname

          

            
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    nicks[caller, 'pay'] = True

          

            
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@export

          

            
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def change_nick_name(nickname: str, change: str):

          

            
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    assert ctx.caller == metadata['operator'], 'Only operator can set metadata!'

          

            
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    assert len(nickname) <= 25, 'Nickname too long (25 chars max).'

          

            
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    assert len(nickname) > 0, 'Nickname too short.'

          

            
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    names_uid = hashlib.sha256(nickname.lower().replace(' ', ''))

          

            
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    assert not nicks['nicknames', names_uid], 'A form of this name already belongs to ' + nicks['nicknames', names_uid]

          

            
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    nicks[nickname, 'nickname'] = change

          

            
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    nicks['nicknames', names_uid] = change  

          

            
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