Contract con_uw_orbs

  

    

      

        

            
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S = Hash(default_value='')

          

            
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metadata = Hash(default_value=0)          

          

            
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@construct

          

            
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def seed():

          

            
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    metadata['operator'] = ctx.caller

          

            
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    metadata['master_contract'] = 'con_uw_master__s__1'

          

            
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@export

          

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

          

            
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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 add_thing(thing_string: str, name: str,  meta: dict, creator: str):

          

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

          

            
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    uid = hashlib.sha256(thing_string)

          

            
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    assert not S[uid],  thing_string + ' already exists'

          

            
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    S[uid] = ['thing', 'type', 'name',  'owner', 'creator',  'price:amount', 'meta_items']

          

            
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    S[uid, 'thing'] = thing_string

          

            
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    S[uid, 'type'] = 'text/plain'

          

            
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    S[uid, 'name'] = name     

          

            
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    S[uid, 'owner'] = creator

          

            
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    S[uid, 'creator'] = creator

          

            
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    S[uid, 'price', 'amount'] = 0

          

            
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    S[uid, 'auction'] = False

          

            
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    S[uid, 'meta_items'] = ['type', 'id']

          

            
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    S[uid, 'meta', 'type'] = meta['type']

          

            
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    S[uid, 'meta', 'id'] = meta['id']

          

            
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    return uid

          

            
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@export

          

            
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def thing_exists(thing_string: str):

          

            
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    uid = hashlib.sha256(thing_string)

          

            
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    return S[uid]

          

            
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@export

          

            
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def change_auction(uid: str, auction: bool):

          

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

          

            
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    S[uid, 'auction'] = auction

          

            
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    return S[uid]         

          

            
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@export

          

            
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def add_meta(uid: str, meta: str, value: Any):

          

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

          

            
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    S[uid, 'meta', meta] = value

          

            
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    return S[uid]

          

            
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@export

          

            
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def get_owner(uid: str):

          

            
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    return S[uid, 'owner']

          

            
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@export

          

            
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def get_type(uid: str):

          

            
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    return S[uid, 'meta', 'type']            

          

            
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@export

          

            
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def get_creator(uid: str):

          

            
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    return S[uid, 'creator']     

          

            
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@export

          

            
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def set_price(uid: str, amount: float):

          

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

          

            
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    assert amount >= 0, 'Cannot set a negative price' 

          

            
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    S[uid, 'price', 'amount'] = amount

          

            
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@export

          

            
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def get_price_amount(uid: str):

          

            
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    return S[uid, 'price', 'amount']

          

            
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@export

          

            
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def get_auction(uid: str):

          

            
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    return S[uid, 'auction']

          

            
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@export

          

            
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def set_owner(uid: str, owner: str):

          

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

          

            
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   S[uid, 'owner'] = owner
          
      
    
  
  

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