Contract con_nft_marketplace_v1

  

    

      

        

            
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# THIS IS COMPATIBLE WITH EVERY LST003 COLLECTION, YOU CAN SELL DIFFERENT COLLECTIONS NOT JUST NAMESPACE
          

            
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I = importlib
          

            
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allowed_currency = Variable()
          

            
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operator = Variable()
          

            
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market = Hash(default_value=0) # Stores NFTs up for sale
          

            
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treasury = Variable()
          

            
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forced_collection_interface = [I.Func('transfer', args=('name', 'amount', 'to')), I.Func(
          

            
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    'approve', args=('amount', 'name', 'to')), I.Func('transfer_from', args=(
          

            
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    'name', 'amount', 'to', 'main_account'))]
          

            
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@construct
          

            
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def seed():
          

            
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    allowed_currency.set("con_reflecttau_v2") 
          

            
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    operator.set("ff61544ea94eaaeb5df08ed863c4a938e9129aba6ceee5f31b6681bdede11b89")
          

            
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    treasury.set("con_reflecttau_v2_treasury")
          

            
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@export
          

            
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def sell_nft(name_of_nft: str, collection_contract: str, amount: int, currency_price: float):
          

            
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    assert amount > 0, 'Cannot sell negative NFT amount'
          

            
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    assert currency_price > 0, 'Cannot sell for negative balances!'
          

            
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    collection = I.import_module(collection_contract)
          

            
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    assert I.enforce_interface(collection, forced_collection_interface
          

            
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        ), 'Invalid collection interface!'
          

            
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    collection.transfer_from(name=name_of_nft, amount=amount, to=ctx.this, main_account=ctx.caller)
          

            
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    market[ctx.caller, collection_contract, name_of_nft] = {"amount": amount, "price": currency_price}
          

            
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@export
          

            
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def refund_nft(name_of_nft: str, collection_contract: str):
          

            
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    market_entry = market[ctx.caller, collection_contract, name_of_nft]
          

            
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    collection = I.import_module(collection_contract)
          

            
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    collection.transfer(name=name_of_nft, amount=market_entry["amount"], to=ctx.caller)
          

            
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    market[ctx.caller, collection_contract, name_of_nft] = {"amount":0, "price":market_entry["price"]}
          

            
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@export
          

            
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def buy_nft(name: str, collection_contract: str, seller: str, amount:int):
          

            
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    assert amount > 0, 'Cannot buy negative NFT amount'
          

            
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    assert market[seller, collection_contract, name]["amount"] >= amount, 'Not enough for sale'
          

            
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    collection = I.import_module(collection_contract)
          

            
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    currency = I.import_module(allowed_currency.get())
          

            
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    assert I.enforce_interface(collection, forced_collection_interface
          

            
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        ), 'Invalid collection interface!'
          

            
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    fee = ((market[seller, collection_contract, name]["price"] * amount)/100*1)
          

            
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    currency.transfer_from(amount=(market[seller, collection_contract, name]["price"] * amount) - fee, to=seller, main_account=ctx.caller)
          

            
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    currency.transfer_from(amount=fee, to=treasury.get(), main_account=ctx.caller)
          

            
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    old_market_entry = market[seller, collection_contract, name]
          

            
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    market[seller, collection_contract, name] = {"amount": old_market_entry["amount"] - amount, "price": old_market_entry["price"]}
          

            
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    collection.transfer(name=name, amount=amount, to=ctx.caller)
          

            
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@export
          

            
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def change_allowed_currency(contract: str):
          

            
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    assert ctx.caller == operator.get(), "Only the operator can do this"
          

            
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    allowed_currency.set(contract)
          

            
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@export
          

            
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def change_treasury(address: str):
          

            
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    assert ctx.caller == operator.get(), "Only the operator can do this"
          

            
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    treasury.set(address)
          

            
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@export
          

            
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def change_operator(address: str):
          

            
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    assert ctx.caller == operator.get(), "Only the operator can do this"
          

            
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    operator.set(address)
          
      
    
  
  

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