Contract con_launchpad_3

  

    

      

        

            
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# Launchpad v1.0 without MOBGOV features
          

            
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# Token Creator creates a token and puts amount of token up for sale.
          

            
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# He will need to set a token contract, start, end time, hardcap, tokens for sale and maximum buy.
          

            
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# People can invest TAU
          

            
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# If end time reached and softcap reached - Make tokens available to claim
          

            
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# If hardcap reached - Make tokens available to claim
          

            
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# If endtime reached and softcap not reached - Refund TAU, Refund Tokens to Creator
          

            
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#
          

            
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#
          

            
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I = importlib
          

            
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random.seed() # To generate somewhat unique token sale id
          

            
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token_sales = Hash(default_value=0)
          

            
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investments = Hash(default_value=0)
          

            
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sales = Variable()  # IDs of all sales for listing on website
          

            
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end_fee = Variable()  # Only if sale is successful then fee of raised money
          

            
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operator = Variable()  # DEV can help while the sale is running if its a scam or something
          

            
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@construct
          

            
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def seed():
          

            
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    end_fee.set(5)
          

            
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    operator.set(
          

            
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        "ff61544ea94eaaeb5df08ed863c4a938e9129aba6ceee5f31b6681bdede11b89")
          

            
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    sales.set("")
          

            
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@export
          

            
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def create_sale(start_date_day: int, start_date_month: int, start_date_year: int, start_date_hour: int, start_date_minute: int, softcap: float, hardcap: float, max_buy: float, tokens_for_sale: float, token_contract: str, end_date_day: int, end_date_month: int, end_date_year: int, end_date_hour: int, end_date_minute: int):
          

            
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    token_sale_id = str(random.randint(0, 100000000))
          

            
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    assert token_sale_id not in sales.get().split(','), "Try again"
          

            
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    assert tokens_for_sale > 0, "The token amount needs to be over 0"
          

            
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    assert datetime.datetime(start_date_year, start_date_month, start_date_day, start_date_hour, start_date_minute) > now, "The start needs to be in the future"
          

            
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    assert datetime.datetime(end_date_year, end_date_month, end_date_day, end_date_hour, end_date_minute) > now, "The end needs to be in the future"
          

            
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    assert datetime.datetime(end_date_year, end_date_month, end_date_day, end_date_hour, end_date_minute) > datetime.datetime(start_date_year, start_date_month, start_date_day, start_date_hour, start_date_minute), "The end cannot be before the start"
          

            
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    I.import_module(token_contract).transfer_from(
          

            
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        main_account=ctx.caller,
          

            
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        amount=tokens_for_sale,
          

            
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        to=ctx.this)
          

            
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    token_sales[token_sale_id] = {"start_date": datetime.datetime(start_date_year, start_date_month, start_date_day, start_date_hour, start_date_minute), "end_date": datetime.datetime(
          

            
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        end_date_year, end_date_month, end_date_day, end_date_hour, end_date_minute), "softcap": softcap, "hardcap": hardcap, "max_buy": max_buy, "raised": 0, "tokens_for_sale": tokens_for_sale, "token_contract": token_contract, "seller": ctx.caller, "finalized": False, "success": False}
          

            
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    sales.set(sales.get() + "," + token_sale_id)
          

            
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@export
          

            
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def finalize(token_sale_id: str):
          

            
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    assert token_sales[token_sale_id]["finalized"] == False, "This sale is already finalized"
          

            
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    assert token_sales[token_sale_id]["end_date"] <= now, "The sale can only be finalized when the end date is reached"
          

            
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    assert token_sales[token_sale_id]["seller"] == ctx.caller or ctx.caller == operator.get(), "The sale can only be finalized by the seller"
          

            
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    if(token_sales[token_sale_id]["raised"] >= token_sales[token_sale_id]["softcap"]):
          

            
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        token_sales[token_sale_id]["success"] = True
          

            
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        I.import_module("currency").transfer(
          

            
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            amount=token_sales[token_sale_id]["raised"] - (token_sales[token_sale_id]["raised"] / 100 * end_fee.get()),
          

            
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            to=ctx.caller)
          

            
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    else:
          

            
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        token_sales[token_sale_id]["success"] = False
          

            
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    token_sales[token_sale_id]["finalized"] = True
          

            
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@export
          

            
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def buy(token_sale_id: str, amount_to_invest: float):
          

            
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    assert token_sales[token_sale_id]["finalized"] == False, "This sale is already finalized"
          

            
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    assert token_sales[token_sale_id]["end_date"] > now, "The end date is already reached"
          

            
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    assert token_sales[token_sale_id]["raised"] + amount_to_invest <= token_sales[token_sale_id]["hardcap"], "This buy would exceed the sale hardcap"
          

            
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    assert investments[token_sale_id, ctx.caller] + amount_to_invest <= token_sales[token_sale_id]["max_buy"], "You are not allowed to buy that much"
          

            
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    assert amount_to_invest > 0, "The buy amount needs to be over 0"
          

            
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    I.import_module("currency").transfer_from(
          

            
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            main_account=ctx.caller,
          

            
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            amount=amount_to_invest,
          

            
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            to=ctx.this)
          

            
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    token_sales[token_sale_id]["raised"] += amount_to_invest
          

            
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    investments[token_sale_id, ctx.caller] += amount_to_invest
          

            
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@export
          

            
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def claim(token_sale_id: str):
          

            
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    assert token_sales[token_sale_id]["finalized"] == True, "This sale needs to be finalized first"
          

            
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    if(token_sales[token_sale_id]["success"] == True):
          

            
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        I.import_module(token_sales[token_sale_id]["token_contract"]).transfer(
          

            
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                amount=token_sales[token_sale_id]["hardcap"] / token_sales[token_sale_id]["tokens_for_sale"] * investments[token_sale_id, ctx.caller],
          

            
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                to=ctx.caller)
          

            
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        investments[token_sale_id, ctx.caller] = 0
          

            
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    elif(token_sales[token_sale_id]["success"] == False):
          

            
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        I.import_module("currency").transfer(
          

            
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            amount=investments[token_sale_id, ctx.caller],
          

            
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            to=ctx.caller)
          

            
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        investments[token_sale_id, ctx.caller] = 0
          

            
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